Dadonghai Surf Break

Lat Long: 18.22° N 109.52° E

Dadonghai Surf Forecast and Surf Report

Issued: 1 am 15 Jul 2026 (local time)

Forecast update in  hr  min

Today's Dadonghai sea temperature is
28.1° C
1.3° 

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


Dadonghai surf forecast from 15 Jul 2026:

  • Most powerful swell: Wednesday 15 Jul, 11PM (local time) - 4ft (1.2m), 8s period, SSE swell with 151 kJ wave energy.

Best Forecast Surf Conditions for Dadonghai this week:

The most powerful waves expected at Dadonghai in the next 16 days are 1.2m 8s and forecast to arrive on Wednesday (Jul 15) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Monday (Jul 20) at 8AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Wed 15th Jul)4ft (1.2m) 8s

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


Short Range Forecast

Heavy rain (total 26mm), heaviest during Wed morning. Warm (max 30°C on Wed afternoon, min 27°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

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

Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
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
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)
1.1
SSE
7
1.2
SSE
7
1.1
SSE
7
0.9
SSE
7
1
SSE
7
1
SSE
7
1
SSE
6
1
SSE
7
0.9
SSE
7
0.8
SSE
6
1.1
WSW
6
0.9
SSE
7
0.9
SSE
7
0.9
SSE
7
1.3
WSW
5
0.7
SSE
7
0.9
SSE
7
1.3
WSW
6
0.9
WSW
6
0.9
SSE
7
0.9
SSE
7
Wave Graph
Metric surfscale
Energy kJ
121
139
125
64
88
102
75
85
89
56
92
68
62
66
90
52
72
102
55
72
66
Wind (km/h)
20
WSW
20
WSW
5
SW
15
W
15
WSW
5
SW
25
WSW
15
W
20
WSW
25
WSW
20
W
20
W
30
W
25
W
25
W
30
WSW
25
W
20
WSW
30
WSW
25
WSW
20
W
Wind State
cross
cross-on
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
10:43AM1.88m
11:38AM1.83m
12:31PM1.72m
3:05AM0.66m
1:20PM1.54m
3:20AM0.78m
2:07PM1.31m
3:45AM0.92m
2:53PM1.08m
4:15AM1.06m
3:42PM0.85m
4:50AM1.18m
Low Tide
7:28PM-0.11m
8:09PM-0.02m
8:42PM0.10m
5:38AM0.61m
9:08PM0.24m
7:11AM0.64m
9:24PM0.37m
8:46AM0.66m
9:31PM0.48m
10:32AM0.65m
9:28PM0.55m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
part cloud
clear
thunderstorm
part cloud
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:13
6:15
6:15
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:21
7:21
7:21
7:21
7:20
7:20
7:20
 mm
5
1
1
3
2
4
3
7
3
1
2
3
3
1
2
Temp °C
28
30
28
28
29
28
29
29
28
30
30
29
29
29
28
28
28
27
28
29
27
Feels °C
31
32
32
30
31
32
31
30
33
31
30
33
29
28
30
28
28
28
28
29
29
  • 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
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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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