Marine Weather and Tide Forecast for Jamaica Beach, TX
April 23, 2025 2:38 AM CDT (07:38 UTC) Change Location
![]() | Sunrise 6:42 AM Sunset 7:51 PM Moonrise 3:03 AM Moonset 2:33 PM |
GMZ355 Expires:202504231615;;291234 Fzus54 Khgx 230312 Cwfhgx
coastal waters forecast for texas national weather service houston/galveston tx 1012 pm cdt Tue apr 22 2025
upper texas coastal waters from high island to the matagorda ship channel out 60 nautical miles including galveston and matagorda bays.
seas are provided as a range of the average height of the highest 1/3 of the waves - .along with the occasional height of the average highest 10 percent of the waves.
gmz350-355-231615- coastal waters from freeport to matagorda ship channel tx out 20 nm-coastal waters from high island to freeport tx out 20 nm- 1012 pm cdt Tue apr 22 2025
Rest of tonight - Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave detail: southeast 3 feet at 7 seconds.
Wednesday - Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave detail: southeast 3 feet at 7 seconds. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Wednesday night - Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave detail: southeast 3 feet at 7 seconds.
Thursday - Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave detail: southeast 3 feet at 7 seconds.
Thursday night - Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave detail: southeast 4 feet at 7 seconds.
Friday - Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave detail: southeast 4 feet at 7 seconds.
Friday night - Southeast winds around 10 knots. Seas 3 to 5 feet.
Saturday - Southeast winds around 10 knots. Seas 3 to 4 feet.
Saturday night - Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
Sunday - Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
Sunday night - Southeast winds around 15 knots. Seas 3 to 4 feet.
winds and seas higher in and near Thunderstorms.
coastal waters forecast for texas national weather service houston/galveston tx 1012 pm cdt Tue apr 22 2025
upper texas coastal waters from high island to the matagorda ship channel out 60 nautical miles including galveston and matagorda bays.
seas are provided as a range of the average height of the highest 1/3 of the waves - .along with the occasional height of the average highest 10 percent of the waves.
gmz350-355-231615- coastal waters from freeport to matagorda ship channel tx out 20 nm-coastal waters from high island to freeport tx out 20 nm- 1012 pm cdt Tue apr 22 2025
winds and seas higher in and near Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1012 Pm Cdt Tue Apr 22 2025
Synopsis for high island to the matagorda ship channel out 60 nm including galveston and matagorda bays
latest runs of high resolution model guidance shows a cluster of Thunderstorms moving into southeast texas and off the coast on Wednesday afternoon. Exact timing is still a bit uncertain at the moment, but strong winds, locally higher seas, frequent lightning, and heavy rain will be possible with these storms as they push into the bays and off the coast. Outside of that, light to occasionally moderate onshore flow will persist throughout the week. Daily chance of showers and Thunderstorms continue throughout the week. Onshore winds and seas are expected to increase by the middle of the week and prevail into the end of the work week.
latest runs of high resolution model guidance shows a cluster of Thunderstorms moving into southeast texas and off the coast on Wednesday afternoon. Exact timing is still a bit uncertain at the moment, but strong winds, locally higher seas, frequent lightning, and heavy rain will be possible with these storms as they push into the bays and off the coast. Outside of that, light to occasionally moderate onshore flow will persist throughout the week. Daily chance of showers and Thunderstorms continue throughout the week. Onshore winds and seas are expected to increase by the middle of the week and prevail into the end of the work week.
