Surf Forecasts:
How big are the waves at Arniston today (12 Aug):
- Morning surf: Morning surf (12 Aug, local time) - 3.5ft (1.0m), 20s period with SSW swell.
- Afternoon surf: Afternoon surf (12 Aug, local time) - 4ft (1.2m), 18s period with SSW swell.
- Evening surf: Evening surf (12 Aug, local time) - 11ft (3.5m), 9s period with E swell.
The current surf forecast for Arniston at 5PM is: 3.0m 8s primary swell from a East direction and 1.2m 18s secondary swell from a South-southwest direction, 0.4m 10s secondary swell from a Southwest direction (forecast issued at 01:00pm August 12). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Aug) | 3.5ft (1.0m) | 20s |
| Afternoon (12 Aug) | 4ft (1.2m) | 18s |
| Evening (12 Aug) | 11ft (3.5m) | 9s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 25°C on Thu afternoon, min 13°C on Fri night). Winds decreasing (strong winds from the E on Wed afternoon, light winds from the NW by Thu afternoon). | |||||||||||||||||||||
Wed 12 | Thursday 13 | Friday 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 | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 19 | SSW 18 | E 8 | E 9 | E 9 | E 10 | E 10 | E 10 | SW 18 | ESE 9 | E 9 | E 9 | ESE 9 | SW 16 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SW 15 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 983 | 970 | 1332 | 1793 | 2313 | 2508 | 2037 | 1631 | 1293 | 1041 | 1153 | 984 | 627 | 546 | 484 | 510 | 506 | 451 | 333 | 301 | 231 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-on | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 3:15PM1.99m | 3:29AM1.93m | 3:52PM2.06m | 4:06AM1.91m | 4:27PM2.06m | ||||||||||||||||
Low Tide | 9:05AM0.02m | 9:29PM0.07m | 9:41AM-0.02m | 10:08PM0.04m | 10:15AM-0.01m | 10:43PM0.06m | |||||||||||||||
 | | |  | | | | | | | | | | |  | | | |  | | | |
 | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — |
 | — | — | 6:05 | — | — | — | — | — | — | — | 6:06 | — | — | — | — | — | — | — | 6:07 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 16 | 16 | 16 | 15 | 15 | 16 | 17 | 18 | 25 | 25 | 23 | 24 | 22 | 20 | 19 | 18 | 19 | 17 | 14 | 14 |
Feels °C | 7 | 8 | 7 | 7 | 6 | 9 | 9 | 11 | 12 | 21 | 24 | 20 | 21 | 20 | 18 | 17 | 15 | 16 | 13 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | SSW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SW 16 | SSW 20 | E 10 | E 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 |
| kJ | 983 | 864 | 835 | 798 | 780 | 625 | 807 | 1631 | 1293 | 1041 | 773 | 705 | 627 | 540 | 484 | 510 | 506 | 451 | 333 | 275 | 230 |
Swell 2 Height (m) Direction Period (s) | SSW 10 | SW 10 | SW 10 | S 10 | SSW 22 | SSW 21 | SW 16 | SSW 19 | SW 18 | SSW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 |
| kJ | 42 | 27 | 27 | 16 | 273 | 712 | 502 | 774 | 1124 | 1009 | 825 | 653 | 553 | 546 | 406 | 406 | 322 | 301 | 301 | 301 | 231 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | SSW 10 | S 10 | S 10 | S 10 | SW 16 | S 9 | S 9 | S 10 | S 10 | S 10 | S 10 | S 9 | — | — | — | — | — | SW 4 |
| kJ | 31 | 30 | 17 | 10 | 7 | 8 | 8 | 496 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | — | — | — | — | — | 5 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 9 | E 9 | E 10 | E 10 | — | — | — | E 9 | E 9 | — | — | — | — | — | W 4 | WSW 4 | WSW 4 | WSW 5 |
| kJ | 957 | 970 | 1332 | 1793 | 2313 | 2508 | 2037 | — | — | — | 1153 | 984 | — | — | — | — | — | 38 | 14 | 9 | 15 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 137 | 135 | 135 | 81 | 81 | 93 | 93 | 93 | 76 | 76 | 65 | 76 | 0 | 0 | 0 | 0 | 0 | 65 | 19 | 0 | 0 |
Best forecast wave conditions in Overberg | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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