Ylig Surf Forecast

/ Guam (16 surf breaks) /

Guam (16 surf breaks)

Surf Forecasts:

Ylig surfForecast / Guam / Guam

12 Day Weather and Surf, issued 9 am Thursday 18 Sep 2025 ChST

Forecast update in hr min s Forecast update imminent

Ylig surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Ylig sea temperature is 29.7° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Ylig this week:

The surf forecast for Ylig over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 22) at 4AM. The primary swell is predicted to be 0.9m and 8s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Ylig in the next 12 days are 1.4m 9s and forecast to arrive on Tuesday (Sep 23) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 12s period and expected on Thursday (Sep 25) at 1PM.

Wave Type	Time (ChST) & Date	Wave Height & Period
Next good surf (1 star+)	4AM (Mon 22nd Sep)	3ft (0.9m) 8s
Best Surf	1AM (Tue 23rd Sep)	4.5ft (1.4m) 9s
Most Powerful	1AM (Tue 23rd Sep)	4.5ft (1.4m) 9s

Table - best surf conditions forecast for Ylig over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Heavy rain (total 26mm), heaviest during Sat night. Warm (max 29°C on Sat morning, min 27°C on Thu night). Wind will be generally light.									Days 3-6 Weather Summary Heavy rain (total 24mm), heaviest during Mon night. Warm (max 28°C on Sun morning, min 26°C on Mon night). Wind will be generally light.
	Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SE	ESE	ESE	ESE	SE	ESE	ENE	ENE	E	E	ESE	ESE	E	E	SE	SE	E	E	E	E	E
Period(s) (?)	10	10	5	8	9	7	5	5	7	6	6	6	7	7	9	9	9	8	8	8	9
Wave Graph (?)
kJ (?)	27	36	40	28	51	38	40	31	66	68	70	56	43	58	307	65	93	78	80	66	54
Wind (km/h)	NE	E	E	N	NNE	NE	ENE	ENE	ENE	ESE	SE	SE	ENE	SE	SW	S	S	S	S	SSW	SSW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	on	cross- off	cross	cross- on	cross- on	cross- on	cross- on	on	cross- on	cross- on	cross- on	cross- on	cross- off	cross	cross- on	cross- on	cross	cross	cross
High Tide / height (m)		6:01PM 0.47		4:02AM 0.47	6:31PM 0.47		5:07AM 0.46	6:55PM 0.47		6:05AM 0.45		7:14PM 0.47	7:01AM 0.44		7:30PM 0.47	7:56AM 0.43		7:44PM 0.47	8:52AM 0.42		7:57PM 0.46
Low Tide / height (m)	10:40AM -0.09		11:03PM 0.31	11:30AM -0.05		11:56PM 0.27	12:13PM -0.01		12:43AM 0.22	12:51PM 0.05		1:24AM 0.17		1:25PM 0.12	2:02AM 0.12		1:56PM 0.18	2:37AM 0.08		2:28PM 0.24	3:11AM 0.05

	Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
Sunrise	6:09	-	-	6:09	-	-	6:09	-	-	6:09	-	-	6:09	-	-	6:09	-	-	6:09	-	-
Sunset	-	6:20	-	-	6:19	-	-	6:19	-	-	6:17	-	-	6:16	-	-	6:15	-	-	6:15	-

Rain (mm)	-	1	3	4	1	3	4	2	8	1	-	-	-	2	8	6	3	4	5	7	2
Temp. °C	28	28	28	28	28	28	29	29	28	28	27	27	28	28	27	28	28	28	28	27	28
Feels °C (?)	32	29	29	30	28	29	31	32	31	28	28	29	31	31	29	30	31	31	30	28	30

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

Recent Eyeball Surf Reports for Guam

Wind Update Continuing clean conditions at Ylig (calm at Windward Hills wx 4 km from Ylig). 0.7m 5s windswell from the SE with a 0.4m 8s swell from the ENE and a 0.3m 11s groundswell from the E. 3 swells combining to make bigger set waves.
57 minutes ago Ylig

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Actual: 57 min ago

2 km/h

Clean

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ylig 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.

Information about the Ylig Surf forecast

The above surf forecast table for Ylig provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Ylig can be found by selecting the local surf guide option on the grey menu. Our Ylig surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ylig) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Ylig may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Ylig is 10 km (6 miles) from Agana. If you plan a holiday in Guam, look for hotels and other accommodation in Agana. Agana has rooms for a wide range of budgets as well as car hire and transport links.