Dadonghai Surf Break

Dadonghai Surf Forecast and Surf Report

Lat Long: 18.22° N 109.52° E

Issued: 1 pm 22 Jun 2026 (local time)

Forecast update in  hr  min

Today's Dadonghai sea temperature is
30.0° C

Slightly warmer than usual

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


Dadonghai surf forecast from 22 Jun 2026:

  • Best quality surf: Wednesday 24 Jun, 2AM (local time) - 3.5ft (1.1m), 5s period, SSE swell with glassy winds.
  • Most powerful swell: Saturday 27 Jun, 2AM (local time) - 4.5ft (1.4m), 7s period, S swell with 212 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 24 Jun, 2AM (local time) - 3.5ft (1.1m), 5s 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 Wednesday (Jun 24) at 2AM. The primary swell is predicted to be 1.1m and 5s 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 7s and forecast to arrive on Saturday (Jun 27) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Sunday (Jun 28) at 8PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 24th Jun)3.5ft (1.1m) 5s
Best Surf 2AM (Wed 24th Jun)3.5ft (1.1m) 5s
Most Powerful 2AM (Sat 27th Jun)4.5ft (1.4m) 7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 12mm), heaviest on Mon night. Warm (max 33°C on Wed morning, min 28°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Fri night. Warm (max 34°C on Thu afternoon, min 28°C on Thu night). Wind will be generally light.

Mon
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
0
0
1
0
0
1
0
0
1
0
0
0
0
0
0
0
0
1
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)
0.9
S
5
1
S
5
1.2
S
6
0.9
SSE
6
1.1
SSE
5
1.1
SSE
6
1.2
SSE
7
1.1
SSE
7
1.1
SSE
7
1.1
SSE
7
1.2
SSE
7
1.1
S
7
0.9
SSE
7
1.4
S
7
1.1
S
6
0.7
SSE
7
0.9
SSE
8
0.9
S
6
0.7
SSE
6
0.7
SSE
8
0.7
SSE
7
Wave Graph
Metric surfscale
Energy kJ
47
51
91
52
69
95
135
132
111
118
143
113
86
212
94
49
94
58
44
60
51
Wind (km/h)
10
SSW
5
SSE
15
SSW
10
SSE
5
ESE
20
WSW
15
WSW
5
SSE
15
SW
15
WSW
5
SSW
15
SW
15
W
5
SW
15
WSW
20
WSW
5
SW
15
SSW
15
WSW
0
E
10
SSE
Wind State
on
cross-on
cross-on
on
glassy
cross-on
cross
glassy
cross-on
cross
glassy
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross-on
glassy
on
High Tide
4:10PM1.05m
6:15AM1.03m
5:21PM0.84m
6:44AM1.16m
7:10PM0.68m
7:15AM1.27m
7:48AM1.36m
8:23AM1.43m
9:01AM1.49m
9:42AM1.53m
Low Tide
11:14PM0.47m
12:35PM0.70m
11:17PM0.55m
2:35PM0.57m
11:04PM0.61m
3:50PM0.43m
4:40PM0.31m
5:20PM0.22m
5:58PM0.15m
clear
rain showers
thunderstorm
clear
rain showers
clear
clear
rain showers
thunderstorm
clear
rain showers
part cloud
part cloud
rain showers
part cloud
part cloud
rain showers
part cloud
part cloud
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:20
7:20
7:20
7:21
7:21
7:21
7:21
7:21
 mm
3
1
4
3
1
2
6
4
1
1
Temp °C
31
28
32
32
29
33
33
30
33
34
30
32
33
32
32
32
29
31
32
29
31
Feels °C
34
33
35
36
35
35
33
35
36
36
34
34
35
36
35
34
33
34
33
34
34
Swell 1
Height (m)
Direction
Period (s)
0.1
E
9
0.1
E
9
0.1
E
9
0.9
SSE
6
0.1
E
9
1.1
SSE
6
1.2
SSE
7
0.5
E
12
1.1
SSE
7
1.1
SSE
7
0.5
E
12
1.1
S
7
0.9
SSE
7
0.3
ENE
11
1.1
S
6
0.7
SSE
7
0.9
SSE
8
0.9
S
6
0.7
SSE
6
0.7
SSE
8
0.7
SSE
7
Energy kJ
2
2
2
52
2
95
135
72
111
118
73
113
86
22
94
49
94
58
44
60
51
Swell 2
Height (m)
Direction
Period (s)
0.1
E
9
0.1
E
16
0.4
E
14
0.5
E
13
0.3
W
4
0.6
E
12
0.5
E
12
0.3
W
4
0.4
ENE
12
0.4
ENE
11
0.3
ENE
10
0.2
ENE
10
0.1
E
9
0.1
E
9
0.4
SW
5
0.6
WSW
5
0.3
WSW
4
Energy kJ
2
5
65
87
3
102
68
3
45
40
20
9
2
2
6
21
3
Swell 3
Height (m)
Direction
Period (s)
0.1
E
12
0.1
E
9
0.2
E
9
0.3
W
4
0.3
ENE
10
0.1
W
6
0.1
E
8
0.1
E
8
Energy kJ
3
1
6
3
19
1
1
1
Wind waves
Height (m)
Direction
Period (s)
0.9
S
5
1
S
5
1.2
S
6
0.7
SE
6
1.1
SSE
5
0.4
WSW
4
1.1
SSE
7
0.4
WSW
4
1.2
SSE
7
0.5
WSW
4
1.4
S
7
0.4
SW
4
0.4
WSW
4
0.6
WSW
5
0.5
W
5
Energy kJ
47
51
91
32
69
5
132
6
143
9
212
4
6
17
11
Nearest Offshore or Glassy
Rating
(10 max)
2
3
4
4
1
1
4
1
1
1
1
1
1
1
1
2
2
1
1
1
1
Distance (km)
1243
1243
1243
1270
14
665
1270
665
281
286
14
264
276
281
51
1243
87
1665
1259
14
1150
Best forecast wave conditions in Hainan
Rating
(10 max)
1
1
1
2
1
Best forecast wave conditions in China
Rating
(10 max)
1
1
1
1
1
1
1
1
1
2
1
Header Global
Rating
(10 max)
5
6
5
5
5
7
8
8
6
5
5
5
5
5
5
5
5
6
6
6
7
  • 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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