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Surf Forecasts:

Kosi Bay surfForecast / KZN North / South Africa

information circle12 Day Weather and Surf, issued 1 pm Wednesday 19 Nov 2025 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
23.9° C
 (Which is slightly cooler than normal)

Best Forecast Surf Conditions for Kosi Bay this week:

The surf forecast for Kosi Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Nov 20) at 5AM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Kosi Bay in the next 12 days are 1.3m 15s and forecast to arrive on Saturday (Nov 22) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Sunday (Nov 23) at 2PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 20th Nov)3ft (0.9m) 6s
Best Surf 5AM (Sat 22nd Nov)3.5ft (1.1m) 14s
Most Powerful 2PM (Sat 22nd Nov)4.5ft (1.3m) 15s

Table - best surf conditions forecast for Kosi Bay over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 23°C on Wed afternoon, min 20°C on Fri morning). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 42mm), heaviest during Mon night. Warm (max 27°C on Mon afternoon, min 21°C on Mon night). Mainly fresh winds.

Wed
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
1
2
1
2
3
0
3
2
0
2
1
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1
E
1
E
0.5
S
0.8
E
0.8
E
0.6
SSW
0.9
SSW
1.1
S
1.2
S
1.3
S
1.3
S
1.4
S
1.2
S
1
S
1.6
NE
0.9
S
0.9
S
2.1
S
2.2
S
1.1
S
0.9
SSE
Period(s) (?)77968201715141413121212711117779
Wave
Graph
(?)Metric surfscale
Energy kJ (?)10086395171304470537590682599594416268213192182413479107132
Wind
(km/h)
20
ESE
5
ESE
15
ENE
15
ENE
5
S
0
NW
15
ENE
5
SE
10
NNE
20
ENE
10
NNE
25
NNE
25
NE
15
NNE
20
N
20
SSE
30
SSW
25
S
20
SSE
5
S
10
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
ononcrosscross-
on		glassglasscross-
on		oncross-
off		cross-
on		cross-
off		cross-
off		crosscross-
off		cross-
off		cross-
on		crosscross-
on		oncross-
on		cross
High Tide
/ height (m)
3:11PM
2.04
3:27AM
1.98
3:39PM
2.05
3:55AM
1.99
4:07PM
2.04
4:23AM
1.97
4:35PM
2.00
4:53AM
1.92
5:05PM
1.93
5:25AM
1.85
5:37PM
1.85
6:00AM
1.77
6:13PM
1.74
6:42AM
1.67
Low Tide
/ height (m)
9:20PM
0.20
9:30AM
0.22
9:48PM
0.18
9:58AM
0.21
10:16PM
0.19
10:28AM
0.24
10:45PM
0.23
10:58AM
0.30
11:16PM
0.30
11:29AM
0.39
11:50PM
0.38
12:05PM
0.51
12:28AM
0.49
12:49PM
0.63
Wed
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Sunrise--4:48--4:48--4:47--4:47--4:47--4:47--4:46
Sunset6:17--6:19--6:20--6:21--6:22--6:22--6:22--
clear
part cloud
part cloud
clear
part cloud
cloud
clear
part cloud
cloud
clear
rain showers
part cloud
clear
thunderstorm
cloud
rain showers
thunderstorm
rain showers
clear
clear
clear
Rain (mm)
----------1--7-14182---
Temp. °C232222232221232223242326262326272222242225
Feels °C (?)222122222123232223232225242526272220222126
  • 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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Latest Updates

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Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.

Feel that? If you are in the northern hemisphere, you will have had that first bite of winter. The lick of a frost, the chill of a cold offshore breeze and the sound of winter swells pounding the shores. If you are near the mountains, your favourite jackets, gloves, and footwear might get dusted off and prepped for battle. And in that beautiful Venn diagram, you will find PrimaLoft. They have spent over 40 years developing innovative insulations that have powered your warmest winter gear. In t

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kosi Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Kosi Bay at:
surf-forecast.com

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 12 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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