Dadonghai Surf Break

Dadonghai Surf Forecast and Surf Report

Lat Long: 18.22° N 109.52° E

Issued: 7 pm 06 Jul 2026 (local time)

Forecast update in  hr  min

Today's Dadonghai sea temperature is
29.5° C

Normal for this time of year

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


Dadonghai surf forecast from 6 Jul 2026:

  • Best quality surf: Monday 13 Jul, 8PM (local time) - 4.5ft (1.4m), 9s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Monday 13 Jul, 5PM (local time) - 4.5ft (1.4m), 10s period, SSE swell with 341 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 7 Jul, 5AM (local time) - 3.5ft (1.0m), 7s period with SSE 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 Tuesday (Jul 07) at 5AM. The primary swell is predicted to be 1.0m and 7s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Dadonghai in the next 16 days are 1.4m 10s and forecast to arrive on Monday (Jul 13) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Sunday (Jul 12) at 5AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 7th Jul)3.5ft (1.0m) 7s
Best Surf 8PM (Mon 13th Jul)4.5ft (1.4m) 9s
Most Powerful 5PM (Mon 13th Jul)4.5ft (1.4m) 10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 31mm), heaviest during Tue morning. Warm (max 30°C on Wed afternoon, min 26°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 9mm), mostly falling on Thu night. Warm (max 30°C on Fri morning, min 27°C on Sat night). Winds increasing (light winds from the WNW on Thu night, fresh winds from the W by Sat afternoon).

Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Mon
13
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
1
0
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
Height Map
Wave
Height (m)
Direction
Period (s)
1
SSE
7
1
SSE
6
1.2
SSE
6
1.3
S
6
0.9
SSE
6
1.2
WSW
6
0.7
SSE
6
0.6
SSE
6
0.6
SSE
7
1.2
WSW
5
0.6
S
7
0.5
S
8
0.7
S
9
0.6
S
9
0.6
S
8
0.7
S
9
0.8
SSE
9
1
S
9
1
S
9
1.3
SSE
8
1.4
SSE
10
Wave Graph
Metric surfscale
Energy kJ
99
78
123
122
64
97
44
31
36
70
35
33
73
57
52
79
103
169
164
227
341
Wind (km/h)
0
WSW
15
WSW
20
SW
5
SSW
20
WSW
15
WSW
15
NW
20
W
15
W
20
W
20
W
20
W
20
W
30
W
30
W
25
W
30
WSW
25
W
25
WSW
25
W
15
W
Wind State
glassy
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
4:44AM0.88m
3:03PM1.08m
5:03AM1.01m
4:09PM0.89m
5:31AM1.16m
6:00PM0.71m
6:08AM1.32m
6:54AM1.48m
7:48AM1.63m
8:46AM1.76m
Low Tide
9:55PM0.37m
8:56AM0.75m
10:08PM0.45m
10:53AM0.70m
10:16PM0.54m
12:58PM0.56m
10:12PM0.60m
2:41PM0.37m
3:56PM0.17m
4:57PM0.01m
5:52PM-0.10m
thunderstorm
mod rain
mod rain
rain showers
clear
clear
rain showers
thunderstorm
clear
rain showers
part cloud
part cloud
part cloud
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:11
6:11
6:11
6:11
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:22
7:22
7:22
7:22
7:22
7:21
7:21
7:21
 mm
6
6
7
9
1
2
2
2
2
2
1
1
1
Temp °C
27
27
27
27
29
30
28
30
30
28
30
30
28
29
29
28
28
29
28
29
29
Feels °C
32
30
29
30
30
31
33
32
31
32
32
31
32
29
29
30
28
30
31
30
30
Swell 1
Height (m)
Direction
Period (s)
1.1
WSW
7
1.1
W
7
1.2
WSW
6
0.7
WSW
6
0.9
SSE
6
0.9
SSE
6
0.7
SSE
6
0.6
SSE
6
0.6
SSE
7
0.7
SSE
7
0.8
E
17
1
E
17
1.1
E
16
1.3
E
16
1.3
E
16
1
E
15
0.8
SSE
9
1
S
9
1
S
9
1.3
SSE
8
1.7
WSW
7
Energy kJ
114
110
127
35
64
59
44
31
36
57
386
572
659
897
897
459
103
169
154
227
289
Swell 2
Height (m)
Direction
Period (s)
1
SSE
7
1
SSE
6
0.2
E
9
0.2
E
9
0.1
E
15
0.2
E
15
0.7
WSW
5
0.3
ESE
18
0.4
ESE
18
0.6
E
18
0.6
S
7
0.5
S
8
0.7
S
9
0.6
S
9
0.6
S
8
0.7
S
9
0.5
E
13
0.3
ENE
13
0.2
ENE
12
0.1
E
11
1.4
SSE
10
Energy kJ
99
78
6
6
4
17
30
66
103
225
35
33
73
57
52
79
87
33
13
2
341
Swell 3
Height (m)
Direction
Period (s)
0.2
E
9
0.2
E
9
0.1
E
16
0.1
E
9
0.1
E
9
0.2
ESE
5
0.2
E
9
0.2
E
9
0.2
E
11
0.1
SE
15
0.1
E
14
0.1
E
11
0.1
E
10
Energy kJ
6
6
5
2
2
2
6
6
9
9
4
2
2
Wind waves
Height (m)
Direction
Period (s)
1.2
SSE
6
1.3
S
6
0.9
WSW
5
1.2
WSW
6
1.4
WSW
6
1.5
WSW
6
1.2
WSW
5
1.6
WSW
6
1.5
WSW
7
2
WSW
6
2.2
WSW
7
2
WSW
7
2.3
WSW
7
2.5
WSW
8
1.8
WSW
7
1.5
WSW
6
2
WSW
7
Energy kJ
123
122
39
97
155
170
70
188
198
302
516
384
505
712
353
164
392
Nearest Offshore or Glassy
Rating
(10 max)
1
2
3
4
4
4
1
2
2
1
2
3
3
2
3
3
3
2
1
1
4
Distance (km)
662
1259
1243
1243
1243
1243
14
930
1017
264
706
87
87
264
264
264
264
264
264
662
1243
Best forecast wave conditions in Hainan
Rating
(10 max)
1
3
3
Best forecast wave conditions in China
Rating
(10 max)
1
1
2
1
2
2
4
4
3
3
1
1
Header Global
Rating
(10 max)
8
7
5
5
9
8
9
9
5
6
6
5
8
6
5
5
5
9
9
7
4
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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