Surf Forecasts:
How big are the waves at Boat Basin Lefts today (18 Oct):
- Morning surf: Morning surf (18 Oct, local time) - 4.5ft (1.4m), 9s period with ENE swell.
- Afternoon surf: Afternoon surf (18 Oct, local time) - 0.5ft (0.2m), 11s period with NNE swell.
- Evening surf: Evening surf (18 Oct, local time) - 2.5ft (0.8m), 10s period with ENE swell.
The current surf forecast for Boat Basin Lefts at 1PM is: 1.3m 9s primary swell from a East-northeast direction (forecast issued at 09:00am October 18). An open ocean swell of 6.5m 11s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Oct) | 4.5ft (1.4m) | 9s |
| Afternoon (18 Oct) | 0.5ft (0.2m) | 11s |
| Evening (18 Oct) | 2.5ft (0.8m) | 10s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 112mm), heaviest during Sun morning. Warm (max 28°C on Tue morning, min 25°C on Sun morning). Winds decreasing (stormy winds from the SE on Sun morning, light winds from the E by Tue night). | ||||||||||||||||||||||
Sunday 18 | Monday 19 | Tuesday 20 | ||||||||||||||||||||
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) | NNE 9 | ENE 9 | ENE 9 | NNE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 480 | 320 | 245 | 13 | 117 | 115 | 108 | 96 | 73 | 71 | 151 | 114 | 149 | 116 | 116 | 86 | 121 | 157 | 119 | 116 | 119 | 163 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off |
High Tide | 2:49PM0.77m | 11:01PM0.73m | 3:46PM0.78m | 00:16AM0.70m | 4:25PM0.80m | |||||||||||||||||
Low Tide | 6:27AM0.24m | 7:30PM0.69m | 7:25AM0.27m | 9:06PM0.67m | 8:25AM0.30m | |||||||||||||||||
 |  |  | |  | |  | | | | | |  | | | |  |  |  | | | | |
 | 6:11 | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 5:59 | — | — |
mm | 37 | 43 | 9 | 23 | 6 | 6 | 4 | 1 | 2 | 2 | 2 | 2 | 5 | 2 | 1 | 1 | — | — | — | — | 2 | 1 |
Temp °C | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 27 | 27 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 4 | 15 | 17 | 16 | 17 | 19 | 21 | 21 | 23 | 24 | 24 | 26 | 24 | 24 | 27 | 29 | 29 | 30 | 30 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 9 | ENE 9 | ENE 9 | NNE 11 | ENE 10 | ENE 10 | ENE 9 | WSW 11 | SW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | S 8 | SSW 9 | SSW 9 | WSW 10 | S 8 | SW 9 | SW 9 | SW 9 |
| kJ | 480 | 320 | 245 | 13 | 117 | 115 | 108 | 661 | 425 | 471 | 314 | 246 | 200 | 180 | 488 | 686 | 563 | 223 | 247 | 427 | 388 | 359 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | NNE 11 | ENE 9 | WSW 11 | ENE 9 | W 11 | W 11 | W 11 | W 11 | WSW 10 | ENE 9 | W 11 | W 11 | WSW 10 | W 11 | NE 9 | W 11 |
| kJ | — | — | — | — | — | — | 11 | 96 | 325 | 71 | 151 | 114 | 149 | 116 | 281 | 70 | 121 | 157 | 210 | 116 | 77 | 163 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | N 11 | NNE 11 | ENE 9 | NNE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | W 11 | W 11 | ENE 9 | ENE 9 | W 11 | ENE 9 | W 11 | NE 9 |
| kJ | — | — | — | — | — | — | 9 | 22 | 73 | 21 | 71 | 71 | 71 | 70 | 116 | 86 | 70 | 70 | 119 | 70 | 119 | 88 |
Wind waves Height (m) Direction Period (s) | ESE 13 | SE 12 | SSE 11 | SSE 11 | S 10 | S 10 | S 10 | S 9 | SSE 9 | S 9 | S 9 | S 9 | S 8 | S 9 | SE 7 | SE 7 | SSE 7 | S 8 | — | — | — | — |
| kJ | 45686 | 13933 | 9808 | 7341 | 5899 | 4535 | 3648 | 2192 | 1497 | 1499 | 1040 | 949 | 671 | 742 | 86 | 71 | 164 | 314 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1290 | 1836 | 1836 | 2064 | 2069 | 1885 | 1836 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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