Surf Forecasts:
How big are the waves at Boat Basin Lefts today (19 Aug):
- Morning surf: Morning surf (19 Aug, local time) - 3ft (0.9m), 8s period with W swell.
- Afternoon surf: Afternoon surf (19 Aug, local time) - 3ft (0.9m), 8s period with W swell.
- Evening surf: Evening surf (19 Aug, local time) - 3ft (0.9m), 8s period with W swell.
The current surf forecast for Boat Basin Lefts at 3PM is: 0.9m 8s primary swell from a West direction and 1.0m 5s secondary swell from a North direction (forecast issued at 09:00am August 19). An open ocean swell of 0.5m 9s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Aug) | 3ft (0.9m) | 8s |
| Afternoon (19 Aug) | 3ft (0.9m) | 8s |
| Evening (19 Aug) | 3ft (0.9m) | 8s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Warm (max 30°C on Thu morning, min 27°C on Fri night). Winds decreasing (fresh winds from the N on Wed morning, calm by Fri afternoon). | ||||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||||||||
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) | W 8 | W 8 | W 8 | W 9 | W 8 | W 8 | W 9 | WNW 8 | W 9 | W 9 | WNW 8 | NE 6 | NE 6 | NE 6 | NE 7 | NE 7 | NE 7 | NE 7 | E 13 | E 11 | E 10 | E 10 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 113 | 116 | 116 | 119 | 116 | 113 | 96 | 73 | 78 | 78 | 55 | 47 | 58 | 51 | 43 | 44 | 44 | 44 | 115 | 127 | 98 | 122 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | glassy | off | off |
High Tide | 1:14PM0.71m | 11:43PM0.84m | 2:50PM0.69m | 00:13AM0.82m | 4:40PM0.70m | |||||||||||||||||
Low Tide | 6:29AM0.29m | 5:46PM0.59m | 7:21AM0.28m | 6:24PM0.65m | 8:19AM0.26m | 7:23PM0.69m | ||||||||||||||||
 |  | |  |  |  | | | | | | |  | | | | | | | | | | |
 | 6:07 | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:38 | — | — |
mm | 1 | — | — | — | — | 1 | 1 | 2 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 30 | 30 | 28 | 28 | 28 | 28 | 28 | 29 | 30 | 30 | 29 | 28 |
Feels °C | 28 | 28 | 29 | 30 | 30 | 31 | 32 | 32 | 32 | 32 | 33 | 33 | 31 | 32 | 32 | 32 | 32 | 32 | 34 | 35 | 34 | 32 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | W 9 | W 8 | W 8 | W 9 | WNW 8 | NE 6 | W 9 | WSW 9 | NE 6 | NE 6 | NE 6 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | E 11 | E 10 | E 10 |
| kJ | 113 | 116 | 116 | 119 | 116 | 113 | 96 | 73 | 54 | 78 | 82 | 47 | 58 | 51 | 43 | 44 | 44 | 44 | 47 | 127 | 98 | 122 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | WSW 9 | W 9 | WSW 8 | NNE 7 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | E 13 | NE 7 | NE 7 | SSE 9 |
| kJ | 32 | 32 | 41 | 42 | 43 | 42 | 41 | 47 | 78 | 39 | 34 | 80 | 77 | 77 | 57 | 53 | 53 | 38 | 115 | 35 | 36 | 59 |
Swell 3 Height (m) Direction Period (s) | NE 8 | E 9 | E 9 | E 9 | E 9 | E 9 | WSW 8 | SE 9 | WSW 8 | SSE 9 | WNW 8 | WNW 8 | WNW 8 | W 8 | W 8 | WNW 8 | SSE 8 | W 9 | WSW 8 | WSW 8 | SSE 8 | NNE 6 |
| kJ | 18 | 14 | 14 | 14 | 14 | 14 | 12 | 41 | 38 | 32 | 55 | 40 | 40 | 35 | 34 | 24 | 28 | 41 | 37 | 37 | 27 | 27 |
Wind waves Height (m) Direction Period (s) | NW 4 | NNW 4 | N 4 | N 5 | NNE 5 | NNE 5 | NNE 5 | NE 6 | — | NE 6 | ENE 6 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 15 | 31 | 41 | 43 | 38 | 39 | 36 | 47 | — | 46 | 23 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 1958 | 2069 | 2069 | 1290 | 2092 | 2077 | 2074 | 0 | 1958 | 2074 | 1290 | 2070 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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