St Marys Rivermouth Surf Forecast and Surf Reports

(North Florida, USA)

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- Hourly Forecast
- 16 Day Forecast
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Spot Information

St Marys Rivermouth Surf Guide

St Marys Rivermouth in North Florida is an exposed river break that has inconsistent surf with no particular seasonal pattern. Offshore winds blow from the southwest. Tends to receive a mix of groundswells and windswells and the ideal swell direction is from the east northeast. The quality of the surf isn't affected by the tide. Even when the surf is up, crowds are unknown.

St Marys Rivermouth Spot Info

Type:	Rating:	Reliability:	Todays Sea Temp*:
River	1	inconsistent	21.9°C*ocean temperature recorded from satellite

Surfing St Marys Rivermouth:

The best conditions reported for surf at St Marys Rivermouth occur when a East-northeast swell combines with an offshore wind direction from the Southwest.

Hourly Forecast

16 Day Forecast

What's the best time of year to surf St Marys Rivermouth (for consistent clean waves)?

julyBest Season: summer

The best time of year for surfing St Marys Rivermouth with consistent clean waves (rideable swell with light / offshore winds) is during Summer and most often the month of July. Clean surfable waves are typically found 44% of the time in July while 31% of the time it tends to be blown out. For the remaining 25% of the time it is considered too small by most surfers but may still be OK for beginners and groms at times.

clean

44%

Surfable waves that hold up well for longer rides in prevailing cross-offshore, offshore or light wind conditions.

blown out

31%

Surfable sized waves that are of poorer quality due to prevailing onshore, cross-onshore or windy conditions (may be preferable for kitesurfing).

too small

25%

Waves usually considered too small for good surf. Some wave-magnet breaks may still work though if conditions are right (on occasion).

Explore St Marys Rivermouth Location Map

Interactive St Marys Rivermouth surf break location map. View information about nearby surf breaks, their wave consistency and rating compared to other spots in the region. Current swell conditions from local buoys are shown along with live wind speed and direction from nearby weather stations. Click icons on the map for more detail. The closest passenger airport to St Marys Rivermouth is Jacksonville International Airport (JAX) in USA, 34 km (21 miles) away (directly). The second nearest airport to St Marys Rivermouth is Jacksonville Nas Airport (NIP), also in USA, 57 km (35 miles) away.

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Please note that some surf spot locations are approximate to protect their exact location while others are not shown at close zoom level.

St Marys Rivermouth Surf Forecasts:

Hourly Forecast

16 Day Forecast

Todays Surf Summary
Thursday, 7 May 2026, 02:57 Local Time

m, °C	Wed	Thursday 07
ft, °F	11PM	2AM	5AM	8AM
Wave (m)	ESE		E	E
Period (s)	7	-	6	6
Wind (km/h)
Wind State	cross- off	cross- off	off	off

Tides at St Marys Rivermouth

Current tide and informaton

For Saint Marys Entrance, North Jetty, Georgia, 2 km from St Marys Rivermouth.

Next High Water: 12:44pm | 1.46m

Next Low Water: 07:08am | 0.3m

NEXT	IS AT (local time)	remaining
high tide
low tide

St Marys Rivermouth Sea Temperature

Sunny with very warm air temperatures, feeling like 27.0 °C once we account for any wind. Sea temperatures (21.9 °C) warm too. Staying warm in the water won't be a problem in board-shorts, but wear at least a rash-vest to keep the UV off.

Today, many surfers would wear a rashvest wetsuit.

Current Temp*: 21.9°C*ocean temperature recorded from satellite