Marine Weather and Tide Forecast for Fernandina Beach, FL
 | Sunrise 6:28 AM Sunset 8:16 PM Moonrise 11:55 PM Moonset 9:13 AM |
AMZ450 Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 912 Pm Edt Sat May 17 2025
Rest of tonight - West winds 5 to 10 knots. Seas around 2 feet. Wave detail: south 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop.
Sunday - Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas around 2 feet. Wave detail: east 2 feet at 8 seconds. Intracoastal waters light chop.
Sunday night - Southwest winds 5 to 10 knots, becoming west after midnight. Seas around 2 feet. Wave detail: southeast 2 feet at 8 seconds. Intracoastal waters light chop.
Monday - West winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet. Intracoastal waters light chop.
Monday night - South winds 5 to 10 knots, becoming southwest after midnight. Seas around 2 feet. Wave detail: southeast 2 feet at 4 seconds. Intracoastal waters light chop.
Tuesday and Tuesday night - Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds. Intracoastal waters a moderate chop.
Wednesday through Thursday - Northwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 912 Pm Edt Sat May 17 2025
Synopsis -
prevailing offshore flow will continue through the rest of the weekend but weaken enough to allow afternoon sea breeze development across the nearshore waters. Isolated showers and Thunderstorms may develop along a stalled front Sunday across the georgia coastal waters before lifting north of the region next week. Offshore flow will strengthen Wednesday next week as a late season cool front approaches. The front will pass through the waters Wednesday evening and bring isolated Thunderstorm chances with it.
Gulf stream -
the approximate location of the west wall of the gulf stream as of may 17, 2025 at 1200 utc - .
65 nautical miles east of flagler beach. 80 nautical miles east of saint augustine beach. 89 nautical miles east of jacksonville beach. 99 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.
prevailing offshore flow will continue through the rest of the weekend but weaken enough to allow afternoon sea breeze development across the nearshore waters. Isolated showers and Thunderstorms may develop along a stalled front Sunday across the georgia coastal waters before lifting north of the region next week. Offshore flow will strengthen Wednesday next week as a late season cool front approaches. The front will pass through the waters Wednesday evening and bring isolated Thunderstorm chances with it.
the approximate location of the west wall of the gulf stream as of may 17, 2025 at 1200 utc - .
65 nautical miles east of flagler beach. 80 nautical miles east of saint augustine beach. 89 nautical miles east of jacksonville beach. 99 nautical miles east southeast of st simons island.
this data courtesy of the naval oceanographic office.
7 Day Forecast for Marine Location Near Fernandina Beach, FL
NEW! Add second zone forecast
| Fernandina Beach Click for Map Sat -- 12:11 AM EDT Moonrise Sat -- 12:25 AM EDT 6.65 feet High Tide Sat -- 06:29 AM EDT Sunrise Sat -- 06:32 AM EDT 1.07 feet Low Tide Sat -- 10:13 AM EDT Moonset Sat -- 12:45 PM EDT 5.62 feet High Tide Sat -- 06:18 PM EDT 1.02 feet Low Tide Sat -- 08:15 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
Fernandina Beach, Amelia River, Florida, Tide feet
| 12 am |
| 6.6 |
| 1 am |
| 6.5 |
| 2 am |
| 5.9 |
| 3 am |
| 4.6 |
| 4 am |
