Surf Forecasts:
How big are the waves at Umatac today (19 Oct):
- Afternoon surf: Afternoon surf (19 Oct, local time) - 4.5ft (1.4m), 10s period with WSW swell.
- Evening surf: Evening surf (19 Oct, local time) - 5ft (1.6m), 10s period with SW swell.
The current surf forecast for Umatac at 8PM is: 1.5m 10s primary swell from a West-southwest direction and 0.6m 10s secondary swell from a West direction (forecast issued at 03:00pm October 19). An open ocean swell of 2.2m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Oct) | - | - |
| Afternoon (19 Oct) | 4.5ft (1.4m) | 10s |
| Evening (19 Oct) | 5ft (1.6m) | 10s |
Table - waves today at Umatac. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Mon afternoon. Warm (max 28°C on Tue morning, min 26°C on Mon afternoon). Wind will be generally light. | ||||||||||||||||||||
Mon 19 | Tuesday 20 | Wednesday 21 | ||||||||||||||||||
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) | WSW 9 | WSW 10 | WSW 10 | WSW 10 | SW 10 | SW 10 | SW 11 | W 11 | W 11 | SW 9 | SW 9 | SW 9 | SW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WNW 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 387 | 371 | 356 | 522 | 407 | 524 | 1401 | 298 | 154 | 491 | 393 | 359 | 294 | 270 | 258 | 244 | 194 | 194 | 188 | 293 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:32PM0.65m | 00:55AM0.54m | 4:14PM0.66m | 2:32AM0.54m | 4:46PM0.68m | |||||||||||||||
Low Tide | 9:11PM0.48m | 8:33AM0.10m | 10:06PM0.43m | 9:31AM0.11m | ||||||||||||||||
 | |  | | | |  |  | | |  |  | | | | | | | | | |
 | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 5:59 | — | — |
mm | 3 | 2 | 3 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 28 | 27 | 27 | 27 |
Feels °C | 26 | 26 | 27 | 28 | 28 | 28 | 29 | 29 | 31 | 32 | 30 | 31 | 30 | 30 | 29 | 29 | 31 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | WSW 10 | WSW 10 | WSW 10 | SW 10 | SW 10 | SW 11 | SSW 9 | SW 10 | SW 9 | SW 9 | SW 9 | SW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WNW 12 |
| kJ | 387 | 371 | 356 | 522 | 407 | 524 | 1401 | 579 | 587 | 491 | 393 | 359 | 294 | 270 | 258 | 244 | 194 | 194 | 188 | 293 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | W 11 | W 10 | ENE 9 | W 11 | W 11 | ENE 9 | W 11 | W 11 | W 11 | W 11 | W 11 | NE 8 | NE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 9 | ENE 9 | WSW 9 |
| kJ | 71 | 146 | 76 | 70 | 149 | 85 | 70 | 298 | 154 | 121 | 121 | 86 | 74 | 75 | 94 | 94 | 92 | 141 | 147 | 151 |
Swell 3 Height (m) Direction Period (s) | W 11 | ENE 9 | ENE 9 | W 12 | ENE 9 | ENE 9 | SE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | W 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | NNE 10 |
| kJ | 82 | 71 | 53 | 67 | 53 | 70 | 47 | 70 | 70 | 68 | 70 | 67 | 85 | 93 | 126 | 158 | 123 | 158 | 167 | 72 |
Wind waves Height (m) Direction Period (s) | S 9 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 7 | — | — | SE 7 | — | — | — | — | — | — | ENE 3 | ENE 3 | — | — | ENE 8 |
| kJ | 1173 | 925 | 659 | 438 | 378 | 243 | — | — | 88 | — | — | — | — | — | — | 1 | 4 | — | — | 103 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2051 | 2051 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1813 | 1892 | 1841 | 1841 | 1271 |
Best forecast wave conditions in Guam | ||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||
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