Surf Forecasts:
Riyue Bay (Riyuewan) surf forecast from 11 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 11PM (local time) - 3.5ft (1.0m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 2PM (local time) - 5ft (1.6m), 8s period, SSW swell with 314 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 11PM (local time) - 3.5ft (1.0m), 8s period with S swell.
Best Forecast Surf Conditions for Riyue Bay (Riyuewan) this week:
The surf forecast for Riyue Bay (Riyuewan) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 11) at 11PM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.5m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Riyue Bay (Riyuewan) in the next 16 days are 1.6m 8s and forecast to arrive on Friday (Aug 14) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Thursday (Aug 13) at 5PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 11th Aug) | 3.5ft (1.0m) 8s |
| Best Surf | 11PM (Tue 11th Aug) | 3.5ft (1.0m) 8s |
| Most Powerful | 2PM (Fri 14th Aug) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Riyue Bay (Riyuewan) over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s coming.
Honestly, the first couple weeks are a grind. The payoff is at the very end, so don’t give up.
The only break in the mix is Riyue Bay (Riyuewan). It’s a beginner-friendly point that breaks fairly consistently, but from Tuesday August 11th through to around Monday August 24th, it’s slim pickings. Swell is tiny – mostly 2 to 4 ft, out of the south, with a short period of 5 to 9 seconds, meaning weak, gutless energy (combined energy numbers between 64 and 219 – low to moderate). The wind is mostly cross or cross-off, with a few glassy moments on the 18th and 19th, but the wave quality is “poor” or just “very ordinary.” Water temp is 84°, which is about 1° cooler than average – nothing wild.
You’ll get some clean windows on mornings like the 15th, 17th, 18th, and 21st, but the waves are too small and weak to bother. Not worth paddling out.
Then Tuesday August 25th flips the script. Swell jumps to a solid 8 ft from the WSW early, then 7 ft from the SW in the afternoon, period at 8 seconds. The combined energy hits 1185 – that’s strong, serious power. Wind is cross-off and light at 6 mph, keeping it clean. The forecast says “expect very good surf conditions.” This one’s for experienced surfers only – 8 ft is way too much for beginners.
Wednesday August 26th keeps it going with 6 to 7 ft from the south, glassy conditions, and periods stretching to 9–10 seconds, giving the waves more shape and push. Energy stays high (718–853). This is the real deal, the standout of the whole outlook.
For that bigger swell, Riyue Bay’s best direction is from the NE, so the WSW/SW swell will wrap in a bit differently, but with that much juice and clean wind, the point should offer some solid rides. Just know the place can get crowded at times.
So yeah, a long quiet stretch, then a proper little pulse at the end. Long-range stuff is always a bit less certain, but this one looks like a beauty.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Thu afternoon. Warm (max 33°C on Wed afternoon, min 27°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Fri afternoon. Warm (max 33°C on Fri afternoon, min 27°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | S 9 | S 8 | S 9 | S 9 | SSW 5 | S 8 | S 8 | S 8 | S 8 | SSE 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 130 | 113 | 119 | 125 | 125 | 130 | 98 | 93 | 176 | 104 | 181 | 235 | 124 | 217 | 235 | 149 | 146 | 187 | 87 | 79 | 133 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross | cross-off | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross-off | cross-off | cross | cross-off |
High Tide | 8:52AM1.69m | 9:50AM1.67m | 1:41AM0.74m | 10:43AM1.58m | 1:14AM0.79m | 11:34AM1.44m | 1:19AM0.89m | 12:23PM1.26m | 1:33AM1.01m | 1:12PM1.07m | 1:52AM1.12m | ||||||||||
Low Tide | 4:58PM-0.04m | 5:39PM-0.03m | 6:14PM0.04m | 2:40AM0.74m | 6:43PM0.16m | 4:33AM0.70m | 7:04PM0.29m | 5:54AM0.65m | 7:18PM0.43m | 7:09AM0.61m | 7:24PM0.54m | ||||||||||
 |  |  | |  |  | | | | | | | | | | | | |  | | | |
 | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — |
mm | — | 1 | 2 | — | 1 | — | — | 2 | 1 | — | 2 | 2 | — | 1 | 1 | — | 1 | 2 | — | 2 | 2 |
Temp °C | 32 | 32 | 29 | 31 | 33 | 29 | 31 | 33 | 29 | 32 | 33 | 28 | 32 | 33 | 28 | 32 | 33 | 28 | 31 | 32 | 28 |
Feels °C | 36 | 36 | 34 | 34 | 35 | 33 | 33 | 35 | 33 | 34 | 35 | 35 | 35 | 36 | 33 | 35 | 35 | 32 | 34 | 35 | 33 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 8 | S 9 | S 9 | E 13 | S 8 | S 8 | S 8 | E 11 | SSE 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 8 |
| kJ | 130 | 113 | 119 | 125 | 31 | 130 | 98 | 93 | 10 | 104 | 181 | 235 | 124 | 217 | 235 | 149 | 146 | 187 | 87 | 79 | 133 |
Swell 2 Height (m) Direction Period (s) | E 15 | E 15 | E 14 | E 14 | SE 9 | E 13 | E 12 | E 12 | — | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | E 11 | E 10 | — | E 9 | — | E 10 |
| kJ | 5 | 19 | 16 | 32 | 3 | 28 | 11 | 11 | — | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | — | 1 | — | 2 |
Swell 3 Height (m) Direction Period (s) | E 11 | SE 10 | SE 9 | SE 9 | E 10 | E 10 | E 9 | — | — | — | — | — | — | — | — | — | — | — | E 10 | — | — |
| kJ | 2 | 4 | 3 | 3 | 2 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 6 | SW 5 | SW 4 | SSW 5 | WSW 3 | SW 4 | SW 5 | S 8 | SW 4 | SW 5 | — | SW 3 | SW 5 | SW 4 | — | WSW 5 | WSW 4 | SW 5 | SW 5 | WSW 6 |
| kJ | 9 | 46 | 12 | 24 | 125 | 4 | 18 | 62 | 176 | 10 | 47 | — | 2 | 33 | 16 | — | 40 | 13 | 1 | 33 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 576 | 1243 | 0 | 362 | 1183 | 1246 | 362 | 1379 | 75 | 576 | 576 | 0 | 0 | 1402 | 0 | 576 | 1173 | 0 | 0 | 1157 | 0 |
Best forecast wave conditions in Hainan | |||||||||||||||||||||
Best forecast wave conditions in China | |||||||||||||||||||||
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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 16 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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