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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 5 am Wednesday 18 Jun 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 Thursday (Jun 19) at 3AM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.6m and 13s. Another secondary swell of 1.3m and 6s is also forecast. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Charleston in the next 12 days are 3.5m 11s and forecast to arrive on Friday (Jun 20) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 2s period and expected on Wednesday (Jun 25) at 3AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 19th Jun) | 3ft (0.9m) 16s |
| Best Surf | 9PM (Fri 20th Jun) | 11ft (3.5m) 11s |
| Most Powerful | 3PM (Fri 20th Jun) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Charleston over the next 12 days.
Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | |||||||||||||||||||||||||
| 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 | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 13 | 19 | 18 | 16 | 15 | 13 | 11 | 11 | 11 | 11 | 10 | 9 | 13 | 14 | 14 | 9 | 11 | 15 | 13 | 13 | 13 | 10 | 9 | 10 | 11 | 11 | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 586 | 477 | 830 | 1406 | 1202 | 2479 | 2521 | 3027 | 2395 | 1271 | 1008 | 603 | 463 | 581 | 1022 | 1325 | 1531 | 1877 | 1190 | 734 | 538 | 462 | 484 | 1013 | 3599 | 3741 | 22956 | 26336 | 14977 | 6694 | 4576 | 4105 | 1434 | 1086 | 899 | 687 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross | cross- off | on | on | cross- on | cross- on | cross- on | cross | cross- off | glass | cross- off | cross | cross- on | cross- on | cross | cross- on | cross- off | off | glass | cross- off | cross- off | cross | cross | cross | on | cross | cross- off | cross | glass | cross- off | cross | off | cross- off | glass | off |
High Tide / height (m) | 3:47PM 2.44 | 4:09AM 2.56 | 4:47PM 2.45 | 5:11AM 2.56 | 5:49PM 2.49 | 6:15AM 2.59 | 6:51PM 2.57 | 7:19AM 2.66 | 7:51PM 2.67 | 8:20AM 2.73 | 8:49PM 2.78 | 9:18AM 2.81 | 9:43PM 2.88 | 10:13AM 2.86 | 10:35PM 2.95 | 11:04AM 2.87 | 11:25PM 2.97 | 11:54AM 2.84 | 12:14AM 2.94 | 12:42PM 2.77 | 1:01AM 2.87 | 1:29PM 2.67 | 1:48AM 2.75 | |||||||||||||
Low Tide / height (m) | 9:35AM 0.44 | 9:56PM 0.55 | 10:32AM 0.44 | 10:55PM 0.54 | 11:32AM 0.42 | 11:58PM 0.50 | 12:33PM 0.39 | 1:02AM 0.43 | 1:34PM 0.34 | 2:04AM 0.33 | 2:33PM 0.29 | 3:03AM 0.23 | 3:29PM 0.23 | 3:59AM 0.14 | 4:22PM 0.19 | 4:52AM 0.09 | 5:13PM 0.18 | 5:43AM 0.09 | 6:02PM 0.20 | 6:32AM 0.13 | 6:50PM 0.25 | 7:20AM 0.21 | 7:36PM 0.34 | |||||||||||||
Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | |||||||||||||||||||||||||
| Sunrise | 8:00 | - | - | 8:00 | - | - | 8:00 | - | - | 8:02 | - | - | 8:02 | - | - | 8:02 | - | - | 8:02 | - | - | 8:02 | - | - | 8:02 | - | - | 8:02 | - | - | 8:03 | - | - | 8:02 | - | - |
| Sunset | - | 5:08 | - | - | 5:08 | - | - | 5:08 | - | - | 5:08 | - | - | 5:08 | - | - | 5:09 | - | - | 5:09 | - | - | 5:09 | - | - | 5:10 | - | - | 5:10 | - | - | 5:10 | - | - | 5:12 | - |
 |  |  |  |  |  |  |  | | | |  | | |  | | | | | |  | | |  | |  | |  | | | | | | | | | |
Rain (mm) | - | - | 12 | 8 | 7 | 9 | 5 | 4 | 8 | - | - | - | - | 1 | 9 | - | - | - | - | - | - | - | 3 | 3 | 5 | 11 | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 11 | 12 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 13 | 11 | 12 | 12 | 13 | 12 | 12 | 11 | 12 | 12 | 10 | 13 | 14 | 14 | 14 | 12 | 11 | 11 | 12 | 11 | 13 | 13 | 10 | 13 | 13 | 11 |
| Feels °C (?) | 9 | 8 | 7 | 10 | 10 | 7 | 6 | 6 | 8 | 10 | 12 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 10 | 10 | 8 | 9 | 9 | 6 | 6 | 9 | 6 | 9 | 9 | 10 | 10 | 10 | 8 | 11 | 12 | 9 |
Short Range Forecast: Heavy rain (total 53mm), heaviest during Wed night. Very mild (max 13°C on Thu morning, min 8°C on Wed morning). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Sun night. Very mild (max 13°C on Sat afternoon, min 10°C on Sat night). Wind will be generally light. | Days 6-9 Weather Summary Heavy rain (total 22mm), heaviest during Thu afternoon. Very mild (max 14°C on Wed afternoon, min 9°C on Tue night). Winds increasing (calm on Tue morning, strong winds from the N by Thu morning). | Long Range Forecast: Mostly dry. Very mild (max 13°C on Sat morning, min 10°C on Fri morning). Wind will be generally light. | |||||||||||||||||||||||||||||||||
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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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