Dadonghai Surf Break
Lat Long: 18.22° N 109.52° E

Dadonghai Surf Forecast and Surf Report

Weather Forecast for Dadonghai

Issued: 1 am 06 Jun 2026 (local time)

Forecast update in  hr  min

Today's Dadonghai sea temperature is
30.6° C

1.4°C warmer than 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 5 Jun 2026:

  • Best quality surf: Saturday 6 Jun, 5AM (local time) - 3ft (0.9m), 8s period, SSE swell with glassy winds.
  • Most powerful swell: Tuesday 9 Jun, 8PM (local time) - 4ft (1.2m), 8s period, SSE swell with 181 kJ wave energy.
  • Next surfable swell (1★+): Saturday 6 Jun, 5AM (local time) - 3ft (0.9m), 8s 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 Saturday (Jun 06) at 5AM. The primary swell is predicted to be 0.9m and 8s 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 1.2m 8s and forecast to arrive on Tuesday (Jun 09) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Tuesday (Jun 09) at 8PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 6th Jun)3ft (0.9m) 8s
Best Surf 5AM (Sat 6th Jun)3ft (0.9m) 8s
Most Powerful 8PM (Tue 9th Jun)4ft (1.2m) 8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 4mm), mostly falling on Sun night. Warm (max 33°C on Sat afternoon, min 29°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the WSW by Mon morning).

Days 4-6 Weather Summary

Heavy rain (total 30mm), heaviest during Wed night. Warm (max 32°C on Tue morning, min 25°C on Thu afternoon). Wind will be generally light.

Saturday
6
Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
0
1
0
0
1
0
0
0
0
1
1
1
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)
0.9
SSE
7
0.9
SSE
8
1
SSE
7
1.2
SSE
7
1.2
SSE
7
1.1
SSE
7
1.3
SSE
7
1.2
SSE
8
1.2
SSE
7
1.2
SSE
7
1.2
SSE
8
1
SSE
8
0.9
SSE
7
1.1
SSE
8
0.9
SSE
8
0.9
SSE
7
0.6
SSE
7
0.7
SSE
8
0.6
SSE
7
0.5
S
6
0.6
SSE
8
Wave Graph
Metric surfscale
Energy kJ
68
99
111
128
135
108
158
161
153
132
163
123
68
164
96
70
36
60
37
21
47
Wind (km/h)
10
SW
10
WSW
5
W
20
WSW
10
SSW
5
WSW
30
WSW
10
SW
0
SSW
25
W
20
W
10
SW
15
WNW
10
NW
5
N
5
NW
5
WNW
10
W
5
WSW
5
W
5
WSW
Wind State
cross-on
cross-on
glassy
cross
on
glassy
cross
cross-on
glassy
cross
cross
cross-on
cross-off
cross-off
off
glassy
cross-off
cross
cross
cross
cross-on
High Tide
1:51PM1.42m
2:32PM1.33m
3:21PM1.22m
7:03AM0.86m
4:26PM1.07m
7:00AM0.98m
5:59PM0.91m
7:16AM1.13m
7:58PM0.78m
7:43AM1.31m
10:15PM0.70m
Low Tide
10:40PM0.25m
11:10PM0.30m
11:35PM0.36m
10:11AM0.82m
11:56PM0.45m
12:40PM0.72m
00:12AM0.54m
2:25PM0.53m
00:22AM0.63m
3:41PM0.31m
00:14AM0.69m
part cloud
part cloud
part cloud
part cloud
clear
rain showers
thunderstorm
part cloud
thunderstorm
thunderstorm
part cloud
rain showers
thunderstorm
cloud
rain showers
light rain
mod rain
light rain
thunderstorm
thunderstorm
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:05
6:05
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:15
7:16
7:16
7:16
 mm
1
1
2
1
3
3
9
4
7
3
13
3
9
Temp °C
32
33
30
32
32
30
32
32
30
32
32
30
28
30
28
26
26
26
25
26
26
Feels °C
34
34
35
33
33
35
31
32
35
32
32
34
30
31
32
30
30
30
30
31
31
Swell 1
Height (m)
Direction
Period (s)
0.9
SSE
7
0.9
SSE
8
1
SSE
7
1.2
SSE
7
1.2
SSE
7
1.1
SSE
7
1.3
SSE
7
1.2
SSE
8
0.3
W
5
1.2
SSE
7
1.2
SSE
8
1
SSE
8
0.9
SSE
7
1.1
SSE
8
0.9
SSE
8
0.9
SSE
7
0.6
SSE
7
0.7
SSE
8
0.6
SSE
7
0.5
S
6
0.6
SSE
8
Energy kJ
68
99
111
128
135
108
158
161
4
132
163
123
68
164
96
70
36
60
37
21
47
Swell 2
Height (m)
Direction
Period (s)
0.2
W
4
0.1
E
10
0.2
W
4
0.1
E
10
0.8
W
6
0.4
W
5
0.1
E
10
0.7
W
5
0.1
E
10
0.1
E
10
0.1
E
10
0.5
W
5
0.1
NW
7
0.1
E
10
0.3
WSW
4
0.3
W
5
0.2
W
4
0.2
ENE
9
0.4
ENE
8
0.4
ENE
8
Energy kJ
1
2
1
2
41
8
2
25
2
2
2
12
2
2
4
4
2
8
26
24
Swell 3
Height (m)
Direction
Period (s)
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
8
0.1
E
10
0.1
E
10
0.1
E
10
0.2
WNW
6
0.1
E
10
0.1
E
9
0.1
E
9
Energy kJ
2
2
2
2
1
2
2
2
3
2
2
2
Wind waves
Height (m)
Direction
Period (s)
0.3
W
3
0.4
WSW
3
1.2
SSE
7
0.5
W
3
1.1
W
6
0.3
W
4
0.7
W
4
0.8
E
4
0.2
SSW
4
0.5
WSW
3
0.2
W
3
0.3
WSW
3
Energy kJ
1
3
153
5
74
3
17
23
1
7
1
1
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
1
1
2
1
1
2
1
1
1
2
1
1
1
1
1
1
1
Distance (km)
1335
1270
14
1270
1259
14
1259
1159
1159
710
661
87
14
14
14
14
14
14
1161
1270
87
Best forecast wave conditions in Hainan
Rating
(10 max)
1
1
1
1
2
1
1
1
1
1
Best forecast wave conditions in China
Rating
(10 max)
2
1
1
2
2
1
1
2
1
1
1
1
1
Header Global
Rating
(10 max)
9
8
9
6
8
7
8
7
6
9
5
7
6
5
9
9
9
7
6
7
8
  • 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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