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 2PM is: 0.5m 10s primary swell from a East direction (forecast issued at 09:00am July 20). An open ocean swell of 0.7m 7s is not directed at the surf break, a second open ocean swell of 0.4m 7s is not directed at the surf break. The wind direction is predicted to be cross-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 ForecastHeavy rain (total 29mm), heaviest during Wed night. Warm (max 29°C on Mon morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||||||||
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) | 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 | SW 7 | SW 7 | ENE 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 45 | 46 | 46 | 44 | 43 | 42 | 42 | 42 | 42 | 28 | 27 | 27 | 27 | 27 | 0 | 0 | 27 | 41 | 27 | 27 | 27 | 26 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-off | cross-off | glassy | glassy | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 12:04PM0.72m | 00:26AM0.90m | 1:30PM0.68m | 00:54AM0.88m | 3:12PM0.67m | |||||||||||||||||
Low Tide | 6:32AM0.43m | 5:50PM0.42m | 7:27AM0.37m | 6:26PM0.53m | 8:22AM0.32m | 7:07PM0.61m | ||||||||||||||||
 |  | | |  | |  | |  | | | | | | | | | | | | | | |
 | 6:01 | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:51 | — | — |
mm | 1 | — | — | — | 2 | 1 | — | — | — | — | — | — | 1 | — | — | 1 | — | — | 1 | 2 | 2 | 6 |
Temp °C | 27 | 28 | 29 | 29 | 27 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 27 | 27 | 26 | 26 | 28 | 28 | 28 | 27 | 26 |
Feels °C | 30 | 30 | 32 | 32 | 30 | 31 | 32 | 31 | 31 | 30 | 31 | 31 | 31 | 30 | 31 | 30 | 30 | 31 | 30 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | 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 | SW 7 | SW 7 | SW 7 | SW 7 | SSW 7 | SE 10 | SE 10 | SE 10 |
| kJ | 57 | 67 | 50 | 50 | 51 | 44 | 44 | 43 | 33 | 32 | 35 | 57 | 65 | 64 | 53 | 53 | 54 | 56 | 93 | 49 | 48 | 35 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 10 | E 10 | SSE 9 | SSE 9 | SSE 9 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | SE 11 | S 6 | S 6 | SE 11 | SE 10 | SE 10 | ENE 9 | ENE 9 | ENE 9 |
| kJ | 45 | 46 | 46 | 47 | 47 | 47 | 42 | 42 | 42 | 28 | 27 | 27 | 27 | 41 | 23 | 22 | 40 | 51 | 49 | 27 | 27 | 26 |
Swell 3 Height (m) Direction Period (s) | SSE 8 | SE 8 | NW 8 | E 9 | E 9 | E 9 | SE 9 | SE 9 | SE 9 | SE 9 | S 6 | SE 10 | SE 10 | ENE 9 | SE 11 | SE 11 | ENE 9 | E 9 | ENE 9 | ENE 5 | SE 17 | SE 16 |
| kJ | 12 | 16 | 15 | 44 | 43 | 42 | 21 | 21 | 21 | 22 | 12 | 34 | 36 | 27 | 41 | 41 | 27 | 41 | 27 | 3 | 11 | 42 |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSE 5 | SSE 7 | — | — | — | — | — | — | E 2 | E 3 | E 3 | E 4 | SE 4 | E 4 | E 4 | SSE 6 | S 6 | S 6 | SW 7 | SW 7 | SSW 6 |
| kJ | 6 | 10 | 20 | — | — | — | — | — | — | 1 | 3 | 5 | 6 | 12 | 2 | 2 | 27 | 22 | 22 | 77 | 102 | 113 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2075 | 20 | 15 | 15 | 15 | 15 | 15 | 15 | 0 | 1958 | 2258 | 11 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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