Surf Forecasts:
How big are the waves at Boat Basin Lefts today (04 Oct):
- Morning surf: Morning surf (04 Oct, local time) - 3.5ft (1.1m), 10s period with N swell.
- Afternoon surf: Afternoon surf (04 Oct, local time) - 4ft (1.2m), 10s period with N swell.
- Evening surf: Evening surf (04 Oct, local time) - 4ft (1.2m), 11s period with N swell.
The current surf forecast for Boat Basin Lefts at 12AM is: 1.3m 10s primary swell from a North-northwest direction and 0.3m 16s secondary swell from a East-northeast direction (forecast issued at 09:00pm October 03). An open ocean swell of 4.0m 9s 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 Oct) | 3.5ft (1.1m) | 10s |
| Afternoon (04 Oct) | 4ft (1.2m) | 10s |
| Evening (04 Oct) | 4ft (1.2m) | 11s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 33mm), heaviest during Tue afternoon. Warm (max 28°C on Sat night, min 27°C on Sat night). Winds decreasing (strong winds from the SW on Sat night, moderate winds from the WSW by Tue afternoon). | ||||||||||||||||||
Sat 3 | Sunday 4 | Monday 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) | NNW 10 | NNW 10 | NNW 10 | NNW 10 | N 10 | N 10 | N 10 | N 10 | N 10 | N 11 | N 11 | N 11 | N 11 | N 11 | N 11 | N 11 | N 11 | N 11 |
Wave Graph  | ||||||||||||||||||
 kJ | 308 | 436 | 326 | 260 | 204 | 250 | 308 | 308 | 308 | 326 | 389 | 382 | 382 | 388 | 466 | 483 | 553 | 556 |
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 | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 11:24PM0.83m | 3:43PM0.82m | 00:39AM0.80m | 4:41PM0.84m | ||||||||||||||
Low Tide | 6:54PM0.72m | 7:34AM0.14m | 8:32PM0.71m | 8:45AM0.17m | 9:59PM0.67m | |||||||||||||
 | | | |  | | | | |  | | |  | | | | | | |
 | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:08 | — | — | — | — | — | — | — | 6:07 | — | — |
mm | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | 1 | 1 | 2 | 1 | 1 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 26 | 26 | 24 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 27 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NNW 10 | NNW 10 | NNW 10 | N 10 | N 10 | N 10 | N 10 | N 10 | N 11 | N 11 | N 11 | N 11 | N 11 | N 11 | N 11 | N 11 | N 11 |
| kJ | 308 | 436 | 326 | 260 | 204 | 250 | 308 | 308 | 308 | 326 | 389 | 382 | 382 | 388 | 466 | 483 | 553 | 556 |
Swell 2 Height (m) Direction Period (s) | SE 10 | ENE 15 | ENE 16 | SE 10 | NW 8 | NW 8 | ENE 15 | E 14 | E 14 | E 14 | E 14 | NW 7 | E 13 | E 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 |
| kJ | 16 | 45 | 50 | 34 | 115 | 78 | 71 | 107 | 106 | 103 | 100 | 52 | 89 | 87 | 57 | 55 | 50 | 49 |
Swell 3 Height (m) Direction Period (s) | ENE 16 | SE 10 | SE 10 | ENE 16 | ENE 15 | ENE 15 | SE 9 | SE 10 | SE 9 | SE 9 | SE 9 | E 13 | SE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 |
| kJ | 50 | 16 | 15 | 83 | 45 | 74 | 13 | 14 | 13 | 13 | 30 | 90 | 31 | 35 | 33 | 24 | 24 | 33 |
Wind waves Height (m) Direction Period (s) | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | WSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 |
| kJ | 2419 | 2176 | 2150 | 1991 | 1696 | 1486 | 1435 | 1235 | 1097 | 946 | 868 | 755 | 754 | 675 | 727 | 727 | 784 | 767 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 1908 | 1958 | 2100 | 1905 | 1905 | 1958 | 1958 | 1958 | 2270 | 2076 | 1905 | 1837 | 1836 | 1858 | 1836 | 1836 | 1905 | 2055 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
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