Surf Forecasts:
How big are the waves at Boat Basin Lefts today (07 Aug):
- Morning surf: Morning surf (07 Aug, local time) - 4.5ft (1.4m), 13s period with NW swell.
- Afternoon surf: Afternoon surf (07 Aug, local time) - 7ft (2.1m), 9s period with W swell.
- Evening surf: Evening surf (07 Aug, local time) - 7ft (2.1m), 10s period with W swell.
The current surf forecast for Boat Basin Lefts at 5AM is: 1.6m 13s primary swell from a Northwest direction and 0.6m 10s secondary swell from a East-northeast direction, 1.9m 8s secondary swell from a West direction (forecast issued at 09:00pm August 06). The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 Aug) | 4.5ft (1.4m) | 13s |
| Afternoon (07 Aug) | 7ft (2.1m) | 9s |
| Evening (07 Aug) | 7ft (2.1m) | 10s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 22mm), heaviest during Thu night. Warm (max 29°C on Fri morning, min 28°C on Thu night). Mainly fresh winds. | ||||||||||||||||||
Thu 6 | Friday 7 | Saturday 8 | ||||||||||||||||
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 |  |  |  |  |  |  |  | |||||||||||
Wave Height (m) Direction Period (s) | NNW 12 | NNW 12 | NNW 12 | NW 13 | NW 13 | NW 13 | W 9 | W 9 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 |
Wave Graph  | ||||||||||||||||||
 kJ | 517 | 626 | 691 | 841 | 841 | 613 | 747 | 715 | 813 | 821 | 838 | 938 | 938 | 947 | 961 | 942 | 1026 | 1004 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross |
High Tide | 00:35AM0.89m | 4:04PM0.73m | 1:21AM0.89m | 5:38PM0.78m | ||||||||||||||
Low Tide | 6:34PM0.61m | 8:25AM0.20m | 7:41PM0.68m | 9:30AM0.13m | 9:14PM0.73m | |||||||||||||
 | | | |  | | | | |  | | | |  | | | | | |
 | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — |
mm | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | — | 1 | 1 | 1 | — | 1 | 1 | — | 2 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 30 | 30 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | NNW 12 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | ENE 10 | NW 12 | NW 12 | ENE 14 |
| kJ | 428 | 382 | 691 | 841 | 841 | 613 | 519 | 435 | 287 | 282 | 232 | 195 | 153 | 147 | 72 | 210 | 210 | 236 |
Swell 2 Height (m) Direction Period (s) | NNW 12 | NNW 12 | SSE 9 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | NW 11 | ENE 10 | ENE 14 | NW 12 |
| kJ | 517 | 626 | 65 | 71 | 71 | 68 | 68 | 71 | 99 | 95 | 92 | 94 | 95 | 95 | 75 | 72 | 129 | 169 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SSE 9 | ENE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 9 | SE 9 | SE 9 | ENE 14 | NW 13 | NE 14 | ENE 10 | SE 11 |
| kJ | 96 | 88 | 69 | 46 | 45 | 30 | 28 | 28 | 28 | 24 | 14 | 22 | 22 | 78 | 109 | 96 | 60 | 18 |
Wind waves Height (m) Direction Period (s) | — | W 8 | W 8 | W 8 | W 8 | W 9 | W 9 | W 9 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 |
| kJ | — | 500 | 443 | 524 | 572 | 600 | 747 | 715 | 813 | 821 | 838 | 938 | 938 | 947 | 961 | 942 | 1026 | 1004 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 11 | 16 | 16 | 1836 | 1836 | 1836 | 1864 | 1864 | 1864 | 1836 | 1836 | 1836 | 1836 | 1836 | 2064 | 1907 | 1907 | 1836 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
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