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 (0.4m), 9s period with ENE swell.
- Evening surf: Evening surf (18 Jul, local time) - 1.5ft (0.4m), 9s period with ENE swell.
The current surf forecast for Boat Basin Lefts at 4AM is: 0.5m 9s primary swell from a East direction (forecast issued at 09:00pm July 17). An open ocean swell of 0.2m 7s is not directed at the surf break, a second open ocean swell of 1.1m 7s 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 (0.4m) | 9s |
| Evening (18 Jul) | 1.5ft (0.4m) | 9s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 11mm), heaviest on Sun morning. Warm (max 29°C on Sat morning, min 27°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | ||||||||||||||||
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 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 |
Wave Graph  | ||||||||||||||||||
 kJ | 44 | 44 | 44 | 43 | 43 | 42 | 42 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 41 |
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 | cross | cross | cross | cross-off | cross-off |
High Tide | 10:59PM0.94m | 9:45AM0.84m | 11:30PM0.93m | 10:51AM0.78m | ||||||||||||||
Low Tide | 4:41AM0.56m | 4:34PM0.19m | 5:36AM0.49m | 5:13PM0.31m | ||||||||||||||
 |  | | |  |  | | |  | | | | | | | | | | |
 | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — |
mm | 1 | — | — | 1 | 1 | — | — | — | — | — | — | — | 1 | 2 | 2 | 2 | 1 | 1 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 31 | 30 | 31 | 30 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 31 | 31 | 31 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ENE 9 | WSW 6 | WSW 6 | WSW 6 | ENE 9 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | SW 6 |
| kJ | 44 | 44 | 44 | 43 | 43 | 42 | 42 | 28 | 70 | 55 | 53 | 27 | 51 | 55 | 62 | 64 | 71 | 70 |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | ENE 9 | ENE 9 | ENE 9 | S 5 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 |
| kJ | 15 | 9 | 9 | 5 | 5 | 10 | 10 | 5 | 28 | 28 | 27 | 9 | 27 | 27 | 27 | 27 | 27 | 41 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 7 | S 7 | S 7 | S 7 | SE 11 | NNW 7 | NNW 6 | S 5 | S 6 | S 6 | NNW 6 | S 5 | S 6 | S 6 | S 6 | SSE 6 | SE 9 |
| kJ | 5 | 10 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 12 | 12 | 4 | 8 | 10 | 10 | 6 | 6 | 21 |
Wind waves Height (m) Direction Period (s) | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | — | — | — | WSW 6 | — | — | — | — | — | — |
| kJ | 99 | 102 | 102 | 99 | 83 | 83 | 83 | 83 | — | — | — | 51 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 229 | 229 | 16 | 229 | 229 | 229 | 229 | 229 | 229 | 229 | 229 | 229 | 11 | 229 | 229 | 229 | 11 | 0 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
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