| 3.1 |
| 5 am |
| 1.9 |
| 6 am |
| 1.2 |
| 7 am |
| 1.2 |
| 8 am |
| 1.8 |
| 9 am |
| 2.8 |
| 10 am |
| 3.9 |
| 11 am |
| 4.8 |
| 12 pm |
| 5.5 |
| 1 pm |
| 5.6 |
| 2 pm |
| 5.1 |
| 3 pm |
| 4.1 |
| 4 pm |
| 2.7 |
| 5 pm |
| 1.6 |
| 6 pm |
| 1.1 |
| 7 pm |
| 1.2 |
| 8 pm |
| 2 |
| 9 pm |
| 3.2 |
| 10 pm |
| 4.4 |
| 11 pm |
| 5.5 |
| St. Johns River Entrance Click for Map Sat -- 12:11 AM EDT Moonrise Sat -- 02:52 AM EDT -0.00 knots Slack Sat -- 05:19 AM EDT -1.82 knots Max Ebb Sat -- 06:29 AM EDT Sunrise Sat -- 09:40 AM EDT 0.00 knots Slack Sat -- 10:13 AM EDT Moonset Sat -- 12:15 PM EDT 1.55 knots Max Flood Sat -- 02:52 PM EDT -0.00 knots Slack Sat -- 05:26 PM EDT -1.75 knots Max Ebb Sat -- 08:15 PM EDT Sunset Sat -- 08:50 PM EDT 0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
St. Johns River Entrance, Florida Current (3), knots
| 12 am |
| 2.3 |
| 1 am |
| 1.8 |
| 2 am |
| 0.9 |
| 3 am |
| -0.2 |
| 4 am |
| -1.2 |
| 5 am |
| -1.8 |
| 6 am |
| -1.7 |
| 7 am |
| -1.3 |
| 8 am |
| -0.8 |
| 9 am |
| -0.3 |
| 10 am |
| 0.2 |
| 11 am |
| 1 |
| 12 pm |
| 1.5 |
| 1 pm |
| 1.4 |
| 2 pm |
| 0.7 |
| 3 pm |
| -0.1 |
| 4 pm |
| -1.1 |
| 5 pm |
| -1.7 |
| 6 pm |
| -1.7 |
| 7 pm |
| -1.2 |
| 8 pm |
| -0.5 |
| 9 pm |
| 0.1 |
| 10 pm |
| 0.6 |
| 11 pm |
| 1.3 |
Area Discussion for Jacksonville, FL
Hide HelpNOTE: mouseover dotted underlined text for definition
FXUS62 KJAX 172331 AFDJAX
Area Forecast Discussion National Weather Service Jacksonville FL 731 PM EDT Sat May 17 2025
New AVIATION
NEAR TERM
(through Tonight)...
Broadly, a flattened upper ridge has set up a deep westerly flow across the area today. The surface ridge remains positioned across southern FL while a slowing and decaying front comes to a halt just north of the Altamaha River in SE GA. A few showers and potentially an isolated thunderstorm may develop in the vicinity of that boundary; chances for that have been kept at around 20%.
Further south, a very dry low level airmass will keep conditions conditionally stable through the rest of the afternoon.
Temperatures are surged into the 90s this afternoon as breezy offshore winds helped realize a very deep mixed layer. Afternoon high temperature readings are likely to tie or surpass daily record values. Temperatures spiking up to the upper 90s will be possible across NE FL. Shading from convective debris clouds will be helpful in keeping temperatures a little less hot for portions of SE GA this afternoon, generally readings will be lower 90s north of Waycross (US-82).
Tonight...the stationary boundary will hover near the north edge of the forecast area while the pattern as whole remains relatively the same. Near-surface gulf moisture will seep across NE FL again tonight offering low stratus and potential for fog development, mainly along the I-75 corridor. Near the stalled boundary, lingering cloud cover will keep inland SE GA lows in the low/mid 70s while thinner cirrus allows better cooling across NE FL where lows are expected to be in the upper 60s inland.
SHORT TERM
(Sunday through Monday night)
Showers and storms anticipated to develop over southeast Georgia on Sunday as a cold front presses down into Georgia, allowing for moist flow and weak waves to cross over the northern portion of the forecast area. There is a potential for stronger storms to develop on Sunday with the main threats associated with these storms being powerful wind gusts, hail, and frequent lightning.
