Surf Forecasts:
How big are the waves at Boat Basin Lefts today (23 Sep):
- Morning surf: Morning surf (23 Sep, local time) - 3.5ft (1.0m), 12s period with NNW swell.
- Afternoon surf: Afternoon surf (23 Sep, local time) - 3.5ft (1.0m), 12s period with NNW swell.
- Evening surf: Evening surf (23 Sep, local time) - 3ft (0.9m), 11s period with NNW swell.
The current surf forecast for Boat Basin Lefts at 6AM is: 1.0m 12s primary swell from a North-northwest direction (forecast issued at 03:00am September 23). An open ocean swell of 0.8m 7s is not directed at the surf break, a second open ocean swell of 0.6m 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 (23 Sep) | 3.5ft (1.0m) | 12s |
| Afternoon (23 Sep) | 3.5ft (1.0m) | 12s |
| Evening (23 Sep) | 3ft (0.9m) | 11s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 59mm), heaviest during Fri afternoon. Warm (max 29°C on Wed morning, min 27°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 23 | Thursday 24 | Friday 25 | ||||||||||||||||||||||
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) | 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 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 233 | 283 | 304 | 299 | 269 | 260 | 204 | 193 | 135 | 133 | 99 | 88 | 86 | 56 | 54 | 50 | 48 | 47 | 32 | 31 | 30 | 27 | 27 | 28 |
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 | cross | cross-on | glassy | cross | 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 | 3:53AM0.75m | 6:34PM0.82m | 5:02AM0.78m | 6:54PM0.84m | 6:02AM0.81m | 7:13PM0.86m | ||||||||||||||||||
Low Tide | 11:22PM0.64m | 11:14AM0.25m | 00:01AM0.59m | 11:57AM0.26m | 00:36AM0.52m | 12:37PM0.29m | ||||||||||||||||||
 |  |  | | |  | |  | | |  | | | | | | | | | | | |  | | |
 | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | — | — | — | — | — | 4 | — | 1 | 2 | 3 | 6 | 3 | — | 1 | — | 4 | 1 | 2 | 5 | 2 | 2 | 4 | 10 | 5 |
Temp °C | 28 | 28 | 27 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 31 | 31 | 29 | 31 | 31 | 30 | 31 | 32 | 32 | 31 | 32 | 31 | 31 | 31 | 30 | 31 | 30 | 29 | 29 | 29 | 30 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 11 | NNW 11 | NNW 11 | SW 6 | SW 6 | SW 6 | SSW 6 | SW 7 | NNW 10 | NNW 9 | SSW 6 | NNW 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 105 | 283 | 304 | 299 | 269 | 260 | 204 | 193 | 135 | 78 | 66 | 68 | 52 | 61 | 54 | 50 | 41 | 47 | 28 | 27 | 27 | 27 | 27 | 28 |
Swell 2 Height (m) Direction Period (s) | NNW 12 | SW 7 | SW 7 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NE 9 | NE 9 | NNW 9 | ENE 8 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 |
| kJ | 233 | 65 | 46 | 42 | 41 | 41 | 41 | 41 | 42 | 133 | 99 | 88 | 86 | 56 | 39 | 39 | 48 | 28 | 32 | 31 | 30 | 27 | 13 | 13 |
Swell 3 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 10 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | SE 8 | SE 8 | ENE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 9 | SSE 8 | SSE 7 |
| kJ | 47 | 46 | 45 | 32 | 32 | 16 | 16 | 15 | 20 | 42 | 41 | 41 | 40 | 40 | 17 | 16 | 30 | 15 | 15 | 16 | 17 | 13 | 6 | 5 |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSE 6 | S 6 | S 7 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 6 | — | — | — | — | SW 7 | SW 7 | SW 6 | WSW 6 | SW 7 | SW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 |
| kJ | 39 | 29 | 31 | 110 | 88 | 97 | 80 | 80 | 91 | — | — | — | — | 97 | 84 | 91 | 72 | 192 | 216 | 217 | 173 | 147 | 113 | 93 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 1836 | 1290 | 229 | 1836 | 1905 | 229 | 229 | 11 | 11 | 11 | 11 | 11 | 11 | 16 | 16 | 16 | 11 | 11 | 16 | 11 | 16 | 229 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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