Nine Mile Reef Surf Break

Lat Long: 34.07° S 18.66° E

Nine Mile Reef 48 hour detailed Surf Forecast

Issued: 7 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nine Mile Reef sea temperature is
14.0° C
1.7° 

Nine Mile Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Nine Mile Reef today (21 Aug):

  • Morning surf: Morning surf (21 Aug, local time) - 5ft (1.5m), 11s period with SSW swell.
  • Afternoon surf: Afternoon surf (21 Aug, local time) - 5ft (1.5m), 11s period with SSW swell.
  • Evening surf: Evening surf (21 Aug, local time) - 4ft (1.2m), 11s period with SSW swell.

The current surf forecast for Nine Mile Reef at 1PM is: 1.4m 11s primary swell from a South-southwest direction and 1.3m 11s secondary swell from a South-southwest direction, 0.9m 4s secondary swell from a Southeast direction (forecast issued at 07:00am August 21). The wind direction is predicted to be onshore.

Time (SAST) & DateWave HeightWave Period
Morning (21 Aug)5ft (1.5m)11s
Afternoon (21 Aug)5ft (1.5m)11s
Evening (21 Aug)4ft (1.2m)11s

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


Short Range Forecast

Mostly dry. Very mild (max 18°C on Fri afternoon, min 11°C on Fri morning). Wind will be generally light.

Friday
21
Saturday
22
Sunday
23
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
5 PM
8 PM
11 PM
Rating
(10 max)
2
2
2
1
1
2
2
3
3
3
2
1
2
3
3
3
2
2
1
0
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SSW
12
1.5
SSW
11
1.4
SSW
11
1.5
SSW
11
1.2
SSW
11
1.2
SSW
11
1.4
SSW
11
1.2
SSW
11
1.1
SSW
10
1.3
SSW
11
1.1
SSW
11
1
SSW
11
1.2
SSW
12
1.4
SW
11
1.6
SW
11
1.5
SW
12
1.4
SW
12
1.3
SW
11
1.4
SW
13
1.4
SW
13
1.4
SW
13
1.3
SW
12
1.3
SW
12
Wave Graph
Metric surfscale
Energy kJ
658
556
495
524
317
311
444
322
270
346
291
256
371
512
582
594
542
403
633
639
629
471
448
Wind (km/h)
10
SE
10
ESE
10
SSE
10
SSW
10
S
0
NW
5
SW
5
SW
5
NW
10
N
15
NNW
15
NW
10
NW
5
NW
5
NE
5
SSE
10
SSE
10
SE
10
S
15
S
15
S
10
S
15
S
Wind State
cross-on
cross-on
on
on
on
glassy
cross-on
glassy
cross-off
off
off
cross-off
cross-off
glassy
glassy
cross-on
on
cross-on
on
on
on
on
on
High Tide
9:44AM0.92m
10:23PM0.99m
11:56AM0.97m
00:07AM1.04m
1:00PM1.07m
Low Tide
3:15AM0.64m
3:47PM0.72m
5:33AM0.63m
6:08PM0.67m
6:47AM0.53m
7:08PM0.57m
clear
clear
clear
clear
clear
clear
part cloud
clear
cloud
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:16
7:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:19
6:20
 mm
Temp °C
12
11
15
18
17
16
14
13
13
12
15
18
16
15
15
14
13
13
14
15
14
13
13
Feels °C
10
9
13
16
15
16
14
13
13
10
12
15
14
15
16
14
12
12
12
12
11
11
11
  • 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
How to use the Wavefinder 

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