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Surf Forecasts:
Boat Basin Lefts surfForecast / Guam / Guam
48hr Weather and Surf, issued 3 am Thursday 23 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
27.7° 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 9AM is: 0.9m 11s primary swell from a North-northeast direction (forecast issued at 03:00am April 23). An open ocean swell of 0.2m 10s is not directed at the surf break, a second open ocean swell of 1.2m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Apr) | 3ft (0.9m) | 11s |
| Afternoon (23 Apr) | 3ft (0.9m) | 11s |
| Evening (23 Apr) | 2.5ft (0.8m) | 11s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 28°C on Thu morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||||||||||
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 | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | E 6 | NNE 16 | NNE 16 | NNE 15 | NNE 15 | NNE 15 | NNE 14 | NNE 14 | NNE 14 | NNE 14 | NNE 14 | NNE 14 | NNE 14 | NNE 13 | ENE 7 | |
176 | 193 | 193 | 193 | 190 | 186 | 151 | 109 | 112 | 135 | 143 | 191 | 186 | 256 | 246 | 239 | 236 | 236 | 233 | 229 | 175 | 145 | 139 | 139 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 1:32AM0.87m | 10:43AM0.83m | 2:40AM0.86m | 11:50AM0.78m | 3:37AM0.86m | 1:21PM0.74m | ||||||||||||||||||
Low Tide | 6:26AM0.72m | 6:40PM0.11m | 7:53AM0.70m | 7:45PM0.18m | 9:20AM0.65m | 8:50PM0.25m | ||||||||||||||||||
 | |  | | | | | | | | | | | | | |  | |  | | | | | | |
 | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 27 | 28 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 |
28 | 28 | 28 | 27 | 29 | 29 | 29 | 29 | 27 | 27 | 28 | 26 | 28 | 27 | 28 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | |
Swell 1 Height (m) Direction Period (s) | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NE 11 | NNE 10 | NNE 16 | NE 11 | NNE 15 | NNE 15 | NNE 14 | NNE 14 | NNE 14 | NNE 14 | NNE 14 | NNE 14 | NNE 14 | NNE 13 | NNE 13 |
 kJ | 176 | 193 | 193 | 193 | 190 | 186 | 151 | 101 | 99 | 133 | 65 | 191 | 94 | 256 | 246 | 239 | 236 | 236 | 233 | 229 | 175 | 145 | 139 | 135 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | SE 10 | SE 10 | NNE 18 | NNE 17 | NNE 16 | NNE 16 | NNE 16 | NNE 16 | NNE 10 | NNE 15 | NE 10 | NNE 10 | NNE 10 | NE 10 | NE 10 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NW 8 |
| kJ | 10 | 10 | 10 | 4 | 4 | 30 | 29 | 91 | 104 | 100 | 142 | 64 | 186 | 89 | 67 | 69 | 46 | 45 | 41 | 39 | 41 | 26 | 26 | 3 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 15 | NE 16 | NE 16 | SE 14 | NE 15 | NE 15 | NE 13 | NE 13 | SE 13 | NE 12 | NE 11 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | NW 9 | NW 8 | SE 12 |
| kJ | 4 | 4 | 10 | 11 | 8 | 8 | 8 | 40 | 27 | 7 | 35 | 32 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 3 | 3 | 5 |
Wind waves Height (m) Direction Period (s) | ENE 5 | ENE 5 | ENE 5 | ENE 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 6 | E 6 | E 7 | E 7 | ENE 7 |
| kJ | 38 | 53 | 73 | 91 | 94 | 101 | 108 | 109 | 112 | 135 | 143 | 143 | 139 | 123 | 120 | 101 | 104 | 104 | 104 | 84 | 84 | 86 | 89 | 139 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1304 | 1304 | 1304 | 1304 | 1304 | 1373 | 1373 | 1837 | 1304 | 1304 | 1304 | 1304 | 1304 | 1304 | 1304 | 1304 | 1373 | 1836 | 1304 | 1304 | 1304 | 1304 | 1304 | 1304 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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