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Surf Forecasts:
Thunders surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 6 pm Saturday 30 May 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
30.3° C
(Which is slightly warmer than usual)How big are the waves at Thunders today (31 May):
- Morning surf: Morning surf (31 May, local time) - 4.5ft (1.4m), 12s period with SSW swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 4.5ft (1.4m), 12s period with SSW swell.
- Evening surf: Evening surf (31 May, local time) - 4.5ft (1.3m), 12s period with SSW swell.
The current surf forecast for Thunders at 1AM is: 1.5m 12s primary swell from a South-southwest direction and 0.4m 8s secondary swell from a West-northwest direction (forecast issued at 06:00pm May 30). The wind direction is predicted to be cross-onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 4.5ft (1.4m) | 12s |
| Afternoon (31 May) | 4.5ft (1.4m) | 12s |
| Evening (31 May) | 4.5ft (1.3m) | 12s |
Table - waves today at Thunders. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 29°C on Sat afternoon, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 30 | Sunday 31 | Monday 1 | Tue 2 | |||||||||||||||||||||
4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 16 | SSW 15 | SW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | |
824 | 787 | 657 | 647 | 636 | 598 | 598 | 589 | 508 | 500 | 454 | 446 | 402 | 393 | 496 | 576 | 553 | 578 | 876 | 889 | 763 | 774 | 702 | 634 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | on | on | on | glassy | glassy | glassy | glassy | glassy | on | on | glassy | glassy | glassy | cross | cross | cross-on | on | |
High Tide | 5:42PM0.54m | 5:51AM0.95m | 6:19PM0.53m | 6:26AM0.95m | 6:55PM0.53m | 7:01AM0.94m | ||||||||||||||||||
Low Tide | 10:58PM0.15m | 12:40PM0.10m | 11:33PM0.14m | 1:13PM0.09m | 00:08AM0.13m | |||||||||||||||||||
 |  |  | | |  | | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — |
 | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | 6:15 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 29 | 28 | 27 | 27 | 26 | 26 | 28 | 29 | 28 | 28 | 27 | 26 | 26 | 26 | 28 | 29 | 29 | 28 | 27 | 26 | 26 | 26 | 28 | 28 |
33 | 32 | 31 | 31 | 30 | 30 | 32 | 32 | 31 | 32 | 31 | 30 | 30 | 30 | 32 | 32 | 32 | 32 | 31 | 29 | 29 | 29 | 32 | 31 | |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 |
 kJ | 824 | 787 | 657 | 647 | 636 | 598 | 598 | 589 | 508 | 500 | 454 | 446 | 372 | 337 | 280 | 576 | 553 | 578 | 876 | 889 | 763 | 774 | 702 | 634 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SW 15 | SSW 11 | SSW 11 | SSW 11 | WNW 8 | WNW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 18 |
| kJ | 13 | 13 | 22 | 26 | 26 | 26 | 26 | 25 | 115 | 179 | 232 | 330 | 402 | 393 | 496 | 270 | 226 | 218 | 11 | 11 | 67 | 67 | 63 | 249 |
Swell 3 Height (m) Direction Period (s) | SE 7 | SE 7 | SSE 7 | SSE 7 | SSW 18 | SSW 18 | SSW 18 | SW 18 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SW 24 | SSW 20 | SSW 20 | SSW 19 | SSW 18 | S 7 |
| kJ | 8 | 8 | 5 | 5 | 31 | 61 | 62 | 79 | 21 | 21 | 21 | 21 | 21 | 12 | 12 | 12 | 12 | 12 | 22 | 38 | 75 | 122 | 128 | 40 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ESE 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 62 | 3 | 3 | 3 | 3 | 3 | 3 | 62 | 62 | 3 | 0 | 0 | 0 | 0 | 0 | 62 | 62 | 0 | 0 | 0 | 3 | 3 | 3 | 3 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||||||
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