Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Kosi Bay surfForecast / KZN North / South Africa
48hr Weather and Surf, issued 7 pm Wednesday 17 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
26.1° C
(Which is slightly warmer than usual)How big are the waves at Kosi Bay today?
The current surf forecast for Kosi Bay at 12AM is: 1.1m 9s primary swell from a East direction and 1.5m 5s secondary swell from a South direction (forecast issued at 07:00pm December 17). An open ocean swell of 0.4m 5s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Dec) | - | - |
| Afternoon (18 Dec) | 3ft (0.9m) | 8s |
| Evening (18 Dec) | 4.5ft (1.4m) | 8s |
Table - waves today at Kosi Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 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) (?) | 6 | 8 | 9 | 6 | 7 | 7 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 8 | 12 | 12 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 166 | 256 | 181 | 236 | 319 | 258 | 230 | 298 | 428 | 434 | 428 | 245 | 251 | 251 | 257 | 245 | 280 | 286 | 284 | 290 | 239 | 336 | 330 | 250 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross | glass | glass | glass | cross- on | cross- on |
High Tide / height (m) | 2:22PM 1.79 | 2:43AM 1.75 | 2:57PM 1.86 | 3:17AM 1.83 | 3:30PM 1.92 | 3:49AM 1.89 | ||||||||||||||||||
Low Tide / height (m) | 8:35PM 0.44 | 8:46AM 0.43 | 9:08PM 0.35 | 9:20AM 0.35 | 9:41PM 0.28 | 9:53AM 0.30 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:50 | - | - | - | - | - | - | - | 4:50 | - | - | - |
| Sunset | 6:38 | - | - | - | - | - | - | - | 6:38 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - |
 |  | |  |  |  | | | |  |  |  |  | | | | | | | | | | | | |
Rain (mm) | - | 1 | 3 | 7 | 4 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 29 | 24 | 23 | 22 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 22 | 24 | 26 | 26 |
| Feels °C (?) | 29 | 23 | 21 | 20 | 21 | 24 | 23 | 22 | 21 | 21 | 21 | 21 | 22 | 22 | 24 | 24 | 24 | 25 | 26 | 27 | 25 | 27 | 28 | 26 |
- 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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