
Surf Forecasts:
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 Type | Time (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 ForecastHeavy 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 SummaryLight 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 | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SSE 7 | SSE 6 | SSE 6 | S 6 | SSE 6 | WSW 6 | SSE 6 | SSE 6 | SSE 7 | WSW 5 | S 7 | S 8 | S 9 | S 9 | S 8 | S 9 | SSE 9 | S 9 | S 9 | SSE 8 | SSE 10 |
Wave Graph | |||||||||||||||||||||
99 | 78 | 123 | 122 | 64 | 97 | 44 | 31 | 36 | 70 | 35 | 33 | 73 | 57 | 52 | 79 | 103 | 169 | 164 | 227 | 341 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | ||||||||||
— | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | |
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) | WSW 7 | W 7 | WSW 6 | WSW 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | E 17 | E 17 | E 16 | E 16 | E 16 | E 15 | SSE 9 | S 9 | S 9 | SSE 8 | WSW 7 |
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) | SSE 7 | SSE 6 | E 9 | E 9 | E 15 | E 15 | WSW 5 | ESE 18 | ESE 18 | E 18 | S 7 | S 8 | S 9 | S 9 | S 8 | S 9 | E 13 | ENE 13 | ENE 12 | E 11 | SSE 10 |
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) | E 9 | E 9 | — | E 16 | E 9 | E 9 | ESE 5 | E 9 | E 9 | E 11 | — | — | — | — | — | — | SE 15 | E 14 | E 11 | — | E 10 |
6 | 6 | — | 5 | 2 | 2 | 2 | 6 | 6 | 9 | — | — | — | — | — | — | 9 | 4 | 2 | — | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | SSE 6 | S 6 | WSW 5 | WSW 6 | — | WSW 6 | WSW 6 | WSW 5 | WSW 6 | WSW 7 | WSW 6 | WSW 7 | WSW 7 | WSW 7 | WSW 8 | WSW 7 | WSW 6 | WSW 7 | — |
— | — | 123 | 122 | 39 | 97 | — | 155 | 170 | 70 | 188 | 198 | 302 | 516 | 384 | 505 | 712 | 353 | 164 | 392 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
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 | |||||||||||||||||||||
Best forecast wave conditions in China | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











