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Riyue Bay (Riyuewan) surfForecast / Hainan / China
12 Day Weather and Surf, issued 7 am Thursday 18 Sep 2025 CST
Best Forecast Surf Conditions for Riyue Bay (Riyuewan) this week:
The surf forecast for Riyue Bay (Riyuewan) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 11AM. The primary swell is predicted to be 1.4m and 7s period with a secondary swell of 1.2m and 7s. Another secondary swell of 0.1m and 14s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Riyue Bay (Riyuewan) in the next 12 days are 5.5m 9s and forecast to arrive on Thursday (Sep 25) at 2PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Thursday (Sep 25) at 5AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Thu 18th Sep) | 4.5ft (1.4m) 7s |
| Best Surf | 2PM (Thu 25th Sep) | 18ft (5.5m) 9s |
| Most Powerful | 2PM (Thu 25th Sep) | 18ft (5.5m) 9s |
Table - best surf conditions forecast for Riyue Bay (Riyuewan) over the next 12 days.
Short Range Forecast Moderate rain (total 12mm), heaviest on Thu morning. Warm (max 30°C on Fri morning, min 26°C on Thu morning). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Mon afternoon. Warm (max 30°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 8 | 7 | 8 | 8 | 7 | 8 | 8 | 8 | 7 | 6 | 10 | 9 | 14 | 13 | 15 | 16 | 15 | 15 | 14 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 214 | 127 | 135 | 89 | 115 | 90 | 40 | 44 | 90 | 57 | 27 | 13 | 8 | 26 | 64 | 212 | 1037 | 2450 | 2925 | 2908 | 1868 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross | cross- on | glass | glass | glass | glass | glass | cross | cross- off | cross | cross | cross- off | glass | cross | off | cross- off | cross- off | cross- off |
High Tide / height (m) | 7:38AM 1.40 | 8:41AM 1.36 | 11:15PM 0.84 | 9:35AM 1.31 | 11:08PM 0.90 | 10:26AM 1.23 | 11:12PM 0.99 | 11:14AM 1.13 | 11:21PM 1.09 | 12:04PM 1.03 | 11:35PM 1.18 | ||||||||||
Low Tide / height (m) | 3:37PM 0.16 | 4:12PM 0.21 | 4:39PM 0.28 | 2:53AM 0.74 | 4:59PM 0.37 | 4:00AM 0.65 | 5:14PM 0.47 | 4:55AM 0.55 | 5:24PM 0.57 | 5:45AM 0.46 | 5:28PM 0.66 | ||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| Sunrise | 6:26 | - | - | 6:26 | - | - | 6:26 | - | - | 6:26 | - | - | 6:26 | - | - | 6:26 | - | - | 6:28 | - | - |
| Sunset | - | 6:38 | - | - | 6:37 | - | - | 6:37 | - | - | 6:37 | - | - | 6:36 | - | - | 6:35 | - | - | 6:34 | - |
 |  |  |  | |  | | | | | |  |  | | | | | | | |  | |
Rain (mm) | 7 | 2 | 1 | - | - | - | - | 2 | - | - | 2 | 1 | - | 2 | 3 | - | 1 | 1 | - | - | - |
| Temp. °C | 27 | 28 | 26 | 30 | 30 | 27 | 30 | 30 | 28 | 29 | 28 | 27 | 30 | 30 | 26 | 30 | 30 | 27 | 29 | 30 | 27 |
| Feels °C (?) | 32 | 32 | 30 | 33 | 32 | 31 | 35 | 34 | 34 | 34 | 32 | 31 | 33 | 32 | 29 | 34 | 34 | 32 | 31 | 34 | 29 |
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Recent Eyeball Surf Reports for Hainan
Continuing clean conditions at Riyue Bay (Riyuewan) (light winds from the ESE at Danxian 119 km from Riyue Bay (Riyuewan)). 1.1m 7s swell from the E to make surfable waves.
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Riyue Bay (Riyuewan) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Riyue Bay (Riyuewan) Surf forecast
The above surf forecast table for Riyue Bay (Riyuewan) provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Riyue Bay (Riyuewan) can be found by selecting the local surf guide option on the grey menu. Our Riyue Bay (Riyuewan) 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 (Riyue Bay (Riyuewan)) 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 Riyue Bay (Riyuewan) 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 Riyue Bay (Riyuewan), camping, hotels and holiday cottages in Hainan, consider staying in Wanning which is 26 km (16 miles) away. Other places in and around Hainan where you can find information about places to rent, and car hire include Li-an which is 27 km (17 miles) away, Baoding, Bacun and Baimalingcaifachang.
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