Surf Forecasts:
Riyue Bay (Riyuewan) surf forecast from 26 Aug 2026:
- Best quality surf: Thursday 27 Aug, 5AM (local time) - 4.5ft (1.3m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 8PM (local time) - 3.5ft (1.0m), 16s period, E swell with 513 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 5AM (local time) - 4.5ft (1.3m), 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 Thursday (Aug 27) at 5AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.7m and 14s. 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 1.0m 16s and forecast to arrive on Wednesday (Aug 26) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Wednesday (Aug 26) at 2PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 27th Aug) | 4.5ft (1.3m) 8s |
| Best Surf | 5AM (Thu 27th Aug) | 4.5ft (1.3m) 8s |
| Most Powerful | 8PM (Wed 26th Aug) | 3.5ft (1.0m) 16s |
Table - best surf conditions forecast for Riyue Bay (Riyuewan) over the next 16 days.
The Lowdown
Alright, Rusty here, let's talk about what's on the menu for Riyue Bay (Riyuewan).
First off, we’ve got a little bit of a wait on our hands. There is no real surf to speak of right at the start, so let's call it a quiet few days while we wait for things to line up. The first decent chance to get wet won’t arrive until around Saturday afternoon, August 29th.
The good news is that the water's sitting at 83°, which is about 2° colder than what's typical for this time of year. It's not a huge shock to the system, but you'll notice it's a touch cooler than normal on that first paddle out.
Looking at the whole two-week window, there are only a couple of moments that will get your heart rate up. The standout, the one I’d be circling on the calendar, is Thursday morning, September 3rd. We’re looking at clean conditions, absolutely glassy with zero wind. The swell is a tidy 4ft coming out of the ENE, with a period of 9 seconds. It’s got a moderate combined energy (285), so there’s plenty of push to make it fun. That is your best bet for a genuinely good session.
Another one to keep an eye on, though it’s a bit further out and less certain, is that same afternoon of September 3rd and into Friday morning, September 4th. Still glassy, clean conditions, but the swell drops a little to about 3ft. Still worth a paddle if you can get out of work.
Before that, Saturday afternoon the 29th and Monday afternoon the 31st show some potential with “expect good surf conditions” and clean cross-off winds, but the swell is shorter period and a bit jumbled. They’re options, but not the main event.
As for the rest? A lot of the days are plagued by poor conditions, cross-shore winds, and weak, short-period swell. We get a couple of days with swell over 5ft towards the end of August, but the wind and chop make it messy. It’s not worth your time.
So, bottom line: hold out for that glassy Thursday morning on September 3rd. For the beginners, this is a good spot to learn, and that day will be perfect for it. The rest of the run is pretty average, with a lot of days you’ll want to give a miss. Keep an eye on the charts, though. It might not stay flat for long.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri night. Warm (max 32°C on Wed afternoon, min 27°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 32mm), heaviest during Sat night. Warm (max 31°C on Sat morning, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | ESE 16 | ESE 17 | E 15 | S 8 | SSE 8 | S 8 | S 8 | S 8 | S 9 | S 8 | S 9 | S 9 | S 8 | S 9 | S 8 | WSW 7 | WSW 8 | S 8 | S 8 | NNE 7 | E 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 363 | 499 | 294 | 177 | 212 | 273 | 134 | 190 | 251 | 133 | 269 | 252 | 165 | 220 | 161 | 204 | 353 | 117 | 55 | 46 | 100 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off |
High Tide | 8:18AM1.44m | 9:07AM1.46m | 1:02AM0.77m | 9:52AM1.44m | 00:22AM0.79m | 10:36AM1.39m | 00:19AM0.86m | 11:20AM1.30m | 00:26AM0.96m | 12:08PM1.17m | 00:40AM1.07m | 1:00PM1.02m | 1:00AM1.19m | ||||||||
Low Tide | 5:04PM0.19m | 5:29PM0.20m | 1:48AM0.77m | 5:50PM0.25m | 3:33AM0.72m | 6:08PM0.32m | 4:42AM0.66m | 6:22PM0.41m | 5:46AM0.58m | 6:32PM0.52m | 6:50AM0.51m | 6:36PM0.61m | |||||||||
 | |  | | | | | |  | |  |  | | | | | | | | | | |
 | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | 4 | 9 | — | 4 | 4 | 2 | 4 | 5 | 4 | 5 | 3 |
Temp °C | 31 | 32 | 28 | 31 | 32 | 29 | 31 | 32 | 29 | 31 | 31 | 28 | 30 | 29 | 27 | 27 | 26 | 26 | 26 | 27 | 27 |
Feels °C | 32 | 34 | 31 | 33 | 33 | 34 | 33 | 34 | 34 | 34 | 34 | 34 | 33 | 32 | 31 | 30 | 30 | 31 | 29 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | S 8 | SSE 8 | S 9 | S 8 | SSE 8 | S 8 | S 8 | S 8 | S 9 | S 8 | S 9 | S 9 | S 8 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 |
| kJ | 190 | 183 | 251 | 177 | 212 | 273 | 134 | 190 | 251 | 133 | 269 | 252 | 165 | 220 | 161 | 109 | 111 | 113 | 55 | 46 | 65 |
Swell 2 Height (m) Direction Period (s) | ESE 16 | ESE 17 | E 15 | E 13 | E 12 | E 11 | E 12 | E 14 | E 13 | E 13 | E 13 | WSW 6 | SW 6 | SW 7 | SW 6 | SW 7 | SW 8 | SW 4 | SW 6 | SW 7 | ENE 7 |
| kJ | 363 | 499 | 294 | 85 | 46 | 21 | 3 | 4 | 3 | 13 | 13 | 4 | 33 | 37 | 9 | 42 | 69 | 7 | 8 | 28 | 29 |
Swell 3 Height (m) Direction Period (s) | — | — | WSW 6 | — | — | E 15 | E 15 | E 11 | E 11 | E 9 | — | E 12 | E 12 | E 12 | E 12 | E 13 | E 11 | SW 7 | E 10 | E 12 | E 12 |
| kJ | — | — | 28 | — | — | 4 | 4 | 2 | 2 | 2 | — | 3 | 3 | 3 | 3 | 3 | 2 | 11 | 8 | 43 | 100 |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 5 | WSW 6 | — | SW 5 | WSW 6 | SW 3 | SW 5 | SW 3 | WSW 5 | SW 6 | WSW 6 | WSW 6 | WSW 7 | WSW 6 | WSW 7 | WSW 8 | WSW 6 | — | NNE 7 | — |
| kJ | 36 | 65 | 3 | — | 41 | 3 | 6 | 57 | 4 | 31 | 97 | 35 | 149 | 163 | 85 | 204 | 353 | 117 | — | 41 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 353 | 715 | 347 | 347 | 1183 | 347 | 362 | 624 | 0 | 624 | 0 | 736 | 0 | 0 | 0 | 0 | 0 | 75 | 37 | 37 | 37 |
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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