Surf Forecasts:
How big are the waves at Threes today (19 Sep):
- Morning surf: Morning surf (19 Sep, local time) - 4.5ft (1.4m), 8s period with SW swell.
- Afternoon surf: Afternoon surf (19 Sep, local time) - 4.5ft (1.4m), 8s period with WSW swell.
- Evening surf: Evening surf (19 Sep, local time) - 4.5ft (1.4m), 8s period with SW swell.
The current surf forecast for Threes at 8AM is: 1.4m 8s primary swell from a Southwest direction (forecast issued at 03:00am September 19). An open ocean swell of 0.8m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Sep) | 4.5ft (1.4m) | 8s |
| Afternoon (19 Sep) | 4.5ft (1.4m) | 8s |
| Evening (19 Sep) | 4.5ft (1.4m) | 8s |
Table - waves today at Threes. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 47mm), heaviest during Sun night. Warm (max 29°C on Sat morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||||||||||
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 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NE 12 | NE 12 | NE 11 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 355 | 338 | 274 | 274 | 254 | 248 | 268 | 261 | 226 | 247 | 226 | 187 | 186 | 186 | 186 | 164 | 129 | 117 | 111 | 111 | 118 | 167 | 161 | 142 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | glassy | cross-off | off | off | off |
High Tide | 11:24PM0.61m | 3:31PM0.59m | 00:23AM0.59m | 4:36PM0.62m | 1:45AM0.58m | 5:21PM0.64m | ||||||||||||||||||
Low Tide | 7:24AM0.09m | 8:00PM0.52m | 8:32AM0.09m | 9:34PM0.51m | 9:36AM0.08m | |||||||||||||||||||
 | |  | | |  |  | |  | |  | | | | | | | | | | | | | | |
 | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:17 | — | — |
mm | 3 | 1 | 1 | 1 | 1 | — | — | 5 | 7 | 2 | — | — | 1 | 1 | 5 | 2 | 4 | 8 | — | — | 2 | 1 | — | 1 |
Temp °C | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 27 | 26 | 27 | 27 | 28 | 29 | 28 | 28 |
Feels °C | 30 | 32 | 32 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 33 | 32 | 31 | 32 | 34 | 32 | 29 | 30 | 30 | 32 | 32 | 31 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 7 | WSW 7 | SW 7 | SW 7 | SW 7 | SW 7 |
| kJ | 355 | 338 | 274 | 274 | 254 | 248 | 268 | 261 | 226 | 247 | 226 | 187 | 186 | 186 | 186 | 164 | 129 | 117 | 86 | 96 | 118 | 115 | 109 | 93 |
Swell 2 Height (m) Direction Period (s) | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | N 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NE 12 | NE 12 | NE 11 |
| kJ | 69 | 86 | 76 | 76 | 76 | 58 | 58 | 49 | 70 | 72 | 55 | 82 | 150 | 139 | 133 | 111 | 111 | 111 | 111 | 111 | 109 | 167 | 161 | 142 |
Swell 3 Height (m) Direction Period (s) | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | SSE 8 | SSE 8 | SE 8 | NE 10 | NE 10 | NE 11 | NE 11 | NE 11 | NE 11 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NNW 10 | NNW 10 | NNW 10 |
| kJ | 31 | 33 | 32 | 32 | 32 | 33 | 49 | 45 | 45 | 34 | 49 | 49 | 56 | 92 | 90 | 90 | 87 | 104 | 80 | 79 | 79 | 85 | 83 | 81 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 15 | 15 | 15 | 255 | 255 | 15 | 15 | 15 | 14 | 9 | 14 | 15 | 14 | 14 | 1 | 13 | 14 | 13 | 14 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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