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Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
St Marys Rivermouth surfForecast / Florida – North / USA
48hr Weather and Surf, issued 12 pm Wednesday 17 Dec 2025 ESTForecast update in hr min s Forecast update imminent
St Marys Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's St Marys Rivermouth sea temperature is
16.2° C
(Which is 5.4°C colder than average for this time of year)How big are the waves at St Marys Rivermouth today?
The current surf forecast for St Marys Rivermouth at 5PM is: 0.6m 4s primary swell from a Northeast direction (forecast issued at 12:00pm December 17). An open ocean swell of 0.4m 10s is not directed at the surf break, a second open ocean swell of 0.4m 5s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 1.5ft (0.5m) | 10s |
| Afternoon (17 Dec) | 1ft (0.3m) | 6s |
| Evening (17 Dec) | 1.5ft (0.5m) | 10s |
Table - waves today at St Marys Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 5 | 3 | 4 | 10 | 10 | 5 | 9 | 9 | 10 | 10 | 9 | 7 | 7 | 8 | 8 | 18 | 17 | 9 | 3 | 16 | 15 | 15 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 55 | 9 | 6 | 8 | 54 | 52 | 49 | 29 | 29 | 20 | 34 | 6 | 0 | 0 | 0 | 0 | 6 | 6 | 0 | 3 | 5 | 4 | 4 | 79 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | glass | cross | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- off | cross | cross | cross | cross- on | cross- on | on |
High Tide / height (m) | 6:23PM 1.54 | 6:56AM 1.85 | 7:06PM 1.55 | 7:37AM 1.87 | 7:47PM 1.55 | |||||||||||||||||||
Low Tide / height (m) | 12:59PM 0.18 | 12:48AM 0.09 | 1:41PM 0.14 | 1:29AM 0.07 | 2:21PM 0.12 | 2:08AM 0.04 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | - | 7:16 | - | - | - | - | - | - | - | 7:16 | - | - | - | - | - | - | - |
| Sunset | - | - | 5:25 | - | - | - | - | - | - | - | 5:27 | - | - | - | - | - | - | - | 5:27 | - | - | - | - | - |
 | | |  |  | | | | | | | | |  | | | |  | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 17 | 16 | 18 | 20 | 20 | 20 | 20 | 21 | 23 | 21 | 21 | 20 | 19 | 19 | 20 | 20 | 18 | 20 | 15 | 12 | 10 | 9 | 10 |
| Feels °C (?) | 14 | 15 | 14 | 17 | 21 | 21 | 20 | 20 | 21 | 21 | 20 | 20 | 19 | 18 | 19 | 19 | 19 | 16 | 15 | 10 | 7 | 5 | 4 | 6 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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