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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 11 am Saturday 11 Apr 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
17.3° C
(Which is 1.2°C warmer than 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 Saturday (Apr 11) at 9PM. The primary swell is predicted to be 0.5m and 12s period with a secondary swell of 0.4m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Charleston in the next 16 days are 3.0m 14s and forecast to arrive on Saturday (Apr 18) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Saturday (Apr 18) at 9AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sat 11th Apr) | 1.5ft (0.5m) 12s |
| Best Surf | 9PM (Tue 14th Apr) | 11ft (3.5m) 12s |
| Most Powerful | 6AM (Sat 18th Apr) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Charleston over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Heavy rain (total 21mm), heaviest during Mon night. Very mild (max 19°C on Sat afternoon, min 13°C on Mon night). Wind will be generally light. | Days 3-6 Weather Summary Heavy rain (total 45mm), heaviest during Tue afternoon. Very mild (max 15°C on Wed morning, min 11°C on Thu night). Winds decreasing (fresh winds from the W on Wed night, calm by Thu night). | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 13 | 9 | 12 | 12 | 12 | 11 | 11 | 12 | 14 | 13 | 12 | 12 | 11 | 11 | 10 | 10 | 11 | 11 | 14 | 9 | 13 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 149 | 87 | 117 | 228 | 441 | 785 | 651 | 1160 | 3144 | 2705 | 2400 | 2824 | 1701 | 2099 | 1782 | 2216 | 1975 | 1387 | 3065 | 1790 | 1886 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | off | cross- off | cross | cross | cross | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | glass | cross | cross- on | cross |
High Tide / height (m) | 5:46PM 2.07 | 6:16AM 2.18 | |||||||||||||||||||
Low Tide / height (m) | 11:27AM 0.93 | 11:56PM 0.94 | |||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
| Sunrise | 7:00 | - | - | 7:01 | - | - | 7:01 | - | - | 7:03 | - | - | 7:03 | - | - | 7:05 | - | - | 7:05 | - | - |
| Sunset | - | 6:08 | - | - | 6:07 | - | - | 6:06 | - | - | 6:04 | - | - | 6:02 | - | - | 6:00 | - | - | 6:00 | - |
 | |  |  |  |  |  | | |  | | | | |  | | | | |  |  | |
Rain (mm) | - | - | 1 | 1 | - | - | 4 | 1 | 14 | 6 | 10 | 12 | 2 | 2 | 8 | 3 | 2 | - | 4 | 12 | 15 |
| Temp. °C | 18 | 19 | 16 | 17 | 17 | 16 | 16 | 16 | 14 | 14 | 12 | 13 | 15 | 14 | 14 | 13 | 13 | 13 | 16 | 16 | 14 |
| Feels °C (?) | 16 | 17 | 14 | 17 | 15 | 14 | 16 | 15 | 11 | 10 | 8 | 6 | 11 | 9 | 7 | 7 | 8 | 10 | 13 | 12 | 13 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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