Surf Forecasts:
How big are the waves at Threes today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 2.5ft (0.7m), 7s period with NE swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 1.5ft (0.5m), 8s period with WSW swell.
- Evening surf: Evening surf (21 Aug, local time) - 2ft (0.6m), 8s period with NNE swell.
The current surf forecast for Threes at 5PM is: 0.5m 8s primary swell from a West-southwest direction and 0.6m 7s secondary swell from a Northeast direction (forecast issued at 09:00am August 21). An open ocean swell of 1.0m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 2.5ft (0.7m) | 7s |
| Afternoon (21 Aug) | 1.5ft (0.5m) | 8s |
| Evening (21 Aug) | 2ft (0.6m) | 8s |
Table - waves today at Threes. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 37mm), heaviest during Sat night. Warm (max 29°C on Fri morning, min 28°C on Fri morning). Winds increasing (calm on Fri morning, fresh winds from the SSW by Sun night). | ||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||||||||
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) | NE 7 | WSW 8 | NE 6 | NE 7 | E 9 | NNE 8 | SW 8 | NE 8 | WSW 8 | NE 9 | NE 10 | NE 10 | NE 9 | NE 9 | NNE 9 | NNE 10 | NNE 10 | NNE 10 | N 11 | SW 9 | SW 8 | SW 8 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 51 | 51 | 39 | 37 | 0 | 47 | 69 | 35 | 23 | 216 | 208 | 160 | 106 | 86 | 75 | 109 | 100 | 141 | 240 | 905 | 844 | 771 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross-off | cross |
High Tide | 4:17PM0.56m | 1:25AM0.63m | 5:28PM0.60m | 2:30AM0.62m | 6:15PM0.63m | |||||||||||||||||
Low Tide | 8:25AM0.09m | 8:12PM0.51m | 9:28AM0.07m | 9:45PM0.52m | 10:27AM0.04m | |||||||||||||||||
 |  | |  |  | | | | | | | |  |  | | | | | | | | | |
 | 6:09 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | — | — | — | 2 | — | — | — | — | 1 | 1 | 1 | 2 | 3 | 6 | 3 | 2 | 3 | 2 | 1 | 2 | 3 | 1 |
Temp °C | 28 | 28 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 |
Feels °C | 33 | 34 | 34 | 33 | 33 | 32 | 30 | 30 | 30 | 31 | 30 | 28 | 28 | 28 | 28 | 27 | 28 | 29 | 29 | 29 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 6 | E 10 | E 10 | E 9 | E 9 | E 9 | SSE 9 | SSE 9 | SSE 9 | S 9 | NE 10 | NE 9 | NE 9 | NNE 9 | NNE 10 | NNE 10 | NNE 10 | N 11 | SSE 8 | SE 8 | SE 9 |
| kJ | 43 | 41 | 167 | 190 | 166 | 241 | 180 | 237 | 274 | 322 | 442 | 160 | 106 | 86 | 75 | 109 | 100 | 141 | 240 | 193 | 166 | 182 |
Swell 2 Height (m) Direction Period (s) | WSW 8 | WSW 8 | NE 6 | NE 7 | E 13 | SE 10 | SSE 9 | ENE 9 | ENE 9 | NE 9 | NE 10 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | ENE 13 | ENE 12 | SE 9 | N 11 | N 11 | N 11 |
| kJ | 51 | 51 | 39 | 35 | 121 | 92 | 110 | 135 | 165 | 216 | 208 | 26 | 26 | 14 | 22 | 13 | 33 | 30 | 147 | 237 | 185 | 185 |
Swell 3 Height (m) Direction Period (s) | ESE 13 | W 9 | WSW 8 | WSW 8 | SSE 8 | NNE 8 | NNE 8 | NE 8 | WSW 8 | WNW 8 | WNW 9 | E 13 | E 13 | E 13 | NNE 12 | ENE 13 | WNW 8 | NE 9 | ENE 12 | ENE 12 | ENE 12 | ENE 12 |
| kJ | 127 | 45 | 37 | 37 | 46 | 47 | 44 | 35 | 23 | 22 | 27 | 14 | 14 | 14 | 26 | 34 | 12 | 3 | 29 | 49 | 50 | 50 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SW 3 | SW 8 | — | S 6 | WSW 7 | WSW 7 | S 9 | S 8 | S 8 | SSW 8 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SW 9 | SW 8 | SW 8 |
| kJ | — | — | — | — | — | 2 | 69 | — | 1 | 21 | 20 | 641 | 737 | 819 | 1027 | 1175 | 1123 | 1230 | 1055 | 905 | 844 | 771 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 14 | 0 | 14 | 14 | 14 | 2052 | 2051 | 1971 | 2051 | 1971 | 2440 | 2448 | 2408 | 2408 | 2284 | 2192 | 1810 | 1810 | 2256 | 2056 | 1940 | 1840 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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