Kosi Bay surfForecast / KZN North / South Africa

information circle16 Day Weather and Surf, issued 1 pm Friday 27 Mar 2026 SAST
Forecast 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
27.5° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Kosi Bay this week:

The surf forecast for Kosi Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Mar 28) at 2AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.4m and 13s. Another secondary swell of 0.6m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kosi Bay in the next 16 days are 1.5m 8s and forecast to arrive on Friday (Apr 03) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Mar 28) at 8PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sat 28th Mar)3.5ft (1.1m) 8s
Best Surf 2AM (Sat 28th Mar)3.5ft (1.1m) 8s
Most Powerful 5PM (Fri 3rd Apr)5ft (1.5m) 8s

Table - best surf conditions forecast for Kosi Bay over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 24mm), heaviest during Sat night. Warm (max 28°C on Fri afternoon, min 23°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Mon afternoon. Warm (max 27°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light.

Fri
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wednesday
01
Thursday
02
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
2
1
0
2
0
0
0
0
0
2
2
0
1
1
0
1
0
0
2
1
Swell
Height Map
Wave Height (m) & direction (?)
1.1
ESE
1.1
E
1.1
E
1
E
1.3
E
1.1
E
0.9
E
0.9
E
1.1
E
1
E
1
E
1
E
1
E
1.1
E
1.1
E
1.2
E
1.3
E
1.2
E
0.9
ESE
0.9
ESE
1.1
ESE
Period(s) (?)888889988898888888898
Wave
Graph
(?)Metric surfscale
Energy kJ (?)15514916513720318012211616913016014013617316918720717399121161
Wind
(km/h)
15
ENE
10
NNE
20
NNE
20
NE
5
WSW
20
S
20
S
20
SW
10
SSE
10
ESE
5
ENE
5
E
15
E
5
E
5
ESE
15
E
10
ESE
10
ESE
15
E
5
NNE
10
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
cross-
off
crosscross-
off
cross-
on
cross-
on
crosscross-
on
onglassglasscross-
on
cross-
on
oncross-
on
cross-
on
oncross-
on
cross-
off
cross
High Tide
/ height (m)
12:54AM
1.45
1:26PM
1.50
1:52AM
1.70
2:10PM
1.72
2:30AM
1.92
2:44PM
1.90
3:01AM
2.09
3:13PM
2.04
3:28AM
2.21
3:40PM
2.13
3:54AM
2.27
4:06PM
2.18
4:20AM
2.28
Low Tide
/ height (m)
6:13PM
0.87
7:14AM
0.77
7:32PM
0.64
8:04AM
0.55
8:13PM
0.43
8:38AM
0.36
8:46PM
0.25
9:08AM
0.20
9:15PM
0.11
9:36AM
0.10
9:43PM
0.03
10:02AM
0.04
10:09PM
0.00
10:27AM
0.02
Fri
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wednesday
01
Thursday
02
Sunrise--5:54--5:56--5:56--5:56--5:56--5:58--5:58
Sunset5:52--5:51--5:50--5:49--5:47--5:46--5:45--
clear
rain showers
clear
clear
thunderstorm
part cloud
clear
part cloud
thunderstorm
thunderstorm
clear
clear
clear
part cloud
part cloud
clear
rain showers
part cloud
clear
rain showers
clear
Rain (mm)
-1--22---11------2--1-
Temp. °C282628282626262526272627272627272526262525
Feels °C (?)312929292827262629302931292929282627272627
  • 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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Information about the Kosi Bay Surf forecast

The above surf forecast table for Kosi Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kosi Bay can be found by selecting the local surf guide option on the grey menu. Our Kosi Bay surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Kosi Bay) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Kosi Bay may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Kosi Bay is 108 km (67 miles) from the city of Maputo. If you plan a holiday in KwaZulu-Natal North Coast, look for hotels and other accommodation in Maputo. Maputo has rooms for a wide range of budgets as well as car hire and transport links.

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