Surf Forecasts:
How big are the waves at Boat Basin Lefts today (18 Jun):
- Afternoon surf: Afternoon surf (18 Jun, local time) - 4.5ft (1.3m), 8s period with ENE swell.
- Evening surf: Evening surf (18 Jun, local time) - 5ft (1.5m), 8s period with ENE swell.
The current surf forecast for Boat Basin Lefts at 8PM is: 1.5m 7s primary swell from a East-northeast direction and 0.2m 8s secondary swell from a North-northeast direction (forecast issued at 03:00pm June 18). An open ocean swell of 0.5m 10s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Jun) | - | - |
| Afternoon (18 Jun) | 4.5ft (1.3m) | 8s |
| Evening (18 Jun) | 5ft (1.5m) | 8s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 55mm), heaviest during Fri morning. Warm (max 29°C on Sat morning, min 25°C on Thu night). Winds decreasing (fresh winds from the SSE on Fri morning, light winds from the SSE by Sun morning). | ||||||||||||||||||||||||
Thu 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | 10 AM | |
Swell Height Map |  |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | E 8 | E 8 | NNE 6 | NNE 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 157 | 264 | 237 | 277 | 263 | 337 | 387 | 13 | 9 | 95 | 80 | 80 | 82 | 82 | 63 | 63 | 61 | 31 | 31 | 31 | 31 | 31 | 30 | 30 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off |
High Tide | 11:45PM0.94m | 9:41AM0.85m | 00:25AM0.93m | 10:47AM0.79m | 1:01AM0.92m | |||||||||||||||||||
Low Tide | 4:14PM-0.01m | 5:06AM0.66m | 5:02PM0.09m | 6:10AM0.61m | 5:48PM0.21m | 7:16AM0.54m | ||||||||||||||||||
 | |  |  |  | |  | | | | | | | |  | | | | | | | | | | |
 | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — |
 | — | 6:49 | — | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | 6:50 |
mm | 4 | 5 | — | — | 1 | 3 | 9 | 16 | 11 | 1 | 2 | 3 | 1 | — | — | — | 2 | — | — | — | — | — | — | — |
Temp °C | 29 | 28 | 28 | 28 | 27 | 26 | 25 | 25 | 26 | 28 | 27 | 27 | 28 | 27 | 27 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 |
Feels °C | 30 | 28 | 29 | 29 | 28 | 27 | 26 | 24 | 26 | 29 | 28 | 29 | 30 | 29 | 30 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 11 | SE 10 | SE 10 | NNE 7 | NNE 7 | NNE 6 | NNE 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | SSW 5 | E 8 | S 7 | S 7 | S 7 |
| kJ | 40 | 41 | 55 | 52 | 49 | 10 | 15 | 13 | 9 | 95 | 80 | 80 | 82 | 82 | 63 | 63 | 61 | 31 | 31 | 14 | 31 | 26 | 34 | 32 |
Swell 2 Height (m) Direction Period (s) | SE 11 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | N 10 | N 10 | N 10 | N 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | S 5 | E 8 | SSW 5 | E 8 | E 8 | E 8 |
| kJ | 5 | 12 | 6 | 6 | 6 | 2 | 2 | 2 | 2 | 34 | 34 | 33 | 42 | 30 | 43 | 50 | 44 | 33 | 12 | 31 | 10 | 31 | 30 | 30 |
Swell 3 Height (m) Direction Period (s) | S 12 | SE 11 | NW 9 | N 10 | NW 9 | NW 8 | NW 8 | NW 8 | W 8 | NNE 7 | NNE 6 | NNE 7 | NNE 7 | NNE 6 | NNE 7 | NNE 7 | N 10 | NE 8 | SE 10 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 |
| kJ | 3 | 5 | 3 | 2 | 3 | 3 | 3 | 3 | 1 | 9 | 8 | 9 | 9 | 8 | 9 | 9 | 18 | 15 | 33 | 40 | 40 | 40 | 35 | 36 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | E 8 | E 8 | ESE 7 | SE 7 | SSE 6 | S 6 | SSE 5 | S 5 | S 5 | S 5 | S 5 | S 5 | S 5 | — | — | — | — | — | — |
| kJ | 157 | 264 | 237 | 277 | 263 | 337 | 387 | 431 | 347 | 97 | 64 | 48 | 32 | 25 | 25 | 18 | 12 | 12 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1290 | 1290 | 1290 | 1884 | 1290 | 1290 | 0 | 1290 | 1290 | 1290 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1290 | 1837 | 1836 | 2064 | 1290 | 2064 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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