Dadonghai Surf Break

Lat Long: 18.22° N 109.52° E

Dadonghai Surf Forecast and Surf Report

Issued: 7 pm 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Dadonghai sea temperature is
27.7°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 3 Sep 2026:

  • Most powerful swell: Saturday 5 Sep, 2AM (local time) - 1.5ft (0.5m), 8s period, S swell with 35 kJ wave energy.

Best Forecast Surf Conditions for Dadonghai this week:

The most powerful waves expected at Dadonghai in the next 16 days are 0.5m 8s and forecast to arrive on Saturday (Sep 05) at 2AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Thursday (Sep 10) at 8PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Sat 5th Sep)1.5ft (0.5m) 8s

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


Short Range Forecast

Light rain (total 5mm), mostly falling on Sat night. Warm (max 31°C on Fri afternoon, min 25°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Wed afternoon. Warm (max 30°C on Mon afternoon, min 25°C on Sun night). Wind will be generally light.

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
7
0.4
SSE
8
0.4
SSE
8
0.4
SSE
7
0.4
SSE
7
0.4
SSE
6
0.3
S
8
0.4
SSE
7
0.4
SSE
8
Wave Graph
Metric surfscale
Energy kJ
30
33
29
35
34
33
33
31
29
33
24
19
19
17
15
13
10
18
22
Wind (km/h)
5
WNW
15
W
20
W
5
N
5
SW
10
SSW
5
NNE
5
SSW
10
W
5
NW
15
W
10
W
0
NNE
10
SW
5
WSW
5
ENE
5
SE
10
E
10
NE
Wind State
glassy
cross
cross
glassy
cross-on
cross-on
off
on
cross
glassy
cross
cross
glassy
cross-on
cross-on
cross-off
cross-on
cross
cross-off
High Tide
2:48AM1.42m
3:42AM1.48m
4:52AM1.52m
6:14AM1.55m
7:34AM1.58m
8:44AM1.59m
00:04AM0.66m
Low Tide
11:32AM0.32m
1:28PM0.24m
2:55PM0.15m
3:54PM0.09m
4:38PM0.08m
5:13PM0.12m
1:39AM0.65m
clear
clear
clear
clear
clear
rain showers
rain showers
clear
thunderstorm
clear
clear
thunderstorm
clear
clear
thunderstorm
clear
rain showers
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:28
6:28
6:28
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:54
6:53
6:52
6:52
6:51
6:51
6:50
 mm
1
3
1
1
2
1
4
1
Temp °C
27
30
31
27
28
28
27
28
28
27
29
30
27
29
30
28
29
29
27
Feels °C
30
32
32
31
31
30
32
32
31
31
31
32
32
33
33
33
34
34
31
  • 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