Surf Forecasts:
How big are the waves at Boat Basin Lefts today (12 Sep):
- Morning surf: Morning surf (12 Sep, local time) - 2.5ft (0.7m), 13s period with E swell.
- Afternoon surf: Afternoon surf (12 Sep, local time) - 2.5ft (0.7m), 13s period with E swell.
- Evening surf: Evening surf (12 Sep, local time) - 3ft (0.9m), 13s period with ENE swell.
The current surf forecast for Boat Basin Lefts at 5PM is: 0.8m 13s primary swell from a East-northeast direction and 0.5m 9s secondary swell from a East-northeast direction (forecast issued at 09:00am September 12). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Sep) | 2.5ft (0.7m) | 13s |
| Afternoon (12 Sep) | 2.5ft (0.7m) | 13s |
| Evening (12 Sep) | 3ft (0.9m) | 13s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Warm (max 29°C on Sat morning, min 27°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||||||||
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 13 | E 13 | E 13 | E 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | ENE 9 | ENE 9 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 176 | 173 | 173 | 173 | 303 | 286 | 282 | 282 | 222 | 215 | 205 | 198 | 195 | 206 | 294 | 294 | 243 | 239 | 186 | 170 | 184 | 180 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | glassy | glassy | glassy | glassy | cross-on | cross-on | cross | cross |
High Tide | 8:02AM0.88m | 8:35PM0.90m | 8:58AM0.87m | 8:59PM0.90m | 9:53AM0.85m | 9:23PM0.88m | ||||||||||||||||
Low Tide | 2:22PM0.31m | 2:52AM0.33m | 2:59PM0.39m | 3:31AM0.28m | 3:35PM0.47m | |||||||||||||||||
 | | | |  | | | | | | |  |  | | | | | |  | | | | |
 | 6:09 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:23 | — | — | — | — | — | — | — | 6:22 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 28 | 29 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 |
Feels °C | 31 | 32 | 32 | 32 | 31 | 31 | 31 | 32 | 31 | 32 | 33 | 32 | 32 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 13 | E 13 | E 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | ENE 9 | ENE 9 |
| kJ | 176 | 173 | 173 | 173 | 303 | 286 | 282 | 282 | 222 | 215 | 205 | 198 | 195 | 206 | 294 | 294 | 243 | 239 | 186 | 170 | 184 | 180 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 9 | ENE 9 | SE 8 | SE 8 | SE 8 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 |
| kJ | 62 | 57 | 59 | 43 | 18 | 18 | 35 | 37 | 35 | 35 | 34 | 34 | 46 | 45 | 45 | 59 | 59 | 75 | 75 | 75 | 94 | 89 |
Swell 3 Height (m) Direction Period (s) | W 7 | SE 9 | SE 9 | SE 9 | W 7 | W 7 | W 7 | NNE 8 | NNE 6 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | WSW 6 | ENE 15 | ENE 15 | ENE 16 | NNE 9 | NE 9 | ENE 14 | ENE 14 |
| kJ | 15 | 28 | 27 | 27 | 8 | 8 | 8 | 24 | 8 | 22 | 20 | 24 | 23 | 25 | 4 | 22 | 22 | 24 | 52 | 83 | 41 | 66 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1905 | 11 | 1905 | 0 | 0 | 0 | 0 | 0 | 11 | 7 | 2064 | 1290 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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