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Surf Forecasts:
Boat Basin Lefts surfForecast / Guam / Guam
48hr Weather and Surf, issued 9 pm Sunday 19 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 2AM is: 1.9m 13s primary swell from a North direction (forecast issued at 09:00pm April 19). 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 4.
| 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
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||||||
| 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) (?) | 12 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1229 | 1288 | 1288 | 1088 | 977 | 843 | 723 | 617 | 502 | 433 | 396 | 396 | 404 | 404 | 336 | 313 | 302 | 265 | 288 | 288 | 293 | 288 | 283 | 229 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | glass | glass | cross- off | cross- off | cross | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 10:15PM 0.93 | 8:29AM 0.92 | 11:17PM 0.91 | 9:08AM 0.90 | 12:23AM 0.89 | 9:51AM 0.88 | ||||||||||||||||||
Low Tide / height (m) | 3:29AM 0.63 | 3:53PM -0.00 | 4:19AM 0.67 | 4:44PM 0.01 | 5:16AM 0.71 | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - |
| Sunset | - | - | - | - | - | - | - | 6:34 | - | - | - | - | - | - | - | 6:34 | - | - | - | - | - | - | - | 6:34 |
 |  | | |  | |  | |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 26 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 27 | 27 | 27 |
| Feels °C (?) | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 28 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 26 | 26 | 27 | 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
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Boat Basin Lefts surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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