Surf Forecasts:
How big are the waves at Boat Basin Lefts today (20 Jul):
- Morning surf: Morning surf (20 Jul, local time) - 1.5ft (0.5m), 10s period with E swell.
- Afternoon surf: Afternoon surf (20 Jul, local time) - 1.5ft (0.5m), 9s period with E swell.
- Evening surf: Evening surf (20 Jul, local time) - 1.5ft (0.5m), 9s period with E swell.
The current surf forecast for Boat Basin Lefts at 1AM is: 0.5m 9s primary swell from a East direction (forecast issued at 09:00pm July 19). An open ocean swell of 0.8m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jul) | 1.5ft (0.5m) | 10s |
| Afternoon (20 Jul) | 1.5ft (0.5m) | 9s |
| Evening (20 Jul) | 1.5ft (0.5m) | 9s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 14mm), heaviest on Tue night. Warm (max 29°C on Mon morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | ||||||||||||||||
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 | E 9 | E 9 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 |
Wave Graph  | ||||||||||||||||||
 kJ | 41 | 41 | 42 | 45 | 45 | 46 | 46 | 44 | 43 | 42 | 42 | 42 | 42 | 28 | 27 | 27 | 27 | 27 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | off | off | off | off | off | cross-off | cross-off | cross-off | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:58PM0.92m | 12:04PM0.72m | 00:26AM0.90m | 1:30PM0.68m | ||||||||||||||
Low Tide | 5:13PM0.31m | 6:32AM0.43m | 5:50PM0.42m | 7:27AM0.37m | 6:26PM0.53m | |||||||||||||
 |  | | |  | | | | |  | | |  | |  | | | | |
 | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:51 | — | — |
mm | 1 | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | 1 | 2 | 2 | 3 |
Temp °C | 28 | 28 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 27 | 27 |
Feels °C | 33 | 33 | 31 | 31 | 30 | 31 | 32 | 32 | 32 | 31 | 32 | 32 | 31 | 31 | 32 | 32 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | WSW 7 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | SW 8 | SW 7 | SW 7 |
| kJ | 36 | 38 | 51 | 54 | 65 | 67 | 50 | 50 | 51 | 44 | 44 | 43 | 33 | 33 | 35 | 46 | 56 | 54 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | SSE 9 | SSE 9 | SSE 9 | E 9 | E 9 | E 9 | SSE 9 | ENE 9 | ENE 9 | ENE 9 | SE 11 |
| kJ | 41 | 41 | 42 | 45 | 45 | 46 | 46 | 47 | 47 | 32 | 42 | 42 | 42 | 33 | 27 | 27 | 27 | 41 |
Swell 3 Height (m) Direction Period (s) | S 5 | SE 9 | SE 8 | SE 10 | SE 8 | SE 8 | SSE 7 | E 9 | E 9 | E 9 | SE 9 | SE 9 | SE 9 | ENE 9 | SE 10 | SE 10 | SE 10 | ENE 9 |
| kJ | 5 | 21 | 17 | 23 | 15 | 16 | 18 | 44 | 43 | 42 | 21 | 21 | 21 | 28 | 33 | 35 | 37 | 27 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ENE 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1996 | 1875 | 26 | 20 | 15 | 15 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
Header Global | ||||||||||||||||||
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Live Wave Height (m)
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Ocean Swells (m)- Wind Speed (km/h)
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