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Charleston Surf Forecast
/ West Coast South Island (17 surf breaks) /
Charleston surfForecast / West Coast South Island / New Zealand
12 Day Weather and Surf, issued 11 pm Saturday 19 Apr 2025 NZST
Best Forecast Surf Conditions for Charleston this week:
The surf forecast for Charleston over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Apr 20) at 6AM. The primary swell is predicted to be 3.0m and 10s period with a secondary swell of 1.2m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Charleston in the next 12 days are 3.0m 10s and forecast to arrive on Sunday (Apr 20) 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 2.5m 10s period and expected on Sunday (Apr 20) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sun 20th Apr) | 10ft (3.0m) 10s |
| Best Surf | 9AM (Sun 20th Apr) | 10ft (3.0m) 10s |
| Most Powerful | 6AM (Sun 20th Apr) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Charleston over the next 12 days.
Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | Thu 01 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 16 | 10 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 16 | 15 | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 16 | 14 | 14 | 14 | 14 | 14 | 16 | 16 | 14 | 14 | 13 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 697 | 1633 | 452 | 282 | 249 | 192 | 183 | 339 | 406 | 399 | 495 | 575 | 881 | 1609 | 1237 | 857 | 622 | 440 | 282 | 277 | 265 | 1003 | 1043 | 1931 | 1517 | 1075 | 1534 | 2259 | 2515 | 3522 | 2662 | 1772 | 1579 | 908 | 715 | 800 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | glass | off | glass | glass | glass | cross- on | cross | cross- off | cross | glass | glass | cross- on | cross- off | cross- off | cross- off | cross | cross | cross | cross- off | cross- on | cross | cross | cross | cross- on | cross | glass | cross- off | cross- off | glass | glass | off | glass | cross |
High Tide / height (m) | 2:56AM 2.27 | 3:30PM 2.18 | 4:00AM 2.22 | 4:42PM 2.16 | 5:14AM 2.25 | 5:57PM 2.24 | 6:23AM 2.39 | 7:02PM 2.40 | 7:23AM 2.58 | 7:57PM 2.60 | 8:17AM 2.80 | 8:47PM 2.80 | 9:07AM 2.99 | 9:34PM 2.97 | 9:55AM 3.12 | 10:20PM 3.09 | 10:42AM 3.18 | 11:06PM 3.14 | 11:30AM 3.14 | 11:53PM 3.10 | 12:19PM 3.02 | 12:41AM 3.00 | 1:11PM 2.85 | |||||||||||||
Low Tide / height (m) | 9:17AM 0.81 | 9:45PM 0.87 | 10:25AM 0.82 | 10:55PM 0.86 | 11:37AM 0.73 | 12:05AM 0.75 | 12:43PM 0.56 | 1:08AM 0.58 | 1:41PM 0.35 | 2:03AM 0.37 | 2:33PM 0.14 | 2:54AM 0.16 | 3:22PM -0.03 | 3:42AM -0.01 | 4:09PM -0.13 | 4:30AM -0.11 | 4:55PM -0.14 | 5:18AM -0.13 | 5:43PM -0.07 | 6:08AM -0.07 | 6:31PM 0.07 | 6:59AM 0.07 | ||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | Thu 01 | |||||||||||||||||||||||||
| Sunrise | - | 7:09 | - | - | 7:11 | - | - | 7:11 | - | - | 7:13 | - | - | 7:13 | - | - | 7:15 | - | - | 7:16 | - | - | 7:16 | - | - | 7:18 | - | - | 7:18 | - | - | 7:20 | - | - | 7:22 | - |
| Sunset | - | - | 5:54 | - | - | 5:53 | - | - | 5:52 | - | - | 5:51 | - | - | 5:49 | - | - | 5:47 | - | - | 5:45 | - | - | 5:45 | - | - | 5:44 | - | - | 5:42 | - | - | 5:40 | - | - | 5:39 |
 |  | | |  | | |  | |  |  | | |  | | | | |  |  | | | | | | | | | | |  | | | | | | |
Rain (mm) | 1 | 3 | 1 | 4 | - | - | 1 | 1 | 1 | - | - | 2 | 7 | - | - | - | - | 3 | 47 | 17 | 37 | 85 | 19 | 30 | 51 | 19 | 44 | 8 | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 17 | 18 | 17 | 16 | 15 | 15 | 16 | 16 | 14 | 17 | 16 | 14 | 14 | 15 | 13 | 14 | 15 | 15 | 16 | 15 | 16 | 17 | 16 | 16 | 17 | 16 | 14 | 14 | 13 | 13 | 13 | 14 | 11 | 13 | 15 |
| Feels °C (?) | 16 | 17 | 19 | 18 | 15 | 15 | 14 | 16 | 16 | 12 | 15 | 15 | 14 | 13 | 14 | 13 | 12 | 12 | 12 | 12 | 11 | 14 | 16 | 14 | 13 | 13 | 13 | 11 | 13 | 12 | 12 | 12 | 13 | 9 | 11 | 12 |
Short Range Forecast: Moderate rain (total 12mm), heaviest on Sun morning. Very mild (max 19°C on Sat night, min 15°C on Mon afternoon). Winds decreasing (fresh winds from the NE on Sat night, calm by Mon afternoon). | Days 3-6 Weather Summary Moderate rain (total 12mm), heaviest on Wed night. Very mild (max 17°C on Wed morning, min 12°C on Thu night). Wind will be generally light. | Days 6-9 Weather Summary Heavy rain (total 349mm), heaviest during Sat night. Very mild (max 17°C on Sun morning, min 15°C on Fri night). Winds decreasing (fresh winds from the NNE on Sun night, light winds from the WNW by Mon afternoon). | Long Range Forecast: Light rain (total 8mm), mostly falling on Mon night. Very mild (max 15°C on Thu afternoon, min 10°C on Wed night). Mainly fresh winds. | |||||||||||||||||||||||||||||||||
- 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 12 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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