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Surf Forecasts:
Boat Basin Lefts surfForecast / Guam / Guam
48hr Weather and Surf, issued 3 pm Saturday 06 Dec 2025 ChSTForecast update in hr min s Forecast update imminent
Boat Basin Lefts surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Boat Basin Lefts sea temperature is
29.1° C
(Which is slightly warmer than usual)How big are the waves at Boat Basin Lefts today?
The current surf forecast for Boat Basin Lefts at 9PM is: 1.3m 11s primary swell from a North-northwest direction and 0.6m 13s secondary swell from a North-northeast direction, 1.1m 9s secondary swell from a East direction (forecast issued at 03:00pm December 06). The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Dec) | - | - |
| Afternoon (06 Dec) | 4.5ft (1.4m) | 12s |
| Evening (06 Dec) | 4.5ft (1.3m) | 11s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| 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 | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 8 | 9 | 16 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 9 | 9 | 9 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 415 | 497 | 455 | 373 | 302 | 237 | 201 | 205 | 210 | 220 | 215 | 215 | 220 | 268 | 227 | 215 | 311 | 246 | 257 | 246 | 282 | 332 | 349 | 314 |
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 | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 7:16PM 0.94 | 10:37AM 0.95 | 8:05PM 0.92 | 11:27AM 0.94 | 8:57PM 0.88 | |||||||||||||||||||
Low Tide / height (m) | 2:40PM 0.72 | 2:57AM -0.10 | 3:34PM 0.72 | 3:46AM -0.06 | 4:31PM 0.70 | 4:35AM 0.02 | ||||||||||||||||||
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 | - |
| Sunset | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - |
 |  |  | |  |  | | | | | | | | | |  | | | | | | |  | | |
Rain (mm) | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | 1 | - | 1 | - | - | - | 1 | 3 | - | 1 | - |
| Temp. °C | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 28 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 28 |
| Feels °C (?) | 31 | 32 | 31 | 30 | 30 | 29 | 29 | 28 | 31 | 31 | 31 | 30 | 29 | 29 | 29 | 30 | 31 | 31 | 31 | 29 | 29 | 29 | 28 | 28 |
- 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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