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Surf Forecasts:
Threes surfForecast / Guam / Guam
48hr Weather and Surf, issued 9 am Tuesday 19 May 2026 ChSTForecast update in hr min s Forecast update imminent
Threes surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Threes sea temperature is
28.7° C
(Which is normal for this time of year)How big are the waves at Threes today?
The current surf forecast for Threes at 1PM is: 0.1m 10s primary swell from a North direction (forecast issued at 09:00am May 19). An open ocean swell of 2.0m 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 (19 May) | 0.5ft (0.1m) | 9s |
| Afternoon (19 May) | 0.5ft (0.1m) | 10s |
| Evening (19 May) | 0.5ft (0.1m) | 9s |
Table - waves today at Threes. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 15mm), heaviest on Thu night. Warm (max 28°C on Tue morning, min 27°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | Fri 22 | |||||||||||||||||||||
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 | 1 AM | 4 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NE 9 | NE 9 | N 10 | N 10 | N 9 | N 9 | NE 9 | NE 9 | N 11 | N 11 | N 11 | N 11 | N 10 | NE 10 | NE 10 | NE 10 | NNE 10 | NE 9 | NE 12 | N 12 | N 12 | NE 12 | N 9 | NE 11 | |
3 | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 4 | 4 | 4 | 9 | 3 | 6 | 3 | 3 | 5 | 2 | 5 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 7:56AM0.78m | 11:09PM0.78m | 8:43AM0.76m | 00:09AM0.77m | 9:37AM0.71m | 1:07AM0.76m | ||||||||||||||||||
Low Tide | 3:30PM-0.25m | 4:02AM0.54m | 4:23PM-0.22m | 5:07AM0.54m | 5:19PM-0.16m | |||||||||||||||||||
 |  | | |  |  |  | | | | | | | | | |  | | | | | | | | |
 | 5:54 | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 |
 | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:40 | — | — | — | 6:40 |
— | 1 | — | — | — | — | 1 | 1 | — | 1 | 1 | 1 | — | 1 | — | 1 | — | — | — | 1 | 1 | 1 | — | 2 | |
Temp °C | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 |
27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 30 | 29 | 29 | 28 | |
Swell 1 Height (m) Direction Period (s) | NE 9 | NE 9 | N 10 | N 10 | N 9 | N 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | N 11 | N 10 | NE 10 | NE 10 | NE 10 | NNE 10 | NE 9 | NE 9 | N 9 | NE 9 | NE 9 | N 9 | SE 12 |
 kJ | 3 | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 4 | 4 | 4 | 9 | 3 | 3 | 2 | 3 | 3 | 2 | 6 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | N 11 | N 11 | N 11 | — | — | S 9 | S 9 | S 9 | S 9 | S 9 | NE 12 | N 12 | N 12 | NE 12 | SE 12 | NE 11 |
| kJ | — | — | — | — | — | — | — | — | 2 | 2 | 2 | — | — | 2 | 2 | 2 | 2 | 2 | 6 | 3 | 3 | 5 | 6 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 9 | — | — | S 9 | S 9 | — | — | N 9 | N 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 2 | 2 | — | — | 2 | 2 |
Wind waves Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 |
| kJ | 739 | 670 | 670 | 739 | 739 | 723 | 723 | 723 | 723 | 723 | 723 | 731 | 715 | 650 | 715 | 699 | 699 | 699 | 699 | 635 | 575 | 521 | 529 | 517 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1270 | 1270 | 1810 | 1810 | 1810 | 1284 | 1810 | 1270 | 1810 | 1810 | 1810 | 1886 | 1270 | 1810 | 1810 | 1270 | 1270 | 1810 | 1810 | 1270 | 1810 | 1810 | 1810 | 1810 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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