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Surf Forecasts:
Thunders surfForecast / Mentawi Islands / Indonesia
16 Day Weather and Surf, issued 6 pm Saturday 11 Apr 2026 WIBForecast update in hr min s Forecast update imminent
Thunders surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Thunders sea temperature is
29.5° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Thunders this week:
The surf forecast for Thunders over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Apr 12) at 4AM. The primary swell is predicted to be 0.7m and 20s period with a secondary swell of 0.9m and 12s. Another secondary swell of 0.5m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Thunders in the next 16 days are 1.3m 16s and forecast to arrive on Tuesday (Apr 14) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 12th Apr) | 2.5ft (0.7m) 20s |
| Best Surf | 1AM (Mon 13th Apr) | 3.5ft (1.1m) 18s |
| Most Powerful | 1AM (Tue 14th Apr) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Thunders over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Heavy rain (total 26mm), heaviest during Sat night. Warm (max 29°C on Sat afternoon, min 27°C on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Heavy rain (total 20mm), heaviest during Tue night. Warm (max 28°C on Tue afternoon, min 26°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||
Sat 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 20 | 18 | 18 | 17 | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 15 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 345 | 304 | 373 | 318 | 786 | 717 | 765 | 909 | 733 | 614 | 667 | 507 | 386 | 589 | 556 | 472 | 458 | 286 | 212 | 359 | 305 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | glass | cross | glass | cross- on | on | cross- on | cross- on | ||
High Tide / height (m) | 2:33AM 0.44 | ||||||||||||||||||||||
Low Tide / height (m) | 8:16PM 0.30 | 6:18AM 0.39 | |||||||||||||||||||||
Sat 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||||
| Sunrise | - | - | 6:18 | - | - | 6:18 | - | - | 6:18 | - | - | 6:18 | - | - | 6:18 | - | - | 6:16 | - | - | 6:16 | ||
| Sunset | 6:21 | - | - | 6:21 | - | - | 6:21 | - | - | 6:20 | - | - | 6:20 | - | - | 6:20 | - | - | 6:20 | - | - | ||
 |  |  | | |  | | | | | | | | | | |  | | | | | |||
Rain (mm) | - | 8 | - | - | 3 | 2 | 1 | 10 | 2 | 1 | 9 | 1 | 1 | 6 | - | 1 | 1 | - | 1 | 2 | - | ||
| Temp. °C | 29 | 28 | 29 | 28 | 27 | 29 | 29 | 28 | 29 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 29 | ||
| Feels °C (?) | 30 | 31 | 32 | 30 | 30 | 32 | 32 | 31 | 32 | 30 | 30 | 32 | 31 | 31 | 32 | 31 | 33 | 31 | 31 | 30 | 32 | ||
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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 Thunders 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 Thunders Surf forecast
The above surf forecast table for Thunders provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Thunders can be found by selecting the local surf guide option on the grey menu. Our Thunders 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 (Thunders) 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 Thunders 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.
Are you planning a holiday in Mentawi Islands? If you are looking for accommodation near Thunders, camping, hotels and holiday cottages in Mentawi Islands, consider staying in Sungaipenuh which is 172 km (107 miles) away.
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