Surf Forecasts:
How big are the waves at Boat Basin Lefts today (12 Jul):
- Morning surf: Morning surf (12 Jul, local time) - 5ft (1.6m), 13s period with WNW swell.
- Afternoon surf: Afternoon surf (12 Jul, local time) - 5ft (1.5m), 13s period with W swell.
- Evening surf: Evening surf (12 Jul, local time) - 4.5ft (1.4m), 13s period with WNW swell.
The current surf forecast for Boat Basin Lefts at 2PM is: 1.5m 13s primary swell from a West direction and 1.3m 8s secondary swell from a East direction (forecast issued at 09:00am July 12). An open ocean swell of 0.4m 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 (12 Jul) | 5ft (1.6m) | 13s |
| Afternoon (12 Jul) | 5ft (1.5m) | 13s |
| Evening (12 Jul) | 4.5ft (1.4m) | 13s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 36mm), heaviest during Tue night. Warm (max 29°C on Sun morning, min 26°C on Mon afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wed 15 | |||||||||||||||||||||
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 | 1 AM | 4 AM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | WNW 13 | WNW 13 | WNW 13 | W 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 836 | 811 | 811 | 775 | 669 | 522 | 514 | 490 | 406 | 313 | 254 | 250 | 246 | 193 | 183 | 180 | 138 | 133 | 133 | 123 | 91 | 90 | 88 | 58 |
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 | off | off | off | off | glassy | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 7:39PM0.87m | 4:45AM0.93m | 8:28PM0.91m | 5:45AM0.95m | 9:11PM0.93m | |||||||||||||||||||
Low Tide | 11:47AM0.00m | 00:00AM0.74m | 12:41PM-0.05m | 1:03AM0.73m | 1:33PM-0.07m | 2:00AM0.71m | ||||||||||||||||||
 | | |  |  |  | | | | | | | | | |  |  | |  | | | | | | |
 | 6:00 | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 |
 | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | 6:52 |
mm | 5 | 2 | 1 | — | 2 | — | — | — | 2 | 2 | 1 | 2 | 4 | 3 | — | — | — | — | — | 1 | 3 | 6 | 2 | 2 |
Temp °C | 27 | 28 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 27 | 27 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 |
Feels °C | 29 | 30 | 31 | 30 | 31 | 31 | 30 | 30 | 30 | 30 | 29 | 29 | 30 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | WNW 13 | WNW 13 | WNW 13 | W 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | SE 8 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 8 |
| kJ | 836 | 811 | 811 | 775 | 669 | 522 | 514 | 490 | 406 | 313 | 254 | 250 | 246 | 193 | 183 | 180 | 167 | 251 | 253 | 264 | 130 | 95 | 59 | 57 |
Swell 2 Height (m) Direction Period (s) | WSW 10 | WSW 10 | WSW 10 | SE 11 | SE 11 | WSW 10 | WSW 9 | E 8 | E 8 | E 8 | E 8 | WSW 9 | E 8 | E 8 | SE 8 | SE 8 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 |
| kJ | 80 | 80 | 39 | 18 | 18 | 56 | 47 | 138 | 104 | 102 | 84 | 27 | 107 | 84 | 68 | 66 | 138 | 133 | 133 | 123 | 91 | 90 | 88 | 58 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 11 | S 10 | S 10 | SE 10 | SE 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | SE 9 | SE 9 | SE 9 | E 8 | E 10 | WSW 8 | WSW 9 | NE 9 | NNE 9 | E 10 | E 10 | E 10 | E 10 |
| kJ | 19 | 19 | 18 | 2 | 2 | 14 | 13 | 32 | 32 | 27 | 28 | 14 | 39 | 61 | 71 | 68 | 23 | 15 | 3 | 8 | 29 | 30 | 30 | 17 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | — | — | — | E 8 | E 8 | ESE 6 | — | — | WSW 2 | — | SW 3 | WSW 8 | WSW 8 | SW 7 | SSW 7 | SW 7 | SW 7 |
| kJ | 205 | 194 | 208 | 187 | 187 | 195 | 167 | — | — | — | 120 | 84 | 108 | — | — | 1 | — | 2 | 36 | 12 | 151 | 163 | 211 | 258 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1836 | 1836 | 2064 | 2064 | 1837 | 20 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 11 | 11 | 229 | 229 | 1905 | 1866 | 231 | 231 | 231 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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