Nine Mile Reef surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 1 pm Monday 11 May 2026 SAST
Forecast update in hr  min  s Forecast update imminent
Nine Mile Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nine Mile Reef sea temperature is
17.2° C
(Which is normal for this time of year)

How big are the waves at Nine Mile Reef today?

The current surf forecast for Nine Mile Reef at 9PM is: 3.0m 13s primary swell from a Southwest direction and 0.2m 10s secondary swell from a East-southeast direction (forecast issued at 01:00pm May 11). An open ocean swell of 1.6m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 11.

Time (SAST) & DateWave HeightWave Period
Morning (11 May)7.5ft (2.3m)11s
Afternoon (11 May)15ft (4.5m)13s
Evening (11 May)10ft (3.0m)13s

Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 32mm), heaviest during Mon night. Very mild (max 18°C on Mon afternoon, min 13°C on Wed night). Winds decreasing (near gales from the WNW on Mon afternoon, calm by Thu morning).

Mon
11
Tuesday
12
Wednesday
13
Thu
14
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
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
Rating
(10 max)
0
0
0
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Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.4
SSE
9
4.5
WSW
13
3.5
SW
14
3
SW
13
3
SW
13
3
SW
13
3
SW
13
3
SW
13
3
SW
13
2.5
SW
12
2.4
SW
12
2.5
SW
12
2.4
SW
12
2.5
SW
12
2.5
SW
12
2.5
SW
12
3
SSW
12
3
SSW
12
3
SSW
12
2.5
SSW
12
2.5
SSW
12
2.4
SSW
12
2.2
SSW
11
2.1
SSW
11
Wave Graph
Metric surfscale
Energy kJ
28
6425
4007
3357
2873
2699
3113
2982
2522
2135
1768
1801
1665
1805
1913
1969
2216
2393
2208
1968
1717
1491
1183
1027
Wind (km/h)
60
NW
55
WNW
50
WNW
40
WNW
35
WNW
40
NW
30
W
15
NNW
20
NNW
35
NW
20
WNW
15
NW
15
WNW
15
W
15
W
15
WSW
15
WSW
10
WSW
10
SW
10
SSW
5
SSW
5
SSE
5
E
0
ESE
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
glassy
glassy
glassy
High Tide
10:55AM1.08m
11:22PM1.28m
11:55AM1.19m
00:11AM1.40m
12:45PM1.30m
00:56AM1.52m
Low Tide
4:58PM0.49m
5:52AM0.40m
5:54PM0.40m
6:39AM0.25m
6:43PM0.31m
7:22AM0.12m
heavy rain
light rain
light rain
light rain
light rain
light rain
mod rain
light rain
light rain
light rain
rain showers
part cloud
rain showers
rain showers
part cloud
cloud
part cloud
cloud
part cloud
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:28
7:28
7:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:54
5:53
5:53
5:52
11
5
4
2
2
1
8
1
3
2
2
1
1
Temp °C
17
18
18
17
17
17
16
15
16
18
17
16
15
15
15
15
15
16
15
15
14
13
13
13
8
10
10
11
12
11
12
13
14
13
14
15
13
12
12
12
12
13
13
13
13
12
12
12
Swell 1
Height (m)
Direction
Period (s)
0.2
SSE
13
0.3
SSE
10
3.5
SW
14
3
SW
13
3
SW
13
3
SW
13
3
SW
13
3
SW
13
3
SW
13
2.5
SW
12
2.4
SW
12
2.5
SW
12
2.4
SW
12
2.5
SW
12
2.5
SW
12
2.5
SW
12
3
SSW
12
3
SSW
12
3
SSW
12
2.5
SSW
12
2.5
SSW
12
2.4
SSW
12
2.2
SSW
11
2.1
SSW
11
Energy kJ
17
18
4007
3357
2873
2699
3113
2982
2522
2135
1768
1801
1665
1805
1913
1969
2216
2393
2208
1968
1717
1491
1183
1027
Swell 2
Height (m)
Direction
Period (s)
0.4
SSE
9
0.3
SE
10
0.3
SE
10
0.2
ESE
10
0.1
SE
12
0.1
SE
11
2.5
W
11
2.4
WSW
11
2.2
WSW
12
1.9
WSW
11
2.1
WSW
11
1.9
WSW
11
0.1
SW
20
0.1
SW
19
Energy kJ
28
16
16
10
6
5
1633
1412
1272
927
1072
828
15
15
Swell 3
Height (m)
Direction
Period (s)
0.1
W
20
0.1
SW
19
0.1
SW
19
Energy kJ
8
15
15
Wind waves
Height (m)
Direction
Period (s)
4
W
13
4.5
WSW
13
2.2
W
7
1.6
WNW
6
1.4
WNW
5
1.2
WNW
5
3.5
W
12
3.5
W
12
0.6
NW
3
3
W
12
0.8
W
4
3
W
12
3
W
12
2.5
W
12
3
W
12
2.5
W
11
Energy kJ
5607
6425
440
192
106
66
3637
3321
6
2587
21
2468
2344
1990
2204
1898
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
7
2
9
8
4
4
5
4
4
4
4
4
4
4
4
4
5
4
4
4
4
Distance (km)
868
976
994
578
1042
398
320
18
18
300
10
10
10
10
165
165
18
18
18
20
16
12
10
10
Best forecast wave conditions in Cape Town
Rating
(10 max)
5
4
4
4
4
4
4
5
5
5
5
4
4
4
Best forecast wave conditions in South Africa
Rating
(10 max)
4
3
3
9
2
9
9
5
6
5
5
9
5
6
4
7
4
5
5
9
9
5
9
4
Header Global
Rating
(10 max)
5
4
5
9
5
5
9
5
9
9
8
9
9
8
6
8
7
6
6
9
9
5
9
5
  • 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

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