Surf Forecasts:
How big are the waves at Boat Basin Lefts today (15 Sep):
- Afternoon surf: Afternoon surf (15 Sep, local time) - 2.5ft (0.7m), 13s period with ENE swell.
- Evening surf: Evening surf (15 Sep, local time) - 3.5ft (1.0m), 8s period with NE swell.
The current surf forecast for Boat Basin Lefts at 7PM is: 1.1m 9s primary swell from a Northeast direction (forecast issued at 03:00pm September 15). An open ocean swell of 0.8m 8s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Sep) | - | - |
| Afternoon (15 Sep) | 2.5ft (0.7m) | 13s |
| Evening (15 Sep) | 3.5ft (1.0m) | 8s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 30mm), heaviest during Wed night. Warm (max 29°C on Tue afternoon, min 27°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | ||||||||||||||||||
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) | ENE 13 | NE 9 | NE 9 | NE 8 | ENE 14 | ENE 14 | ENE 14 | NE 9 | ENE 13 | 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 | 181 | 148 | 170 | 142 | 183 | 236 | 178 | 155 | 195 | 216 | 211 | 179 | 135 | 139 | 136 | 118 | 120 | 86 | 84 | 84 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:48AM0.81m | 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 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:21 | — | — |
mm | 1 | 2 | — | — | — | — | 1 | 2 | 1 | 2 | 3 | 5 | 2 | 6 | 1 | — | — | — | — | — |
Temp °C | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 29 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 29 | 29 | 29 |
Feels °C | 32 | 32 | 32 | 32 | 31 | 31 | 30 | 29 | 28 | 30 | 30 | 31 | 30 | 29 | 28 | 29 | 29 | 31 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | NE 9 | NE 9 | 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 | NE 8 | NE 8 | NE 8 | SW 8 | SSW 8 |
| kJ | 152 | 148 | 170 | 142 | 166 | 142 | 145 | 155 | 176 | 216 | 211 | 179 | 135 | 139 | 136 | 118 | 120 | 86 | 260 | 224 |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SW 8 | SW 8 | SW 8 | SW 8 | SSW 7 | SSW 7 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 8 | WSW 8 | ENE 12 | NE 8 | NE 8 |
| kJ | 94 | 96 | 94 | 87 | 68 | 69 | 48 | 58 | 60 | 67 | 57 | 98 | 54 | 54 | 45 | 44 | 27 | 57 | 84 | 84 |
Swell 3 Height (m) Direction Period (s) | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 14 | ENE 14 | ENE 14 | S 8 | ENE 13 | SW 8 | SW 8 | S 7 | S 7 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | SE 8 | ENE 12 | WSW 8 |
| kJ | 181 | 137 | 93 | 131 | 183 | 236 | 178 | 55 | 195 | 66 | 54 | 37 | 38 | 93 | 59 | 58 | 57 | 17 | 56 | 47 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | WSW 2 | W 3 | WSW 8 | WSW 8 | SW 8 | WSW 4 | SW 7 | SW 7 | SW 7 | SW 8 | SW 8 | — | — |
| kJ | — | — | — | — | — | — | — | 1 | 1 | 117 | 140 | 154 | 12 | 88 | 135 | 135 | 215 | 284 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 11 | 11 | 11 | 11 | 11 | 11 | 16 | 11 | 16 | 16 | 16 | 16 | 11 | 229 | 229 | 229 | 1864 | 16 | 16 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||
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