Surf Forecasts:
How big are the waves at Boat Basin Lefts today (21 Jul):
- Morning surf: Morning surf (21 Jul, local time) - 1.5ft (0.4m), 9s period with ENE swell.
- Afternoon surf: Afternoon surf (21 Jul, local time) - 1.5ft (0.4m), 9s period with ENE swell.
- Evening surf: Evening surf (21 Jul, local time) - 1.5ft (0.4m), 9s period with ENE swell.
The current surf forecast for Boat Basin Lefts at 2AM is: 0.5m 9s primary swell from a East direction (forecast issued at 09:00pm July 20). An open ocean swell of 0.7m 7s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jul) | 1.5ft (0.4m) | 9s |
| Afternoon (21 Jul) | 1.5ft (0.4m) | 9s |
| Evening (21 Jul) | 1.5ft (0.4m) | 9s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 26mm), heaviest during Wed night. Warm (max 29°C on Tue morning, min 27°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||||
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) | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 |
Wave Graph  | ||||||||||||||||||
 kJ | 43 | 43 | 42 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-off | cross-off | off | off | off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross-on | cross-on |
High Tide | 00:26AM0.90m | 1:30PM0.68m | 00:54AM0.88m | 3:12PM0.67m | ||||||||||||||
Low Tide | 5:50PM0.42m | 7:27AM0.37m | 6:26PM0.53m | 8:22AM0.32m | 7:07PM0.61m | |||||||||||||
 |  | | |  | |  | | |  | | |  | | | | | | |
 | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:51 | — | — |
mm | 1 | — | — | 1 | — | — | 1 | 1 | 1 | — | 1 | — | — | — | 1 | 1 | 3 | 6 |
Temp °C | 28 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 29 | 27 | 27 |
Feels °C | 31 | 31 | 32 | 31 | 31 | 30 | 31 | 31 | 31 | 30 | 30 | 31 | 31 | 31 | 30 | 31 | 29 | 31 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 |
| kJ | 44 | 44 | 44 | 43 | 32 | 32 | 35 | 56 | 64 | 53 | 41 | 69 | 75 | 91 | 91 | 94 | 104 | 107 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | E 9 | ENE 9 | ENE 9 | SSE 6 | S 6 | ENE 9 | ENE 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 |
| kJ | 47 | 47 | 42 | 28 | 28 | 13 | 19 | 27 | 27 | 41 | 41 | 41 | 40 | 37 | 49 | 49 | 48 | 48 |
Swell 3 Height (m) Direction Period (s) | E 9 | E 9 | S 5 | S 5 | S 5 | ENE 9 | ENE 9 | SE 10 | SE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 |
| kJ | 43 | 43 | 8 | 8 | 8 | 28 | 27 | 35 | 36 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 |
Wind waves Height (m) Direction Period (s) | S 3 | — | — | — | — | — | ESE 2 | S 6 | S 6 | S 6 | — | — | — | — | — | — | — | — |
| kJ | 3 | — | — | — | — | — | 1 | 19 | 19 | 18 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 24 | 1898 | 1898 | 26 | 2253 | 16 | 2075 | 11 | 11 | 11 | 229 | 229 | 229 | 16 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
Header Global | ||||||||||||||||||
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