Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Tropical's surfForecast / Sumbawa / Indonesia
48hr Weather and Surf, issued 1 pm Saturday 20 Dec 2025 WITAForecast update in hr min s Forecast update imminent
Tropical's surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tropical's sea temperature is
29.4° C
(Which is normal for this time of year)How big are the waves at Tropical's today?
The current surf forecast for Tropical's at 8PM is: 1.2m 11s primary swell from a Southwest direction and 0.6m 8s secondary swell from a West direction (forecast issued at 01:00pm December 20). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (WITA) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Dec) | 3.5ft (1.1m) | 12s |
| Afternoon (20 Dec) | 4ft (1.2m) | 12s |
| Evening (20 Dec) | 4ft (1.2m) | 11s |
Table - waves today at Tropical's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||||||
| 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 15 | 11 | 12 | 14 | 14 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 373 | 400 | 360 | 347 | 341 | 341 | 216 | 253 | 220 | 175 | 212 | 178 | 175 | 154 | 174 | 174 | 220 | 261 | 280 | 412 | 301 | 293 | 297 | 268 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | glass | glass | glass | glass | glass | cross- off | cross | cross- on | cross- on | cross | cross | cross | cross | cross- off | cross | cross | cross | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 10:45AM 2.03 | 10:16PM 2.63 | 11:17AM 2.09 | 10:50PM 2.67 | 11:48AM 2.14 | 11:22PM 2.68 | ||||||||||||||||||
Low Tide / height (m) | 4:07PM 0.89 | 5:02AM 0.20 | 4:41PM 0.84 | 5:33AM 0.17 | 5:15PM 0.82 | 6:04AM 0.18 | ||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 |
| Sunset | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - |
 |  | |  | |  |  | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | 1 | 1 | 2 | 1 | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | - | 2 | 2 | 1 | 2 | 1 |
| Temp. °C | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 29 | 29 | 27 | 27 | 27 | 27 | 27 |
| Feels °C (?) | 32 | 31 | 31 | 33 | 32 | 32 | 31 | 33 | 32 | 32 | 32 | 32 | 32 | 32 | 31 | 32 | 31 | 32 | 31 | 30 | 30 | 30 | 30 | 29 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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