Surf Forecasts:
How big are the waves at Boat Basin Lefts today (17 Aug):
- Afternoon surf: Afternoon surf (17 Aug, local time) - 4.5ft (1.3m), 8s period with W swell.
- Evening surf: Evening surf (17 Aug, local time) - 4.5ft (1.3m), 8s period with W swell.
The current surf forecast for Boat Basin Lefts at 9PM is: 1.3m 8s primary swell from a West direction and 0.4m 9s secondary swell from a Northeast direction (forecast issued at 03:00pm August 17). The wind direction is predicted to be onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | - | - |
| Afternoon (17 Aug) | 4.5ft (1.3m) | 8s |
| Evening (17 Aug) | 4.5ft (1.3m) | 8s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 13mm), heaviest on Mon afternoon. Warm (max 30°C on Thu morning, min 27°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||||
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 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | WNW 9 | W 8 | W 8 | W 8 | W 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 202 | 207 | 212 | 212 | 212 | 181 | 185 | 190 | 160 | 160 | 160 | 133 | 136 | 140 | 147 | 189 | 143 | 143 | 143 | 146 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | glassy | glassy | glassy | glassy | on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 10:51AM0.79m | 10:52PM0.89m | 11:57AM0.74m | 11:17PM0.87m | 1:14PM0.71m | |||||||||||||||
Low Tide | 4:38PM0.43m | 5:41AM0.32m | 5:12PM0.52m | 6:29AM0.29m | 5:46PM0.59m | |||||||||||||||
 | |  |  | | | |  |  | | |  | | | | | | | | | |
 | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | 6:42 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:39 | — | — |
mm | 1 | 2 | 1 | — | — | 2 | 1 | — | — | 1 | — | — | — | — | 2 | 1 | 1 | — | — | — |
Temp °C | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 |
Feels °C | 31 | 30 | 32 | 33 | 33 | 32 | 32 | 34 | 33 | 33 | 32 | 31 | 30 | 30 | 29 | 30 | 30 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | WNW 9 | W 8 | W 8 | W 8 | W 9 |
| kJ | 202 | 207 | 212 | 212 | 212 | 181 | 185 | 190 | 160 | 160 | 160 | 133 | 136 | 140 | 147 | 189 | 143 | 143 | 143 | 146 |
Swell 2 Height (m) Direction Period (s) | NE 10 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 |
| kJ | 23 | 22 | 22 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 19 | 41 | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 42 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | SE 9 | NNE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | E 9 | E 9 |
| kJ | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 21 | 15 | 20 | 20 | 20 | 19 | 18 | 18 | 18 | 18 | 18 | 14 | 14 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | NNW 2 | NNW 2 | NNW 3 | NNW 3 | N 3 | NNW 4 | N 5 | N 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 6 | 8 | 17 | 34 | 51 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 229 | 229 | 229 | 2077 | 0 | 0 | 0 | 0 | 11 | 16 | 16 | 11 | 11 | 2069 | 2069 | 2069 | 2069 | 2460 | 2083 | 2067 |
Best forecast wave conditions in Guam | ||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||
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