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Surf Forecasts:
Boat Basin Lefts surfForecast / Guam / Guam
48hr Weather and Surf, issued 9 am Monday 20 Apr 2026 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
27.3° C
(Which is slightly cooler than normal)How big are the waves at Boat Basin Lefts today?
The current surf forecast for Boat Basin Lefts at 3PM is: 1.5m 12s primary swell from a North direction (forecast issued at 09:00am April 20). An open ocean swell of 0.4m 13s is not directed at the surf break. The wind direction is predicted to be glassy and the swell rating is 3.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Apr) | 5.5ft (1.7m) | 12s |
| Afternoon (20 Apr) | 5ft (1.5m) | 12s |
| Evening (20 Apr) | 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
Monday 20 | Tuesday 21 | Wednesday 22 | Thu 23 | |||||||||||||||||||||
| 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 | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 977 | 843 | 723 | 617 | 502 | 433 | 396 | 396 | 404 | 404 | 336 | 313 | 302 | 265 | 274 | 278 | 273 | 225 | 221 | 214 | 210 | 214 | 193 | 200 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- off | glass | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | cross | cross | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 8:29AM 0.92 | 11:17PM 0.91 | 9:08AM 0.90 | 12:23AM 0.89 | 9:51AM 0.88 | 1:32AM 0.87 | ||||||||||||||||||
Low Tide / height (m) | 3:53PM -0.00 | 4:19AM 0.67 | 4:44PM 0.01 | 5:16AM 0.71 | 5:40PM 0.05 | |||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thu 23 | |||||||||||||||||||||
| Sunrise | 6:05 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 6:34 | - | - | - | - | - | - | - | 6:34 | - | - | - | - | - | - | - | 6:34 | - | - | - | - |
 | |  | |  | |  | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 27 | 28 | 28 | 27 | 26 | 26 | 25 | 25 | 26 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 27 | 27 | 27 | 26 | 26 | 26 | 26 |
| Feels °C (?) | 29 | 30 | 31 | 31 | 30 | 29 | 29 | 28 | 27 | 27 | 28 | 28 | 27 | 28 | 27 | 26 | 26 | 28 | 27 | 27 | 28 | 28 | 27 | 28 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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