Surf Forecasts:
How big are the waves at Boat Basin Lefts today (28 Sep):
- Morning surf: Morning surf (28 Sep, local time) - 1.5ft (0.4m), 8s period with NNE swell.
- Afternoon surf: Afternoon surf (28 Sep, local time) - 1.5ft (0.4m), 9s period with NNE swell.
- Evening surf: Evening surf (28 Sep, local time) - 1.5ft (0.4m), 9s period with NNE swell.
The current surf forecast for Boat Basin Lefts at 4AM is: 0.1m 7s primary swell from a West direction (forecast issued at 09:00pm September 27). An open ocean swell of 0.8m 6s is not directed at the surf break, a second open ocean swell of 0.4m 6s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Sep) | 1.5ft (0.4m) | 8s |
| Afternoon (28 Sep) | 1.5ft (0.4m) | 9s |
| Evening (28 Sep) | 1.5ft (0.4m) | 9s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 26mm), heaviest during Mon morning. Warm (max 29°C on Mon afternoon, min 27°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Sun 27 | Monday 28 | Tuesday 29 | ||||||||||||||||
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 9 | ENE 9 | W 7 | ENE 9 | NNE 8 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 8 | NNE 8 | NNE 8 | SE 8 | NNE 8 | NNE 8 | NNE 8 |
Wave Graph  | ||||||||||||||||||
 kJ | 31 | 31 | 26 | 1 | 26 | 24 | 25 | 26 | 25 | 25 | 25 | 24 | 38 | 37 | 0 | 22 | 22 | 22 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:54PM0.89m | 8:46AM0.88m | 8:18PM0.89m | 9:41AM0.88m | 8:44PM0.90m | |||||||||||||
Low Tide | 2:23AM0.27m | 2:35PM0.45m | 3:02AM0.19m | 3:15PM0.52m | ||||||||||||||
 |  | | |  | | | |  | | | |  | |  | | | | |
 | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:12 | — | — |
mm | 2 | — | — | — | 1 | 3 | 5 | 1 | — | — | — | 1 | — | — | — | — | — | 1 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 |
Feels °C | 32 | 31 | 30 | 31 | 32 | 32 | 31 | 33 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 31 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 6 | ENE 9 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SW 6 | SSE 7 | SW 6 | SW 6 | SSE 7 | SSE 7 | SW 6 | SW 6 | SE 8 | SW 6 | SSE 7 |
| kJ | 33 | 32 | 26 | 36 | 43 | 22 | 27 | 16 | 21 | 20 | 16 | 26 | 31 | 23 | 21 | 30 | 39 | 20 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | SE 7 | WSW 6 | SSE 7 | WSW 6 | NNE 9 | NNE 9 | SSW 6 | SSE 7 | SE 7 | SW 6 | NNE 8 | NNE 8 | SE 8 | S 7 | SE 7 | NNE 8 |
| kJ | 31 | 31 | 12 | 15 | 19 | 12 | 25 | 26 | 13 | 29 | 25 | 16 | 38 | 37 | 31 | 15 | 26 | 22 |
Swell 3 Height (m) Direction Period (s) | N 9 | SSE 7 | N 8 | SE 7 | ENE 9 | NNE 8 | SSE 7 | SSE 7 | NNE 9 | NNE 9 | NNE 9 | NNE 8 | S 7 | SE 7 | S 7 | NNE 8 | NNE 8 | ENE 9 |
| kJ | 24 | 18 | 12 | 12 | 26 | 24 | 19 | 20 | 25 | 25 | 25 | 24 | 15 | 26 | 14 | 22 | 22 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | SW 6 | W 7 | WSW 6 | — | — | SSW 6 | — | — | — | WSW 3 | SW 6 | — | — | SW 6 | SW 6 | SW 6 |
| kJ | — | — | 46 | 1 | 29 | — | — | 29 | — | — | — | 1 | 18 | — | — | 36 | 36 | 43 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 0 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 16 | 11 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
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