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St Marys Rivermouth Surf Forecast
/ Florida – North (78 breaks) / Florida (155 breaks) /
Surf Forecasts:
St Marys Rivermouth surfForecast / Florida – North / USA
16 Day Weather and Surf, issued 1 pm Saturday 09 May 2026 EDTForecast 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
22.4° C
(Which is 1.6°C colder than average for this time of year)Best Forecast Surf Conditions for St Marys Rivermouth this week:
The surf forecast for St Marys Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (May 14) at 2AM. The primary swell is predicted to be 0.9m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at St Marys Rivermouth in the next 16 days are 1.5m 9s and forecast to arrive on Wednesday (May 13) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (May 16) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 14th May) | 3ft (0.9m) 8s |
| Best Surf | 2AM (Thu 14th May) | 3ft (0.9m) 8s |
| Most Powerful | 2AM (Wed 13th May) | 5ft (1.5m) 9s |
Table - best surf conditions forecast for St Marys Rivermouth over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 23mm), heaviest during Mon night. Warm (max 29°C on Mon afternoon, min 19°C on Tue morning). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Wed night. Warm (max 24°C on Thu morning, min 18°C on Tue afternoon). Winds decreasing (fresh winds from the NE on Tue afternoon, calm by Thu morning). | ||||||||||||||||||||
Sat 9 | Sunday 10 | Monday 11 | Tuesday 12 | Wednesday 13 | Thursday 14 | Friday 15 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
E 8 | E 9 | E 9 | SE 4 | ENE 9 | E 9 | SE 4 | E 8 | E 9 | NE 5 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 5 | ENE 8 | ENE 8 | |
12 | 14 | 13 | 15 | 16 | 6 | 8 | 6 | 6 | 103 | 339 | 260 | 208 | 115 | 49 | 29 | 29 | 90 | 22 | 35 | 19 | |
Wind (km/h) | |||||||||||||||||||||
cross | off | cross-off | cross-off | cross-off | off | glassy | off | cross-on | on | on | on | on | cross-off | on | cross | cross | cross-on | cross-on | cross | cross | |
High Tide | 2:21PM1.48m | 2:43AM1.62m | 3:18PM1.54m | 3:41AM1.61m | 4:17PM1.64m | 4:41AM1.63m | 5:16PM1.76m | 5:39AM1.66m | 6:12PM1.90m | 6:35AM1.70m | 7:06PM2.03m | 7:29AM1.73m | 7:58PM2.13m | 8:23AM1.74m | |||||||
Low Tide | 8:49PM0.33m | 9:39AM0.26m | 9:53PM0.30m | 10:31AM0.18m | 10:56PM0.24m | 11:22AM0.09m | 11:56PM0.16m | 12:14PM-0.01m | 00:55AM0.06m | 1:06PM-0.10m | 1:51AM-0.04m | 1:57PM-0.18m | 2:46AM-0.11m | ||||||||
 |  |  | |  |  | | | |  |  | | |  |  | |  | | |  | | |
 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 |
 | 8:08 | — | — | 8:08 | — | — | 8:09 | — | — | 8:10 | — | — | 8:10 | — | — | 8:12 | — | — | 8:13 | — | 8:13 |
3 | 2 | 2 | 1 | 1 | — | 1 | 13 | — | — | — | — | — | 1 | — | — | — | — | — | — | — | |
Temp °C | 26 | 21 | 21 | 24 | 24 | 27 | 29 | 24 | 20 | 19 | 21 | 22 | 22 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 24 |
27 | 23 | 23 | 26 | 25 | 29 | 29 | 27 | 21 | 16 | 19 | 21 | 20 | 25 | 24 | 22 | 25 | 24 | 23 | 23 | 23 | |
Swell 1 Height (m) Direction Period (s) | ENE 6 | SE 5 | E 9 | NE 5 | SE 5 | SE 5 | E 9 | SE 5 | SE 5 | SE 5 | SE 6 | ESE 7 | ESE 7 | ENE 8 | ENE 8 | E 8 | E 8 | SE 7 | ESE 7 | ENE 8 | ENE 8 |
 kJ | 3 | 5 | 13 | 1 | 5 | 6 | 6 | 11 | 10 | 4 | 6 | 5 | 4 | 115 | 49 | 29 | 29 | 12 | 9 | 35 | 19 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 9 | SSE 5 | SE 9 | ENE 9 | E 9 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | — | — | SE 7 | SE 7 | SE 7 | SE 7 | ESE 9 | E 14 | ESE 7 | ESE 7 |
| kJ | 12 | 14 | 2 | 3 | 16 | 6 | 14 | 14 | 13 | 12 | 11 | — | — | 7 | 12 | 7 | 12 | 9 | 4 | 9 | 9 |
Swell 3 Height (m) Direction Period (s) | ESE 6 | ENE 5 | ESE 6 | E 13 | E 12 | ESE 12 | SE 8 | E 8 | E 9 | SE 8 | — | — | — | — | ESE 10 | ESE 10 | SE 10 | E 14 | ESE 9 | E 13 | — |
| kJ | 4 | 3 | 4 | 3 | 3 | 14 | 3 | 6 | 6 | 2 | — | — | — | — | 10 | 9 | 4 | 4 | 8 | 3 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 4 | SSE 4 | — | SE 4 | NNE 3 | — | NE 5 | ENE 9 | ENE 9 | ENE 9 | — | — | — | E 2 | E 8 | E 5 | SE 4 | SSE 4 |
| kJ | — | — | — | 15 | 5 | — | 8 | 4 | — | 103 | 339 | 260 | 208 | — | — | — | 1 | 90 | 22 | 9 | 11 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 773 | 69 | 199 | 748 | 199 | 778 | 112 | 322 | 1269 | 364 | 364 | 274 | 364 | 38 | 90 | 483 | 1116 | 607 | 1060 | 746 | 551 |
Best forecast wave conditions in North Florida | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our St Marys Rivermouth surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the St Marys Rivermouth Surf forecast
The above surf forecast table for St Marys Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at St Marys Rivermouth can be found by selecting the local surf guide option on the grey menu. Our St Marys Rivermouth surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (St Marys Rivermouth) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for St Marys Rivermouth may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
St Marys Rivermouth is 3 km (2 miles) from Fernandina Beach. If you plan a vacation in North Florida, look for hotels and other accommodation in Fernandina Beach. Fernandina Beach has rooms for a wide range of budgets as well as car hire and transport links.
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