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Surf Forecasts:
J-Bay surfForecast / Eastern Cape (S) / South Africa
48hr Weather and Surf, issued 7 pm Wednesday 10 Dec 2025 SASTForecast update in hr min s Forecast update imminent
J-Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's J-Bay sea temperature is
19.8° C
(Which is 1.6°C colder than average for this time of year)How big are the waves at J-Bay today?
The current surf forecast for J-Bay at 10PM is: 1.9m 11s primary swell from a Southwest direction and 0.4m 13s secondary swell from a South direction, 1.5m 5s secondary swell from a East direction (forecast issued at 07:00pm December 10). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Dec) | - | - |
| Afternoon (10 Dec) | 7ft (2.2m) | 11s |
| Evening (10 Dec) | 6ft (1.9m) | 11s |
Table - waves today at J-Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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 | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 7 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 17 | 9 | 10 | 10 | 11 | 11 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 990 | 846 | 716 | 565 | 510 | 541 | 500 | 340 | 553 | 891 | 972 | 732 | 544 | 441 | 338 | 252 | 204 | 424 | 731 | 1639 | 2180 | 2919 | 3408 | 7607 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | cross- on | cross | cross- on | on | on | on | on | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 7:39PM 1.19 | 8:29AM 1.30 | 8:45PM 1.09 | 9:40AM 1.25 | 10:09PM 1.03 | 10:54AM 1.24 | ||||||||||||||||||
Low Tide / height (m) | 1:51AM 0.42 | 2:53PM 0.58 | 2:51AM 0.52 | 4:15PM 0.61 | 4:05AM 0.58 | |||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:01 | - | - | - | - | - | - | - | 5:01 | - | - | - | - | - | - | - | 5:01 | - | - |
| Sunset | 7:22 | - | - | - | - | - | - | - | 7:23 | - | - | - | - | - | - | - | 7:24 | - | - | - | - | - | - | - |
 |  | | | | | | | | |  |  | |  | | | | | | | |  |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - |
| Temp. °C | 19 | 17 | 17 | 16 | 14 | 20 | 27 | 28 | 29 | 25 | 23 | 23 | 22 | 21 | 25 | 23 | 21 | 20 | 19 | 18 | 17 | 18 | 20 | 20 |
| Feels °C (?) | 12 | 12 | 13 | 13 | 12 | 19 | 25 | 25 | 25 | 24 | 20 | 17 | 17 | 17 | 20 | 20 | 20 | 19 | 16 | 15 | 12 | 12 | 13 | 12 |
- 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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