Marine Weather and Tide Forecast for Laguna Heights, TX
 | Sunrise 7:17 AM Sunset 7:28 PM Moonrise 2:52 PM Moonset 12:31 AM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
GMZ130 Laguna Madre From The Port Of Brownsville To The Arroyo Colorado- Laguna Madre From The Arroyo Colorado To 5 Nm North Of Port Mansfield Tx- Laguna Madre From 5 Nm North Of Port Mansfield To Baffin Bay Tx- 144 Pm Cdt Sun Sep 20 2026
Tonight - Southeast winds 5 to 10 knots. Light chop on the bay.
Monday - Southeast winds around 5 knots, becoming east in the afternoon. Smooth on the bay, increasing to light chop in the afternoon.
Monday night - East winds 10 to 15 knots, becoming southeast 5 to 10 knots after midnight. Light chop on the bay. A slight chance of showers after midnight.
Tuesday - East winds around 5 knots, increasing to 10 to 15 knots. Smooth on the bay, increasing to a moderate chop. A slight chance of Thunderstorms. A chance of showers until late afternoon, then a slight chance of showers late in the afternoon.
Tuesday night - East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Light chop on the bay. A slight chance of showers and Thunderstorms early in the evening. A slight chance of showers after midnight.
Wednesday - East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay. A chance of showers. A slight chance of Thunderstorms in the morning, then a chance of Thunderstorms in the afternoon.
Wednesday night - East winds 5 to 10 knots. Light chop on the bay. A chance of showers and Thunderstorms early in the evening. A slight chance of showers and Thunderstorms after midnight.
Thursday - East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay. A chance of showers. A slight chance of Thunderstorms in the morning, then a chance of Thunderstorms in the afternoon.
Thursday night - East winds 10 to 15 knots, diminishing to 5 to 10 knots in the late evening and overnight. A moderate chop on the bay, diminishing to light chop in the late evening and overnight. A chance of showers and Thunderstorms early in the evening. A chance of showers with a slight chance of Thunderstorms after midnight.
Friday - East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay. A chance of showers. A slight chance of Thunderstorms early in the morning. A slight chance of Thunderstorms in the afternoon.
Friday night - East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Light chop on the bay. A chance of showers with a slight chance of Thunderstorms early in the evening. A slight chance of showers after midnight.
winds and waves higher in and near Thunderstorms.
winds and waves higher in and near Thunderstorms.
GMZ100 144 Pm Cdt Sun Sep 20 2026
Synopsis - Favorable marine conditions are expected through the next several days, with light to moderate winds and low to moderate seas. Rain and Thunderstorm chances increase this week which could lead to locally adverse marine conditions.
7 Day Forecast for Marine Location Near Laguna Heights, TX
NEW! Add second zone forecast
| Port Isabel Click for Map Sun -- 01:31 AM CDT Moonset Sun -- 03:30 AM CDT 1.81 feet High Tide Sun -- 07:16 AM CDT Sunrise Sun -- 03:51 PM CDT Moonrise Sun -- 05:40 PM CDT 0.41 feet Low Tide Sun -- 07:27 PM CDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
Port Isabel, Laguna Madre, Texas, Tide feet
| 12 am |
| 1.6 |
| 1 am |
| 1.7 |
| 2 am |
| 1.8 |
| 3 am |
| 1.8 |
| 4 am |
| 1.8 |
| 5 am |
| 1.8 |
| 6 am |
| 1.7 |
| 7 am |
| 1.6 |
| 8 am |
| 1.6 |
| 9 am |
| 1.5 |
| 10 am |
| 1.4 |
| 11 am |
| 1.3 |
| 12 pm |
| 1.1 |
| 1 pm |
| 1 |
| 2 pm |
| 0.8 |
| 3 pm |
| 0.6 |
