Surf Forecasts:
How big are the waves at Boat Basin Lefts today (17 Oct):
- Morning surf: Morning surf (17 Oct, local time) - 4.5ft (1.3m), 9s period with NE swell.
- Afternoon surf: Afternoon surf (17 Oct, local time) - 5.5ft (1.7m), 11s period with ENE swell.
- Evening surf: Evening surf (17 Oct, local time) - 10ft (3.0m), 12s period with E swell.
The current surf forecast for Boat Basin Lefts at 1AM is: 1.0m 10s primary swell from a East-northeast direction and 0.5m 10s secondary swell from a North direction (forecast issued at 09:00pm October 16). The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Oct) | 4.5ft (1.3m) | 9s |
| Afternoon (17 Oct) | 5.5ft (1.7m) | 11s |
| Evening (17 Oct) | 10ft (3.0m) | 12s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 141mm), heaviest during Sun morning. Warm (max 29°C on Sat morning, min 26°C on Sun afternoon). Winds increasing (light winds from the NNE on Fri night, extremely windy from the NNW by Sat night). | ||||||||||||||||||
Fri 16 | Saturday 17 | Sunday 18 | ||||||||||||||||
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 9 | ENE 10 | ENE 10 | NE 9 | ENE 9 | NE 9 | ENE 9 | ENE 11 | E 12 | E 12 | E 14 | E 14 | E 14 | NE 13 | E 12 | NE 10 | S 11 | W 11 |
Wave Graph  | ||||||||||||||||||
 kJ | 124 | 192 | 192 | 203 | 226 | 266 | 242 | 724 | 1406 | 2956 | 6330 | 8010 | 12315 | 28602 | 7134 | 696 | 0 | 835 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | off | off | cross-off | cross-off | cross-off |
High Tide | 9:43PM0.78m | 1:39PM0.77m | 10:16PM0.76m | 2:49PM0.77m | ||||||||||||||
Low Tide | 5:10PM0.67m | 5:35AM0.20m | 6:07PM0.69m | 6:27AM0.24m | 7:30PM0.69m | |||||||||||||
 | | |  |  | | |  |  | | | | | | | | | | |
 | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — |
mm | — | — | — | 2 | — | — | — | 4 | 6 | 2 | 2 | 7 | 26 | 11 | 45 | 11 | 2 | 4 |
Temp °C | 28 | 27 | 27 | 27 | 28 | 28 | 29 | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 |
Feels °C | 31 | 29 | 29 | 28 | 30 | 29 | 29 | 26 | 25 | 26 | 24 | 22 | 14 | 18 | 15 | 18 | 18 | 20 |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 10 | ENE 10 | NE 9 | ENE 9 | N 10 | ENE 9 | ENE 11 | E 12 | E 12 | E 14 | E 14 | E 14 | ENE 13 | E 12 | NE 10 | — | W 11 |
| kJ | 124 | 192 | 192 | 203 | 226 | 49 | 242 | 724 | 1406 | 2956 | 6330 | 8010 | 12315 | 10458 | 7134 | 696 | — | 835 |
Swell 2 Height (m) Direction Period (s) | N 10 | N 10 | N 10 | N 10 | N 10 | SE 9 | E 12 | SE 9 | SE 9 | — | — | — | — | — | NNE 10 | — | — | — |
| kJ | 49 | 48 | 48 | 50 | 49 | 14 | 42 | 14 | 14 | — | — | — | — | — | 4179 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SW 5 | SE 10 | — | — | — | — | — | — | — | SE 12 | — | — | — |
| kJ | 22 | 21 | 21 | 13 | 13 | 1 | 14 | — | — | — | — | — | — | — | 142 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NE 3 | — | — | — | NE 9 | N 10 | N 5 | NNE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 9 | NE 13 | SE 12 | SSE 11 | S 11 | S 11 |
| kJ | — | 2 | — | — | — | 266 | 151 | 80 | 398 | 517 | 946 | 1422 | 2883 | 28602 | 12485 | 19685 | 18708 | 12778 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 2069 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
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