Surf Forecasts:
How big are the waves at Boat Basin Lefts today (23 Aug):
- Morning surf: Morning surf (23 Aug, local time) - 4ft (1.2m), 10s period with N swell.
- Afternoon surf: Afternoon surf (23 Aug, local time) - 4.5ft (1.3m), 11s period with N swell.
- Evening surf: Evening surf (23 Aug, local time) - 3.5ft (1.1m), 10s period with N swell.
The current surf forecast for Boat Basin Lefts at 4PM is: 1.3m 11s primary swell from a North direction (forecast issued at 09:00am August 23). An open ocean swell of 1.1m 8s is not directed at the surf break, a second open ocean swell of 1.6m 8s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Aug) | 4ft (1.2m) | 10s |
| Afternoon (23 Aug) | 4.5ft (1.3m) | 11s |
| Evening (23 Aug) | 3.5ft (1.1m) | 10s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 49mm), heaviest during Mon night. Warm (max 29°C on Sun morning, min 25°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||||||||
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) | NNE 10 | N 10 | N 11 | N 11 | N 10 | N 10 | N 11 | N 11 | N 10 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 300 | 284 | 375 | 379 | 305 | 249 | 274 | 229 | 225 | 210 | 167 | 161 | 176 | 138 | 133 | 101 | 141 | 139 | 137 | 135 | 133 | 131 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross | cross | cross | cross | cross-off | cross-off | cross | cross | cross-off | cross-off | cross | cross | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:41PM0.76m | 2:57AM0.78m | 7:12PM0.79m | 4:06AM0.79m | 7:38PM0.81m | |||||||||||||||||
Low Tide | 10:19AM0.22m | 10:36PM0.71m | 11:11AM0.20m | 11:37PM0.69m | 11:57AM0.17m | |||||||||||||||||
 | | | |  | |  |  | |  | |  | | | | |  | | | | | | |
 | 6:07 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | 1 | 1 | 1 | 3 | — | — | 4 | 8 | 3 | — | — | — | 1 | 1 | 5 | 10 | 1 | — | — | — | 1 | 6 |
Temp °C | 28 | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 29 | 29 | 29 | 28 | 28 | 27 | 25 | 26 | 27 | 28 | 28 | 28 | 27 |
Feels °C | 30 | 31 | 30 | 30 | 29 | 30 | 29 | 30 | 29 | 31 | 30 | 30 | 30 | 31 | 30 | 28 | 29 | 29 | 29 | 29 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | N 10 | N 11 | N 11 | N 10 | N 10 | SSE 8 | SSE 9 | SSE 8 | NNW 11 | NNW 11 | NNW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 8 |
| kJ | 224 | 284 | 375 | 379 | 305 | 249 | 160 | 168 | 137 | 210 | 167 | 161 | 815 | 832 | 772 | 651 | 528 | 426 | 320 | 256 | 206 | 168 |
Swell 2 Height (m) Direction Period (s) | NNE 10 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | N 11 | N 11 | N 10 | ENE 12 | SSE 8 | SSE 8 | NNW 11 | NNW 11 | NNW 11 | S 7 | NNW 11 | NNW 11 | ENE 13 | ENE 13 | ENE 13 | NW 11 |
| kJ | 300 | 138 | 177 | 177 | 177 | 177 | 274 | 229 | 225 | 46 | 79 | 58 | 176 | 138 | 133 | 52 | 76 | 78 | 137 | 135 | 133 | 104 |
Swell 3 Height (m) Direction Period (s) | SSE 9 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | NNE 10 | WSW 11 | SE 9 | SSE 8 | SSE 8 | S 7 | NNW 11 | ENE 13 | ENE 13 | NNW 11 | NNW 11 | NNW 11 | ENE 13 |
| kJ | 138 | 30 | 29 | 29 | 50 | 50 | 48 | 47 | 46 | 9 | 156 | 41 | 45 | 44 | 33 | 101 | 141 | 139 | 78 | 76 | 75 | 131 |
Wind waves Height (m) Direction Period (s) | — | SSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 9 | SSW 9 | SW 8 | WSW 10 | SW 9 | — | — | — | — | — | — | — | — | — |
| kJ | — | 315 | 381 | 346 | 341 | 341 | 319 | 306 | 354 | 577 | 308 | 703 | 197 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 1836 | 1836 | 229 | 229 | 2069 | 2074 | 1836 | 0 | 1839 | 1836 | 1958 | 229 | 229 | 1866 | 11 | 3 | 0 | 1836 | 16 | 11 | 16 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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