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Surf Forecasts:
The Boiler surfForecast / Cape Town / South Africa
12 Day Weather and Surf, issued 1 am Thursday 18 Sep 2025 SAST
Best Forecast Surf Conditions for The Boiler this week:
The surf forecast for The Boiler over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 8AM. The primary swell is predicted to be 1.8m and 11s period with a secondary swell of 1.1m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The Boiler in the next 12 days are 2.0m 14s and forecast to arrive on Wednesday (Sep 24) 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 1.8m 7s period and expected on Friday (Sep 19) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 18th Sep) | 6ft (1.8m) 11s |
| Best Surf | 8AM (Thu 18th Sep) | 6ft (1.8m) 11s |
| Most Powerful | 5AM (Wed 24th Sep) | 6.5ft (2.0m) 14s |
Table - best surf conditions forecast for The Boiler over the next 12 days.
Short Range Forecast Mostly dry. Warm (max 20°C on Fri night, min 13°C on Thu night). Winds increasing (calm on Thu morning, fresh winds from the SE by Thu night). | Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Tue afternoon. Very mild (max 16°C on Sun afternoon, min 13°C on Sun night). Winds increasing (calm on Sun morning, fresh winds from the SSW by Tue afternoon). | ||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 12 | 12 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 12 | 6 | 13 | 12 | 12 | 11 | 14 | 13 | 13 | 12 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 621 | 797 | 895 | 350 | 320 | 151 | 54 | 46 | 69 | 35 | 55 | 50 | 11 | 108 | 118 | 239 | 247 | 1426 | 1496 | 1452 | 1131 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | off | cross- off | cross- on | cross- on | on | cross- off | glass | cross- off | cross- on | cross- on | cross- off | cross- off | on | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 1:32PM 1.36 | 1:48AM 1.34 | 2:06PM 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 1.47 | 3:58PM 1.58 | 4:15AM 1.44 | 4:24PM 1.52 | 4:42AM 1.39 | |||||||
Low Tide / height (m) | 7:48PM 0.27 | 7:57AM 0.21 | 8:22PM 0.18 | 8:28AM 0.15 | 8:53PM 0.11 | 8:57AM 0.11 | 9:20PM 0.08 | 9:24AM 0.11 | 9:47PM 0.07 | 9:50AM 0.13 | 10:13PM 0.10 | 10:16AM 0.17 | 10:38PM 0.15 | ||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| Sunrise | 6:41 | - | - | 6:41 | - | - | 6:39 | - | - | 6:37 | - | - | 6:37 | - | - | 6:35 | - | - | 6:33 | - | - |
| Sunset | - | 6:38 | - | - | 6:39 | - | - | 6:40 | - | - | 6:40 | - | - | 6:42 | - | - | 6:43 | - | - | 6:44 | - |
 | |  | | | |  | | |  | |  | | | | |  |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | 2 | - | - | - | - | 5 | - | - | - | - |
| Temp. °C | 14 | 14 | 14 | 15 | 19 | 20 | 16 | 16 | 15 | 15 | 16 | 15 | 14 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 12 |
| Feels °C (?) | 13 | 11 | 9 | 12 | 15 | 17 | 13 | 13 | 14 | 15 | 14 | 15 | 12 | 14 | 12 | 11 | 6 | 6 | 5 | 7 | 5 |
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Cape Town
Still cross-shore at The Boiler (light winds from the SSW at Slangkop 1 km from The Boiler). 2.5m 12s groundswell from the SSW with a 0.8m 11s groundswell from the W. 2 swells combining so expect closeout sets.
1 h 15 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 The Boiler 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 The Boiler Surf forecast
The above surf forecast table for The Boiler provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at The Boiler can be found by selecting the local surf guide option on the grey menu. Our The Boiler 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 (The Boiler) 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 The Boiler 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 The Boiler, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 27 km (17 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Robben Island which is 38 km (24 miles) away, Bellville, Stellenbosch and Kayamnandi.
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