Surf Forecasts:
Charleston surf forecast from 18 Oct 2026:
- Best quality surf: Sunday 25 Oct, 4AM (local time) - 6ft (1.8m), 15s period, WSW swell with cross-offshore winds.
- Most powerful swell: Sunday 25 Oct, 10AM (local time) - 7ft (2.2m), 17s period, WSW swell with 2,629 kJ wave energy.
- Next surfable swell (1★+): Tuesday 20 Oct, 1AM (local time) - 4.5ft (1.3m), 13s period with WSW swell.
Best Forecast Surf Conditions for Charleston this week:
The surf forecast for Charleston over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Oct 20) at 1AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 1.3m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Charleston in the next 16 days are 2.2m 17s and forecast to arrive on Sunday (Oct 25) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 16s period and expected on Monday (Oct 19) at 10AM.
| Wave Type | Time (NZDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Tue 20th Oct) | 4.5ft (1.3m) 13s |
| Best Surf | 4AM (Sun 25th Oct) | 6ft (1.8m) 15s |
| Most Powerful | 10AM (Sun 25th Oct) | 7ft (2.2m) 17s |
Table - best surf conditions forecast for Charleston over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 14°C on Tue morning, min 8°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Thu morning, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 17 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 11 | WSW 15 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 17 | WSW 16 | WSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 544 | 487 | 528 | 560 | 890 | 767 | 1230 | 704 | 622 | 922 | 534 | 703 | 451 | 621 | 1849 | 1305 | 1091 | 778 | 2629 | 2300 | 1825 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross-on | cross | cross | cross-on | cross-off | cross | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | glassy |
High Tide | 5:17AM2.06m | 5:50PM2.11m | 6:32AM2.06m | 7:00PM2.17m | 7:37AM2.16m | 7:58PM2.29m | 8:29AM2.31m | 8:46PM2.46m | 9:14AM2.49m | 9:29PM2.64m | 9:55AM2.66m | 10:10PM2.80m | 10:34AM2.82m | 10:52PM2.94m | |||||||
Low Tide | 11:31AM0.98m | 00:14AM0.93m | 12:41PM0.95m | 1:20AM0.83m | 1:43PM0.84m | 2:14AM0.68m | 2:34PM0.68m | 3:00AM0.50m | 3:18PM0.50m | 3:42AM0.32m | 4:00PM0.33m | 4:23AM0.16m | 4:41PM0.17m | ||||||||
 | |  | |  | | | | | | | | | |  | | | | | | | |
 | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:30 | — | — |
 | — | 7:59 | — | — | 8:00 | — | — | 8:01 | — | — | 8:02 | — | — | 8:04 | — | — | 8:05 | — | — | 8:06 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 10 | 14 | 13 | 11 | 14 | 14 | 11 | 15 | 15 | 11 | 15 | 14 | 13 | 14 | 14 | 11 | 15 | 15 | 14 |
Feels °C | 8 | 8 | 6 | 13 | 11 | 8 | 10 | 10 | 8 | 11 | 11 | 8 | 13 | 11 | 11 | 12 | 11 | 9 | 13 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 14 | WSW 7 | WSW 13 | WSW 12 | WSW 12 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 11 | WSW 15 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 17 | WSW 16 | WSW 15 |
| kJ | 544 | 487 | 178 | 560 | 890 | 399 | 1230 | 704 | 622 | 922 | 534 | 703 | 451 | 621 | 1849 | 1305 | 1091 | 778 | 2629 | 2300 | 1825 |
Swell 2 Height (m) Direction Period (s) | N 16 | N 15 | WSW 13 | WSW 8 | WSW 19 | WSW 17 | N 13 | N 13 | WSW 6 | W 22 | SW 20 | WSW 18 | WSW 16 | WSW 19 | WSW 10 | WSW 19 | WSW 19 | WSW 17 | — | — | — |
| kJ | 5 | 4 | 528 | 220 | 72 | 767 | 3 | 3 | 37 | 9 | 15 | 32 | 147 | 387 | 96 | 391 | 289 | 522 | — | — | — |
Swell 3 Height (m) Direction Period (s) | N 16 | — | N 15 | W 21 | N 14 | N 13 | — | N 13 | W 23 | N 12 | N 12 | W 24 | WSW 20 | W 19 | — | — | — | WSW 22 | — | — | — |
| kJ | 5 | — | 4 | 33 | 4 | 3 | — | 3 | 11 | 3 | 3 | 11 | 136 | 270 | — | — | — | 45 | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 7 | WSW 7 | — | — | — | WSW 6 | WSW 6 | WSW 6 | — | — | WSW 6 | — | — | WSW 11 | — | — | — | — | — | — | — |
| kJ | 203 | 264 | — | — | — | 91 | 72 | 58 | — | — | 99 | — | — | 328 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 180 | 190 | 0 | 26 | 23 | 23 | 56 | 203 | 0 | 186 | 196 | 15 | 15 | 203 | 15 | 23 | 23 | 15 | 15 | 51 | 0 |
Best forecast wave conditions in West Coast South Island | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Charleston surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Charleston Surf forecast
The above surf forecast table for Charleston provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Charleston can be found by selecting the local surf guide option on the grey menu. Our Charleston surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Charleston) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Charleston may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Charleston is 167 km (104 miles) from the city of Nelson. If you plan a holiday in West Coast South Island, look for hotels and other accommodation in Nelson. Nelson has rooms for a wide range of budgets as well as car hire and transport links.
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