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Surf Forecasts:
Boat Basin Lefts surfForecast / Guam / Guam
48hr Weather and Surf, issued 9 pm Friday 27 Mar 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
27.8° C
(Which is normal for this time of year)How big are the waves at Boat Basin Lefts today?
The current surf forecast for Boat Basin Lefts at 4AM is: 0.7m 10s primary swell from a North direction and 0.7m 8s secondary swell from a East-northeast direction (forecast issued at 09:00pm March 27). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Mar) | 2.5ft (0.7m) | 10s |
| Afternoon (28 Mar) | 2.5ft (0.8m) | 10s |
| Evening (28 Mar) | 2.5ft (0.8m) | 10s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Fri 27 | Saturday 28 | Sunday 29 | Monday 30 | |||||||||||||||||||||
| 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 | 4 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 10 | 10 | 10 | 12 | 11 | 11 | 11 | 11 | 12 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 82 | 77 | 102 | 100 | 98 | 96 | 123 | 123 | 123 | 125 | 96 | 120 | 158 | 101 | 80 | 86 | 120 | 246 | 91 | 202 | 156 | 191 | 224 | 96 |
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 | glass | cross- on | cross- on | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 5:21AM 0.83 | 2:50PM 0.78 | 6:00AM 0.85 | 4:21PM 0.78 | 6:29AM 0.86 | |||||||||||||||||||
Low Tide / height (m) | 9:24PM 0.17 | 10:34AM 0.67 | 10:30PM 0.20 | 11:33AM 0.61 | 11:27PM 0.24 | 12:19PM 0.53 | ||||||||||||||||||
Fri 27 | Saturday 28 | Sunday 29 | Monday 30 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:18 | - | - | - | - | - | - | - | 6:18 | - | - | - |
| Sunset | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 |
 |  | | |  |  | | | | | | |  | | | | | | | | | | | | |
Rain (mm) | 1 | - | - | - | - | 1 | 1 | 3 | 1 | - | - | - | - | - | - | 1 | - | - | 1 | 1 | - | 1 | 1 | - |
| Temp. °C | 27 | 27 | 27 | 26 | 27 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 28 | 28 |
| Feels °C (?) | 31 | 31 | 30 | 29 | 31 | 31 | 31 | 31 | 31 | 31 | 29 | 29 | 28 | 29 | 30 | 31 | 30 | 31 | 29 | 29 | 28 | 29 | 30 | 30 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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