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Riyue Bay (Riyuewan) surfForecast / Hainan / China
48hr Weather and Surf, issued 7 am Wednesday 20 May 2026 CSTForecast update in hr min s Forecast update imminent
Riyue Bay (Riyuewan) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Riyue Bay (Riyuewan) sea temperature is
28.9° C
(Which is normal for this time of year)How big are the waves at Riyue Bay (Riyuewan) today?
The current surf forecast for Riyue Bay (Riyuewan) at 11AM is: 1.3m 6s primary swell from a South direction and 0.7m 9s secondary swell from a East direction (forecast issued at 07:00am May 20). The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 4.5ft (1.3m) | 6s |
| Afternoon (20 May) | 5ft (1.6m) | 7s |
| Evening (20 May) | 4.5ft (1.4m) | 7s |
Table - waves today at Riyue Bay (Riyuewan). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 65mm), heaviest during Thu morning. Warm (max 30°C on Fri morning, min 27°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 6 | S 6 | S 6 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 | S 6 | |
112 | 128 | 141 | 154 | 232 | 181 | 181 | 157 | 157 | 208 | 257 | 388 | 311 | 239 | 198 | 161 | 157 | 157 | 152 | 152 | 154 | 126 | 116 | 92 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | |
High Tide | 11:39AM1.76m | 12:31PM1.69m | 1:25PM1.57m | |||||||||||||||||||||
Low Tide | 8:47PM-0.09m | 9:46PM-0.01m | 10:40PM0.10m | |||||||||||||||||||||
 |  |  | | |  | | | | | | | | | | | | | | |  |  | | | |
 | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | 6:03 |
 | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | 7:07 |
7 | 4 | 6 | 8 | 6 | 1 | 1 | 2 | 5 | 10 | 7 | 6 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | |
Temp °C | 26 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 28 | 27 | 29 | 29 | 29 | 28 | 27 | 27 | 27 | 29 | 30 | 30 | 29 | 28 | 27 | 27 |
29 | 30 | 30 | 32 | 32 | 32 | 32 | 30 | 31 | 30 | 32 | 31 | 32 | 33 | 31 | 31 | 31 | 33 | 33 | 33 | 32 | 33 | 32 | 31 | |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | S 6 | S 7 | S 7 | S 7 | E 9 | E 9 | E 9 | E 9 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | ENE 9 | ENE 9 | S 7 | S 7 | S 7 | S 7 | S 6 | S 6 |
 kJ | 60 | 60 | 141 | 154 | 154 | 181 | 61 | 43 | 43 | 42 | 257 | 276 | 279 | 239 | 198 | 161 | 27 | 26 | 152 | 152 | 154 | 126 | 100 | 76 |
Swell 2 Height (m) Direction Period (s) | — | — | E 9 | E 9 | E 9 | E 9 | — | — | — | — | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | — | — | E 9 | E 9 | E 10 | E 10 | E 10 | E 9 |
| kJ | — | — | 78 | 79 | 61 | 61 | — | — | — | — | 42 | 28 | 28 | 27 | 27 | 27 | — | — | 14 | 14 | 16 | 16 | 16 | 16 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 6 | S 6 | — | — | S 7 | — | S 7 | S 7 | S 7 | S 7 | — | S 7 | S 7 | — | — | — | S 7 | S 7 | — | — | — | — | S 6 | S 6 |
| kJ | 112 | 128 | — | — | 232 | — | 181 | 157 | 157 | 208 | — | 388 | 311 | — | — | — | 157 | 157 | — | — | — | — | 116 | 92 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 347 | 347 | 347 | 1173 | 349 | 37 | 353 | 347 | 347 | 347 | 347 | 1173 | 1183 | 1157 | 347 | 347 | 347 | 347 | 362 | 1173 | 1183 | 1157 | 359 | 347 |
Best forecast wave conditions in Hainan | ||||||||||||||||||||||||
Best forecast wave conditions in China | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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