Surf Forecasts:
How big are the waves at Umatac today (04 Sep):
- Morning surf: Morning surf (04 Sep, local time) - 7.5ft (2.3m), 9s period with W swell.
- Afternoon surf: Afternoon surf (04 Sep, local time) - 7ft (2.1m), 9s period with W swell.
- Evening surf: Evening surf (04 Sep, local time) - 6ft (1.9m), 9s period with W swell.
The current surf forecast for Umatac at 2PM is: 2.2m 9s primary swell from a West direction (forecast issued at 09:00am September 04). An open ocean swell of 0.4m 8s is not directed at the surf break, a second 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 (04 Sep) | 7.5ft (2.3m) | 9s |
| Afternoon (04 Sep) | 7ft (2.1m) | 9s |
| Evening (04 Sep) | 6ft (1.9m) | 9s |
Table - waves today at Umatac. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 15mm), heaviest on Sun morning. Warm (max 29°C on Fri morning, min 26°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||||||||
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 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | WNW 9 | W 9 | WNW 9 | WNW 8 | W 8 | W 8 | W 8 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 1085 | 818 | 788 | 718 | 637 | 580 | 580 | 517 | 473 | 484 | 442 | 363 | 304 | 290 | 239 | 270 | 224 | 386 | 378 | 426 | 530 | 433 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | glassy | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:21PM0.60m | 11:45PM0.69m | 4:09PM0.63m | 00:50AM0.67m | 5:23PM0.67m | |||||||||||||||||
Low Tide | 6:39AM0.00m | 6:25PM0.52m | 7:52AM-0.02m | 8:05PM0.56m | 9:10AM-0.04m | 9:58PM0.56m | ||||||||||||||||
 |  | | |  | | |  | |  | | |  |  | | | | | |  | | | |
 | 6:09 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:29 | — | — |
mm | — | — | — | — | — | — | — | — | — | 3 | 2 | 2 | 2 | — | — | — | 1 | 4 | 1 | — | — | — |
Temp °C | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 26 | 27 | 27 |
Feels °C | 28 | 29 | 29 | 30 | 29 | 30 | 30 | 30 | 31 | 31 | 31 | 33 | 32 | 32 | 32 | 31 | 31 | 31 | 28 | 26 | 28 | 29 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | SE 8 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | WNW 9 | W 9 | WNW 9 | WNW 8 | W 8 | W 8 | W 8 | WNW 10 | WNW 10 | SE 10 | WNW 10 | WNW 10 |
| kJ | 1085 | 818 | 16 | 718 | 637 | 580 | 580 | 517 | 473 | 484 | 442 | 363 | 304 | 290 | 239 | 270 | 224 | 386 | 378 | 59 | 530 | 433 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SSE 8 | NE 9 | SE 8 | SE 8 | SSE 8 | SSE 8 | SE 8 | SE 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | WNW 10 | SE 10 | SE 10 | ENE 9 | SE 10 | SE 10 |
| kJ | 20 | 23 | 21 | 18 | 18 | 26 | 27 | 35 | 35 | 35 | 48 | 79 | 61 | 61 | 60 | 41 | 94 | 59 | 59 | 15 | 59 | 58 |
Swell 3 Height (m) Direction Period (s) | NE 8 | NE 8 | ESE 12 | NE 9 | NE 9 | SE 11 | SE 11 | SE 11 | SE 11 | SSE 8 | SSE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 9 | SE 10 | SE 10 | ENE 9 | ENE 9 | ENE 12 | ENE 9 | ENE 8 |
| kJ | 11 | 11 | 13 | 21 | 21 | 30 | 29 | 29 | 29 | 26 | 24 | 16 | 16 | 14 | 15 | 27 | 60 | 15 | 15 | 15 | 15 | 14 |
Wind waves Height (m) Direction Period (s) | S 6 | S 6 | W 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 10 | — | — |
| kJ | 48 | 32 | 788 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 426 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 1813 | 1813 | 2055 | 2051 | 255 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 0 | 13 | 13 | 13 | 13 | 13 | 1271 | 17 | 1271 | 13 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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