Primarily dry weather is anticipated for northeast Florida on Sunday due to high pressure ridging extending from out of the east over the Florida peninsula. Dry weather will become area-wide on Monday as high pressure to the north moves off to the east and the influence of ridging over Florida slides northward into southeast Georgia. High temperatures for this period will be in the lower to mid 90s with overnight low temperatures dropping down into the mid to upper 60s and lower 70s.
LONG TERM
(Tuesday through next Saturday)
Dry weather will be in place on Tuesday followed by showers and storms developing over southeast Georgia on Wednesday as a frontal boundary presses in from out of the northwest. Drier weather conditions are expected to return by the end of the week as drier air and high pressure ridging extends over the forecast area.
Weather conditions will become more dry and stable before the end of the week as drier air and high pressure settles in over the region. High temperatures for next week will start off well above the seasonal average, with max temps reaching into the mid to upper 90s, with temps experiencing a slight cooling trend after midweek and becoming closer to the seasonal average by the end of the week.
AVIATION
(00Z TAFS)
Issued at 719 PM EDT Sat May 17 2025
VFR prevails for the first part of the night before low stratus with some patchy FG moves in from the Gulf after 06Z. GNV and VQQ have the highest chances for IFR, which remains included as a TEMPO in the latest forecast. Uncertainty does increase east of VQQ, though still expecting these conditions to make it to JAX and SGJ at times towards sunrise and possibly into CRG briefly.
Conditions remain dry Sunday with a sea breeze making it only across immediate coastal airfields. Some SHRA or perhaps a TSRA is possible at SSI Sunday afternoon and evening, though confidence and probability too low at this time to include in the latest forecast.
MARINE
Issued at 149 PM EDT Sat May 17 2025
Prevailing offshore flow will continue through the weekend but weaken enough to allow afternoon sea breeze development across the nearshore waters. Isolated showers and thunderstorms may develop along a stalled front this afternoon and again Sunday across the Georgia coastal waters before lifting north of the region next week. Offshore flow will strengthen Wednesday next week as a late season cool front approaches. The front will pass through the waters Wednesday evening and bring isolated thunderstorm chances with it.
Rip Currents: Little risk (does't mean a zero-risk) of rip currents amid breezy offshore flow today. Weakening flow will allow sea breeze to push onshore Sunday and Monday resulting in increasing risk, around a low-end Moderate risk during the afternoons.
FIRE WEATHER
A high pressure ridge will stretch across south FL today, as a frontal boundary settles across central GA. This boundary will linger across GA through Sunday, before lifting back to the north on Monday. It will be hot and largely dry this weekend. There is a low chance for showers and storms across SE GA Saturday and Sunday due to the proximity of the frontal zone, and upper waves.
The high pressure ridge will sink further to the south southeast early next week, as a cold front approaches from the northwest.
This front will move across the area Wednesday into Thursday, bringing potential for a round of showers and thunderstorms.
CLIMATE
Issued at 354 AM EDT Sat May 17 2025
Daily Record High Temperatures through Wednesday at our designated climate sites:
Sat 5/17 Sun 5/18 Mon 5/19 Tues 5/20 Wed 5/21 -------------------------------------------------- Jacksonville 96/1995 96/1899 97/1960 99/1962 99/1938 Gainesville 96/1915 97/1930 99/1899 97/1938 100/1938 Alma, GA 94/2001 95/2001 97/1960 99/1962 97/1962 Craig Airport 93/2001 93/2001 92/2006 97/2006 98/2006
PRELIMINARY POINT TEMPS/POPS
AMG 71 92 68 93 / 10 40 20 10 SSI 74 90 72 89 / 0 20 20 0 JAX 69 97 68 97 / 0 10 10 0 SGJ 70 94 69 93 / 0 0 0 0 GNV 67 95 65 96 / 0 0 0 0 OCF 67 93 67 95 / 0 0 10 0
JAX WATCHES/WARNINGS/ADVISORIES
FL...None.
GA...None.
AM...None.
