Glenelg Rivermouth Surf Break

Lat Long: 38.06° S 140.99° E

Glenelg Rivermouth 48 hour detailed Surf Forecast

Issued: 8 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Glenelg Rivermouth sea temperature is
14.5° C
0.9° 

Glenelg 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 Glenelg Rivermouth today (18 Aug):

  • Morning surf: Morning surf (18 Aug, local time) - 5.5ft (1.7m), 14s period with SW swell.
  • Afternoon surf: Afternoon surf (18 Aug, local time) - 5ft (1.5m), 16s period with SW swell.
  • Evening surf: Evening surf (18 Aug, local time) - 5ft (1.6m), 16s period with SW swell.

The current surf forecast for Glenelg Rivermouth at 5PM is: 1.6m 16s primary swell from a Southwest direction and 0.4m 6s secondary swell from a Southeast direction (forecast issued at 08:30am August 18). An open ocean swell of 0.7m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 4.

Time (ACST) & DateWave HeightWave Period
Morning (18 Aug)5.5ft (1.7m)14s
Afternoon (18 Aug)5ft (1.5m)16s
Evening (18 Aug)5ft (1.6m)16s

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


Short Range Forecast

Moderate rain (total 11mm), heaviest on Wed morning. Very mild (max 15°C on Tue afternoon, min 11°C on Wed night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
4
4
4
4
4
4
3
3
1
2
1
1
2
3
2
4
!
3
!
4
!
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
SW
14
1.7
SW
14
1.6
SW
16
1.5
SW
16
1.7
SW
16
1.6
SW
16
1.4
SW
15
1.3
SW
15
1.3
SW
15
1.3
SW
16
1.3
SW
15
1.3
SW
15
1.3
SW
15
2.4
W
8
2.4
W
9
2.2
W
9
3
W
13
2.5
WSW
12
3
W
12
2.5
W
12
3
W
13
1.6
SW
16
Wave Graph
Metric surfscale
Energy kJ
1712
1115
1314
1082
1392
1140
859
757
788
773
743
695
685
809
916
821
2787
2181
2629
1946
2775
1314
Wind (km/h)
20
NE
25
NNE
25
NNE
25
NNE
25
NNE
25
NNE
25
NNE
25
NNE
25
N
25
NNW
25
NW
30
NW
25
WNW
20
NW
15
WNW
15
NW
15
NW
15
NW
25
NW
10
W
10
WNW
10
WNW
Wind State
off
off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
High Tide
1:51PM0.74m
3:09AM0.78m
1:56PM0.71m
3:48AM0.74m
1:54PM0.69m
Low Tide
8:17AM0.32m
8:24PM0.06m
8:42AM0.41m
8:44PM0.05m
9:02AM0.49m
9:04PM0.07m
part cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
rain showers
light rain
thunderstorm
rain showers
rain showers
clear
part cloud
cloud
cloud
part cloud
part cloud
rain showers
light rain
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:47
6:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:31
5:31
5:32
 mm
1
2
3
1
1
1
2
Temp °C
11
13
14
15
13
13
13
13
13
13
14
14
13
12
12
11
11
13
13
11
12
12
Feels °C
7
8
9
11
8
9
9
9
9
9
9
9
8
8
8
8
8
10
8
9
10
9
  • 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 

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 Glenelg 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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