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Underwater Point surfForecast / Cape Town / South Africa
12 Day Weather and Surf, issued 1 pm Wednesday 17 Sep 2025 SAST
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 Thursday (Sep 18) at 2PM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 1.1m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Underwater Point in the next 12 days are 3.5m 13s and forecast to arrive on Wednesday (Sep 24) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Wednesday (Sep 24) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Thu 18th Sep) | 5ft (1.6m) 11s |
| Best Surf | 2PM (Thu 18th Sep) | 5ft (1.6m) 11s |
| Most Powerful | 11AM (Wed 24th Sep) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Underwater Point over the next 12 days.
Short Range Forecast Mostly dry. Very mild (max 18°C on Fri night, min 13°C on Wed afternoon). Winds increasing (light winds from the SSW on Wed night, fresh winds from the SE by Thu night). | Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Mon morning. Very mild (max 16°C on Sat afternoon, min 14°C on Sun morning). Winds increasing (calm on Sat night, strong winds from the SE by Sun night). | ||||||||||||||||||||||
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 11 | 12 | 12 | 10 | 10 | 9 | 9 | 8 | 13 | 12 | 12 | 11 | 13 | 12 | 12 | 11 | 8 | 13 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 2391 | 1643 | 621 | 797 | 895 | 446 | 320 | 151 | 54 | 52 | 69 | 25 | 23 | 50 | 44 | 108 | 118 | 199 | 247 | 1108 | 3688 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross | cross- off | cross- off | off | cross- off | off | cross- on | on | glass | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | ||
High Tide / height (m) | 1:08AM 1.25 | 1:32PM 1.36 | 1:48AM 1.34 | 2:07PM 1.47 | 2:22AM 1.41 | 2:37PM 1.55 | 2:52AM 1.46 | 3:05PM 1.59 | 3:21AM 1.48 | 3:32PM 1.60 | 3:48AM 1.48 | 3:58PM 1.58 | 4:15AM 1.45 | ||||||||||
Low Tide / height (m) | 7:06PM 0.39 | 7:21AM 0.30 | 7:48PM 0.27 | 7:58AM 0.21 | 8:23PM 0.18 | 8:29AM 0.15 | 8:53PM 0.11 | 8:57AM 0.11 | 9:21PM 0.08 | 9:24AM 0.10 | 9:47PM 0.07 | 9:50AM 0.12 | 10:13PM 0.10 | 10:16AM 0.17 | |||||||||
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||
| Sunrise | - | - | 6:41 | - | - | 6:39 | - | - | 6:39 | - | - | 6:37 | - | - | 6:35 | - | - | 6:35 | - | - | 6:33 | ||
| Sunset | 6:37 | - | - | 6:38 | - | - | 6:38 | - | - | 6:39 | - | - | 6:40 | - | - | 6:42 | - | - | 6:42 | - | - | ||
 |  | | | | | |  |  | |  |  | |  |  | | | | | | | |||
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | 4 | 6 | - | - | - | - | - | - | ||
| Temp. °C | 14 | 14 | 14 | 14 | 14 | 14 | 17 | 18 | 16 | 16 | 16 | 15 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | ||
| Feels °C (?) | 10 | 10 | 11 | 11 | 8 | 9 | 12 | 13 | 11 | 12 | 14 | 11 | 10 | 6 | 11 | 11 | 11 | 10 | 9 | 7 | 6 | ||
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Recent Eyeball Surf Reports for Cape Town
The wind is still cross-on at Underwater Point (light winds from the SW at Cape Point (68916 -0) 3 km from Underwater Point). 2.9m 12s groundswell from the SSW with a 1.3m 11s groundswell from the W. 2 swells combining so expect closeout sets.
1 h 29 min ago
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 Underwater Point 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.
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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