
Surf Forecasts:
Riyue Bay (Riyuewan) surf forecast from 16 Sep 2026:
- Best quality surf: Thursday 17 Sep, 8PM (local time) - 4.5ft (1.4m), 8s period, ENE swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 8PM (local time) - 5.5ft (1.7m), 8s period, ENE swell with 344 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 2AM (local time) - 3ft (0.9m), 8s period with ENE 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 (Sep 17) at 2AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.2m and 13s. 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 1.7m 8s and forecast to arrive on Friday (Sep 18) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 17th Sep) | 3ft (0.9m) 8s |
| Best Surf | 8PM (Thu 17th Sep) | 4.5ft (1.4m) 8s |
| Most Powerful | 8PM (Fri 18th Sep) | 5.5ft (1.7m) 8s |
Table - best surf conditions forecast for Riyue Bay (Riyuewan) over the next 16 days.
The Lowdown
Right now, the ocean’s just not playing ball. We’ve got a full 16-day window ahead, but honestly, it’s a flat, frustrated stretch for Riyue Bay (Riyuewan). There’s nothing remotely rideable until the very end, and even then, it’s mush. The first couple of weeks are all small, short-period windslop from the east-northeast, never breaking that 5 ft mark, and it’s mostly cross or cross-onshore. The combined energy is weak to moderate – we’re looking at readings like 92 and 312 early on, but then it just dies. By the 22nd, the swell’s down to 1 ft to 2 ft with a long 12-second period, but there’s no push behind it, and the energy numbers crash to the 80s and 100s. After that, it’s just dribble – 1 ft to 2 ft, short-period stuff, with combined energy in the single digits to low 40s. The morning of the 26th is a joke – 1 ft at 6 seconds, energy of 8. If you’re not laughing, you’re crying.
There’s a bit of a pulse trying to show up around the 27th and 28th – a longer-period easterly groundswell (14 to 17 seconds) pushing 3 ft, and the energy jumps to 397 on the 28th morning. But the wind is squarely onshore, and it’s thunderstorm weather. That combo means chop, bump, and generally poor conditions. It’s not worth paddling out for that mess, especially at a fairly exposed point where the cross and onshore winds will just rip it apart. The 29th drops back down, and the 30th and 1st of October are tiny – 2 ft to 2 ft, with the odd glassy window but no real swell.
Water temp is 82°, which is about 1° warmer than normal for this time of year – nothing crazy, just a touch balmy.
Now, the one tiny glimmer – if you’re desperate and a masochist, the morning of the 1st of October has a glassy 2 ft southerly slop, but the period is a short 6 seconds and energy is a pathetic 38. That’s not surfing; that’s floating. The whole window is a write-off, honestly. There are no good surf options in the 16-day run. But look, this stretch of coast tends not to stay this quiet for long – forecasts change, and a bit of luck could turn it around. Right now, though, save the wax, work on your pop-up in the living room, or just have a cold one and watch the horizon.
Signing off.
Rusty
Short Range ForecastHeavy rain (total 20mm), heaviest during Fri night. Warm (max 29°C on Wed afternoon, min 25°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Sat morning. Warm (max 29°C on Sun afternoon, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 7 | E 7 | ENE 7 | E 7 | E 7 | ENE 7 | E 7 | E 13 | E 12 | E 12 | E 11 |
Wave Graph | |||||||||||||||||||||
79 | 183 | 109 | 104 | 165 | 273 | 223 | 257 | 196 | 138 | 134 | 124 | 149 | 100 | 81 | 84 | 44 | 55 | 46 | 69 | 119 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-on | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross-on | cross-off | cross | cross-on | cross-off |
High Tide | 2:42PM0.77m | 00:59AM1.34m | 1:29AM1.35m | 2:08AM1.34m | 2:59AM1.31m | 4:11AM1.29m | 5:36AM1.29m | ||||||||||||||
Low Tide | 8:13AM0.37m | 5:28PM0.73m | 9:18AM0.37m | 10:36AM0.37m | 12:11PM0.37m | 1:35PM0.34m | 2:31PM0.31m | 3:11PM0.28m | |||||||||||||
6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | |
— | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | |
mm | 1 | — | — | — | — | 2 | 1 | 4 | 12 | 4 | 5 | 3 | — | 1 | — | — | — | — | — | — | — |
Temp °C | 28 | 29 | 26 | 29 | 29 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 28 | 29 | 26 | 28 | 29 | 26 |
Feels °C | 32 | 31 | 30 | 32 | 32 | 30 | 31 | 30 | 29 | 32 | 31 | 30 | 31 | 31 | 29 | 30 | 30 | 30 | 32 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | — | E 14 | E 8 | E 8 | E 13 | E 7 | E 7 | S 6 | E 7 | E 7 | E 15 | E 6 | E 6 | E 12 | E 11 |
79 | 116 | 109 | 104 | 127 | 161 | — | 15 | 196 | 138 | 13 | 124 | 97 | 1 | 81 | 61 | 38 | 21 | 19 | 69 | 119 | |
Swell 2 Height (m) Direction Period (s) | E 13 | E 13 | E 13 | E 12 | ENE 12 | E 15 | — | — | E 14 | ENE 13 | ENE 13 | E 13 | S 6 | S 6 | E 17 | E 15 | S 6 | E 13 | E 12 | E 6 | E 11 |
13 | 13 | 13 | 12 | 27 | 4 | — | — | 16 | 32 | 16 | 13 | 1 | 1 | 6 | 19 | 1 | 55 | 46 | 18 | 61 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | S 7 | S 7 | S 6 | — | E 17 | — | S 6 | E 10 | E 9 | — | — |
— | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | 22 | — | 1 | 16 | 14 | — | — | |
Wind waves Height (m) Direction Period (s) | — | ENE 8 | — | — | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | E 7 | — | ENE 7 | E 7 | — | ENE 7 | E 7 | — | — | E 6 | ENE 6 |
— | 183 | — | — | 165 | 273 | 223 | 257 | — | — | 134 | — | 149 | 100 | — | 84 | 44 | — | — | 22 | 39 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 347 | 1075 | 0 | 347 | 1075 | 0 | 1249 | 1243 | 0 | 353 | 1243 | 0 | 1157 | 1243 | 0 | 1249 | 1243 | 0 | 1249 | 1082 | 0 |
Best forecast wave conditions in Hainan | |||||||||||||||||||||
Best forecast wave conditions in China | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










