Threes Surf Forecast

/ Guam (16 surf breaks) /

Guam (16 surf breaks)

Surf Forecasts:

Threes surfForecast / Guam / Guam

48hr Weather and Surf, issued 9 am Wednesday 20 May 2026 ChST

Forecast 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 28.8° C
(Which is normal for this time of year)

How big are the waves at Threes today?

The current surf forecast for Threes at 4PM is: 0.1m 11s primary swell from a North direction (forecast issued at 09:00am May 20). An open ocean swell of 2.1m 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 (20 May)	0.5ft (0.1m)	11s
Afternoon (20 May)	0.5ft (0.1m)	11s
Evening (20 May)	0.5ft (0.1m)	10s

Table - waves today at Threes. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

	Short Range Forecast Moderate rain (total 10mm), heaviest on Wed morning. Warm (max 28°C on Wed morning, min 27°C on Wed morning). Mainly fresh winds.
	Wednesday 20						Thursday 21								Friday 22								Sat 23
	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
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	N 11	N 11	N 11	N 11	N 10	NE 10	N 10	NE 10	N 13	NE 9	NE 12	NE 12	N 12	NE 12	NE 11	NE 11	N 5	NNE 11	NNE 11	NNE 10	NNE 10	NNE 10	NNE 10	NNE 10
Wave Graph
kJ	3	2	3	2	2	4	2	4	4	3	6	6	3	6	5	5	5	11	11	10	9	9	10	9
Wind (km/h)	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	E	E	E	E	ENE	ENE	ENE	ENE	ENE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	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		8:43AM0.76m					00:09AM0.77m			9:37AM0.71m						1:07AM0.76m			10:41AM0.65m					2:01AM0.75m
Low Tide	4:02AM0.54m				4:23PM-0.22m				5:07AM0.54m				5:19PM-0.16m				6:24AM0.52m				6:17PM-0.08m


	5:54	—	—	—	—	—	—	5:54	—	—	—	—	—	—	—	5:54	—	—	—	—	—	—	—	5:54
	—	—	—	6:40	—	—	—	—	—	—	—	6:40	—	—	—	—	—	—	—	6:40	—	—	—	6:40
mm	1	2	1	1	—	—	—	—	—	1	—	1	1	1	1	—	—	—	—	—	—	—	—	1
Temp °C	27	27	28	28	27	27	27	27	27	27	28	28	28	27	27	27	27	28	28	28	28	27	27	27
Feels °C	27	26	28	28	27	26	26	27	27	27	29	29	30	28	29	29	28	29	30	29	30	28	29	29
Swell 1 Height (m) Direction Period (s)	NE 9	N 11	NE 9	N 11	N 10	NE 10	N 10	NE 10	NE 10	NE 9	N 9	NE 9	NE 9	NE 9	SE 12	SE 12	N 5	NNE 11	NNE 11	NNE 10	NNE 10	NNE 10	NNE 10	E 9
kJ	3	2	3	2	2	4	2	4	4	3	2	3	3	3	6	6	5	11	11	10	9	9	10	413
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	NE 12	N 12	NE 12	NE 9	NE 11	NE 11	N 9	NNE 11	—	S 11	S 11	S 10	NNE 10
kJ	2	2	2	—	—	2	2	2	2	2	6	6	3	6	3	5	5	1	11	—	2	2	2	9
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	N 13	—	S 9	S 9	S 9	S 8	NE 11	N 9	N 9	—	—	—	S 11	—	—	S 10
kJ	—	—	—	—	—	—	—	—	3	—	2	2	2	1	5	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	—
kJ	656	723	723	715	699	699	766	749	699	699	627	580	521	529	473	465	413	413	404	404	395	395	404	—
Nearest Offshore or Glassy	Lidos Left Sandaun	Lidos Left Sandaun	Tarawai East Sepik	Tarawai East Sepik	Sissano Lagoon Sandaun	Wutung Village Reef Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Tarawai East Sepik	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun	Lidos Left Sandaun
Rating (10 max)	1	1	1	1	1	1	1	1	1	2	2	1	2	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	1810	1810	1838	1838	1833	1810	1810	1810	1810	1810	1810	1838	1810	1810	1810	1810	1810	1810	1810	1810	1810	1810	1810	1810
Best forecast wave conditions in Guam
Rating (10 max)
Best forecast wave conditions in Guam
Rating (10 max)
Header Global	Afife Portugal	Cavalos de Fao Portugal	Cavalos de Fao Portugal	Crazy Left Portugal	Canal Brazil	Anglet - Corsaires France	Anglet - Corsaires France	Trial Harbour Australia	Trial Harbour Australia	Tahai Chile	Tahai Chile	Tahai Chile	Lambe Lambe Brazil	Tahai Chile	Bali Village Indonesia	Bali Village Indonesia	Blaketown Wedge New Zealand	Barra de Guaratiba Brazil	Itaúna Brazil	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	Easter Reef Australia
Rating (10 max)	4	5	5	5	5	4	4	5	5	5	5	5	5	5	4	4	4	4	5	7	7	7	7	5

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Latest Updates

Ben Mondy

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Threes surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

Threes Surf Forecast

Threes surfForecast / Guam / Guam

How big are the waves at Threes today?

Short Range Forecast

Latest Updates

Let Our Surf Alerts Do All Your Forecast Heavy Lifting

Talking To Maddie Meddings on New Film Undercurrents. (And Then Watch It!)

The roadsurfer VanLife Taster Menu

Cyclone Vainau Smashes NZ and Bells Gears Up for 50-year Storm*

Get €100 Off Your Next Personalised, Expert-Planned Trip with Tourlane

FREE! Surf-Forecast.com widget for your website