May weather forecastIshigaki, Japan
May
Weather in May
May ushers in a hot environment in Ishigaki, with temperatures nearing one of the year's highs. There is an extensive amount of rainfall during this month, reaching a notably high 108mm (4.25"). The rise in daylight hours to 13.3 hours makes May among the longest lighting periods of the year. Thus, despite the unusually high rainfall, opportunities remain for visitors to explore the area. The increase in sea temperature to a warm 27°C (80.6°F) from 25°C (77°F) last month is notable for this period, providing optimal conditions for water sports.Temperature
May's average high-temperature in Ishigaki stands at a still moderately hot 26.1°C (79°F), showing little deviation from April's 23.7°C (74.7°F). Ishigaki's average temperature during the nights of May is recorded at a still moderately hot 24.9°C (76.8°F).Humidity
The average relative humidity in May is 83%.Rainfall
In Ishigaki, during May, the rain falls for 18 days and regularly aggregates up to 108mm (4.25") of precipitation. Throughout the year, in Ishigaki, there are 228 rainfall days, and 1184mm (46.61") of precipitation is accumulated.Sea temperature
In Ishigaki, in May, the average water temperature is 27°C (80.6°F).Note: In water temperatures ranging between 25°C (77°F) and 29°C (84.2°F), activities such as swimming and diving become highly pleasurable for long durations.
Daylight
The average length of the day in May in Ishigaki, Japan, is 13h and 19min.On the first day of the month, sunrise is at 06:08 and sunset at 19:12. On the last day of May, in Ishigaki, sunrise is at 05:54 and sunset at 19:27 JST.
Sunshine
In May, the average sunshine in Ishigaki, Japan, is 7.8h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.Note: In May, the maximum UV index of 7 suggests this advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be mindful! Sand and water reflections can up the Sun's UV exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Ishigaki, Japan
- Average high temperature in May: 26.1°C
The warmest months (with the highest average high temperature) are July and August (29.3°C).
The month with the lowest average high temperature is January (20.6°C).
- Average low temperature in May: 24.9°C
The month with the highest average low temperature is July (28.4°C).
The coldest month (with the lowest average low temperature) is January (18.7°C).
Average pressure in May
Ishigaki, Japan
- Average pressure in May: 1010.4mbar
The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is August (1005.6mbar).
Average wind speed in May
Ishigaki, Japan
- Average wind speed in May: 20.4km/h
The windiest month (with the highest average wind speed) is December (32.9km/h).
The calmest month (with the lowest average wind speed) is May (20.4km/h).
Average humidity in May
Ishigaki, Japan
- Average humidity in May: 83%
The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are January and December (76%).
Average rainfall in May
Ishigaki, Japan
- Average rainfall in May: 108mm
The wettest month (with the highest rainfall) is August (217mm).
The driest month (with the least rainfall) is March (50mm).
Average rainfall days in May
Ishigaki, Japan
- Average rainfall days in May: 18 days
The month with the highest number of rainy days is August (22.1 days).
The month with the least rainy days is April (16.7 days).
Average sea temperature in May
Ishigaki, Japan
- Average sea temperature in May: 27°C
The best months for swimming (with the highest average sea temperature) are July, August and September (29°C).
The coldest months (with the lowest average sea temperature) are January and February (23°C).
Average daylight in May /
Average sunshine in May
Ishigaki, Japan
- Average daylight in May: 13h and 18min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 42min).
- Average sunshine in May: 7h and 48min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in May
Ishigaki, Japan
- Average sunshine days in May: 10.3 days
The month with the most sunshine days is June (11.8 days).
The month with the least sunshine days is November (6.2 days).
Average UV index in May
Ishigaki, Japan
- Average UV index in May: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 5).
Average cloud cover in May
Ishigaki, Japan
- Average cloud cover in May: 48
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in May
Ishigaki, Japan
- Average visibility in May: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).





