Hainan, Riyue Bay in May
Sea, with a tide. What an average May looks like here, from five years of weather history.
- Model: weather history 2021 to 2025
- Model mean, kn
- 6.9
- Model gust, kn
- 17.8
- Direction
- SSW
- Waves, m
- 0.4
- Surf days
- 14
- Water °C
- 28
- Air °C
- 28
- Sunny days
- 2
- Rain days
- 22
- Wetsuit
- no wetsuit
May is one of the flattest months here: 14 surf days against 19 in an average month. Best for waves: Nov to Jan.
Plan your seshThe planner scores the real forecast for your weight, your gear and your wind.
Season
Best for waves: Nov to Jan
JanFebMarAprMayJunJulAugSepOctNovDec
Surf days
Model: weather history 2021 to 2025
Model mean, kn
8.8
8.2
7.6
8.0
6.9
8.0
6.8
7.2
5.6
8.8
9.1
10.1
Model gust, kn
21.1
19.8
18.7
19.6
17.8
20.2
17.9
18.7
15.6
21.6
21.8
23.8
Direction
N
NE
SSW
SSW
SSW
SSW
SW
SW
NNE
NNE
NNE
N
Waves, m
0.7
0.6
0.5
0.5
0.4
0.5
0.5
0.4
0.4
0.7
0.7
0.8
Surf days
27
22
17
18
14
18
17
15
11
23
25
29
Water °C
22
23
24
26
28
29
28
27
29
29
26
24
Air °C
21
22
25
27
28
30
30
30
29
27
25
22
Sunny days
5
3
4
3
2
1
6
3
4
2
3
3
Rain days
10
12
12
17
22
23
23
23
25
24
14
8
Model rows: daytime (09:00 to 18:00) means; a windy day has 2 hours or more at the sport's minimum; a surf day 2 daylight hours of waves of 0.5 m or more; sunny: daytime cloud 30 % or less; rain: 1 mm or more.
From weather models 2021 to 2025. At spots with thermal wind or sea breeze the model reads several knots low; the bars show the shape of the year, riders know the numbers.
Source: Open-Meteo historical weather and marine archive (CC BY 4.0), weather 2021 to 2025, waves and water 2021 to 2025.