May weather forecastRumoi, Japan
May
Weather in May
The last month of the spring, May, is a mild month in Rumoi, Japan, with an average temperature ranging between min 7.5°C (45.5°F) and max 13.3°C (55.9°F).Temperature
A shift in the average high-temperature is noticeable in May, changing from a chilly 6.9°C (44.4°F) in April to a refreshing 13.3°C (55.9°F). During May, Rumoi observes a consistent average nighttime temperature of 7.5°C (45.5°F).Humidity
The average relative humidity in May in Rumoi is 80%.Rainfall
In Rumoi, during May, the rain falls for 13.3 days and regularly aggregates up to 45mm (1.77") of precipitation. Throughout the year, in Rumoi, there are 138.6 rainfall days, and 792mm (31.18") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Rumoi. During 0.4 snowfall days, in May, Rumoi aggregates 2mm (0.08") of snow. Throughout the year, in Rumoi, there are 84.9 snowfall days, and 1049mm (41.3") of snow is accumulated.Daylight
In May, the average length of the day is 14h and 45min.On the first day of May, sunrise is at 04:24 and sunset at 18:36. On the last day of the month, sunrise is at 03:54 and sunset at 19:08 JST.
Sunshine
The months with the most sunshine in Rumoi are May and August, with an average of 8.8h of sunshine.UV index
In May, the average daily maximum UV index in Rumoi is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 4 in May translates into the following instructions:
Undertake precautions - Guarding against sun damage is counselled. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rumoi, Japan
- Average high temperature in May: 13.3°C
The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is January (-2.3°C).
- Average low temperature in May: 7.5°C
The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is February (-6.5°C).
Average pressure in May
Rumoi, Japan
- Average pressure in May: 1010mbar
The month with the highest atmospheric pressure is November (1015.4mbar).
The month with the lowest atmospheric pressure is July (1008.4mbar).
Average wind speed in May
Rumoi, Japan
- Average wind speed in May: 14.1km/h
The windiest month (with the highest average wind speed) is December (22.6km/h).
The calmest month (with the lowest average wind speed) is July (10.3km/h).
Average humidity in May
Rumoi, Japan
- Average humidity in May: 80%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Rumoi, Japan
- Average rainfall in May: 45mm
The wettest month (with the highest rainfall) is August (136mm).
The driest month (with the least rainfall) is February (35mm).
Average rainfall days in May
Rumoi, Japan
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is August (18 days).
The month with the least rainy days is January (2.3 days).
Average snowfall in May
Rumoi, Japan
- Average snowfall in May: 2mm
The month with the highest snowfall is December (260mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Rumoi, Japan
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (21.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rumoi, Japan
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 8h and 48min
The months with the most sunshine are May and August (Average sunshine: 8h and 48min).
The months with the least sunshine are January and December (Average sunshine: 1h and 24min).
Average sunshine days in May
Rumoi, Japan
- Average sunshine days in May: 15.9 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is December (5.1 days).
Average UV index in May
Rumoi, Japan
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Rumoi, Japan
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 88).
The month with the least cloud cover is September (Cloud cover 37).
Average visibility in May
Rumoi, Japan
- Average visibility in May: 9km
The months with the highest visibility are September and October (10km).
The months with the lowest visibility are January, February and December (8km).
