Dadonghai Surf Break

Lat Long: 18.22° N 109.52° E

Dadonghai Surf Forecast and Surf Report

Issued: 7 pm 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Dadonghai sea temperature is
27.8°C
1.5° 

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


Dadonghai surf forecast from 1 Sep 2026:

  • Best quality surf: Wednesday 2 Sep, 2AM (local time) - 2.5ft (0.7m), 8s period, S swell with cross-offshore winds.
  • Most powerful swell: Wednesday 2 Sep, 5PM (local time) - 5ft (1.5m), 6s period, W swell with 144 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 2 Sep, 2AM (local time) - 2.5ft (0.7m), 8s period with S swell.

Best Forecast Surf Conditions for Dadonghai this week:

The surf forecast for Dadonghai over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 02) at 2AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 1.0m and 5s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Dadonghai in the next 16 days are 1.5m 6s and forecast to arrive on Wednesday (Sep 02) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Friday (Sep 04) at 5PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 2nd Sep)2.5ft (0.7m) 8s
Best Surf 2AM (Wed 2nd Sep)2.5ft (0.7m) 8s
Most Powerful 5PM (Wed 2nd Sep)5ft (1.5m) 6s

Table - best surf conditions forecast for Dadonghai over the next 16 days.


Short Range Forecast

Some drizzle, heaviest during Tue night. Warm (max 31°C on Wed afternoon, min 24°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Sat afternoon. Warm (max 30°C on Mon afternoon, min 25°C on Fri night). Wind will be generally light.

Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
S
8
1.2
W
6
1.5
W
6
0.5
S
8
0.4
SSE
8
0.9
W
4
0.5
S
8
0.5
S
8
0.4
SSE
8
0.4
SSE
9
0.4
SSE
8
0.4
SSE
8
0.4
SSE
8
0.4
SSE
8
0.3
SSE
7
0.4
SSE
8
0.4
SSE
8
0.4
SSE
8
0.5
S
8
Wave Graph
Metric surfscale
Energy kJ
69
99
144
33
19
27
31
33
19
25
23
21
24
20
10
22
22
22
33
Wind (km/h)
15
WNW
20
WNW
20
WNW
10
NNW
15
WNW
20
W
5
NNW
15
WNW
15
WNW
5
NNE
5
SW
10
W
10
NNE
5
SSW
10
WSW
5
N
10
WSW
10
W
5
NE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross
off
cross-off
cross-off
off
glassy
cross
cross-off
cross-on
cross-on
glassy
cross
cross
cross-off
High Tide
1:35AM1.21m
2:29PM0.85m
2:07AM1.32m
3:47PM0.68m
2:48AM1.42m
3:42AM1.48m
4:52AM1.52m
6:14AM1.55m
Low Tide
8:29AM0.41m
7:10PM0.61m
9:50AM0.37m
6:53PM0.62m
11:32AM0.32m
1:28PM0.24m
2:55PM0.15m
3:54PM0.09m
rain showers
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
rain showers
rain showers
clear
thunderstorm
thunderstorm
clear
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:26
6:26
6:28
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:55
6:54
6:54
6:53
6:52
6:52
6:51
 mm
1
1
2
1
1
1
Temp °C
25
29
31
27
30
31
27
29
30
27
28
29
27
28
28
27
29
30
27
Feels °C
27
29
32
29
31
32
30
30
32
31
31
32
32
32
31
33
32
32
32
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Dadonghai:

join our community of surf reporters

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 Dadonghai 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 Dadonghai Surf forecast

The above surf forecast table for Dadonghai provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Dadonghai can be found by selecting the local surf guide option on the grey menu. Our Dadonghai 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 (Dadonghai) 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 Dadonghai 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.

Are you planning a holiday in Hainan? If you are looking for accommodation near Dadonghai, camping, hotels and holiday cottages in Hainan, consider staying in Sanya which is 4 km (2 miles) away. Other places in and around Hainan where you can find information about places to rent, and car hire include Bacun which is 63 km (39 miles) away, Li-an, Baoding and Baisha.

Nearest locationNearest