Surf Forecasts:
How big are the waves at Boat Basin Lefts today (04 Sep):
- Morning surf: Morning surf (04 Sep, local time) - 7ft (2.2m), 9s period with W swell.
- Afternoon surf: Afternoon surf (04 Sep, local time) - 6.5ft (2.0m), 9s period with W swell.
- Evening surf: Evening surf (04 Sep, local time) - 6ft (1.8m), 9s period with W swell.
The current surf forecast for Boat Basin Lefts at 3AM is: 2.4m 9s primary swell from a West direction and 0.4m 9s secondary swell from a Northeast direction (forecast issued at 09:00pm September 03). An open ocean swell of 0.2m 7s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 Sep) | 7ft (2.2m) | 9s |
| Afternoon (04 Sep) | 6.5ft (2.0m) | 9s |
| Evening (04 Sep) | 6ft (1.8m) | 9s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 30mm), heaviest during Sat night. Warm (max 29°C on Fri morning, min 26°C on Sat night). Winds decreasing (fresh winds from the SW on Thu night, light winds from the N by Sat night). | ||||||||||||||||||
Thu 3 | Friday 4 | Saturday 5 | ||||||||||||||||
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) | WNW 11 | WNW 11 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | WNW 9 | WNW 8 | W 8 |
Wave Graph  | ||||||||||||||||||
 kJ | 626 | 572 | 919 | 1005 | 899 | 803 | 649 | 649 | 561 | 505 | 450 | 455 | 404 | 412 | 355 | 297 | 246 | 200 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 11:08PM0.88m | 2:25PM0.75m | 11:51PM0.87m | 4:09PM0.77m | ||||||||||||||
Low Tide | 5:32PM0.62m | 6:50AM0.18m | 6:28PM0.68m | 7:58AM0.15m | 7:54PM0.72m | |||||||||||||
 | | | |  | | | |  | | | | |  | | | |  | |
 | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — | — |
mm | 2 | 2 | 2 | 1 | — | — | — | — | — | — | 1 | 1 | — | 2 | 1 | — | 3 | 9 |
Temp °C | 28 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 |
Feels °C | 29 | 27 | 28 | 28 | 28 | 29 | 29 | 30 | 29 | 30 | 30 | 30 | 31 | 32 | 31 | 32 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WNW 11 | NE 9 | NE 9 | NE 8 | W 9 | SE 7 | SE 8 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | WNW 9 | WNW 8 | W 8 |
| kJ | 626 | 572 | 28 | 20 | 11 | 803 | 14 | 16 | 561 | 505 | 450 | 455 | 404 | 412 | 355 | 297 | 246 | 200 |
Swell 2 Height (m) Direction Period (s) | NE 9 | NE 9 | SSE 7 | SSE 7 | SE 9 | SE 8 | NE 8 | NE 10 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 8 | SSE 8 | SE 10 | SE 10 | SE 10 |
| kJ | 29 | 28 | 5 | 5 | 12 | 15 | 11 | 15 | 18 | 18 | 18 | 18 | 18 | 26 | 22 | 48 | 61 | 61 |
Swell 3 Height (m) Direction Period (s) | SSE 8 | SE 9 | E 9 | ESE 9 | E 9 | NE 8 | E 9 | ESE 11 | ENE 9 | ESE 11 | ESE 11 | SE 10 | SE 10 | SE 10 | SE 10 | ENE 9 | ENE 9 | ENE 8 |
| kJ | 6 | 12 | 6 | 8 | 6 | 11 | 6 | 12 | 8 | 11 | 11 | 17 | 17 | 25 | 25 | 16 | 15 | 14 |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 6 | W 9 | W 9 | W 9 | S 6 | W 9 | W 9 | — | — | — | — | — | — | — | — | — | — |
| kJ | 136 | 171 | 919 | 1005 | 899 | 33 | 649 | 649 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 229 | 229 | 1836 | 1836 | 1836 | 1836 | 2069 | 16 | 16 | 231 | 16 | 16 | 11 | 11 | 11 | 11 | 11 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
Header Global | ||||||||||||||||||
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