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Surf Forecasts:
Riyue Bay (Riyuewan) surfForecast / Hainan / China
48hr Weather and Surf, issued 7 am Saturday 18 Apr 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
25.8° C
(Which is slightly cooler than normal)How big are the waves at Riyue Bay (Riyuewan) today?
The current surf forecast for Riyue Bay (Riyuewan) at 1PM is: 0.5m 15s primary swell from a East direction and 0.3m 10s secondary swell from a East direction, 0.5m 5s secondary swell from a South direction (forecast issued at 07:00am April 18). The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | 1.5ft (0.5m) | 15s |
| Afternoon (18 Apr) | 1.5ft (0.5m) | 15s |
| Evening (18 Apr) | 2ft (0.6m) | 14s |
Table - waves today at Riyue Bay (Riyuewan). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 15 | 15 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 122 | 118 | 115 | 112 | 157 | 155 | 150 | 150 | 209 | 224 | 236 | 236 | 227 | 209 | 206 | 203 | 203 | 198 | 198 | 195 | 184 | 184 | 189 | 195 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- on | cross- on | cross- on | cross- on | cross | cross- off | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross |
High Tide / height (m) | 10:17AM 1.34 | 12:31AM 0.91 | 10:43AM 1.48 | 2:11AM 0.83 | 11:16AM 1.59 | |||||||||||||||||||
Low Tide / height (m) | 4:01AM 0.71 | 5:43PM 0.18 | 4:03AM 0.79 | 6:40PM 0.07 | 3:40AM 0.82 | 7:40PM 0.01 | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||||||||
| Sunrise | - | 6:20 | - | - | - | - | - | - | - | 6:18 | - | - | - | - | - | - | - | 6:18 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:55 | - | - | - | - | - | - | - | 6:57 | - | - | - | - | - | - | - | 6:57 | - | - | - |
 |  | | | | | | | | | | | | | |  | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 24 | 28 | 29 | 27 | 25 | 24 | 23 | 23 | 25 | 28 | 28 | 27 | 25 | 24 | 23 | 23 | 25 | 27 | 28 | 27 | 25 | 24 | 23 |
| Feels °C (?) | 26 | 27 | 30 | 30 | 28 | 28 | 27 | 26 | 26 | 28 | 29 | 28 | 27 | 28 | 27 | 26 | 26 | 27 | 27 | 28 | 27 | 28 | 27 | 25 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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