Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM Marine Forecast
| This Afternoon...Northeast To East Winds 15 To 20 Knots, Becoming Northeast And Decreasing To 10 To 15 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet, Subsiding To 3 To 5 Feet, Occasionally To 7 Feet. Wave Detail: Northeast To East 5 Feet At 6 Seconds. Isolated Showers. |
| Tonight...Northeast Winds 10 To 15 Knots, Becoming North To Northeast. Seas 2 To 4 Feet, Occasionally To 5 Feet, Subsiding To 2 To 3 Feet. Wave Detail: Northeast To East 3 Feet At 6 Seconds, Becoming Northeast To East 2 Feet At 5 Seconds. Isolated Showers. |
| Friday...North To Northeast Winds Near 10 Knots, Becoming Northeast And Decreasing To 5 To 10 Knots. Seas 2 To 3 Feet, Subsiding To Around 2 Feet. Wave Detail: Northeast 2 Feet At 5 Seconds. |
| Friday Night...Northeast Winds 5 To 10 Knots. Seas 1 To 2 Feet. |
| Saturday...Northeast Winds 5 To 10 Knots. Seas 1 To 2 Feet. |
| Saturday Night...Northeast Winds 5 To 10 Knots, Becoming Northeast To East And Decreasing To Near 5 Knots. Seas 1 To 2 Feet. |
| Sunday...Northeast To East Winds 5 To 10 Knots. Seas 1 To 2 Feet. |
| Sunday Night...East Winds 5 To 10 Knots, Becoming East To Southeast. Seas 1 To 2 Feet. |
| Monday...East To Southeast Winds Near 5 Knots, Becoming Northeast To East. Seas 1 To 2 Feet. |
| Monday Night...North To Northeast Winds Near 5 Knots, Becoming North. Seas 1 To 2 Feet. |
| Area Forecast Discussion National Weather Service Key West FL 1242pm EST Thu Dec 25 2025 .PREVIOUS Issued at 1052am EST Thu Dec 25 2025 A beautiful Christmas Day in the Florida Keys! Apart from the Upper Keys, the rest of the island chain is currently cloud-free. Temperatures are in the mid 70s and dew points in the mid 60s making for a really nice start to the holiday. Along the Reef, winds are near 15 knots. This morning's KKEY sounding reveals a dry profile with only 0.84 inches of PWAT (Precipitable Water) measured, which is below the 25 percentile according to Storm Prediction Center Climatology. Through tonight, dry air is expected to suppress any showers from developing, and cloud coverage will remain limited. Moderate breezes throughout the coastal waters will slacken to gentle to moderate, though, small craft should exercise until winds decrease and seas subside in the Straits, as breezes are moderate to occasionally fresh in those waters. The forecast package did not need any updates at this time. Happy Holidays! .FORECAST... Issued at 430am EST Thu Dec 25 2025 Surface high pressure across the northeastern Gulf will maintain gentle to moderate breezes for today (Christmas Day), except moderate to fresh across the Straits of Florida. The high will continue to slowly meander to the southeast over the coming days leading to further slackening breezes. By the weekend, breezes will mostly light, though, there may be some periods of light to gentle. Also, breezes may become variable at times as the high will virtually be right overhead especially over the weekend into early next week. Moisture remains shallow across the area, though, we cannot rule out a few brief quick moving sprinkles or showers today and tonight. Therefore, slight chances (10%) remains in the forecast. Most of this activity will only be capable of producing a trace to perhaps a few hundredths of an inch of rainfall. In addition, a modified continental air mass will remain over the Keys which will help to keep humidity in check for the next several days. Looking ahead to the final days of 2025, numerical guidance continues to show indications of a potent front moving through the area. The timing of the front appears to be sometime Tuesday/Tuesday evening next week. The magnitude and strength of this front continues to be uncertain. Therefore, the main takeaway continues to be a cooler regime, dip in humidity, slight chances of showers, and another period of potentially breezy conditions. Stay tuned. Marine Issued at 1052am EST Thu Dec 25 2025 Small craft should exercise caution until winds decrease and seas subside in the Straits of Florida. From synopsis, high pressure centered over the northeastern Gulf supports gentle to moderate northeast to east breezes, except moderate to fresh across the Straits of Florida. The high will weaken as it continues to drift slowly southeastward through the weekend, leading to slackening breezes. NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...None. |
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