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Surf Forecasts:
Boat Basin Lefts surfForecast / Guam / Guam
48hr Weather and Surf, issued 9 pm Friday 22 May 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
28.6° 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 3AM is: 1.5m 9s primary swell from a East direction and 0.2m 10s secondary swell from a North-northeast direction (forecast issued at 09:00pm May 22). The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 May) | 5ft (1.6m) | 9s |
| Afternoon (23 May) | 5ft (1.6m) | 9s |
| Evening (23 May) | 7ft (2.1m) | 7s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 58mm), heaviest during Mon morning. Warm (max 28°C on Sat morning, min 26°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||||||
Fri 22 | Saturday 23 | Sunday 24 | Monday 25 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
E 9 | E 9 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 7 | E 7 | E 8 | NNE 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | N 11 | E 8 | N 13 | |
402 | 402 | 395 | 356 | 412 | 474 | 432 | 412 | 378 | 482 | 362 | 7 | 334 | 339 | 351 | 309 | 302 | 295 | 307 | 247 | 315 | 2 | 627 | 3 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | |
High Tide | 1:56AM0.90m | 11:57AM0.74m | 2:39AM0.89m | 1:33PM0.69m | 3:15AM0.89m | 3:18PM0.68m | ||||||||||||||||||
Low Tide | 6:17PM0.13m | 7:47AM0.63m | 7:11PM0.24m | 9:00AM0.56m | 8:06PM0.34m | 10:00AM0.47m | ||||||||||||||||||
 | |  | |  | | | | |  | | | | | | | | | | |  | | | | |
 | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — |
 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:42 |
1 | 1 | — | 1 | 1 | 2 | 4 | 1 | 2 | — | — | — | 3 | 2 | 1 | 2 | 1 | 1 | 1 | 4 | 6 | 9 | 8 | 5 | |
Temp °C | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 26 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 |
28 | 28 | 29 | 30 | 29 | 29 | 28 | 29 | 27 | 27 | 29 | 29 | 29 | 28 | 28 | 28 | 29 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | |
Swell 1 Height (m) Direction Period (s) | NNE 10 | NNE 10 | NNE 10 | E 9 | NNE 10 | NNE 9 | S 10 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NE 8 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 |
 kJ | 10 | 10 | 10 | 356 | 9 | 8 | 2 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 3 | 9 | 8 | 8 | 8 | 8 |
Swell 2 Height (m) Direction Period (s) | S 11 | S 11 | S 11 | NNE 10 | S 10 | S 10 | S 10 | S 10 | — | E 16 | E 16 | E 16 | E 15 | SE 15 | SE 15 | SE 15 | SE 15 | SE 15 | SE 10 | SE 10 | N 11 | N 11 | N 11 | N 13 |
| kJ | 2 | 2 | 2 | 9 | 2 | 2 | 2 | 2 | — | 5 | 5 | 5 | 5 | 9 | 9 | 9 | 9 | 9 | 4 | 4 | 2 | 2 | 2 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | S 10 | S 10 | — | — | E 16 | E 16 | — | — | E 16 | — | — | — | S 10 | N 12 | — | SE 15 | SE 15 | N 10 | — | — | N 13 | N 11 |
| kJ | — | — | 2 | 2 | — | — | 5 | 5 | — | — | 5 | — | — | — | 2 | 3 | — | 9 | 9 | 2 | — | — | 3 | 2 |
Wind waves Height (m) Direction Period (s) | E 9 | E 9 | E 9 | — | E 9 | ENE 9 | ENE 9 | E 9 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 8 | ESE 8 |
| kJ | 402 | 402 | 395 | — | 412 | 474 | 432 | 412 | 378 | 482 | 362 | 316 | 334 | 339 | 351 | 309 | 302 | 295 | 307 | 247 | 315 | 491 | 627 | 472 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1866 | 1836 | 1836 | 1836 | 1836 | 1836 | 1864 | 1908 | 1908 | 0 | 1836 | 1836 | 1836 | 1836 | 1373 | 1905 | 1885 | 1290 | 1836 | 1290 | 1290 | 1290 | 1290 | 1908 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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