Surf Forecasts:
How big are the waves at Boat Basin Lefts today (18 Aug):
- Afternoon surf: Afternoon surf (18 Aug, local time) - 3.5ft (1.1m), 8s period with W swell.
- Evening surf: Evening surf (18 Aug, local time) - 3.5ft (1.1m), 8s period with W swell.
The current surf forecast for Boat Basin Lefts at 11PM is: 1.0m 8s primary swell from a West direction (forecast issued at 03:00pm August 18). An open ocean swell of 0.4m 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 (18 Aug) | - | - |
| Afternoon (18 Aug) | 3.5ft (1.1m) | 8s |
| Evening (18 Aug) | 3.5ft (1.1m) | 8s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Warm (max 29°C on Tue afternoon, min 27°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||
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 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | W 8 | WNW 9 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 160 | 160 | 161 | 133 | 136 | 140 | 140 | 180 | 194 | 184 | 184 | 144 | 144 | 111 | 106 | 106 | 101 | 55 | 40 | 39 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross |
High Tide | 11:57AM0.74m | 11:17PM0.87m | 1:14PM0.71m | 11:43PM0.84m | 2:50PM0.69m | |||||||||||||||
Low Tide | 5:12PM0.52m | 6:29AM0.29m | 5:46PM0.59m | 7:21AM0.28m | 6:24PM0.65m | |||||||||||||||
 | |  | |  | |  | | |  | | |  | | | | | | | | |
 | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | 6:40 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:39 | — | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | 2 | — | — | — | — | — | — | — |
Temp °C | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 29 | 29 | 29 | 28 | 28 |
Feels °C | 32 | 31 | 31 | 31 | 31 | 30 | 29 | 30 | 30 | 31 | 31 | 32 | 33 | 31 | 32 | 33 | 31 | 31 | 31 | 33 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | W 8 | WNW 9 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | WSW 9 | WSW 9 | WSW 8 |
| kJ | 160 | 160 | 161 | 133 | 136 | 140 | 140 | 180 | 194 | 184 | 184 | 144 | 144 | 111 | 106 | 106 | 101 | 80 | 77 | 75 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SSE 9 | SE 9 | SSE 9 | SSE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | WSW 9 | NE 6 | WSW 8 | WSW 8 | WNW 8 | NE 6 | NNE 6 |
| kJ | 20 | 20 | 19 | 30 | 42 | 32 | 32 | 41 | 41 | 42 | 42 | 42 | 41 | 64 | 31 | 54 | 54 | 55 | 30 | 26 |
Swell 3 Height (m) Direction Period (s) | NNE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | WSW 8 | SE 9 | WSW 8 | NE 6 | NE 6 | SSE 9 | WNW 8 | WNW 8 |
| kJ | 15 | 20 | 20 | 20 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 24 | 41 | 38 | 17 | 15 | 31 | 40 | 39 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NW 3 | NW 3 | NNW 3 | NNW 3 | NNW 4 | NNW 5 | NE 3 | NE 3 | NE 8 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 1 | 5 | 4 | 6 | 13 | 14 | 1 | 4 | 42 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 11 | 2069 | 2069 | 11 | 11 | 2069 | 2069 | 1958 | 2069 | 2100 | 2092 | 2077 | 20 | 11 | 11 | 1304 | 1290 | 2064 | 24 | 20 |
Best forecast wave conditions in Guam | ||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Boat Basin Lefts surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest