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Surf Forecasts:
Boat Basin Lefts surfForecast / Guam / Guam
48hr Weather and Surf, issued 9 pm Saturday 25 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 5AM is: 1.3m 7s primary swell from a East-northeast direction and 0.6m 13s secondary swell from a North-northeast direction, 0.2m 8s secondary swell from a North-northwest direction (forecast issued at 09:00pm April 25). The wind direction is predicted to be cross-shore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 Apr) | 4.5ft (1.4m) | 7s |
| Afternoon (26 Apr) | 5ft (1.5m) | 7s |
| Evening (26 Apr) | 5ft (1.5m) | 7s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Mon morning. Warm (max 28°C on Mon morning, min 26°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||||||
Sat 25 | Sunday 26 | Monday 27 | Tuesday 28 | |||||||||||||||||||||
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 | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
NNE 13 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | |
139 | 135 | 136 | 144 | 175 | 175 | 198 | 189 | 187 | 206 | 254 | 268 | 266 | 240 | 210 | 210 | 178 | 183 | 212 | 247 | 321 | 372 | 418 | 427 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | 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 | 4:21AM0.86m | 3:06PM0.71m | 4:56AM0.87m | 4:39PM0.73m | 5:24AM0.87m | |||||||||||||||||||
Low Tide | 8:50PM0.25m | 10:28AM0.57m | 9:52PM0.32m | 11:18AM0.49m | 10:49PM0.39m | 11:58AM0.40m | ||||||||||||||||||
 |  | | |  | | | | |  | | | |  | | | | | |  | | | | | |
 | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — |
 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 |
— | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 1 | — | — | — | — | |
Temp °C | 27 | 27 | 27 | 27 | 26 | 27 | 27 | 27 | 27 | 26 | 27 | 26 | 26 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 28 | 28 |
28 | 28 | 27 | 26 | 25 | 25 | 26 | 26 | 27 | 26 | 28 | 27 | 28 | 29 | 28 | 29 | 29 | 29 | 29 | 27 | 28 | 26 | 27 | 28 | |
Swell 1 Height (m) Direction Period (s) | NNE 13 | NNE 13 | NNE 13 | NNE 13 | NNE 13 | NNE 13 | NNE 13 | NNE 12 | NNE 12 | NNE 12 | NNE 12 | NNE 14 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NNE 13 | NNE 14 | NNE 14 | NNE 14 | NNE 14 | NNE 14 |
 kJ | 139 | 135 | 135 | 133 | 133 | 95 | 93 | 85 | 81 | 81 | 83 | 115 | 266 | 240 | 210 | 210 | 178 | 183 | 62 | 165 | 163 | 160 | 156 | 192 |
Swell 2 Height (m) Direction Period (s) | NE 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNE 15 | NNE 15 | NNE 15 | N 18 | NNE 13 | NNE 13 | NNE 13 | NNE 13 | NNE 13 | NNE 15 | NNE 15 | NNW 11 | NNW 11 | N 10 | N 10 | S 12 |
| kJ | 26 | 7 | 6 | 6 | 6 | 5 | 5 | 5 | 22 | 21 | 21 | 6 | 101 | 99 | 98 | 98 | 96 | 135 | 87 | 23 | 37 | 31 | 31 | 3 |
Swell 3 Height (m) Direction Period (s) | NW 8 | SE 12 | SE 12 | SE 12 | E 11 | SE 11 | NE 16 | NE 10 | ENE 10 | NW 7 | NW 10 | NW 10 | NE 18 | NNE 8 | NNE 17 | NNE 16 | NNE 16 | NW 10 | N 12 | SE 13 | S 13 | SE 13 | S 13 | W 8 |
| kJ | 3 | 5 | 5 | 5 | 2 | 5 | 10 | 4 | 10 | 2 | 4 | 4 | 13 | 6 | 28 | 52 | 51 | 4 | 11 | 7 | 3 | 7 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | — | — | — | — | — | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 92 | 132 | 136 | 144 | 175 | 175 | 198 | 189 | 187 | 206 | 254 | 268 | — | — | — | — | — | — | 212 | 247 | 321 | 372 | 418 | 427 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1373 | 1373 | 1304 | 1373 | 1373 | 1373 | 1373 | 1373 | 1373 | 1836 | 1836 | 1836 | 1836 | 20 | 20 | 20 | 20 | 20 | 20 | 1836 | 1836 | 1836 | 1864 | 1373 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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