Area Forecast Discussion National Weather Service Jacksonville FL 731 PM EDT Sat May 17 2025
New AVIATION
NEAR TERM
(through Tonight)...
Broadly, a flattened upper ridge has set up a deep westerly flow across the area today. The surface ridge remains positioned across southern FL while a slowing and decaying front comes to a halt just north of the Altamaha River in SE GA. A few showers and potentially an isolated thunderstorm may develop in the vicinity of that boundary; chances for that have been kept at around 20%.
Further south, a very dry low level airmass will keep conditions conditionally stable through the rest of the afternoon.
Temperatures are surged into the 90s this afternoon as breezy offshore winds helped realize a very deep mixed layer. Afternoon high temperature readings are likely to tie or surpass daily record values. Temperatures spiking up to the upper 90s will be possible across NE FL. Shading from convective debris clouds will be helpful in keeping temperatures a little less hot for portions of SE GA this afternoon, generally readings will be lower 90s north of Waycross (US-82).
Tonight...the stationary boundary will hover near the north edge of the forecast area while the pattern as whole remains relatively the same. Near-surface gulf moisture will seep across NE FL again tonight offering low stratus and potential for fog development, mainly along the I-75 corridor. Near the stalled boundary, lingering cloud cover will keep inland SE GA lows in the low/mid 70s while thinner cirrus allows better cooling across NE FL where lows are expected to be in the upper 60s inland.
SHORT TERM
(Sunday through Monday night)
Showers and storms anticipated to develop over southeast Georgia on Sunday as a cold front presses down into Georgia, allowing for moist flow and weak waves to cross over the northern portion of the forecast area. There is a potential for stronger storms to develop on Sunday with the main threats associated with these storms being powerful wind gusts, hail, and frequent lightning.
Primarily dry weather is anticipated for northeast Florida on Sunday due to high pressure ridging extending from out of the east over the Florida peninsula. Dry weather will become area-wide on Monday as high pressure to the north moves off to the east and the influence of ridging over Florida slides northward into southeast Georgia. High temperatures for this period will be in the lower to mid 90s with overnight low temperatures dropping down into the mid to upper 60s and lower 70s.
LONG TERM
(Tuesday through next Saturday)
Dry weather will be in place on Tuesday followed by showers and storms developing over southeast Georgia on Wednesday as a frontal boundary presses in from out of the northwest. Drier weather conditions are expected to return by the end of the week as drier air and high pressure ridging extends over the forecast area.
Weather conditions will become more dry and stable before the end of the week as drier air and high pressure settles in over the region. High temperatures for next week will start off well above the seasonal average, with max temps reaching into the mid to upper 90s, with temps experiencing a slight cooling trend after midweek and becoming closer to the seasonal average by the end of the week.
AVIATION
(00Z TAFS)
Issued at 719 PM EDT Sat May 17 2025
VFR prevails for the first part of the night before low stratus with some patchy FG moves in from the Gulf after 06Z. GNV and VQQ have the highest chances for IFR, which remains included as a TEMPO in the latest forecast. Uncertainty does increase east of VQQ, though still expecting these conditions to make it to JAX and SGJ at times towards sunrise and possibly into CRG briefly.
Conditions remain dry Sunday with a sea breeze making it only across immediate coastal airfields. Some SHRA or perhaps a TSRA is possible at SSI Sunday afternoon and evening, though confidence and probability too low at this time to include in the latest forecast.
MARINE
Issued at 149 PM EDT Sat May 17 2025
Prevailing offshore flow will continue through the weekend but weaken enough to allow afternoon sea breeze development across the nearshore waters. Isolated showers and thunderstorms may develop along a stalled front this afternoon and again Sunday across the Georgia coastal waters before lifting north of the region next week. Offshore flow will strengthen Wednesday next week as a late season cool front approaches. The front will pass through the waters Wednesday evening and bring isolated thunderstorm chances with it.
