Surf Forecasts:
How big are the waves at Boat Basin Lefts today (30 Jul):
- Morning surf: Morning surf (30 Jul, local time) - 1.5ft (0.5m), 9s period with ENE swell.
- Afternoon surf: Afternoon surf (30 Jul, local time) - 1.5ft (0.4m), 9s period with ENE swell.
- Evening surf: Evening surf (30 Jul, local time) - 1.5ft (0.4m), 8s period with ENE swell.
The current surf forecast for Boat Basin Lefts at 5PM is: 0.4m 9s primary swell from a East-northeast direction (forecast issued at 09:00am July 30). An open ocean swell of 0.5m 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 (30 Jul) | 1.5ft (0.5m) | 9s |
| Afternoon (30 Jul) | 1.5ft (0.4m) | 9s |
| Evening (30 Jul) | 1.5ft (0.4m) | 8s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 35mm), heaviest during Sat night. Warm (max 30°C on Thu morning, min 27°C on Thu night). Winds increasing (calm on Thu night, fresh winds from the W by Sat night). | ||||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | ||||||||||||||||||||
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 | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | ENE 7 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 15 | ENE 18 | E 17 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | ENE 14 | E 14 | ENE 16 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 18 | 43 | 30 | 30 | 28 | 28 | 27 | 26 | 26 | 22 | 42 | 102 | 142 | 318 | 447 | 522 | 713 | 713 | 684 | 704 | 474 | 917 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | glassy | glassy | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:53AM0.85m | 9:40PM0.86m | 7:39AM0.85m | 10:03PM0.88m | 8:26AM0.83m | |||||||||||||||||
Low Tide | 2:19PM0.11m | 2:45AM0.63m | 2:52PM0.14m | 3:26AM0.59m | 3:25PM0.19m | |||||||||||||||||
 | | | |  |  | | | | |  | | | | | | | | | | | | |
 | 6:05 | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:49 | — | — |
mm | — | — | — | — | 1 | — | — | — | — | — | 1 | 2 | 3 | 3 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 |
Temp °C | 27 | 29 | 30 | 30 | 29 | 28 | 27 | 27 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 29 | 28 | 28 | 28 | 28 |
Feels °C | 31 | 33 | 33 | 33 | 34 | 33 | 32 | 31 | 32 | 32 | 31 | 31 | 30 | 31 | 31 | 30 | 31 | 31 | 28 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | ENE 9 | ENE 9 | S 7 | ENE 8 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | E 14 | E 14 | E 14 | ENE 14 | E 14 | ENE 16 |
| kJ | 17 | 43 | 30 | 23 | 28 | 19 | 35 | 52 | 54 | 65 | 65 | 79 | 94 | 127 | 147 | 176 | 713 | 713 | 684 | 704 | 474 | 917 |
Swell 2 Height (m) Direction Period (s) | ENE 7 | SSW 6 | S 7 | ENE 9 | SW 6 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 17 | E 16 | E 15 | E 15 | SW 8 | SW 8 | SW 7 | NNE 9 | ENE 18 | NNE 9 |
| kJ | 18 | 12 | 15 | 30 | 10 | 28 | 27 | 26 | 26 | 22 | 22 | 22 | 142 | 318 | 447 | 522 | 181 | 164 | 160 | 17 | 246 | 16 |
Swell 3 Height (m) Direction Period (s) | SSW 6 | SSE 7 | NNE 10 | SW 6 | S 7 | SE 8 | SE 8 | S 7 | SSE 6 | SSE 7 | ENE 15 | ENE 18 | ENE 8 | ENE 8 | ENE 19 | ENE 18 | SE 9 | NNE 9 | NNE 9 | SE 9 | NNE 9 | SE 9 |
| kJ | 12 | 15 | 20 | 10 | 15 | 17 | 17 | 17 | 12 | 15 | 42 | 102 | 22 | 22 | 119 | 110 | 13 | 17 | 17 | 12 | 17 | 12 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 7 | WSW 7 | WSW 8 | WSW 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 242 | 183 | 213 | 314 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 16 | 0 | 0 | 11 | 11 | 11 | 11 | 11 | 11 | 229 | 16 | 16 | 16 | 11 | 11 | 11 | 16 | 16 | 1908 | 1908 | 1905 | 1866 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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