7 Day Forecast for Marine Location Near Jamaica Beach, TX

NEW! Add second zone forecast
Jamaica Beach Click for Map Wed -- 02:17 AM CDT 0.86 feet High Tide Wed -- 04:03 AM CDT Moonrise Wed -- 06:45 AM CDT Sunrise Wed -- 10:31 AM CDT 0.20 feet Low Tide Wed -- 03:33 PM CDT Moonset Wed -- 05:06 PM CDT 0.97 feet High Tide Wed -- 07:51 PM CDT Sunset Wed -- 11:32 PM CDT 0.64 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |   |
Jamaica Beach, West Bay, Texas, Tide feet
12 am |
0.8 |
1 am |
0.8 |
2 am |
0.9 |
3 am |
0.9 |
4 am |
0.8 |
5 am |
0.7 |
6 am |
0.6 |
7 am |
0.5 |
8 am |
0.4 |
9 am |
0.3 |
10 am |
0.2 |
11 am |
0.2 |
12 pm |
0.3 |
1 pm |
0.4 |
2 pm |
0.6 |
3 pm |
0.8 |
4 pm |
0.9 |
5 pm |
1 |
6 pm |
1 |
7 pm |
0.9 |
8 pm |
0.8 |
9 pm |
0.7 |
10 pm |
0.7 |
11 pm |
0.6 |
Bolivar Roads Click for Map Wed -- 12:46 AM CDT -0.63 knots Min Ebb Wed -- 04:02 AM CDT Moonrise Wed -- 06:37 AM CDT -1.55 knots Max Ebb Wed -- 06:44 AM CDT Sunrise Wed -- 11:02 AM CDT 0.00 knots Slack Wed -- 02:34 PM CDT 1.66 knots Max Flood Wed -- 03:32 PM CDT Moonset Wed -- 07:23 PM CDT -0.00 knots Slack Wed -- 07:50 PM CDT Sunset Wed -- 10:24 PM CDT -0.67 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |   |
Bolivar Roads, Texas Current, knots
12 am |
-0.7 |
1 am |
-0.6 |
2 am |
-0.7 |
3 am |
-0.9 |
4 am |
-1.1 |
5 am |
-1.4 |
6 am |
-1.5 |
7 am |
-1.5 |
8 am |
-1.4 |
9 am |
-1.1 |
10 am |
-0.6 |
11 am |
-0 |
12 pm |
0.7 |
1 pm |
1.3 |
2 pm |
1.6 |
3 pm |
1.6 |
4 pm |
1.4 |
5 pm |
1 |
6 pm |
0.6 |
7 pm |
0.1 |
8 pm |
-0.2 |
9 pm |
-0.5 |
10 pm |
-0.7 |
11 pm |
-0.6 |
Area Discussion for Houston/Galveston, TX
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FXUS64 KHGX 230534 AFDHGX
Area Forecast Discussion National Weather Service Houston/Galveston TX 1234 AM CDT Wed Apr 23 2025
New LONG TERM, AVIATION, MARINE
SHORT TERM
(This evening through Wednesday Night)
Issued at 233 PM CDT Tue Apr 22 2025
Showers have begun to move inland from the Gulf this afternoon, tapping into the moisture provided by southwesterly flow aloft and onshore flow at the surface. With CAPE around 2000 J/kg and vorticity maximums passing overhead, may see some storms fire up alongside these showers as the afternoon progresses.
While storms are not projected to be as strong as what was observed yesterday, as the previous forecaster mentioned it is the time of year when SE TX routinely has favorable dynamics for some storms to go rogue and become stronger in nature. Shear values aren't all that impressive (20-35 kt range) and with the vorticity maximums not all that
well
maximum...not expecting to see anything wildly strong or severe. Mostly expect that if any did approach the stronger end of a typical thunderstorm it would likely produce a decent amount of rain (thank you 90th percentile PWATs) and isolated stronger gusts of wind.
Also mentioned by the previous forecaster was the potential for an MCS early Wednesday morning. 12Z HRRR continues to hold onto this idea of an MCS tracking across the state and making it into SE Texas around sunrise on Wednesday. The complexity lies in that it is the only Hi-Res model that has been consistent with this possibility...all other Hi-Res models have shown the MCS fizzling out well before it reaches SE Texas. Have opted to lean more towards the HRRR since it is *usually* better at handling convective systems. In any case, not expecting anything severe to occur with this system. It could produce some gusty winds as it rolls through, and it certainly has the potential to drop around 0.25"-1.0" of rain (potentially isolated higher amounts in the stronger parts of the system).
Temperatures for tonight and tomorrow night will be pretty similar with lows in the upper 60s to low 70s.
Highs for Wednesday will be in the low 80s inland and in the upper 70s to around 80 degrees along the coast.
LONG TERM
(Friday through Tuesday)
Issued at 1234 AM CDT Wed Apr 23 2025
Chances for showers/storms continue into Friday mainly for areas north of I-10 as another embedded shortwave passes through the area.
PW values will still generally be near the 90th percentile (~1.60"), so we could see some locally heavy downpours as we have seen over the past few days. However, going into late Friday, we'll begin to see mid to upper level ridging build in that'll prevail into early next week. This will take rain chances on a decreasing trend and temperatures on an increasing trend heading into the weekend...especially with 850mb temperatures trending towards the 90th percentile going into the weekend/early next week. So, that means we'll go from high temperatures in the upper 80s on Friday and add a degree or two each day going into early next week. That'll take us with plenty of locations around or above the 90°F mark on Monday.
Rain chances do look to return around the middle part of next week as an upper level trough approaches from the western CONUS and pushes the ridge axis eastward. This next system may have another frontal boundary nearby with plenty of moisture to work with, so we'll have to monitor for another round of heavy rain potential...just keep in mind there's still a lot uncertainty. The increasing rain chances does trim down temperatures a bit. Speaking of temperatures, expect low temperatures to range from the upper 60s to low 70s through the weekend and in the low to mid 70s early next week.