| 4 pm |
| 0.5 |
| 5 pm |
| 0.4 |
| 6 pm |
| 0.4 |
| 7 pm |
| 0.5 |
| 8 pm |
| 0.6 |
| 9 pm |
| 0.8 |
| 10 pm |
| 1 |
| 11 pm |
| 1.2 |
| ICW Laguna Madre Click for Map Flood direction 333 true Ebb direction 147 true Sun -- 12:08 AM CDT 0.56 knots Max Flood Sun -- 01:31 AM CDT Moonset Sun -- 03:46 AM CDT 0.21 knots Min Flood Sun -- 06:45 AM CDT 0.56 knots Max Flood Sun -- 07:16 AM CDT Sunrise Sun -- 01:56 PM CDT -0.00 knots Slack Sun -- 03:51 PM CDT Moonrise Sun -- 07:15 PM CDT -0.46 knots Max Ebb Sun -- 07:27 PM CDT Sunset Sun -- 09:49 PM CDT 0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
ICW Laguna Madre, Light 69 (depth 4 ft), Texas Current, knots
| 12 am |
| 0.6 |
| 1 am |
| 0.5 |
| 2 am |
| 0.4 |
| 3 am |
| 0.3 |
| 4 am |
| 0.2 |
| 5 am |
| 0.3 |
| 6 am |
| 0.5 |
| 7 am |
| 0.6 |
| 8 am |
| 0.5 |
| 9 am |
| 0.4 |
| 10 am |
| 0.3 |
| 11 am |
| 0.1 |
| 12 pm |
| 0.1 |
| 1 pm |
| 0.1 |
| 2 pm |
| -0 |
| 3 pm |
| -0.1 |
| 4 pm |
| -0.3 |
| 5 pm |
| -0.4 |
| 6 pm |
| -0.5 |
| 7 pm |
| -0.5 |
| 8 pm |
| -0.4 |
| 9 pm |
| -0.3 |
| 10 pm |
| 0.1 |
| 11 pm |
| 0.3 |
FXUS64 KBRO 202304 AAA AFDBRO
Area Forecast Discussion...UPDATED National Weather Service Brownsville TX 604 PM CDT Sun Sep 20 2026
New AVIATION
KEY MESSAGES
Updated at 551 PM CDT Sun Sep 20 2026
- Daily low medium chances of rain return Monday and become region-wide by next Tuesday.
- Temperatures remain warm but ease off a few degrees from widespread areas of low 100s along/west I-69 E to mostly upper 90s by Tuesday.
- Extreme risks of heat-related illnesses (level 4/4) are likely to continue for more populated portions of the RGV/Rio Grande Plains through at least Tuesday while the rest of the region experiences moderate to major risks (level 2/4 and 3/4).
- A moderate risk of life-threatening rip currents continues through tonight.
DISCUSSION
Issued at 1206 PM CDT Sun Sep 20 2026
Quiet conditions expected today before a somewhat active weather pattern takes hold early week.
Deeper moisture begins to move into South Texas and rain chances will increase early week as the high pressure overhead weakens a bit and a frontal boundary pushes into central Texas. Low rain chances are expected in the low to mid-valley on Monday but become more widespread and increase to 30-60% on Tuesday. Rain chances up to 50% linger into late week. The bulk of any shower or thunderstorm activity will primarily coincide with peak daytime heating.
Heat Risk will remain Moderate to Extreme over the next week, though increased cloud cover and/or showers and thunderstorms could bring a little relief. Extreme heat risk is primarily expected in more urban/populated areas. Temperatures will still remain above normal with mid to upper 90s to low triple digits, though by Thursday and Friday, could struggle to reach the triple digits with the excess cloudcover and rain chances. Heat indices will peak each afternoon between 105-110 degrees.
There is a moderate risk of rip currents at area beaches. The strongest and most life threatening rips currents often occur near jetties and piers. Use caution if entering the water.
AVIATION
(00Z TAFS)
Issued at 551 PM CDT Sun Sep 20 2026
VFR will prevail at the aerodromes through the next 24 hours, with light to moderate winds with breezy gusts and clear to partly cloudy skies. Convection is possible, but will be too isolated to warrant a mention in the current issuance of TAFs.
MARINE
Issued at 1206 PM CDT Sun Sep 20 2026
Generally favorable conditions will prevail with light to moderate southeasterly winds with seas around 2-3 ft and 5-6 second periods.
