May weather forecastUmi, Japan
May
Weather in May
May, the last month of the spring in Umi, is a moderately hot month, with an average temperature fluctuating between 13.8°C (56.8°F) and 23°C (73.4°F).Temperature
The shift from April to May is marked by an increase in the average high-temperature, moving from a refreshing 17.9°C (64.2°F) to a warm 23°C (73.4°F). May nights in Umi observe an average temperature dip to a mild 13.8°C (56.8°F).Humidity
The average relative humidity in May in Umi is 74%.Rainfall
In Umi, during May, the rain falls for 11.9 days and regularly aggregates up to 88mm (3.46") of precipitation. Throughout the year, there are 183.3 rainfall days, and 1145mm (45.08") of precipitation is accumulated.Snowfall
In Umi, snow does not fall in April through November.Daylight
In Umi, Japan, the average length of the day in May is 13h and 54min.On the first day of the month, sunrise is at 05:29 and sunset at 19:00. On the last day of May, in Umi, sunrise is at 05:08 and sunset at 19:22 JST.
Sunshine
In Umi, the average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May in Umi is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Umi, Japan
- Average high temperature in May: 23°C
The warmest month (with the highest average high temperature) is August (31.1°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in May: 13.8°C
The month with the highest average low temperature is August (23.5°C).
The coldest month (with the lowest average low temperature) is January (2.5°C).
Average pressure in May
Umi, Japan
- Average pressure in May: 1012.1mbar
The month with the highest atmospheric pressure is January (1022mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).
Average wind speed in May
Umi, Japan
- Average wind speed in May: 8.3km/h
The windiest months (with the highest average wind speed) are January and March (10.7km/h).
The calmest month (with the lowest average wind speed) is June (7.6km/h).
Average humidity in May
Umi, Japan
- Average humidity in May: 74%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is March (73%).
Average rainfall in May
Umi, Japan
- Average rainfall in May: 88mm
The wettest month (with the highest rainfall) is July (221mm).
The driest month (with the least rainfall) is January (51mm).
Average rainfall days in May
Umi, Japan
- Average rainfall days in May: 11.9 days
The month with the highest number of rainy days is July (22.5 days).
The month with the least rainy days is October (11.4 days).
Average snowfall in May
Umi, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is January (33mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Umi, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Umi, Japan
- Average daylight in May: 13h and 54min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Umi, Japan
- Average sunshine days in May: 17.7 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (7.1 days).
Average UV index in May
Umi, Japan
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in May
Umi, Japan
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and October (Cloud cover 39).
Average visibility in May
Umi, Japan
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, September, October, November and December (9km).
The months with the lowest visibility are June, July and August (8km).