Batiste
AVIATION
(06Z TAF Issuance)
Issued at 1234 AM CDT Wed Apr 23 2025
MVFR ceilings will steadily fill in from south to north over the next few hours. A few spots (SGR/LBX/CXO) may see intermittent decreased visibilities due to patchy fog, but upper level cloud cover streaming in from the west may inhibit its development.
Speaking of that, we are monitoring a line of strong thunderstorms over Central Texas currently that is anticipated to move into Southeast Texas later this morning. The timing remains uncertain as high-resolution model guidance is unsure on if we get a line of storms from the west, from the northwest, or a combination of both...so take the timing of the PROB30s in the TAFs with a grain of salt.
Based on radar trends and synoptic flow aloft, we are leaning towards the western line of storms being the main show later this morning into the afternoon hours. Winds will be locally higher around these storms, but prevailing winds will be southeasterly around 8-12kt in the morning and afternoon. Scattered showers/storms may linger behind the main line, but there's also potential for all of the energy to be taken out of the atmosphere leaving nothing behind the line of storms. So, to say that uncertain is high would be an understatement. MVFR ceilings are expected to fill in again late Wednesday night from south to north...and those decreased ceilings may linger along the coast throughout the day.
Batiste
MARINE
Issued at 1234 AM CDT Wed Apr 23 2025
Latest runs of high resolution model guidance shows a cluster of thunderstorms moving into Southeast Texas and off the coast on Wednesday late morning/afternoon. Exact timing is still a bit uncertain at the moment, but strong winds, locally higher seas, frequent lightning, and heavy rain will be possible with these storms as they push into the bays and off the coast. Outside of that, light to occasionally moderate southeasterly winds will persist throughout the week. Around and after midweek, an extended southeasterly fetch develops across the Gulf leading to an increase in winds and wave heights potentially reaching caution flag criteria. Chances for showers and thunderstorms will persist throughout most of the week as Gulf moisture interacts with various upper level disturbances, but will generally decrease each day after today.
Batiste
PRELIMINARY POINT TEMPS/POPS
College Station (CLL) 82 69 87 69 / 70 20 60 10 Houston (IAH) 82 70 86 71 / 70 10 30 10 Galveston (GLS) 81 73 82 73 / 60 10 10 10
HGX WATCHES/WARNINGS/ADVISORIES
TX...None.
GM...None.
Area Forecast Discussion National Weather Service Houston/Galveston TX 1234 AM CDT Wed Apr 23 2025
New LONG TERM, AVIATION, MARINE
SHORT TERM
(This evening through Wednesday Night)
Issued at 233 PM CDT Tue Apr 22 2025
Showers have begun to move inland from the Gulf this afternoon, tapping into the moisture provided by southwesterly flow aloft and onshore flow at the surface. With CAPE around 2000 J/kg and vorticity maximums passing overhead, may see some storms fire up alongside these showers as the afternoon progresses.
While storms are not projected to be as strong as what was observed yesterday, as the previous forecaster mentioned it is the time of year when SE TX routinely has favorable dynamics for some storms to go rogue and become stronger in nature. Shear values aren't all that impressive (20-35 kt range) and with the vorticity maximums not all that
well
maximum...not expecting to see anything wildly strong or severe. Mostly expect that if any did approach the stronger end of a typical thunderstorm it would likely produce a decent amount of rain (thank you 90th percentile PWATs) and isolated stronger gusts of wind.
Also mentioned by the previous forecaster was the potential for an MCS early Wednesday morning. 12Z HRRR continues to hold onto this idea of an MCS tracking across the state and making it into SE Texas around sunrise on Wednesday. The complexity lies in that it is the only Hi-Res model that has been consistent with this possibility...all other Hi-Res models have shown the MCS fizzling out well before it reaches SE Texas. Have opted to lean more towards the HRRR since it is *usually* better at handling convective systems. In any case, not expecting anything severe to occur with this system. It could produce some gusty winds as it rolls through, and it certainly has the potential to drop around 0.25"-1.0" of rain (potentially isolated higher amounts in the stronger parts of the system).
Temperatures for tonight and tomorrow night will be pretty similar with lows in the upper 60s to low 70s.
Highs for Wednesday will be in the low 80s inland and in the upper 70s to around 80 degrees along the coast.
LONG TERM
(Friday through Tuesday)
Issued at 1234 AM CDT Wed Apr 23 2025
Chances for showers/storms continue into Friday mainly for areas north of I-10 as another embedded shortwave passes through the area.
PW values will still generally be near the 90th percentile (~1.60"), so we could see some locally heavy downpours as we have seen over the past few days. However, going into late Friday, we'll begin to see mid to upper level ridging build in that'll prevail into early next week. This will take rain chances on a decreasing trend and temperatures on an increasing trend heading into the weekend...especially with 850mb temperatures trending towards the 90th percentile going into the weekend/early next week. So, that means we'll go from high temperatures in the upper 80s on Friday and add a degree or two each day going into early next week. That'll take us with plenty of locations around or above the 90°F mark on Monday.
