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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 pm Sunday 17 May 2026 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
25.5° C
(Which is 1.0°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 12AM is: 0.9m 12s primary swell from a South direction and 0.9m 7s secondary swell from a East direction (forecast issued at 07:00pm May 17). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 3.5ft (1.0m) | 13s |
| Afternoon (18 May) | 3.5ft (1.0m) | 14s |
| Evening (18 May) | 3ft (0.9m) | 12s |
Table - waves today at Kosi Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Warm (max 23°C on Sun night, min 20°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 12 | S 12 | S 12 | S 10 | S 12 | S 13 | S 13 | S 14 | S 12 | S 12 | S 12 | S 13 | S 12 | S 12 | S 12 | S 12 | E 8 | E 9 | E 8 | E 8 | E 8 | SSE 13 | E 8 | ESE 8 | |
290 | 232 | 232 | 94 | 148 | 352 | 352 | 379 | 190 | 190 | 244 | 260 | 130 | 181 | 134 | 132 | 93 | 159 | 165 | 165 | 161 | 181 | 149 | 127 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross | off | cross-off | glassy | cross | cross | cross | cross | cross-off | cross-off | glassy | glassy | glassy | cross-on | cross-on | cross-on | on | cross | cross | cross | cross-on | on | |
High Tide | 4:01PM2.15m | 4:21AM2.22m | 4:41PM2.13m | 5:02AM2.13m | 5:24PM2.06m | 5:44AM1.99m | ||||||||||||||||||
Low Tide | 10:07PM0.02m | 10:32AM0.05m | 10:49PM0.08m | 11:12AM0.12m | 11:33PM0.20m | 11:55AM0.24m | ||||||||||||||||||
 |  | | | | | | | | | | |  |  |  | | |  | | | | | | | |
 | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — |
 | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | 5:06 |
— | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 23 | 22 | 21 | 20 | 20 | 22 | 23 | 23 | 23 | 22 | 21 | 20 | 20 | 23 | 23 | 22 | 22 | 22 | 21 | 20 | 20 | 23 | 23 |
22 | 23 | 22 | 22 | 21 | 22 | 23 | 22 | 22 | 23 | 22 | 22 | 21 | 21 | 24 | 22 | 21 | 20 | 22 | 20 | 19 | 18 | 21 | 20 | |
Swell 1 Height (m) Direction Period (s) | S 12 | E 7 | E 7 | E 7 | E 7 | S 13 | S 13 | S 14 | E 7 | E 7 | E 8 | E 8 | E 7 | E 7 | E 7 | E 8 | E 8 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 |
 kJ | 290 | 74 | 77 | 77 | 77 | 352 | 352 | 379 | 97 | 104 | 133 | 133 | 130 | 106 | 103 | 90 | 90 | 159 | 165 | 165 | 161 | 153 | 149 | 127 |
Swell 2 Height (m) Direction Period (s) | E 7 | S 12 | S 12 | S 10 | S 12 | E 7 | E 7 | E 7 | S 12 | S 12 | S 12 | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 |
| kJ | 70 | 232 | 232 | 94 | 148 | 76 | 78 | 97 | 190 | 190 | 244 | 260 | 129 | 181 | 134 | 132 | 93 | 85 | 84 | 105 | 141 | 181 | 131 | 127 |
Swell 3 Height (m) Direction Period (s) | — | S 15 | S 15 | S 12 | S 10 | — | — | S 15 | S 15 | S 15 | SSE 15 | — | S 13 | SSE 16 | SSE 16 | SSE 15 | ESE 8 | SE 8 | SSE 14 | S 11 | S 11 | SSW 13 | S 10 | ESE 10 |
| kJ | — | 39 | 39 | 76 | 66 | — | — | 113 | 112 | 110 | 72 | — | 90 | 25 | 49 | 77 | 28 | 33 | 115 | 57 | 55 | 17 | 31 | 35 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 3 | SSW 2 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 380 | 258 | 25 | 0 | 0 | 0 | 3 | 380 | 380 | 258 | 0 | 0 | 0 | 0 | 0 | 380 | 380 | 258 | 25 | 144 | 144 | 144 | 228 | 380 |
Best forecast wave conditions in KwaZulu-Natal North Coast | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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