Marine Weather Net

Bonita Beach to Englewood, FL out 20 NM Marine Forecast


TONIGHT

S
WINDS
5 KNOTS

THURSDAY

SE
WINDS
5 - 10
KNOTS

THURSDAY NIGHT

S
WINDS
5 - 10
KNOTS

FRIDAY

S
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
GMZ856 Forecast Issued: 100 PM EST Wed Feb 18 2026

Tonight...South Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 3 Seconds And West 1 Foot At 5 Seconds. Bay And Inland Waters Smooth. Patchy Fog Late This Evening And Overnight.
Thursday...Southeast Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Southeast 1 Foot At 4 Seconds. Bay And Inland Waters Light Chop. Patchy Fog In The Morning.
Thursday Night...South Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 4 Seconds. Bay And Inland Waters Light Chop. Patchy Fog.
Friday...South Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Southwest 1 Foot At 5 Seconds. Bay And Inland Waters Light Chop. Patchy Fog In The Morning.
Friday Night...South Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 5 Seconds. Bay And Inland Waters Smooth. Patchy Fog.
Saturday...South Winds Around 5 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 5 Seconds. Bay And Inland Waters Smooth. Patchy Fog In The Morning.
Saturday Night...Southwest Winds Around 5 Knots. Seas 1 Foot Or Less. Bay And Inland Waters Smooth. Patchy Fog.
Sunday...Southwest Winds 5 To 10 Knots, Becoming West 10 To 15 Knots In The Afternoon. Seas 1 Foot Or Less, Then 2 To 3 Feet In The Afternoon. Bay And Inland Waters A Moderate Chop. Patchy Fog In The Morning. A Slight Chance Of Showers In The Morning, Then A Chance Of Showers In The Afternoon.
Sunday Night...Northwest Winds 20 To 25 Knots, Becoming North 25 To 30 Knots After Midnight. Seas 3 To 5 Feet, Occasionally To 6 Feet, Building To 5 To 7 Feet, Occasionally To 9 Feet After Midnight. Bay And Inland Waters Very Rough.
Monday...North Winds 25 To 30 Knots, Becoming Northwest 20 To 25 Knots In The Afternoon. Seas 5 To 8 Feet, Occasionally To 10 Feet. Bay And Inland Waters Very Rough.
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Area Forecast Discussion
National Weather Service Tampa Bay Ruskin FL
113pm EST Wednesday Feb 18 2026

...New

.KEY MESSAGES... - Temperatures will increase through the rest of the week, with high temperatures running about 5-10 degrees above normal by Friday.

- There is a high chance late night and early morning fog formation each day into the weekend, along with sea fog over the coastal waters.

- Hazardous marine conditions and much cooler temperatures return early next week.

Issued at 112pm EST Wednesday Feb 18 2026

Temperatures as of early this afternoon have already climbed into the upper 70s to low 80s. This warming trend will be the main story throughout the remainder of the week. In the upper levels. broad low amplitude ridging exists across the Gulf and the Florida Peninsula. At the surface, high pressure continues to feature, but will become more centered to the east of the area out over the Atlantic. This will lead to more southerly flow today. The PW values (Precipitable Water values) from the 12z TBW sounding was 0.76 inches. This value is near the climatological average for mid-Februrary.

Winds will decouple overnight with high pressue in place. Surface dewpoints continue to increase with warm/moist advection. The Gulf waters are cool with water temperatures in the upper 50s to lower 60s. The combination of warm/moist air moving over cooler water will lead to fog development over the Gulf later this evening and over the land as well. Confidence in fog formation overnight is high. This fog should lift overland shortly after sunrise. Models have been hinting that the fog over the Gulf, may lingering into the late morning hours. This pattern will remain consistent through Sunday with medium to high chances for fog development each night. Temperatures will slowly climb each day with highs in the upper 70s to low 80s along the coast on Friday and Saturday with high in the mid to upper 80s inland on Friday and Saturday. There is a good chance of highs reaching the 90 degree mark inland on Saturday.

A cold front will push southward across the Southeastern U.S. late Saturday as an upper level trough moves across the Tennessee River Valley into the Mid-Atlantic. Cyclogenesis will take place off the Carolina coast in advance of the trough. The cold front will approach the TBW CWA (County Warning Area) early Sunday morning. Any precipitation with the front will be light and the average amounts will be around a tenth of an inch. Overall, the precipitation with this system will not do anything to help with the ongoing drought across the region.

There will be a significant cool down behind the front but not like what we saw with the last system in late January and early February. Lows on Monday morning will drop down into the upper 30s across the Nature Coast to upper 40s across southwest Florida. Highs on Monday will only be in the low to mid 60s. The coldest morning will be Tuesday morning with a freeze currently forecast across the Nature Coast with upper 30s to low 40s along coast from Tampa Bay southwards. Temperatures will moderate throughout the remainder of the week.

Marine
Issued at 112pm EST Wednesday Feb 18 2026

Atlantic high pressure ridging into the eastern Gulf will hold through the rest of the week, with southerly to southeasterly winds remaining less than headline criteria. Under this southerly flow, some areas of sea fog will be possible over the coastal waters later today and tonight. The next cold front is forecast to push into the waters on Sunday, bringing increasing chances of rain beginning Saturday night and and winds increasing to advisory levels on Sunday.

Fire Weather
Issued at 212pm EST Wednesday Feb 18 2026

Humidity increases through the rest of the week. Patchy fog is expected over the next several mornings. A cold front will bring drier and cooler air into the region early next week.

NOAA Tampa FL Office: Watches - Warnings - Advisories
FL...None. Gulf waters...None.