Dadonghai Surf Forecast

/ Hainan (4 surf breaks) /

China (24 surf breaks)

Surf Forecasts:

Dadonghai surfForecast / Hainan / China

48hr Weather and Surf, issued 1 pm Sunday 14 Sep 2025 CST

Forecast update in hr min s Forecast update imminent

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

Today's Dadonghai sea temperature is 29.3° C
(Which is slightly warmer than usual)

How big are the waves at Dadonghai today?

The current surf forecast for Dadonghai at 5PM is: 0.4m 6s primary swell from a East-southeast direction (forecast issued at 01:00pm September 14). An open ocean swell of 0.1m 10s is not directed at the surf break, a second open ocean swell of 0.1m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (CST) & Date	Wave Height	Wave Period
Morning (14 Sep)	2ft (0.6m)	5s
Afternoon (14 Sep)	-	-
Evening (14 Sep)	1.5ft (0.4m)	6s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Sunday 14					Monday 15								Tuesday 16								Wednesday 17
	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 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 (?)	E	E	ESE	ESE	ESE	ESE	ESE	SE	SE	SE	SE	E	E	E	E	E	S	S	S	S	S	S	S	S
Period(s) (?)	5	12	6	6	6	5	4	4	4	4	4	3	3	3	4	4	8	7	7	7	7	6	6	6
Wave Graph (?)
kJ (?)	0	0	12	12	12	11	5	5	3	5	6	5	3	5	4	4	5	4	4	4	4	3	3	3
Wind (km/h)	SE	SSE	SE	E	ENE	ENE	E	ENE	ESE	ESE	E	ENE	ENE	NE	NNE	NE	ESE	SE	ESE	ENE	ENE	NE	NNE	NNE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- on	cross	cross- off	cross- off	cross	cross- off	cross- on	cross- on	cross	cross- off	cross- off	cross- off	cross- off	cross- off	cross	cross- on	cross	cross- off	cross- off	cross- off	cross- off	glass
High Tide / height (m)							3:31AM 1.54								4:41AM 1.52									6:05AM 1.50
Low Tide / height (m)		11:32AM 0.23								1:22PM 0.19									2:47PM 0.15

	Sunday 14					Monday 15								Tuesday 16								Wednesday 17
Sunrise	-	-	-	-	-	-	-	6:28	-	-	-	-	-	-	-	6:28	-	-	-	-	-	-	-	6:28
Sunset	-	-	6:45	-	-	-	-	-	-	-	6:45	-	-	-	-	-	-	-	6:44	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	1	-	-	2	-	-	-	-	-	-	-	-	1	1	-	-	-	-
Temp. °C	29	30	29	27	27	26	26	27	29	29	29	27	26	26	25	26	29	30	29	27	26	26	25	26
Feels °C (?)	32	33	32	31	31	30	30	31	32	32	32	30	30	30	28	30	32	33	33	31	30	30	29	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 Hainan

Wind Update The wind is still cross-on at Dadonghai (light winds from the SSE at Sanya 7 km from Dadonghai). 0.3m 3s local chop from the SSE to make surfable waves.
2 hours 32 minutes ago Dadonghai

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2 h 32 min ago

14 km/h

SSE

Cross-On

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