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Charleston Surf Forecast
/ West Coast South Island (21 surf breaks) /
Surf Forecasts:
Charleston surfForecast / West Coast South Island / New Zealand
16 Day Weather and Surf, issued 5 pm Saturday 16 May 2026 NZSTForecast update in hr min s Forecast update imminent
Charleston surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Charleston sea temperature is
15.2° C
(Which is normal for this time of year)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 Sunday (May 17) at 3AM. The primary swell is predicted to be 1.5m and 17s period with a secondary swell of 0.9m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Charleston in the next 16 days are 2.5m 12s and forecast to arrive on Saturday (May 23) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 7s period and expected on Friday (May 22) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 17th May) | 5ft (1.5m) 17s |
| Best Surf | 3AM (Sun 17th May) | 5ft (1.5m) 17s |
| Most Powerful | 9AM (Sat 23rd May) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Charleston over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 12°C on Sat afternoon, min 7°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Fri morning. Very mild (max 15°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
WSW 19 | WSW 18 | WSW 16 | WSW 16 | WSW 14 | WSW 13 | WSW 13 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | NW 13 | NW 11 | NNW 10 | NNW 12 | |
796 | 1687 | 1239 | 1041 | 633 | 307 | 303 | 749 | 529 | 521 | 384 | 372 | 356 | 258 | 158 | 97 | 95 | 86 | 145 | 563 | 1999 | |
Wind (km/h) | |||||||||||||||||||||
cross-on | glassy | glassy | cross-on | cross-off | glassy | cross | cross-off | cross-off | cross | cross | glassy | cross-on | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | |
High Tide | 10:14PM3.00m | 10:38AM3.05m | 11:02PM3.06m | 11:29AM3.03m | 11:51PM3.05m | 12:20PM2.96m | 00:43AM2.99m | 1:15PM2.83m | 1:38AM2.88m | 2:12PM2.67m | 2:37AM2.74m | 3:13PM2.53m | 3:40AM2.61m | ||||||||
Low Tide | 4:26AM-0.00m | 4:50PM0.01m | 5:16AM-0.04m | 5:40PM0.04m | 6:08AM-0.01m | 6:31PM0.12m | 7:02AM0.07m | 7:25PM0.24m | 7:59AM0.20m | 8:22PM0.37m | 8:59AM0.33m | 9:22PM0.49m | 10:02AM0.45m | ||||||||
 |  | | | | | | | | | | | | | |  |  |  | |  |  | |
 | — | — | 7:37 | — | — | 7:39 | — | — | 7:39 | — | — | 7:41 | — | — | 7:41 | — | — | 7:43 | — | — | 7:43 |
 | 5:22 | — | — | 5:22 | — | — | 5:21 | — | — | 5:20 | — | — | 5:19 | — | — | 5:17 | — | — | 5:17 | — | 5:16 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 55 | 23 | |
Temp °C | 12 | 10 | 11 | 11 | 9 | 10 | 10 | 8 | 10 | 11 | 8 | 10 | 11 | 9 | 14 | 15 | 14 | 15 | 16 | 15 | 14 |
11 | 8 | 10 | 9 | 7 | 8 | 7 | 6 | 7 | 8 | 5 | 8 | 9 | 5 | 12 | 12 | 10 | 11 | 12 | 10 | 12 | |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 18 | WSW 16 | WSW 16 | WSW 14 | WSW 13 | WSW 13 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 11 | NNW 8 | NNW 7 | N 7 | NNW 10 | NNW 12 |
 kJ | 402 | 1687 | 1239 | 1041 | 633 | 307 | 303 | 749 | 529 | 521 | 384 | 372 | 356 | 258 | 158 | 97 | 82 | 86 | 70 | 563 | 1999 |
Swell 2 Height (m) Direction Period (s) | WSW 19 | WSW 12 | — | — | W 21 | WSW 19 | W 18 | — | — | W 21 | W 21 | SW 20 | SW 20 | WNW 9 | NW 8 | NW 7 | WSW 11 | WSW 10 | NW 11 | WSW 12 | WSW 12 |
| kJ | 796 | 160 | — | — | 9 | 125 | 227 | — | — | 9 | 9 | 15 | 16 | 15 | 18 | 29 | 95 | 86 | 145 | 136 | 245 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 18 | WSW 18 | WSW 18 | WSW 16 | NW 13 | WSW 10 | WSW 15 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 34 | 31 | 61 | 51 | 85 | 57 | 87 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 0 | 0 | 15 | 0 | 0 | 15 | 0 | 0 | 15 | 15 | 0 | 15 | 0 | 0 | 0 | 24 | 68 | 184 | 76 | 15 |
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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