Surf Forecasts:
How big are the waves at Boat Basin Lefts today (18 Jul):
- Morning surf: Morning surf (18 Jul, local time) - 1.5ft (0.5m), 9s period with E swell.
- Afternoon surf: Afternoon surf (18 Jul, local time) - 1.5ft (0.5m), 9s period with E swell.
- Evening surf: Evening surf (18 Jul, local time) - 1.5ft (0.5m), 9s period with E swell.
The current surf forecast for Boat Basin Lefts at 6PM is: 0.5m 9s primary swell from a East direction (forecast issued at 09:00am July 18). An open ocean swell of 0.8m 7s is not directed at the surf break, a second open ocean swell of 0.3m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Jul) | 1.5ft (0.5m) | 9s |
| Afternoon (18 Jul) | 1.5ft (0.5m) | 9s |
| Evening (18 Jul) | 1.5ft (0.5m) | 9s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 9mm), mostly falling on Sat night. Warm (max 29°C on Sat morning, min 27°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | ||||||||||||||||||||
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) | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 43 | 42 | 42 | 42 | 42 | 42 | 41 | 27 | 27 | 41 | 41 | 41 | 41 | 41 | 43 | 45 | 46 | 46 | 46 | 44 | 43 | 42 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | glassy | off | off | off | off | off | off |
High Tide | 9:45AM0.84m | 11:30PM0.93m | 10:51AM0.78m | 11:58PM0.92m | 12:04PM0.72m | |||||||||||||||||
Low Tide | 4:41AM0.56m | 4:34PM0.19m | 5:36AM0.49m | 5:13PM0.31m | 6:32AM0.43m | 5:50PM0.42m | ||||||||||||||||
 | | |  |  |  | | | | |  | | | | | | | | | | | | |
 | 6:01 | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — |
 | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:51 | — | — |
mm | — | — | — | 1 | 1 | — | 1 | 1 | 3 | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 28 |
Feels °C | 30 | 30 | 31 | 31 | 31 | 32 | 30 | 30 | 31 | 33 | 32 | 32 | 31 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | E 9 | WSW 7 | E 9 | WSW 7 | WSW 7 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 |
| kJ | 43 | 79 | 42 | 58 | 58 | 56 | 41 | 41 | 30 | 30 | 30 | 29 | 49 | 55 | 55 | 55 | 55 | 57 | 69 | 59 | 53 | 62 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | E 9 | SSE 7 | E 9 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 |
| kJ | 5 | 42 | 10 | 42 | 42 | 42 | 41 | 27 | 27 | 41 | 41 | 41 | 41 | 41 | 43 | 45 | 46 | 46 | 46 | 44 | 43 | 42 |
Swell 3 Height (m) Direction Period (s) | S 4 | SSE 7 | NNW 7 | SSE 7 | NNW 6 | NNW 6 | NNW 6 | S 6 | S 6 | S 6 | S 5 | S 5 | S 6 | SE 9 | SE 8 | SE 10 | SSE 8 | SE 9 | NW 8 | NW 8 | SE 9 | SE 9 |
| kJ | 1 | 10 | 4 | 5 | 4 | 4 | 4 | 12 | 12 | 11 | 8 | 8 | 6 | 21 | 17 | 23 | 13 | 19 | 15 | 14 | 21 | 21 |
Wind waves Height (m) Direction Period (s) | WSW 7 | — | WSW 7 | S 5 | S 6 | S 6 | SSW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 77 | — | 85 | 4 | 12 | 7 | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 229 | 229 | 229 | 229 | 16 | 229 | 11 | 11 | 16 | 11 | 16 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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