Dias Beach surfForecast / Garden Route / South Africa

information circle12 Day Weather and Surf, issued 7 pm Thursday 11 Dec 2025 SAST
Forecast update in hr  min  s Forecast update imminent
Dias Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dias Beach sea temperature is
21.8° C
(Which is 1.8°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Dias Beach this week:

The surf forecast for Dias Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 11) at 11PM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.8m and 9s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Dias Beach in the next 12 days are 4.5m 15s and forecast to arrive on Saturday (Dec 13) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Thursday (Dec 18) at 11AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Thu 11th Dec)2.5ft (0.8m) 9s
Best Surf 2AM (Sat 13th Dec)10ft (3.0m) 15s
Most Powerful 5AM (Sat 13th Dec)15ft (4.5m) 15s

Table - best surf conditions forecast for Dias Beach over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 6mm), mostly falling on Fri night. Warm (max 25°C on Fri morning, min 16°C on Fri night). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Warm (max 26°C on Wed morning, min 17°C on Sun night). Wind will be generally light.

Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thu
18
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
3
1
!
2
2
3
2
1
3
2
0
3
0
1
3
2
1
1
2
1
Swell
Height Map
Wave Height (m) & direction (?)
1
E
0.7
SSW
1.9
SW
3
SSW
2.5
SSW
2.2
SSW
1.7
SSW
1.5
SSW
1.4
SSW
1.7
SSW
1.8
SSW
1.8
SSW
1.5
SSW
1.2
SSW
0.9
SW
1.7
SSW
1.5
SSW
1.3
SSW
1.4
SSW
1.6
S
1.9
S
Period(s) (?)7189151413131212121312121212101212101212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)109292548359027361682980677548905996965626359202543636500370722986
Wind
(km/h)
15
W
5
SE
35
SW
30
W
25
WSW
20
S
5
N
10
SE
10
SE
5
NNE
15
SE
15
SE
5
NNE
10
SE
15
S
5
NW
15
SSW
20
S
15
S
15
SSW
25
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
glasscross-
off
cross-
off
cross-
off
crosscross-
off
cross-
on
cross-
on
glasscross-
on
onglasscross-
on
crossglasscrosscrosscrosscrosscross
High Tide
/ height (m)
8:54PM
1.42
9:46AM
1.61
10:16PM
1.37
11:01AM
1.62
11:35PM
1.39
12:05PM
1.65
12:38AM
1.45
12:55PM
1.71
1:26AM
1.54
1:36PM
1.77
2:06AM
1.62
2:12PM
1.82
2:41AM
1.69
2:44PM
1.86
Low Tide
/ height (m)
2:57AM
0.81
4:34PM
0.89
4:19AM
0.84
5:49PM
0.84
5:32AM
0.83
6:42PM
0.77
6:28AM
0.78
7:22PM
0.69
7:13AM
0.73
7:56PM
0.61
7:52AM
0.68
8:27PM
0.53
8:27AM
0.63
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thu
18
Sunrise-5:13--5:13--5:13--5:13--5:13--5:13--5:13-
Sunset--7:36--7:37--7:37--7:37--7:38--7:39--7:39
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
mod rain
heavy rain
rain showers
Rain (mm)
---6--------------8155
Temp. °C242525182020182120182222202424212622171617
Feels °C (?)232621161414151916172019192322222419151313
  • 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

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Information about the Dias Beach Surf forecast

The above surf forecast table for Dias Beach provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Dias Beach can be found by selecting the local surf guide option on the grey menu. Our Dias Beach 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 (Dias Beach) 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 Dias Beach 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.

Dias Beach is 6 km (4 miles) from the city of Mossel Bay. If you plan a holiday in Garden Route, look for hotels and other accommodation in Mossel Bay. Mossel Bay has rooms for a wide range of budgets as well as car hire and transport links.

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