Surf Forecasts:
How big are the waves at Threes today (20 Jul):
- Morning surf: Morning surf (20 Jul, local time) - 3ft (0.9m), 7s period with SW swell.
- Afternoon surf: Afternoon surf (20 Jul, local time) - 3ft (0.9m), 7s period with SW swell.
- Evening surf: Evening surf (20 Jul, local time) - 2.5ft (0.8m), 7s period with WSW swell.
The current surf forecast for Threes at 8AM is: 0.9m 7s primary swell from a Southwest direction (forecast issued at 03:00am July 20). An open ocean swell of 0.5m 9s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jul) | 3ft (0.9m) | 7s |
| Afternoon (20 Jul) | 3ft (0.9m) | 7s |
| Evening (20 Jul) | 2.5ft (0.8m) | 7s |
Table - waves today at Threes. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 21mm), heaviest during Wed night. Warm (max 29°C on Mon afternoon, min 27°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||||||||||
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) | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | SW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SSW 7 | SW 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 73 | 77 | 91 | 71 | 82 | 73 | 64 | 64 | 62 | 50 | 42 | 42 | 51 | 56 | 79 | 77 | 77 | 53 | 53 | 53 | 51 | 51 | 0 | 53 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-off | cross-off | cross | cross | on | cross | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 00:03AM0.74m | 11:59AM0.56m | 00:34AM0.72m | 1:26PM0.52m | 1:07AM0.70m | 3:06PM0.52m | ||||||||||||||||||
Low Tide | 6:24AM0.25m | 5:55PM0.20m | 7:23AM0.19m | 6:40PM0.31m | 8:22AM0.13m | 7:34PM0.41m | ||||||||||||||||||
 | |  |  | |  |  | | | | | | | | | | | | | | | | |  | |
 | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:51 | — | — |
mm | — | — | 1 | — | — | — | 2 | 1 | 1 | 1 | — | — | 1 | 1 | 1 | — | — | — | 1 | — | — | 1 | 1 | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 32 | 31 | 31 | 30 | 30 | 32 | 31 | 32 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 31 | 31 | 30 | 30 | 29 | 29 | 29 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | SW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SE 10 | SW 7 |
| kJ | 73 | 77 | 91 | 71 | 82 | 73 | 64 | 64 | 62 | 50 | 42 | 42 | 51 | 56 | 79 | 77 | 77 | 53 | 53 | 53 | 51 | 51 | 60 | 53 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | SSE 7 | E 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | E 9 | SSE 9 | E 9 | E 9 | E 9 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | ENE 9 | SE 10 |
| kJ | 42 | 43 | 44 | 29 | 45 | 47 | 47 | 47 | 47 | 42 | 55 | 41 | 41 | 41 | 53 | 73 | 119 | 73 | 71 | 64 | 63 | 61 | 27 | 59 |
Swell 3 Height (m) Direction Period (s) | SSE 8 | SSE 10 | SSE 8 | E 10 | SSE 7 | E 9 | E 9 | E 9 | E 9 | SE 9 | E 9 | SE 9 | SE 10 | SE 10 | E 9 | E 9 | E 9 | S 6 | E 9 | E 9 | ENE 9 | ENE 9 | SE 17 | ENE 9 |
| kJ | 26 | 37 | 24 | 46 | 20 | 43 | 42 | 42 | 42 | 29 | 42 | 30 | 33 | 35 | 41 | 41 | 41 | 15 | 41 | 41 | 27 | 27 | 43 | 27 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | ENE 2 | ENE 3 | E 3 | ENE 3 | E 3 | SE 5 | SE 5 | SE 5 | SE 4 | SSW 7 | SSE 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 3 | 4 | 2 | 28 | 31 | 30 | 24 | 105 | 77 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 13 | 26 | 0 | 13 | 14 | 3 | 26 | 26 | 2063 | 0 | 0 | 2188 | 0 | 0 | 0 | 0 | 0 | 1940 | 2268 | 2063 | 2063 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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