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Surf Forecasts:
Kosi Bay surfForecast / KZN North / South Africa
48hr Weather and Surf, issued 1 am Friday 12 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Kosi Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kosi Bay sea temperature is
26.4° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Kosi Bay today?
The current surf forecast for Kosi Bay at 7AM is: 1.0m 15s primary swell from a South direction and 1.0m 14s secondary swell from a South direction, 1.5m 7s secondary swell from a East-northeast direction (forecast issued at 01:00am December 12). The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 3.5ft (1.0m) | 15s |
| Afternoon (12 Dec) | 3ft (0.9m) | 15s |
| Evening (12 Dec) | 7ft (2.1m) | 7s |
Table - waves today at Kosi Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| 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 | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 15 | 15 | 15 | 6 | 7 | 7 | 7 | 8 | 7 | 7 | 7 | 7 | 8 | 6 | 8 | 10 | 9 | 7 | 7 | 7 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 338 | 416 | 416 | 422 | 418 | 339 | 277 | 362 | 424 | 242 | 308 | 550 | 516 | 405 | 280 | 196 | 138 | 146 | 307 | 280 | 302 | 286 | 232 | 178 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross | cross- on | cross- on | cross- on | on | cross- on | cross- on |
High Tide / height (m) | 8:21PM 1.51 | 9:17AM 1.57 | 9:40PM 1.41 | 10:40AM 1.53 | 11:13PM 1.40 | 11:58AM 1.55 | ||||||||||||||||||
Low Tide / height (m) | 2:39AM 0.66 | 3:36PM 0.82 | 3:57AM 0.75 | 5:06PM 0.82 | 5:22AM 0.76 | 6:22PM 0.75 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| Sunrise | - | - | 4:47 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:36 | - | - | - | - | - | - | - | 6:36 | - | - | - | - | - | - | - | 6:37 | - |
 |  |  | | | | | | | | | | | |  |  | |  | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 9 | - | 1 | 3 | 5 | 6 | 6 | 1 | - |
| Temp. °C | 23 | 23 | 22 | 24 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 25 | 28 | 29 | 25 | 22 | 23 | 22 | 23 | 22 | 22 | 23 | 23 | 23 |
| Feels °C (?) | 24 | 23 | 22 | 22 | 23 | 23 | 23 | 21 | 22 | 22 | 22 | 23 | 26 | 28 | 26 | 22 | 24 | 22 | 24 | 22 | 22 | 24 | 25 | 26 |
- Map Icons:
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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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