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Surf Forecasts:
Boat Basin Lefts surfForecast / Guam / Guam
48hr Weather and Surf, issued 9 pm Tuesday 26 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
28.7° 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 4AM is: 1.4m 9s primary swell from a East direction and 0.5m 12s secondary swell from a North-northeast direction, 0.5m 10s secondary swell from a North direction (forecast issued at 09:00pm May 26). The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 May) | 5ft (1.6m) | 9s |
| Afternoon (27 May) | 5ft (1.5m) | 8s |
| Evening (27 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 30mm), heaviest during Tue night. Warm (max 29°C on Thu morning, min 27°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 26 | Wednesday 27 | Thursday 28 | Friday 29 | |||||||||||||||||||||
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 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 10 | E 10 | E 8 | |
257 | 257 | 257 | 298 | 381 | 335 | 328 | 313 | 392 | 305 | 260 | 253 | 224 | 230 | 156 | 175 | 180 | 188 | 167 | 167 | 167 | 225 | 230 | 205 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | 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 | 4:54PM0.70m | 4:15AM0.87m | 6:09PM0.74m | 4:42AM0.87m | 7:08PM0.78m | 5:10AM0.86m | ||||||||||||||||||
Low Tide | 10:00PM0.52m | 11:27AM0.30m | 10:57PM0.59m | 12:03PM0.23m | 11:52PM0.63m | 12:36PM0.17m | ||||||||||||||||||
 | | | |  |  | |  |  | |  | |  | | | | | | | |  | | | | |
 | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — |
 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:43 |
1 | 1 | 3 | 3 | 6 | 3 | 2 | — | — | — | — | — | — | — | 1 | 3 | 3 | 1 | 3 | 1 | — | — | — | — | |
Temp °C | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 29 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 |
28 | 28 | 28 | 28 | 28 | 28 | 28 | 31 | 28 | 28 | 29 | 31 | 31 | 32 | 32 | 32 | 30 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | |
Swell 1 Height (m) Direction Period (s) | N 10 | N 10 | NNE 13 | NNE 12 | NNE 12 | NNE 12 | NNE 12 | NNE 12 | E 8 | NNE 11 | E 8 | E 8 | E 8 | SW 8 | E 8 | E 9 | SW 10 | SW 10 | SW 10 | SW 11 | SW 11 | SW 10 | WSW 10 | WSW 10 |
 kJ | 75 | 75 | 93 | 89 | 164 | 161 | 156 | 150 | 273 | 107 | 260 | 253 | 224 | 51 | 156 | 175 | 296 | 369 | 478 | 441 | 538 | 355 | 466 | 485 |
Swell 2 Height (m) Direction Period (s) | NNE 13 | NNE 14 | N 10 | N 10 | SSW 7 | SW 8 | SW 8 | SW 8 | NNE 11 | SW 8 | NNE 11 | NNE 11 | SW 8 | NNE 11 | SW 8 | SW 10 | E 9 | E 9 | E 8 | E 8 | NNE 12 | E 10 | NNE 11 | E 8 |
| kJ | 70 | 73 | 50 | 50 | 5 | 18 | 17 | 31 | 111 | 28 | 107 | 107 | 53 | 44 | 51 | 150 | 180 | 188 | 167 | 167 | 90 | 225 | 82 | 205 |
Swell 3 Height (m) Direction Period (s) | SSE 5 | S 5 | S 5 | SSW 7 | SE 13 | SE 13 | SE 13 | SE 13 | SW 8 | SSW 9 | SW 8 | SW 8 | NNE 11 | NE 13 | NNE 11 | NNE 12 | NNE 10 | NNE 12 | NNE 12 | NNE 12 | SE 12 | WSW 13 | SE 11 | NNE 11 |
| kJ | 9 | 5 | 4 | 5 | 7 | 7 | 7 | 6 | 29 | 8 | 29 | 51 | 65 | 40 | 44 | 98 | 40 | 96 | 94 | 93 | 6 | 189 | 19 | 79 |
Wind waves Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | — | — | — | E 8 | — | — | — | — | — | — | E 8 | — | E 10 | — |
| kJ | 257 | 257 | 257 | 298 | 381 | 335 | 328 | 313 | 392 | 305 | — | — | — | 230 | — | — | — | — | — | — | 167 | — | 230 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 20 | 1290 | 1290 | 1836 | 1836 | 1836 | 20 | 20 | 1885 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 20 | 20 | 1836 | 0 | 20 | 20 | 0 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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