Surf Forecasts:
How big are the waves at Boat Basin Lefts today (16 Sep):
- Morning surf: Morning surf (16 Sep, local time) - 3.5ft (1.0m), 9s period with NE swell.
- Afternoon surf: Afternoon surf (16 Sep, local time) - 3.5ft (1.1m), 9s period with NE swell.
- Evening surf: Evening surf (16 Sep, local time) - 4ft (1.2m), 9s period with NE swell.
The current surf forecast for Boat Basin Lefts at 3AM is: 0.7m 14s primary swell from a East-northeast direction and 1.0m 8s secondary swell from a Northeast direction (forecast issued at 09:00pm September 15). An open ocean swell of 0.7m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Sep) | 3.5ft (1.0m) | 9s |
| Afternoon (16 Sep) | 3.5ft (1.1m) | 9s |
| Evening (16 Sep) | 4ft (1.2m) | 9s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 30mm), heaviest during Wed morning. Warm (max 29°C on Wed morning, min 27°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | ||||||||||||||||
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) | NE 9 | NE 8 | ENE 14 | ENE 14 | ENE 14 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | ENE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 |
Wave Graph  | ||||||||||||||||||
 kJ | 170 | 142 | 183 | 183 | 178 | 155 | 176 | 241 | 235 | 230 | 138 | 105 | 102 | 84 | 118 | 102 | 86 | 86 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:47PM0.86m | 11:47AM0.78m | 10:11PM0.83m | 12:54PM0.75m | ||||||||||||||
Low Tide | 4:10PM0.54m | 4:50AM0.22m | 4:44PM0.60m | 5:34AM0.23m | 5:21PM0.64m | |||||||||||||
 | | |  |  | | | |  | | | |  | | |  | | | |
 | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:21 | — | — |
mm | — | — | — | — | 2 | 4 | 3 | 2 | 2 | 3 | 4 | 3 | — | — | 1 | — | — | 2 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 27 | 28 | 28 | 29 | 29 | 29 | 29 | 28 |
Feels °C | 32 | 32 | 31 | 31 | 30 | 31 | 31 | 31 | 30 | 31 | 30 | 30 | 30 | 31 | 30 | 30 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | NE 9 | NE 8 | NE 8 | NE 8 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | ENE 9 | NE 8 | NE 8 | SSW 7 | SSW 7 | SSW 8 | SW 8 | SSW 8 |
| kJ | 170 | 142 | 166 | 142 | 145 | 155 | 176 | 241 | 235 | 230 | 138 | 105 | 102 | 82 | 111 | 161 | 178 | 166 |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SW 8 | SW 8 | S 8 | S 7 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 |
| kJ | 92 | 90 | 68 | 67 | 62 | 72 | 53 | 80 | 80 | 80 | 80 | 69 | 78 | 84 | 118 | 102 | 86 | 86 |
Swell 3 Height (m) Direction Period (s) | ENE 13 | ENE 13 | ENE 14 | ENE 14 | ENE 14 | SW 8 | SW 8 | S 7 | S 7 | S 7 | S 8 | SSW 7 | S 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 |
| kJ | 93 | 131 | 183 | 183 | 178 | 58 | 60 | 51 | 37 | 33 | 42 | 45 | 58 | 45 | 45 | 42 | 28 | 41 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | W 2 | — | SW 8 | SW 8 | SSW 7 | SSW 7 | SW 8 | SW 8 | — | — | WSW 8 | — | — | — |
| kJ | — | — | — | — | 1 | — | 119 | 132 | 65 | 54 | 208 | 151 | — | — | 136 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 11 | 11 | 11 | 16 | 11 | 11 | 16 | 16 | 16 | 16 | 16 | 229 | 16 | 16 | 16 | 11 | 11 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
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