Underwater Point surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 7 am Thursday 11 Dec 2025 SAST
Forecast update in hr  min  s Forecast update imminent
Underwater Point surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Underwater Point sea temperature is
19.1° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Underwater Point this week:

The surf forecast for Underwater Point over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Dec 12) at 11PM. The primary swell is predicted to be 4.5m and 15s period with a secondary swell of 4.0m and 15s. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Underwater Point in the next 12 days are 4.5m 15s and forecast to arrive on Friday (Dec 12) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 9s period and expected on Thursday (Dec 18) at 5AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Fri 12th Dec)15ft (4.5m) 15s
Best Surf11PM (Fri 12th Dec)15ft (4.5m) 15s
Most Powerful11PM (Fri 12th Dec)15ft (4.5m) 15s

Table - best surf conditions forecast for Underwater Point over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 7mm), mostly falling on Fri afternoon. Warm (max 20°C on Thu afternoon, min 16°C on Fri night). Winds increasing (light winds from the ESE on Thu morning, strong winds from the NW by Fri morning).

Days 3-6 Weather Summary Some drizzle, heaviest during Tue night. Warm (max 21°C on Mon night, min 16°C on Sun morning). Winds increasing (calm on Mon morning, fresh winds from the W by Tue afternoon).

Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
0
0
0
0
3
0
4
3
1
3
3
2
3
2
0
1
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
1.2
SW
1.2
SW
0.7
SW
1.6
SW
1.9
SW
4.5
SW
4
SW
3.5
SW
3
SW
2.5
SW
2.5
SW
2.5
SW
3
SW
3
SW
2.5
SW
2.4
WSW
2.3
WSW
2.3
WSW
2.5
WSW
2.2
WSW
1.7
WSW
Period(s) (?)9919171614131312121211121212121210131312
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2582473761453187877295175421827111870159016652375249520111580150299825491624876
Wind
(km/h)
10
SW
20
SW
25
NW
45
NW
40
W
35
WSW
15
WSW
20
SW
10
SSE
15
S
15
SSW
5
S
10
SSW
20
SSW
20
SSE
15
W
30
WNW
30
N
20
SW
25
SSW
40
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
cross-
off
crosscross-
on
crosscross-
on
crosscross-
off
ononcrosscross-
on
cross-
on
cross-
off
High Tide
/ height (m)
8:15AM
1.26
8:45PM
1.04
9:21AM
1.21
10:04PM
1.01
10:28AM
1.20
11:17PM
1.03
11:28AM
1.20
12:15AM
1.08
12:18PM
1.23
1:01AM
1.15
1:02PM
1.27
1:40AM
1.21
1:41PM
1.31
2:15AM
1.27
Low Tide
/ height (m)
2:49PM
0.48
2:47AM
0.50
4:05PM
0.50
4:00AM
0.55
5:14PM
0.48
5:11AM
0.56
6:10PM
0.43
6:11AM
0.53
6:54PM
0.37
6:59AM
0.48
7:32PM
0.32
7:40AM
0.43
8:07PM
0.27
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Sunrise5:26--5:26--5:26--5:26--5:28--5:28--5:28--
Sunset-7:51--7:51--7:52--7:52--7:53--7:53--7:54-
clear
part cloud
part cloud
rain showers
rain showers
rain showers
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
rain showers
light rain
rain showers
Rain (mm)
---142-----------1342
Temp. °C192020191918171717171820202021212120191818
Feels °C (?)181820121411131313151620201921201718171312
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Underwater Point Surf forecast

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

Are you planning a holiday in Cape Town? If you are looking for accommodation near Underwater Point, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 46 km (29 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Bellville which is 51 km (32 miles) away, Grabouw, Stellenbosch and Kayamnandi.

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