Surf Forecasts:
How big are the waves at Arniston today (19 Sep):
- Morning surf: Morning surf (19 Sep, local time) - 5ft (1.6m), 7s period with E swell.
- Afternoon surf: Afternoon surf (19 Sep, local time) - 4.5ft (1.4m), 8s period with ESE swell.
- Evening surf: Evening surf (19 Sep, local time) - 4.5ft (1.3m), 15s period with SSW swell.
The current surf forecast for Arniston at 9PM is: 1.3m 15s primary swell from a South-southwest direction and 1.3m 8s secondary swell from a East-southeast direction (forecast issued at 01:00pm September 19). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Sep) | 5ft (1.6m) | 7s |
| Afternoon (19 Sep) | 4.5ft (1.4m) | 8s |
| Evening (19 Sep) | 4.5ft (1.3m) | 15s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 25°C on Tue morning, min 15°C on Sat afternoon). Winds increasing (light winds from the E on Sat night, fresh winds from the E by Mon afternoon). | |||||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | |||||||||||||||||||
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) | E 8 | ESE 8 | SW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | E 6 | E 6 | E 6 | E 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 287 | 238 | 301 | 665 | 899 | 862 | 710 | 599 | 451 | 386 | 374 | 273 | 260 | 214 | 178 | 175 | 172 | 154 | 239 | 221 | 209 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on |
High Tide | 8:23AM1.08m | 9:36PM1.10m | 11:47AM1.14m | 11:55PM1.20m | 12:38PM1.31m | ||||||||||||||||
Low Tide | 2:13PM0.93m | 5:06AM0.83m | 6:07PM0.85m | 6:25AM0.69m | 6:52PM0.70m | ||||||||||||||||
 | | |  |  | | |  | | | |  | | | |  | | | | | | |
 | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — |
 | — | — | 6:31 | — | — | — | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:34 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 16 | 16 | 16 | 15 | 15 | 16 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 17 | 18 | 17 | 16 | 15 |
Feels °C | 11 | 11 | 14 | 15 | 15 | 14 | 14 | 15 | 15 | 15 | 14 | 16 | 16 | 15 | 15 | 14 | 13 | 13 | 11 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 15 | ESE 8 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | ESE 8 | SW 12 | SW 12 | SW 12 | SSW 12 | SSW 15 | SSW 11 |
| kJ | 184 | 184 | 242 | 212 | 899 | 862 | 710 | 599 | 451 | 386 | 374 | 273 | 260 | 214 | 112 | 175 | 172 | 68 | 56 | 167 | 82 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SW 11 | SSW 15 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | — | — | — | — | SW 12 | — | — | SSW 12 | SW 12 | SW 11 | SSW 14 |
| kJ | 86 | 85 | 96 | 665 | 232 | 206 | 206 | 167 | 167 | 144 | — | — | — | — | 178 | — | — | 56 | 66 | 32 | 120 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 15 | SSW 15 | — | — |
| kJ | — | — | 301 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 43 | 72 | — | — |
Wind waves Height (m) Direction Period (s) | E 8 | ESE 8 | ESE 8 | — | — | — | — | — | — | — | ESE 8 | ESE 8 | ESE 8 | ESE 8 | — | ESE 8 | E 5 | E 6 | E 6 | E 6 | E 6 |
| kJ | 287 | 238 | 238 | — | — | — | — | — | — | — | 167 | 171 | 144 | 140 | — | 112 | 61 | 154 | 239 | 221 | 209 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 81 | 184 | 246 | 81 | 81 | 65 | 65 | 81 | 81 | 81 | 140 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 |
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