Surf Forecasts:
How big are the waves at Threes today (18 Oct):
- Afternoon surf: Afternoon surf (18 Oct, local time) - 0.5ft (0.2m), 8s period with N swell.
- Evening surf: Evening surf (18 Oct, local time) - 8ft (2.4m), 11s period with WSW swell.
The current surf forecast for Threes at 11PM is: 2.3m 11s primary swell from a West-southwest direction (forecast issued at 03:00pm October 18). An open ocean swell of 0.9m 9s is not directed at the surf break, a second open ocean swell of 4.5m 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 (18 Oct) | - | - |
| Afternoon (18 Oct) | 0.5ft (0.2m) | 8s |
| Evening (18 Oct) | 8ft (2.4m) | 11s |
Table - waves today at Threes. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 50mm), heaviest during Sun afternoon. Warm (max 28°C on Tue morning, min 25°C on Sun afternoon). Winds decreasing (gales from the SSE on Sun afternoon, calm by Mon night). | ||||||||||||||||||||
Sun 18 | Monday 19 | Tuesday 20 | ||||||||||||||||||
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) | N 8 | N 8 | N 11 | WSW 11 | WSW 11 | SW 10 | SW 10 | SW 10 | SW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 10 | WSW 10 | W 11 | W 11 | SW 9 | SW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 6 | 6 | 10 | 1465 | 921 | 1275 | 1092 | 625 | 314 | 242 | 212 | 212 | 161 | 119 | 107 | 128 | 149 | 146 | 326 | 290 |
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 | glassy | off | off | off | off | cross-off | cross-off |
High Tide | 2:36PM0.63m | 11:25PM0.56m | 3:32PM0.65m | 00:55AM0.54m | 4:14PM0.66m | |||||||||||||||
Low Tide | 7:49PM0.52m | 7:29AM0.09m | 9:11PM0.48m | 8:33AM0.10m | ||||||||||||||||
 |  |  |  | | | | | | | | | | |  |  |  | | |  | |
 | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — |
mm | 9 | 16 | 5 | 3 | 3 | 3 | 5 | 2 | 2 | 3 | 2 | 3 | 1 | 1 | — | — | — | — | 1 | — |
Temp °C | 25 | 25 | 26 | 26 | 26 | 25 | 26 | 27 | 27 | 27 | 26 | 25 | 26 | 26 | 27 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 17 | 17 | 19 | 20 | 21 | 20 | 22 | 25 | 26 | 26 | 27 | 26 | 28 | 30 | 29 | 30 | 31 | 31 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 10 | ENE 10 | WSW 11 | WSW 11 | SW 10 | SW 10 | SW 10 | SW 9 | WSW 9 | WSW 9 | WSW 9 | SSW 8 | SSW 8 | W 10 | SSW 8 | SSW 8 | SSW 8 | SW 9 | SW 9 |
| kJ | 256 | 148 | 145 | 1465 | 921 | 1275 | 1092 | 625 | 314 | 242 | 212 | 212 | 376 | 344 | 102 | 324 | 400 | 383 | 326 | 290 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 8 | N 11 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | WSW 9 | WSW 9 | WSW 10 | WSW 10 | W 11 | W 11 | W 11 | WNW 11 |
| kJ | 6 | 6 | 10 | 136 | 136 | 108 | 94 | 94 | 103 | 71 | 70 | 70 | 161 | 119 | 107 | 128 | 149 | 146 | 146 | 194 |
Swell 3 Height (m) Direction Period (s) | — | — | — | ENE 9 | NNE 11 | NNE 11 | NNE 10 | NNE 10 | W 11 | W 10 | W 10 | W 10 | ENE 9 | ENE 9 | ENE 9 | W 11 | ENE 9 | ENE 9 | ENE 9 | ENE 9 |
| kJ | — | — | — | 151 | 12 | 11 | 11 | 10 | 110 | 49 | 71 | 100 | 70 | 90 | 90 | 110 | 90 | 90 | 88 | 96 |
Wind waves Height (m) Direction Period (s) | S 11 | S 10 | S 10 | SSE 10 | S 9 | SSE 9 | SSE 8 | SSE 9 | S 9 | S 8 | S 8 | S 8 | SE 7 | SE 7 | S 8 | — | — | — | — | — |
| kJ | 7425 | 5727 | 5214 | 3561 | 3034 | 1627 | 1479 | 1351 | 1080 | 919 | 697 | 623 | 112 | 71 | 397 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1270 | 1270 | 1270 | 1270 | 1270 | 1810 | 1810 | 1810 | 2051 | 2089 | 2051 | 26 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Guam | ||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||
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