Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Kosi Bay surfForecast / KZN North / South Africa

information circle12 Day Weather and Surf, issued 1 pm Thursday 15 Jan 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
27.2° 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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jan 15) at 11PM. The primary swell is predicted to be 1.4m and 9s period with a secondary swell of 0.1m and 10s. 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 4.0m 9s and forecast to arrive on Monday (Jan 19) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Jan 18) at 8AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Thu 15th Jan)4.5ft (1.4m) 9s
Best Surf11PM (Thu 15th Jan)4.5ft (1.4m) 9s
Most Powerful 8AM (Mon 19th Jan)13ft (4.0m) 9s

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 Moderate rain (total 19mm), heaviest on Sat morning. Warm (max 27°C on Sun morning, min 22°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 36mm), heaviest during Sun night. Warm (max 28°C on Sun afternoon, min 22°C on Tue night). Mainly strong winds.

Thu
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
0
1
0
0
0
2
2
2
1
0
0
0
0
0
0
0
0
0
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.2
E
1.4
E
1.4
E
1.3
E
1.2
E
1.3
E
1.4
E
1.3
E
1.3
E
1.3
E
3
S
3.5
S
3.5
S
2.5
SSE
2.4
SSE
2.3
SSE
2.2
SSE
1.7
SSE
1.2
SSE
1.2
ESE
0.7
E
Period(s) (?)999991010101010898877777813
Wave
Graph
(?)Metric surfscale
Energy kJ (?)225304334276235347400333338331136222141556871621588512278144179153
Wind
(km/h)
10
ENE
15
SSW
15
SSW
20
SSE
25
SSW
20
SSE
10
ESE
5
W
10
NNE
10
ESE
35
SSW
45
S
40
S
35
S
40
S
35
SSE
25
S
20
SSE
20
SSE
10
SE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		oncross-
off		cross-
off		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		ononcross-
on
High Tide
/ height (m)
2:16PM
1.60
2:41AM
1.61
2:55PM
1.74
3:16AM
1.75
3:28PM
1.87
3:48AM
1.89
3:59PM
1.98
4:18AM
2.01
4:28PM
2.07
4:48AM
2.10
4:57PM
2.12
5:17AM
2.15
5:26PM
2.12
5:48AM
2.17
Low Tide
/ height (m)
8:31PM
0.59
8:43AM
0.55
9:07PM
0.45
9:18AM
0.42
9:38PM
0.32
9:51AM
0.31
10:08PM
0.20
10:21AM
0.23
10:37PM
0.12
10:51AM
0.17
11:05PM
0.07
11:22AM
0.15
11:35PM
0.06
11:53AM
0.17
Thu
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Sunrise--5:07--5:09--5:09--5:11--5:11--5:11--5:13
Sunset6:46--6:45--6:45--6:45--6:45--6:45--6:45--
cloud
mod rain
light rain
rain showers
rain showers
light rain
rain showers
rain showers
clear
thunderstorm
heavy rain
mod rain
light rain
light rain
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
Rain (mm)
-6211441-420921-------
Temp. °C252524252524252427282423232425252425252424
Feels °C (?)282826262625282730312319192120201923242424
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Latest Updates

The World’s Most Inconsistent Waves
Ben Mondy

The World’s Most Inconsistent Waves

Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

Read more

Read more

Discover more articles and updates in the Greenroom.

submit an eyeball surf report

Quick surf report for Kosi Bay:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest