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Surf Forecasts:
Threes surfForecast / Guam / Guam
48hr Weather and Surf, issued 3 am Friday 29 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 (29 May):
- Morning surf: Morning surf (29 May, local time) - 5ft (1.6m), 10s period with SW swell.
- Afternoon surf: Afternoon surf (29 May, local time) - 5ft (1.6m), 10s period with SW swell.
- Evening surf: Evening surf (29 May, local time) - 4.5ft (1.3m), 9s period with WSW swell.
The current surf forecast for Threes at 8AM is: 1.6m 10s primary swell from a Southwest direction and 0.5m 12s secondary swell from a West-southwest direction (forecast issued at 03:00am May 29). An open ocean swell of 1.3m 9s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 3.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 May) | 5ft (1.6m) | 10s |
| Afternoon (29 May) | 5ft (1.6m) | 10s |
| Evening (29 May) | 4.5ft (1.3m) | 9s |
Table - waves today at Threes. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 6mm), mostly falling on Fri night. Warm (max 28°C on Fri morning, min 27°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 29 | Saturday 30 | Sunday 31 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | WSW 9 | WSW 9 | SW 8 | WSW 8 | SW 8 | WSW 8 | W 10 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 10 | W 9 | W 10 | W 10 | |
489 | 489 | 456 | 557 | 507 | 461 | 353 | 270 | 211 | 162 | 73 | 78 | 72 | 117 | 106 | 103 | 101 | 115 | 118 | 104 | 113 | 142 | 202 | 133 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | off | off | off | cross-off | off | off | off | off | off | cross-off | |
High Tide | 5:33AM0.71m | 7:58PM0.66m | 6:00AM0.70m | 8:42PM0.68m | 6:28AM0.69m | 9:21PM0.69m | ||||||||||||||||||
Low Tide | 00:04AM0.41m | 12:47PM-0.03m | 00:50AM0.45m | 1:21PM-0.06m | 1:32AM0.48m | 1:53PM-0.08m | ||||||||||||||||||
 | |  |  | | |  | | | | | | | | | | | | |  | | |  | | |
 | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:44 | — | — |
1 | 1 | 2 | — | — | — | — | — | — | 1 | 2 | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — | |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 27 |
31 | 30 | 30 | 29 | 29 | 29 | 31 | 31 | 29 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 30 | 29 | 29 | 29 | 31 | 31 | 31 | 29 | |
Swell 1 Height (m) Direction Period (s) | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | WSW 9 | WSW 9 | SW 8 | WSW 8 | SW 8 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | W 10 | W 10 |
 kJ | 489 | 489 | 456 | 557 | 507 | 461 | 353 | 270 | 211 | 162 | 73 | 78 | 239 | 242 | 196 | 196 | 192 | 194 | 194 | 190 | 190 | 190 | 202 | 118 |
Swell 2 Height (m) Direction Period (s) | NNE 12 | NNE 12 | WSW 12 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | SW 8 | W 9 | WSW 8 | W 10 | W 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | W 9 | E 10 | WNW 11 |
| kJ | 56 | 56 | 82 | 51 | 49 | 47 | 47 | 47 | 46 | 46 | 63 | 43 | 72 | 117 | 106 | 93 | 95 | 115 | 118 | 100 | 98 | 142 | 186 | 133 |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 12 | NNE 12 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 11 | SE 11 | NNE 11 | W 8 | SW 8 | SW 8 | SW 8 | W 9 | W 9 | W 9 | W 9 | W 9 | W 10 | SW 8 | SW 8 | SW 8 |
| kJ | 35 | 34 | 55 | 29 | 29 | 18 | 28 | 28 | 18 | 18 | 46 | 33 | 51 | 61 | 63 | 103 | 101 | 99 | 97 | 104 | 113 | 78 | 65 | 64 |
Wind waves Height (m) Direction Period (s) | E 9 | E 8 | E 8 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | — | — | — | — | — | — | — | — | — | — | — | E 10 |
| kJ | 214 | 241 | 241 | 247 | 313 | 326 | 279 | 279 | 279 | 284 | 284 | 284 | — | — | — | — | — | — | — | — | — | — | — | 186 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 14 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 0 | 0 | 0 | 1270 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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