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Surf Forecasts:
Threes surfForecast / Guam / Guam
48hr Weather and Surf, issued 9 am Tuesday 12 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 3PM is: 0.1m 10s primary swell from a Northwest direction (forecast issued at 09:00am May 12). An open ocean swell of 1.5m 9s is not directed at the surf break, a second open ocean swell of 0.3m 11s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | - | - |
| Afternoon (12 May) | 0.5ft (0.1m) | 10s |
| Evening (12 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 14mm), heaviest on Wed night. Warm (max 28°C on Tue morning, min 27°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | Fri 15 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
E 9 | E 9 | E 9 | NW 10 | NW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | N 7 | N 7 | |
0 | 0 | 0 | 4 | 3 | 8 | 7 | 15 | 14 | 13 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | glassy | glassy | off | off | off | off | off | off | off | off | off | off | cross-off | |
High Tide | 3:38PM0.55m | 4:27AM0.71m | 4:59PM0.60m | 4:55AM0.73m | 6:10PM0.65m | |||||||||||||||||||
Low Tide | 10:14AM0.31m | 9:47PM0.18m | 10:57AM0.19m | 10:43PM0.24m | 11:39AM0.07m | 11:36PM0.31m | ||||||||||||||||||
 |  |  | |  | | | | | | | | |  | | | | | | | | | | | |
 | 5:56 | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:54 |
 | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:38 | — | — | — | 6:38 |
2 | — | — | — | 2 | 1 | 2 | 1 | — | — | — | 1 | 1 | — | — | — | 3 | 2 | — | — | — | — | — | 1 | |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 |
31 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 32 | 33 | 33 | 33 | 33 | 32 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 29 | 29 | 28 | |
Swell 1 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 | SE 12 | SE 12 |
 kJ | 501 | 434 | 373 | 373 | 373 | 325 | 325 | 325 | 280 | 280 | 280 | 241 | 241 | 241 | 241 | 202 | 202 | 202 | 202 | 198 | 196 | 164 | 53 | 53 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | SE 11 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SSW 6 | SSW 6 | SSW 6 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SE 10 | SE 10 | SE 13 | SE 10 | S 6 | S 6 |
| kJ | 6 | 5 | 21 | 19 | 17 | 31 | 30 | 19 | 30 | 30 | 30 | 10 | 17 | 17 | 17 | 9 | 9 | 5 | 28 | 28 | 28 | 17 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | NW 10 | NW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 5 | SE 14 | SE 10 | SE 13 | N 7 | N 7 |
| kJ | 3 | 3 | 3 | 4 | 3 | 8 | 7 | 15 | 14 | 13 | 13 | 29 | 27 | 27 | 26 | 27 | 27 | 28 | 2 | 29 | 17 | 27 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 3 | E 9 | E 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 229 | 268 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 23 | 1270 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 14 | 14 | 14 | 14 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 25 | 1810 | 1810 | 1810 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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