St Marys Rivermouth Surf Break

Lat Long: 30.70° N 81.43° W

St Marys Rivermouth 48 hour detailed Surf Forecast

Issued: 7 am 21 Sep 2026 (local time)

Forecast update in  hr  min

Today's St Marys Rivermouth sea temperature is
29.0°C
1.6° 

St Marys Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at St Marys Rivermouth today (21 Sep):

  • Morning surf: Morning surf (21 Sep, local time) - 1.5ft (0.4m), 6s period with NE swell.
  • Afternoon surf: Afternoon surf (21 Sep, local time) - 1.5ft (0.4m), 8s period with ENE swell.
  • Evening surf: Evening surf (21 Sep, local time) - 1ft (0.3m), 7s period with ENE swell.

The current surf forecast for St Marys Rivermouth at 3PM is: 0.4m 8s primary swell from a East-northeast direction (forecast issued at 07:00am September 21). An open ocean swell of 0.4m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 Sep)1.5ft (0.4m)6s
Afternoon (21 Sep)1.5ft (0.4m)8s
Evening (21 Sep)1ft (0.3m)7s

Table - waves today at St Marys Rivermouth. (Swell directed towards the surf break)


Short Range Forecast

Moderate rain (total 13mm), heaviest on Wed night. Warm (max 28°C on Mon afternoon, min 25°C on Mon morning). Wind will be generally light.

Monday
21
Tuesday
22
Wednesday
23
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
NE
6
0.4
NE
6
0.3
NE
6
0.4
ENE
8
0.4
ENE
8
0.4
NE
7
0.3
ENE
7
0.3
ESE
8
0.3
ESE
8
0.3
ESE
8
0.3
ENE
7
0.3
ENE
7
0.3
ESE
8
0.3
ENE
7
0.3
ESE
7
0.3
E
8
0.4
E
7
0.3
ENE
7
0.3
ENE
7
0.3
ESE
8
0.4
ENE
7
0.3
ENE
7
0.3
ENE
7
Wave Graph
Metric surfscale
Energy kJ
10
9
6
24
19
14
10
12
12
13
9
9
11
10
10
11
15
10
10
13
21
10
9
Wind (km/h)
0
W
5
NW
5
ENE
15
E
15
E
10
E
15
SE
10
SSE
0
S
5
NNW
5
NE
15
ENE
15
E
10
E
10
ESE
10
SE
5
ESE
5
NNE
10
NE
20
ENE
20
NE
15
NE
15
NE
Wind State
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross
cross-off
glassy
glassy
on
cross-on
cross-on
cross-on
cross-on
cross
glassy
glassy
on
on
on
on
on
High Tide
4:22AM1.63m
5:02PM1.86m
5:18AM1.69m
5:54PM1.90m
6:10AM1.77m
6:40PM1.95m
Low Tide
10:54AM0.45m
11:48PM0.48m
11:48AM0.41m
00:34AM0.42m
12:39PM0.35m
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
thunderstorm
clear
clear
thunderstorm
thunderstorm
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
7:13
7:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:23
7:22
7:21
 mm
2
1
1
2
1
1
1
1
1
3
Temp °C
25
25
27
28
28
28
27
27
26
25
27
28
28
27
27
27
27
26
27
28
28
27
27
Feels °C
29
30
31
30
30
30
28
30
31
29
31
29
30
30
30
31
32
30
30
29
29
29
29
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

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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.


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