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Thunders surfForecast / Mentawi Islands / Indonesia
12 Day Weather and Surf, issued 12 am Saturday 17 May 2025 WIB
Best Forecast Surf Conditions for Thunders this week:
The surf forecast for Thunders over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (May 17) at 4AM. The primary swell is predicted to be 4ft and 14s period with a secondary swell of 2ft and 10s. Another secondary swell of 4ft and 8s 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 12 days are 6ft 16s and forecast to arrive on Friday (May 23) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2ft 4s period and expected on Saturday (May 17) at 7AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 17th May) | 3.5ft (1.1m) 14s |
| Best Surf | 7AM (Thu 22nd May) | 5ft (1.6m) 16s |
| Most Powerful | 4PM (Fri 23rd May) | 5.5ft (1.7m) 16s |
Table - best surf conditions forecast for Thunders over the next 12 days.
Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wed 28 | |||||||||||||||||||||||||
| 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 (ft) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 15 | 14 | 14 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 18 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 568 | 425 | 362 | 264 | 537 | 412 | 272 | 206 | 261 | 295 | 250 | 290 | 202 | 410 | 754 | 1048 | 1239 | 1224 | 905 | 737 | 1469 | 1154 | 924 | 796 | 621 | 479 | 440 | 331 | 261 | 175 | 169 | 150 | 189 | 248 | 252 | 198 |
Wind (mph) | ||||||||||||||||||||||||||||||||||||
| 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 | glass | glass | cross- on | cross- on | cross- on | on | cross- on | glass | on | glass | glass | cross | glass | glass | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | glass | glass | on |
High Tide / height (ft) | 8:27AM 2.99 | 8:56PM 1.61 | 9:05AM 2.89 | 9:47PM 1.61 | 9:50AM 2.79 | 10:56PM 1.64 | 10:46AM 2.66 | 12:18AM 1.84 | 11:53AM 2.53 | 1:31AM 2.13 | 1:09PM 2.43 | 2:31AM 2.49 | 2:23PM 2.33 | 3:22AM 2.89 | 3:29PM 2.23 | 4:09AM 3.28 | 4:28PM 2.17 | 4:55AM 3.54 | 5:21PM 2.07 | 5:42AM 3.74 | 6:12PM 2 | 6:28AM 3.77 | ||||||||||||||
Low Tide / height (ft) | 1:34AM 0.49 | 3:20PM 0.46 | 2:09AM 0.66 | 4:06PM 0.56 | 2:51AM 0.82 | 4:58PM 0.62 | 3:50AM 1.02 | 5:56PM 0.66 | 5:15AM 1.18 | 6:54PM 0.62 | 7:00AM 1.21 | 7:48PM 0.56 | 8:34AM 1.02 | 8:37PM 0.46 | 9:47AM 0.69 | 9:23PM 0.36 | 10:48AM 0.39 | 10:08PM 0.23 | 11:42AM 0.13 | 10:53PM 0.16 | 12:32PM -0.03 | 11:37PM 0.1 | 1:21PM -0.07 | |||||||||||||
Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wed 28 | |||||||||||||||||||||||||
| Sunrise | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - |
| Sunset | - | - | 6:14 | - | - | 6:14 | - | - | 6:14 | - | - | 6:14 | - | - | 6:14 | - | - | 6:14 | - | - | 6:14 | - | - | 6:14 | - | - | 6:14 | - | - | 6:15 | - | - | 6:15 | - | - | 6:15 |
 |  |  |  | | | | | | |  |  |  | | |  | | | | | | | | | | | | | | | | | | | | | |
Rain (in) | - | - | - | 0.2 | - | - | 0.3 | - | - | - | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °F | 82 | 86 | 86 | 82 | 84 | 84 | 82 | 84 | 84 | 82 | 82 | 84 | 82 | 84 | 82 | 81 | 84 | 84 | 81 | 84 | 84 | 81 | 84 | 82 | 81 | 82 | 82 | 81 | 84 | 82 | 81 | 84 | 84 | 81 | 84 | 84 |
| Feels °F (?) | 86 | 88 | 90 | 88 | 90 | 86 | 88 | 90 | 91 | 93 | 91 | 91 | 88 | 91 | 90 | 88 | 90 | 90 | 88 | 90 | 90 | 88 | 90 | 86 | 86 | 88 | 86 | 86 | 88 | 84 | 86 | 90 | 90 | 90 | 93 | 93 |
Short Range Forecast: Moderate rain (total 0.5in), heaviest on Sun night. Warm (max 86°F on Sat morning, min 81°F on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 0.2in), mostly falling on Wed morning. Warm (max 84°F on Tue afternoon, min 81°F on Mon night). Wind will be generally light. | Days 6-9 Weather Summary Mostly dry. Warm (max 84°F on Fri morning, min 79°F on Fri night). Wind will be generally light. | Long Range Forecast: Mostly dry. Warm (max 84°F on Mon morning, min 79°F on Sun night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
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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 12 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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