Daily chances of showers and thunderstorms could lead to locally enhanced winds and seas.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 80 97 80 95 / 0 20 0 40 HARLINGEN 76 99 75 98 / 0 10 0 40 MCALLEN 80 103 79 100 / 0 20 0 60 RIO GRANDE CITY 78 102 77 100 / 0 10 10 40 SOUTH PADRE ISLAND 82 89 82 89 / 0 10 10 30 BAYVIEW/PORT ISABEL 79 95 79 94 / 0 10 10 30
BRO WATCHES/WARNINGS/ADVISORIES
None.
Area Forecast Discussion...UPDATED National Weather Service Brownsville TX 604 PM CDT Sun Sep 20 2026
New AVIATION
KEY MESSAGES
Updated at 551 PM CDT Sun Sep 20 2026
- Daily low medium chances of rain return Monday and become region-wide by next Tuesday.
- Temperatures remain warm but ease off a few degrees from widespread areas of low 100s along/west I-69 E to mostly upper 90s by Tuesday.
- Extreme risks of heat-related illnesses (level 4/4) are likely to continue for more populated portions of the RGV/Rio Grande Plains through at least Tuesday while the rest of the region experiences moderate to major risks (level 2/4 and 3/4).
- A moderate risk of life-threatening rip currents continues through tonight.
DISCUSSION
Issued at 1206 PM CDT Sun Sep 20 2026
Quiet conditions expected today before a somewhat active weather pattern takes hold early week.
Deeper moisture begins to move into South Texas and rain chances will increase early week as the high pressure overhead weakens a bit and a frontal boundary pushes into central Texas. Low rain chances are expected in the low to mid-valley on Monday but become more widespread and increase to 30-60% on Tuesday. Rain chances up to 50% linger into late week. The bulk of any shower or thunderstorm activity will primarily coincide with peak daytime heating.
Heat Risk will remain Moderate to Extreme over the next week, though increased cloud cover and/or showers and thunderstorms could bring a little relief. Extreme heat risk is primarily expected in more urban/populated areas. Temperatures will still remain above normal with mid to upper 90s to low triple digits, though by Thursday and Friday, could struggle to reach the triple digits with the excess cloudcover and rain chances. Heat indices will peak each afternoon between 105-110 degrees.
There is a moderate risk of rip currents at area beaches. The strongest and most life threatening rips currents often occur near jetties and piers. Use caution if entering the water.
AVIATION
(00Z TAFS)
Issued at 551 PM CDT Sun Sep 20 2026
VFR will prevail at the aerodromes through the next 24 hours, with light to moderate winds with breezy gusts and clear to partly cloudy skies. Convection is possible, but will be too isolated to warrant a mention in the current issuance of TAFs.
MARINE
Issued at 1206 PM CDT Sun Sep 20 2026
Generally favorable conditions will prevail with light to moderate southeasterly winds with seas around 2-3 ft and 5-6 second periods.
Daily chances of showers and thunderstorms could lead to locally enhanced winds and seas.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 80 97 80 95 / 0 20 0 40 HARLINGEN 76 99 75 98 / 0 10 0 40 MCALLEN 80 103 79 100 / 0 20 0 60 RIO GRANDE CITY 78 102 77 100 / 0 10 10 40 SOUTH PADRE ISLAND 82 89 82 89 / 0 10 10 30 BAYVIEW/PORT ISABEL 79 95 79 94 / 0 10 10 30
BRO WATCHES/WARNINGS/ADVISORIES
None.
Wind History for Port Isabel, TX
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KPIL Port Isabel Cameron County Airport US | 8 sm | 55 min | E 13 | 10 sm | Clear | 88°F | 77°F | 70% | 29.83 | |
| KBRO Brownsville South Padre Island International Airport US | 17 sm | 55 min | E 14 | 10 sm | Clear | 90°F | 75°F | 63% | 29.82 | |
| KHRL Valley International Airport US | 24 sm | 56 min | E 17 | 10 sm | Clear | 88°F | 75°F | 66% | 29.82 |
Link to 5 hour of 5 minute data for KSPL
Terminal Aerodrome Forecast (TAF) for KSPL
Wind History Graph: SPL
(wind in knots)
GEOS Local Image of gulf of mexico
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Brownsville, TX,
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