Surf Forecasts:
How big are the waves at Nine Mile Reef today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 5ft (1.5m), 13s period with SW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 5.5ft (1.7m), 13s period with SW swell.
- Evening surf: Evening surf (18 Aug, local time) - 6.5ft (2.0m), 13s period with SSW swell.
The current surf forecast for Nine Mile Reef at 10AM is: 1.8m 12s primary swell from a Southwest direction and 1.5m 12s secondary swell from a Southwest direction (forecast issued at 01:00am August 18). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 5ft (1.5m) | 13s |
| Afternoon (18 Aug) | 5.5ft (1.7m) | 13s |
| Evening (18 Aug) | 6.5ft (2.0m) | 13s |
Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 15°C on Tue morning, min 12°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||||||
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 | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SW 13 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 12 | SSW 12 | SW 12 | SW 12 | SSW 12 | SSW 13 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 628 | 673 | 699 | 1025 | 878 | 1249 | 1250 | 1155 | 1043 | 964 | 864 | 808 | 795 | 718 | 718 | 691 | 968 | 1787 | 1949 | 1753 | 1573 | 1108 | 1089 | 830 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-on | on | on | on | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | on | cross-on | on | on | on | cross-on | cross-on |
High Tide | 6:30AM1.23m | 6:46PM1.31m | 7:09AM1.11m | 7:27PM1.17m | 8:02AM1.00m | 8:28PM1.05m | ||||||||||||||||||
Low Tide | 00:30AM0.31m | 12:28PM0.38m | 1:07AM0.43m | 1:04PM0.51m | 1:53AM0.55m | 1:53PM0.63m | ||||||||||||||||||
 |  |  | | | | | | | | | | | | | | | | | |  | | | | |
 | — | 7:20 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:18 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:17 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 14 | 15 | 15 | 14 | 13 | 13 | 13 | 12 | 12 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 15 | 15 | 14 | 13 | 12 |
Feels °C | 14 | 14 | 14 | 13 | 11 | 10 | 10 | 12 | 12 | 11 | 11 | 12 | 12 | 11 | 13 | 13 | 13 | 13 | 12 | 13 | 11 | 10 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SW 13 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 12 | SSW 12 | SW 12 | SW 12 | SSW 12 | SSW 13 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 |
| kJ | 628 | 673 | 699 | 666 | 878 | 1249 | 1250 | 1155 | 1043 | 964 | 864 | 808 | 795 | 718 | 718 | 691 | 968 | 1787 | 1949 | 1753 | 1573 | 1108 | 1089 | 830 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | WSW 13 | SW 12 | WSW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 308 | 313 | 660 | 1025 | 447 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 4 | SE 3 | ESE 4 | — | — | — | — | — | — | — | — | — | — | — | SSE 4 | — | ESE 4 |
| kJ | — | — | — | — | — | — | — | 8 | 3 | 8 | — | — | — | — | — | — | — | — | — | — | — | 16 | — | 13 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 16 | 16 | 32 | 27 | 21 | 16 | 12 | 16 | 12 | 21 | 27 | 27 | 10 | 10 | 10 | 16 | 16 | 21 | 30 | 318 | 21 | 16 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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