Surf Forecasts:
How big are the waves at Boat Basin Lefts today (22 Sep):
- Morning surf: Morning surf (22 Sep, local time) - 3ft (0.9m), 10s period with NNW swell.
- Afternoon surf: Afternoon surf (22 Sep, local time) - 3ft (0.9m), 10s period with NNW swell.
- Evening surf: Evening surf (22 Sep, local time) - 3ft (0.9m), 12s period with NNW swell.
The current surf forecast for Boat Basin Lefts at 3PM is: 0.9m 10s primary swell from a North-northwest direction and 0.6m 10s secondary swell from a Northeast direction (forecast issued at 09:00am September 22). An open ocean swell of 1.0m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Sep) | 3ft (0.9m) | 10s |
| Afternoon (22 Sep) | 3ft (0.9m) | 10s |
| Evening (22 Sep) | 3ft (0.9m) | 12s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 50mm), heaviest during Thu night. Warm (max 29°C on Thu morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||
Tuesday 22 | Wednesday 23 | Thursday 24 | ||||||||||||||||||||
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) | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 9 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 166 | 166 | 133 | 163 | 163 | 226 | 233 | 283 | 278 | 274 | 269 | 215 | 204 | 193 | 135 | 133 | 99 | 88 | 56 | 56 | 54 | 50 |
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-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross-on | cross-on |
High Tide | 6:12PM0.80m | 3:53AM0.75m | 6:34PM0.82m | 5:02AM0.78m | 6:54PM0.84m | |||||||||||||||||
Low Tide | 10:26AM0.25m | 11:22PM0.64m | 11:14AM0.25m | 00:01AM0.59m | 11:57AM0.26m | |||||||||||||||||
 | | | |  | | | |  | | | |  | | | | | | | | | | |
 | 6:09 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | 1 | 1 | 1 | 4 | 4 | 4 | 2 | 1 | — | 1 | 1 | 1 | — | — | — | — | — | 1 | 3 | 2 | 1 | 5 |
Temp °C | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 |
Feels °C | 30 | 30 | 30 | 29 | 30 | 29 | 30 | 28 | 28 | 29 | 29 | 30 | 31 | 31 | 31 | 31 | 31 | 30 | 31 | 30 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | NNW 10 | NNW 10 | NNW 10 | SSW 7 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 11 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | NNW 9 |
| kJ | 68 | 166 | 133 | 163 | 121 | 226 | 233 | 283 | 278 | 274 | 269 | 215 | 204 | 178 | 158 | 121 | 105 | 89 | 89 | 91 | 88 | 50 |
Swell 2 Height (m) Direction Period (s) | NNW 10 | NE 10 | NE 10 | NE 10 | NNW 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 9 | NE 9 | NE 9 | NE 9 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NE 9 |
| kJ | 166 | 89 | 82 | 80 | 163 | 47 | 47 | 46 | 45 | 42 | 41 | 41 | 41 | 193 | 135 | 133 | 99 | 88 | 56 | 56 | 54 | 39 |
Swell 3 Height (m) Direction Period (s) | NE 11 | SE 8 | SE 8 | SE 8 | NE 10 | SE 8 | E 13 | S 11 | E 9 | SE 8 | SE 8 | SE 8 | SE 8 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | SE 8 |
| kJ | 90 | 17 | 17 | 17 | 61 | 17 | 3 | 2 | 2 | 17 | 17 | 16 | 16 | 41 | 42 | 42 | 41 | 41 | 40 | 40 | 39 | 17 |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSW 6 | SSW 6 | SSW 6 | SSE 6 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SW 7 | SW 7 | — | — | — | — | — | — | — | — | SW 7 |
| kJ | 32 | 68 | 85 | 90 | 41 | 136 | 183 | 198 | 212 | 223 | 262 | 233 | 210 | — | — | — | — | — | — | — | — | 85 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 0 | 1836 | 0 | 1905 | 0 | 1836 | 1290 | 1290 | 229 | 229 | 229 | 229 | 229 | 0 | 11 | 11 | 11 | 229 | 229 | 229 | 11 | 16 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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