Surf Forecasts:
How big are the waves at Threes today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 4.5ft (1.3m), 8s period with W swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 4ft (1.2m), 8s period with W swell.
- Evening surf: Evening surf (18 Aug, local time) - 3.5ft (1.1m), 8s period with W swell.
The current surf forecast for Threes at 4PM is: 1.2m 8s primary swell from a West direction (forecast issued at 09:00am August 18). An open ocean swell of 0.4m 9s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 4.5ft (1.3m) | 8s |
| Afternoon (18 Aug) | 4ft (1.2m) | 8s |
| Evening (18 Aug) | 3.5ft (1.1m) | 8s |
Table - waves today at Threes. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 9mm), mostly falling on Wed morning. Warm (max 29°C on Tue morning, min 28°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 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) | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | WNW 9 | WNW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 217 | 190 | 190 | 190 | 160 | 161 | 165 | 140 | 140 | 140 | 143 | 143 | 143 | 138 | 172 | 75 | 106 | 103 | 106 | 103 | 101 | 99 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:50AM0.58m | 11:23PM0.69m | 1:07PM0.55m | 11:54PM0.67m | 2:40PM0.54m | |||||||||||||||||
Low Tide | 5:33AM0.15m | 5:16PM0.31m | 6:24AM0.12m | 5:58PM0.40m | 7:21AM0.10m | 6:52PM0.46m | ||||||||||||||||
 |  | |  |  | |  |  | | | | | | | | | | | | | | | |
 | 6:09 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:39 | — | — |
mm | 1 | — | — | — | — | — | — | 1 | 1 | 4 | 1 | — | — | — | 1 | — | — | — | — | 1 | — | — |
Temp °C | 27 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 28 |
Feels °C | 32 | 33 | 34 | 33 | 32 | 31 | 31 | 31 | 30 | 29 | 30 | 30 | 30 | 31 | 31 | 31 | 32 | 33 | 33 | 34 | 34 | 33 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | WNW 9 | WNW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 |
| kJ | 217 | 190 | 190 | 190 | 160 | 161 | 165 | 140 | 140 | 140 | 143 | 143 | 143 | 138 | 172 | 75 | 106 | 103 | 106 | 103 | 101 | 99 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SE 9 | SE 9 | SE 9 | SE 9 | WSW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SSE 9 | WNW 8 |
| kJ | 31 | 41 | 40 | 30 | 30 | 58 | 55 | 55 | 55 | 55 | 55 | 70 | 70 | 68 | 68 | 75 | 72 | 55 | 55 | 55 | 53 | 39 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | WSW 8 | SE 9 | SE 9 | SSE 9 | NNE 6 | SSE 9 | WNW 8 | SSE 9 |
| kJ | 13 | 13 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 26 | 67 | 67 | 54 | 25 | 52 | 55 | 52 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNW 2 | NW 3 | NNW 4 | NW 4 | NNW 4 | NNW 4 | NNW 5 | — | NE 3 | N 5 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 1 | 2 | 8 | 16 | 25 | 18 | 19 | — | 2 | 12 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 2056 | 2056 | 14 | 14 | 14 | 1270 | 2056 | 2056 | 2483 | 2064 | 2051 | 9 | 2054 | 1971 | 2056 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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