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Kosi Bay Surf Forecast
/ KZN North (23 surf breaks) /
Surf Forecasts:
Kosi Bay surfForecast / KZN North / South Africa
48hr Weather and Surf, issued 7 am Saturday 13 Sep 2025 SAST
How big are the waves at Kosi Bay today?
The current surf forecast for Kosi Bay at 9AM is: 0.9m 8s primary swell from a East direction and 0.6m 6s secondary swell from a South direction (forecast issued at 07:00am September 13). The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Sep) | 3ft (0.9m) | 8s |
| Afternoon (13 Sep) | 2.5ft (0.8m) | 8s |
| Evening (13 Sep) | 2.5ft (0.8m) | 8s |
Table - waves today at Kosi Bay. (Swell directed towards the surf break)
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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 | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 18 | 17 | 16 | 15 | 15 | 14 | 14 | 15 | 15 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 111 | 108 | 84 | 80 | 78 | 78 | 80 | 84 | 84 | 80 | 78 | 76 | 163 | 235 | 273 | 304 | 284 | 311 | 243 | 352 | 283 | 261 | 187 | 130 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross | cross | glass | cross- on | cross- on | cross- on | cross | cross- on | cross- on | cross- off | cross- on | cross- on | cross- on | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 6:37AM 1.87 | 7:00PM 1.80 | 7:17AM 1.64 | 7:47PM 1.52 | 8:22AM 1.39 | 9:45PM 1.29 | ||||||||||||||||||
Low Tide / height (m) | 12:48PM 0.35 | 1:12AM 0.53 | 1:32PM 0.62 | 2:06AM 0.78 | 2:56PM 0.87 | |||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | - | 5:48 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:46 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 5:39 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - | - | 5:40 | - | - | - |
 |  | | | |  | | |  |  |  | | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 19 | 24 | 26 | 23 | 22 | 21 | 21 | 21 | 23 | 24 | 24 | 22 | 22 | 21 | 21 | 20 | 21 | 24 | 25 | 23 | 22 | 23 | 23 |
| Feels °C (?) | 19 | 19 | 22 | 23 | 22 | 22 | 25 | 21 | 22 | 24 | 25 | 24 | 22 | 25 | 23 | 23 | 22 | 24 | 23 | 23 | 21 | 20 | 21 | 20 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for KZN North
Continuing clean conditions at Kosi Bay (light winds from the N at Maputo/Lourenço Marques Airport 111 km from Kosi Bay). 0.8m 7s swell from the S with a 0.7m 8s swell from the ESE and a 0.5m 12s groundswell from the S. 3 swells combining to make bigger set waves.
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