Riyue Bay (Riyuewan) surfForecast / Hainan / China

information circle48hr Weather and Surf, issued 1 am Monday 18 May 2026 CST
Forecast 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
29.0° 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 7AM is: 1.0m 6s primary swell from a South-southeast direction and 0.7m 8s secondary swell from a East-northeast direction (forecast issued at 01:00am May 18). The wind direction is predicted to be cross-onshore.

Time (CST) & DateWave HeightWave Period
Morning (18 May)3.5ft (1.0m)6s
Afternoon (18 May)3ft (0.9m)9s
Evening (18 May)3ft (0.9m)8s

Table - waves today at Riyue Bay (Riyuewan). (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 49mm), heaviest during Wed afternoon. Warm (max 28°C on Mon morning, min 25°C on Wed afternoon). Wind will be generally light.

Monday
18
Tuesday
19
Wednesday
20
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
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.2
SSE
6
1
SSE
6
1
SSE
6
0.8
ENE
9
0.9
ENE
9
0.9
ENE
9
0.9
ENE
8
0.9
ENE
9
0.9
ENE
9
0.9
E
8
0.9
E
8
1.2
S
7
1.3
S
7
1.2
S
7
1.2
S
7
1.1
S
7
1
S
6
1.3
SSE
6
1.3
SSE
6
1.2
S
6
1.2
S
7
1.2
S
7
1.2
S
7
1.2
S
7
Wave Graph
Metric surfscale
Energy kJ
103
82
82
106
129
123
120
123
123
116
119
144
163
139
131
107
86
134
134
115
134
138
138
138
Wind (km/h)
10
S
5
SSW
10
SSE
15
S
15
S
15
S
10
S
10
S
10
S
15
S
15
S
15
SSW
15
SW
15
S
10
S
5
SSW
10
SSW
15
SSW
20
S
15
S
15
SW
5
SSW
5
SSW
5
SSW
cross-on
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross-on
cross-on
cross
cross
cross-on
cross-on
High Tide
10:07AM1.71m
10:51AM1.76m
11:39AM1.76m
Low Tide
6:48PM-0.11m
7:47PM-0.13m
8:47PM-0.09m
thunderstorm
cloud
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:07
7:07
1
1
1
1
1
2
2
1
2
1
1
2
3
3
4
13
1
Temp °C
26
27
27
28
28
26
26
26
27
27
27
27
27
27
26
26
26
26
27
27
25
26
26
26
30
32
31
31
31
29
30
30
31
31
29
30
30
31
30
30
30
29
30
30
28
31
31
31
Swell 1
Height (m)
Direction
Period (s)
1.2
SSE
6
1
SSE
6
1
SSE
6
0.8
ENE
9
0.9
ENE
9
0.9
ENE
9
0.9
ENE
8
1.1
S
6
1
S
6
0.9
E
8
0.9
E
8
0.9
E
8
1.3
S
7
1.2
S
7
1.2
S
7
1.1
S
7
1
S
6
0.7
E
8
0.6
E
8
1.2
S
6
1.2
S
7
1.2
S
7
1.2
S
7
1.2
S
7
Energy kJ
103
82
82
106
129
123
120
94
78
116
116
113
163
139
131
107
86
60
44
115
134
138
138
138
Swell 2
Height (m)
Direction
Period (s)
0.4
ENE
8
0.6
ENE
8
0.7
ENE
8
0.9
ENE
9
0.9
ENE
9
1
E
8
0.8
E
8
0.8
E
8
0.8
E
8
0.8
E
8
0.7
E
8
0.6
E
9
0.6
E
9
0.6
E
9
0.6
E
9
0.6
E
9
Energy kJ
24
54
72
123
123
144
88
86
84
84
63
56
59
60
61
61
Swell 3
Height (m)
Direction
Period (s)
0.4
E
9
0.4
ESE
5
Energy kJ
26
9
Wind waves
Height (m)
Direction
Period (s)
1.1
S
6
0.9
SSE
6
1
S
6
1.1
S
6
1.1
S
6
1.1
S
6
1.2
S
6
1.2
S
7
1.3
SSE
6
1.3
SSE
6
Energy kJ
92
68
76
92
94
97
119
128
134
134
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
Distance (km)
359
0
362
1249
1249
349
347
362
349
347
347
347
347
1157
347
37
37
347
347
1379
1249
37
37
37
Best forecast wave conditions in Hainan
Rating
(10 max)
1
1
1
1
1
1
Best forecast wave conditions in China
Rating
(10 max)
1
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
6
4
4
5
7
5
4
5
4
4
4
4
4
4
4
4
4
4
4
5
4
4
5
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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