Surf Forecasts:
How big are the waves at Boat Basin Lefts today (30 Sep):
- Morning surf: Morning surf (30 Sep, local time) - 1.5ft (0.4m), 10s period with WNW swell.
- Afternoon surf: Afternoon surf (30 Sep, local time) - 1.5ft (0.5m), 12s period with NW swell.
- Evening surf: Evening surf (30 Sep, local time) - 2ft (0.6m), 11s period with NW swell.
The current surf forecast for Boat Basin Lefts at 8AM is: 0.4m 9s primary swell from a East-northeast direction (forecast issued at 03:00am September 30). An open ocean swell of 0.4m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Sep) | 1.5ft (0.4m) | 10s |
| Afternoon (30 Sep) | 1.5ft (0.5m) | 12s |
| Evening (30 Sep) | 2ft (0.6m) | 11s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 46mm), heaviest during Fri night. Warm (max 29°C on Wed morning, min 27°C on Thu night). Winds increasing (light winds from the W on Wed night, fresh winds from the W by Fri morning). | ||||||||||||||||||||||||
Wednesday 30 | Thursday 1 | Friday 2 | ||||||||||||||||||||||
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 | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | WNW 10 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NNE 13 | NW 10 | NW 10 | NW 10 | NW 10 | NNE 12 | NNE 12 | NNE 12 | NNE 12 | NE 8 | NE 8 | NE 8 | NE 8 | NW 9 | NE 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 29 | 30 | 26 | 36 | 53 | 116 | 103 | 96 | 92 | 59 | 64 | 34 | 69 | 52 | 51 | 50 | 49 | 48 | 41 | 41 | 42 | 42 | 25 | 35 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:40AM0.87m | 9:15PM0.89m | 11:45AM0.84m | 9:50PM0.88m | 1:00PM0.82m | |||||||||||||||||||
Low Tide | 3:45AM0.14m | 3:57PM0.58m | 4:32AM0.11m | 4:43PM0.64m | 5:25AM0.10m | 5:38PM0.69m | ||||||||||||||||||
 | |  | |  |  | | | |  | | | | | | | | | | | | | |  | |
 | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:12 | — | — | — | — | — | — | — | 6:10 | — | — | — | — | — | — | — | 6:09 | — | — |
mm | 2 | 1 | 1 | 1 | — | — | 1 | 1 | 1 | — | 2 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 2 | 3 | 4 | 2 | 3 | 7 |
Temp °C | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 29 | 30 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | ENE 9 | ENE 9 | WNW 10 | NW 12 | NW 12 | NW 11 | NW 11 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | NW 10 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 |
| kJ | 20 | 30 | 26 | 36 | 53 | 116 | 103 | 96 | 42 | 47 | 51 | 56 | 69 | 40 | 51 | 39 | 38 | 38 | 41 | 41 | 42 | 42 | 24 | 35 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | SSE 7 | SE 7 | ENE 9 | SSE 6 | NNE 8 | NNE 8 | SW 6 | NW 11 | NW 10 | NW 10 | NW 10 | NE 8 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NNE 12 | NNE 12 | NNE 12 | NNE 12 | NW 9 | NNE 11 |
| kJ | 29 | 20 | 12 | 28 | 14 | 23 | 23 | 18 | 92 | 47 | 64 | 34 | 28 | 50 | 34 | 33 | 29 | 28 | 28 | 28 | 28 | 27 | 21 | 25 |
Swell 3 Height (m) Direction Period (s) | SW 6 | SW 5 | NW 9 | SW 5 | ENE 9 | SSE 6 | SW 5 | SSE 6 | NNE 13 | NNE 13 | NNE 13 | NNE 7 | NNE 13 | NNE 12 | NNE 12 | NNE 12 | NNE 12 | NNE 12 | NW 9 | NW 8 | NW 8 | NW 8 | NNE 11 | NW 9 |
| kJ | 8 | 7 | 23 | 7 | 27 | 13 | 10 | 14 | 59 | 59 | 58 | 21 | 53 | 52 | 51 | 50 | 49 | 48 | 20 | 11 | 11 | 10 | 25 | 12 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | WNW 2 | NW 2 | NNW 3 | NNW 3 | — | SW 6 | SSW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 8 | SW 8 |
| kJ | — | — | — | — | — | — | 1 | 1 | 1 | 1 | — | 97 | 74 | 83 | 83 | 120 | 126 | 152 | 208 | 221 | 275 | 368 | 611 | 694 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 11 | 11 | 2064 | 11 | 229 | 2064 | 16 | 11 | 11 | 11 | 16 | 11 | 16 | 11 | 11 | 16 | 2074 | 2386 | 1996 | 2074 | 1905 | 2092 | 2077 | 1866 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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