Rain chances do look to return around the middle part of next week as an upper level trough approaches from the western CONUS and pushes the ridge axis eastward. This next system may have another frontal boundary nearby with plenty of moisture to work with, so we'll have to monitor for another round of heavy rain potential...just keep in mind there's still a lot uncertainty. The increasing rain chances does trim down temperatures a bit. Speaking of temperatures, expect low temperatures to range from the upper 60s to low 70s through the weekend and in the low to mid 70s early next week.
Batiste
AVIATION
(06Z TAF Issuance)
Issued at 1234 AM CDT Wed Apr 23 2025
MVFR ceilings will steadily fill in from south to north over the next few hours. A few spots (SGR/LBX/CXO) may see intermittent decreased visibilities due to patchy fog, but upper level cloud cover streaming in from the west may inhibit its development.
Speaking of that, we are monitoring a line of strong thunderstorms over Central Texas currently that is anticipated to move into Southeast Texas later this morning. The timing remains uncertain as high-resolution model guidance is unsure on if we get a line of storms from the west, from the northwest, or a combination of both...so take the timing of the PROB30s in the TAFs with a grain of salt.
Based on radar trends and synoptic flow aloft, we are leaning towards the western line of storms being the main show later this morning into the afternoon hours. Winds will be locally higher around these storms, but prevailing winds will be southeasterly around 8-12kt in the morning and afternoon. Scattered showers/storms may linger behind the main line, but there's also potential for all of the energy to be taken out of the atmosphere leaving nothing behind the line of storms. So, to say that uncertain is high would be an understatement. MVFR ceilings are expected to fill in again late Wednesday night from south to north...and those decreased ceilings may linger along the coast throughout the day.
Batiste
MARINE
Issued at 1234 AM CDT Wed Apr 23 2025
Latest runs of high resolution model guidance shows a cluster of thunderstorms moving into Southeast Texas and off the coast on Wednesday late morning/afternoon. Exact timing is still a bit uncertain at the moment, but strong winds, locally higher seas, frequent lightning, and heavy rain will be possible with these storms as they push into the bays and off the coast. Outside of that, light to occasionally moderate southeasterly winds will persist throughout the week. Around and after midweek, an extended southeasterly fetch develops across the Gulf leading to an increase in winds and wave heights potentially reaching caution flag criteria. Chances for showers and thunderstorms will persist throughout most of the week as Gulf moisture interacts with various upper level disturbances, but will generally decrease each day after today.
Batiste
PRELIMINARY POINT TEMPS/POPS
College Station (CLL) 82 69 87 69 / 70 20 60 10 Houston (IAH) 82 70 86 71 / 70 10 30 10 Galveston (GLS) 81 73 82 73 / 60 10 10 10
HGX WATCHES/WARNINGS/ADVISORIES
TX...None.
GM...None.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
GRRT2 | 9 mi | 69 min | SE 9.9G | 74°F | 77°F | 29.94 | ||
LUIT2 | 11 mi | 69 min | SE 8G | 75°F | 77°F | 29.95 | ||
GTOT2 | 13 mi | 69 min | SE 5.1G | 75°F | 78°F | 29.93 | ||
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX | 18 mi | 69 min | SSE 14G | 75°F | 76°F | 29.94 | ||
EPTT2 - 8771013 - Eagle Point, TX | 20 mi | 69 min | SE 13G | 76°F | 78°F | 29.96 | ||
FPST2 | 24 mi | 69 min | SE 12G | 75°F | 77°F | 29.93 | ||
KGVW | 24 mi | 44 min | 75°F | 73°F | ||||
42035 - GALVESTON 22NM East of Galveston, TX | 31 mi | 49 min | ESE 14G | 74°F | 2 ft | 29.98 | 73°F | |
MGPT2 - 8770613 - Morgans Point, TX | 33 mi | 69 min | ESE 16G | 74°F | 78°F | 29.95 | ||
RLOT2 - 8770971 - Rollover Pass, TX | 33 mi | 69 min | SE 12G | 75°F | 29.96 | |||
NCHT2 - 8770777 - Manchester, TX | 39 mi | 69 min | S 5.1G | 74°F | 77°F | 29.93 | ||
HIST2 | 42 mi | 69 min | SE 2.9G | 75°F | 29.96 |
Wind History for Galveston Pier 21, TX
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Airport Reports
Link to 1 hour of 5 minute data for KGLS
Terminal Aerodrome Forecast (TAF) for KGLS
Wind History Graph: GLS
(wind in knots)GEOS Local Image of southern planes -- texas
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Houston/Galveston, TX,

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