Mangandas Surf Forecast

/ Guam (16 surf breaks) /

Guam (16 surf breaks)

Surf Forecasts:

Mangandas surfForecast / Guam / Guam

12 Day Weather and Surf, issued 9 am Thursday 04 Sep 2025 ChST

Forecast update in hr min s Forecast update imminent

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

Today's Mangandas sea temperature is 29.6° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Mangandas this week:

The most powerful waves expected at Mangandas in the next 12 days are 0.8m 13s and forecast to arrive on Wednesday (Sep 10) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 10s period and expected on Thursday (Sep 11) at 1PM.

Wave Type	Time (ChST) & Date	Wave Height & Period
Next good surf (1 star+)	-	-
Best Surf	-	-
Most Powerful	7AM (Wed 10th Sep)	2.5ft (0.8m) 13s

Table - best surf conditions forecast for Mangandas 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 Fri morning. Warm (max 29°C on Thu afternoon, min 28°C on Thu morning). Wind will be generally light.									Days 3-6 Weather Summary Moderate rain (total 19mm), heaviest on Sun afternoon. Warm (max 29°C on Sun morning, min 28°C on Sun morning). Wind will be generally light.
	Thursday 04			Friday 05			Saturday 06			Sunday 07			Monday 08			Tuesday 09			Wednesday 10
	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	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	W	W	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE
Period(s) (?)	8	7	12	11	11	11	11	11	11	10	11	11	11	10	10	16	16	14	13	12	12
Wave Graph (?)
Energy (?)	58	27	60	49	79	75	72	67	48	43	37	22	22	10	10	36	107	161	192	169	161
Wind (km/h)	E	ENE	E	E	E	E	ESE	E	NE	ENE	SE	ESE	E	ENE	E	E	E	E	E	E	E
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross	cross- off	off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off
High Tide / height (m)		6:35PM 0.69		4:38AM 0.67		7:04PM 0.72	5:35AM 0.72		7:31PM 0.74	6:28AM 0.76		7:58PM 0.76	7:20AM 0.78		8:23PM 0.78	8:14AM 0.79		8:49PM 0.78	9:10AM 0.78		9:16PM 0.78
Low Tide / height (m)	11:06AM 0.02		11:46PM 0.49	11:54AM -0.00		12:25AM 0.45	12:38PM -0.01		1:02AM 0.39		1:18PM 0.00	1:41AM 0.32		1:58PM 0.05	2:21AM 0.24		2:38PM 0.12	3:03AM 0.16		3:19PM 0.21	3:49AM 0.08

	Thursday 04			Friday 05			Saturday 06			Sunday 07			Monday 08			Tuesday 09			Wednesday 10
Sunrise	6:09	-	-	6:09	-	-	6:09	-	-	6:09	-	-	6:09	-	-	6:09	-	-	6:09	-	-
Sunset	-	6:30	-	-	6:30	-	-	6:29	-	-	6:29	-	-	6:28	-	-	6:27	-	-	6:27	-

Rain (mm)	-	1	11	8	-	4	-	1	1	-	5	1	-	1	6	3	-	3	-	2	3
Temp. °C	28	29	28	29	29	28	29	29	28	29	29	28	29	29	28	29	29	28	29	29	28
Feels °C (?)	30	31	30	31	31	30	33	33	33	33	33	31	32	31	30	31	30	29	30	30	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 The wind is still cross-off at Mangandas (light winds from the E at BUOY-APRP7 4 km from Mangandas). 0.5m 7s swell from the W with a 0.2m 12s groundswell from the NNE. 2 swells combining to make bigger set waves.
57 minutes ago Mangandas

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Actual: 57 min ago

17 km/h

Cross-Off

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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 Mangandas 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 Mangandas Surf forecast

The above surf forecast table for Mangandas provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Mangandas can be found by selecting the local surf guide option on the grey menu. Our Mangandas 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 (Mangandas) 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 Mangandas 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.

Mangandas is 14 km (9 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.