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Surf Forecasts:
Underwater Point surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 pm Saturday 18 Apr 2026 SASTForecast 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
19.2° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Underwater Point today?
The current surf forecast for Underwater Point at 5PM is: 2.3m 13s primary swell from a Southwest direction and 1.2m 10s secondary swell from a South direction, 1.8m 6s secondary swell from a Northwest direction (forecast issued at 01:00pm April 18). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | 11ft (3.5m) | 12s |
| Afternoon (18 Apr) | 10ft (3.0m) | 12s |
| Evening (18 Apr) | 6ft (1.9m) | 13s |
Table - waves today at Underwater Point. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||||||||
| 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 | 2 AM | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 13 | 13 | 9 | 9 | 8 | 9 | 10 | 9 | 10 | 10 | 11 | 12 | 12 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3079 | 2553 | 1671 | 1703 | 1090 | 859 | 681 | 884 | 1378 | 3398 | 3917 | 3998 | 4968 | 5070 | 4992 | 7995 | 7687 | 7244 | 6440 | 5612 | 4961 | 4445 | 4041 | 3619 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 3:56PM 1.57 | 4:08AM 1.69 | 4:36PM 1.53 | 4:50AM 1.60 | 5:20PM 1.44 | 5:36AM 1.46 | ||||||||||||||||||
Low Tide / height (m) | 9:48AM -0.08 | 9:57PM 0.05 | 10:27AM -0.03 | 10:39PM 0.11 | 11:09AM 0.06 | 11:24PM 0.21 | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:13 |
| Sunset | - | - | 6:19 | - | - | - | - | - | - | - | 6:17 | - | - | - | - | - | - | - | 6:16 | - | - | - | - | - |
 | |  |  |  | | | | | | |  | | | | |  | |  | | |  | | | |
Rain (mm) | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 5 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | - | 1 | 1 | - | 1 | 1 |
| Temp. °C | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 16 | 16 | 15 | 14 | 14 | 14 | 15 | 16 | 16 | 17 | 16 | 17 | 16 | 17 | 16 |
| Feels °C (?) | 9 | 7 | 7 | 8 | 9 | 10 | 8 | 6 | 6 | 5 | 4 | 3 | 2 | 4 | 5 | 7 | 9 | 8 | 9 | 9 | 10 | 10 | 11 | 11 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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