Rip Currents: Little risk (does't mean a zero-risk) of rip currents amid breezy offshore flow today. Weakening flow will allow sea breeze to push onshore Sunday and Monday resulting in increasing risk, around a low-end Moderate risk during the afternoons.
FIRE WEATHER
A high pressure ridge will stretch across south FL today, as a frontal boundary settles across central GA. This boundary will linger across GA through Sunday, before lifting back to the north on Monday. It will be hot and largely dry this weekend. There is a low chance for showers and storms across SE GA Saturday and Sunday due to the proximity of the frontal zone, and upper waves.
The high pressure ridge will sink further to the south southeast early next week, as a cold front approaches from the northwest.
This front will move across the area Wednesday into Thursday, bringing potential for a round of showers and thunderstorms.
CLIMATE
Issued at 354 AM EDT Sat May 17 2025
Daily Record High Temperatures through Wednesday at our designated climate sites:
Sat 5/17 Sun 5/18 Mon 5/19 Tues 5/20 Wed 5/21 -------------------------------------------------- Jacksonville 96/1995 96/1899 97/1960 99/1962 99/1938 Gainesville 96/1915 97/1930 99/1899 97/1938 100/1938 Alma, GA 94/2001 95/2001 97/1960 99/1962 97/1962 Craig Airport 93/2001 93/2001 92/2006 97/2006 98/2006
PRELIMINARY POINT TEMPS/POPS
AMG 71 92 68 93 / 10 40 20 10 SSI 74 90 72 89 / 0 20 20 0 JAX 69 97 68 97 / 0 10 10 0 SGJ 70 94 69 93 / 0 0 0 0 GNV 67 95 65 96 / 0 0 0 0 OCF 67 93 67 95 / 0 0 10 0
JAX WATCHES/WARNINGS/ADVISORIES
FL...None.
GA...None.
AM...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| FRDF1 - 8720030 - Fernandina Beach, FL | 0 mi | 59 min | SE 4.1G | 88°F | 81°F | 29.90 | ||
| KBMG1 | 7 mi | 59 min | 82°F | 29.91 | ||||
| 41112 - Offshore Fernandina Beach, FL (132) | 10 mi | 33 min | 79°F | 2 ft | ||||
| BLIF1 | 19 mi | 59 min | SSE 5.1G | 85°F | 29.94 | |||
| MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL | 19 mi | 59 min | S 2.9G | 81°F | 81°F | 29.95 | ||
| DMSF1 | 20 mi | 59 min | 82°F | |||||
| LTJF1 | 20 mi | 59 min | 82°F | 71°F | ||||
| NFDF1 | 20 mi | 59 min | SW 1G | 85°F | 29.92 | 64°F | ||
| JXUF1 | 23 mi | 59 min | 83°F | |||||
| BKBF1 | 35 mi | 59 min | WSW 5.1G | 88°F | 29.93 |
Wind History for Fernandina Beach, FL
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KFHB FERNANDINA BEACH MUNI,FL | 4 sm | 14 min | S 07 | 10 sm | Clear | 82°F | 70°F | 66% | 29.92 | |
| KJAX JACKSONVILLE INTL,FL | 17 sm | 33 min | SSW 07 | 10 sm | Mostly Cloudy | 82°F | 66°F | 58% | 29.91 | |
| KNRB MAYPORT NS (ADM DAVID L MCDONALD FIELD),FL | 20 sm | 37 min | S 04 | 10 sm | Clear | 84°F | 70°F | 62% | 29.93 | |
| KCRG JACKSONVILLE EXECUTIVE AT CRAIG,FL | 23 sm | 36 min | S 05 | 10 sm | Clear | 82°F | 72°F | 70% | 29.93 |
Link to 1 hour of 5 minute data for KFHB
Terminal Aerodrome Forecast (TAF) for KFHB
Wind History Graph: FHB
(wind in knots)
GEOS Local Image of southeast
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Jacksonville, FL,
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