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Charleston Surf Forecast
/ West Coast South Island (21 surf breaks) /
Surf Forecasts:
Charleston surfForecast / West Coast South Island / New Zealand
48hr Weather and Surf, issued 11 am Wednesday 20 Aug 2025 NZST
How big are the waves at Charleston today?
The current surf forecast for Charleston at 6PM is: 1.8m 12s primary swell from a West-southwest direction and 0.9m 15s secondary swell from a West-southwest direction (forecast issued at 11:00am August 20). The wind direction is predicted to be cross-shore.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 6.5ft (2.0m) | 12s |
| Afternoon (20 Aug) | 6ft (1.9m) | 12s |
| Evening (20 Aug) | 6.5ft (2.0m) | 14s |
Table - waves today at Charleston. (Swell directed towards the surf break)
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | |||||||||||||||||||||
| 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 14 | 14 | 14 | 14 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 1208 | 1210 | 1326 | 1384 | 1631 | 1584 | 1462 | 1305 | 1400 | 1291 | 1307 | 1169 | 1184 | 1214 | 1169 | 1044 | 1214 | 1368 | 1347 | 1455 | 1592 | 1491 | 1257 | 1187 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- on | cross | off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | glass | glass | glass | glass | glass |
High Tide / height (m) | 8:09AM 2.46 | 8:34PM 2.60 | 9:06AM 2.58 | 9:27PM 2.74 | 9:54AM 2.69 | 10:12PM 2.85 | ||||||||||||||||||
Low Tide / height (m) | 2:17PM 0.57 | 2:50AM 0.42 | 3:12PM 0.43 | 3:42AM 0.28 | 3:59PM 0.31 | 4:26AM 0.18 | ||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | |||||||||||||||||||||
| Sunrise | 7:18 | - | - | - | - | - | - | - | 7:16 | - | - | - | - | - | - | - | 7:16 | - | - | - | - | - | - | - |
| Sunset | - | - | 5:55 | - | - | - | - | - | - | - | 5:57 | - | - | - | - | - | - | - | 5:58 | - | - | - | - | - |
 | | |  | | | | | | |  | | | |  |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 9 | 11 | 13 | 11 | 10 | 9 | 8 | 8 | 10 | 12 | 12 | 11 | 10 | 9 | 9 | 10 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 10 |
| Feels °C (?) | 6 | 8 | 10 | 8 | 7 | 5 | 4 | 5 | 7 | 10 | 10 | 9 | 7 | 6 | 6 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 8 | 9 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for West Coast South Island
The wind is still cross-on at Charleston (moderate winds from the SW at WestportAeroAws 21 km from Charleston). 1.9m 12s groundswell from the WSW with a 0.9m 15s groundswell, also from the WSW. 2 swells combining so expect closeout sets.
21 km away, 1 h 1 min ago
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