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Surf Forecasts:
Boat Basin Lefts surfForecast / Guam / Guam
48hr Weather and Surf, issued 9 pm Sunday 24 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
28.4° 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: 1.4m 8s primary swell from a East direction and 0.1m 8s secondary swell from a Northeast direction (forecast issued at 09:00pm May 24). An open ocean swell of 0.1m 10s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 May) | 5ft (1.5m) | 7s |
| Afternoon (25 May) | 5ft (1.6m) | 7s |
| Evening (25 May) | 5ft (1.5m) | 8s |
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 65mm), heaviest during Wed afternoon. Warm (max 29°C on Mon morning, min 25°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||||||
Sun 24 | Monday 25 | Tuesday 26 | Wednesday 27 | |||||||||||||||||||||
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 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | N 10 | N 10 | N 10 | N 10 | N 10 | NNE 13 | NNE 12 | NNE 12 | E 9 | E 9 | NNE 12 | |
291 | 292 | 279 | 260 | 277 | 220 | 257 | 264 | 246 | 302 | 318 | 334 | 334 | 76 | 73 | 75 | 75 | 77 | 95 | 89 | 150 | 252 | 219 | 117 | |
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 | off | off | off | off | off | off | off | off | cross-off | off | |
High Tide | 3:15AM0.89m | 3:18PM0.68m | 3:46AM0.88m | 4:54PM0.70m | 4:15AM0.87m | |||||||||||||||||||
Low Tide | 8:06PM0.34m | 10:00AM0.47m | 9:03PM0.44m | 10:47AM0.38m | 10:00PM0.52m | 11:27AM0.30m | ||||||||||||||||||
 | |  |  |  |  | |  | | | | | | | | | | | | | |  | | | |
 | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — |
 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:43 |
2 | 1 | — | — | — | 1 | — | — | — | — | — | — | 1 | 2 | 2 | 1 | 2 | 2 | 2 | 4 | 14 | 5 | 2 | 4 | |
Temp °C | 27 | 27 | 27 | 27 | 27 | 28 | 29 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 25 | 26 | 25 |
29 | 29 | 28 | 28 | 28 | 29 | 30 | 28 | 30 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 28 | 27 | 24 | 27 | 28 | 26 | |
Swell 1 Height (m) Direction Period (s) | NNE 8 | NE 8 | NE 8 | SE 10 | SE 9 | SE 14 | SE 14 | SE 14 | N 12 | N 12 | N 11 | N 11 | N 11 | N 10 | N 10 | N 10 | N 10 | N 10 | NNE 13 | NNE 12 | NNE 12 | E 9 | E 9 | NNE 12 |
 kJ | 6 | 2 | 2 | 4 | 3 | 8 | 8 | 8 | 12 | 25 | 41 | 59 | 84 | 76 | 73 | 75 | 75 | 77 | 95 | 89 | 150 | 252 | 219 | 117 |
Swell 2 Height (m) Direction Period (s) | SE 15 | SE 10 | SE 10 | NE 8 | SE 14 | NE 7 | NE 11 | N 13 | SE 14 | SE 14 | SE 14 | SE 14 | NE 15 | NNE 14 | NNE 14 | NNE 14 | NNE 13 | NNE 14 | N 10 | N 10 | SSW 8 | NNE 12 | NNE 12 | SSW 8 |
| kJ | 9 | 4 | 4 | 2 | 8 | 2 | 5 | 3 | 8 | 8 | 8 | 7 | 9 | 20 | 37 | 73 | 70 | 73 | 50 | 50 | 6 | 161 | 156 | 41 |
Swell 3 Height (m) Direction Period (s) | S 5 | SE 15 | SE 15 | SE 15 | NE 7 | N 11 | N 13 | N 11 | N 10 | N 10 | N 10 | N 10 | SE 14 | SE 14 | SE 13 | SE 13 | SW 8 | SSW 7 | SE 13 | SE 13 | SE 13 | SSW 8 | SW 8 | SE 13 |
| kJ | 1 | 9 | 9 | 9 | 2 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 7 | 7 | 7 | 7 | 2 | 5 | 6 | 7 | 7 | 6 | 33 | 6 |
Wind waves Height (m) Direction Period (s) | E 9 | E 9 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | ESE 6 | ESE 7 | ESE 6 | ESE 6 | S 6 | S 6 | ESE 9 |
| kJ | 291 | 292 | 279 | 260 | 277 | 220 | 257 | 264 | 246 | 302 | 318 | 334 | 334 | 349 | 309 | 326 | 404 | 223 | 288 | 262 | 246 | 98 | 81 | 364 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 20 | 1290 | 0 | 0 | 0 | 0 | 0 | 1290 | 1836 | 0 | 20 | 0 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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