May weather forecastTomakomai, Japan
May
Weather in May
The last month of the spring, May, is a moderate month in Tomakomai, Japan, with an average temperature ranging between min 7.9°C (46.2°F) and max 14.2°C (57.6°F).Temperature
The onset of May marks an increase in the average high-temperature, moving from a chilly 8.5°C (47.3°F) in April to a moderate 14.2°C (57.6°F). During May nights, Tomakomai records an average temperature of 7.9°C (46.2°F).Humidity
The average relative humidity in May is 79%.Rainfall
In Tomakomai, in May, it is raining for 11.5 days, with typically 29mm (1.14") of accumulated precipitation. In Tomakomai, Japan, during the entire year, the rain falls for 119.1 days and collects up to 428mm (16.85") of precipitation.Snowfall
May through October are months without snowfall in Tomakomai.Sea temperature
In May, the average sea temperature is 8°C (46.4°F).Note: Dipping in 8°C (46.4°F) at temperatures less than 10°C (50°F) without proper gear can lead to pronounced cold shock and breathing difficulties.
Daylight
In Tomakomai, Japan, the average length of the day in May is 14h and 37min.On the first day of the month, sunrise is at 04:27 and sunset at 18:33. On the last day of May, in Tomakomai, sunrise is at 03:58 and sunset at 19:03 JST.
Sunshine
With an average of 9.3h of sunshine, May has the most sunshine of the year.UV index
In Tomakomai, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 4 during May morphs into the following directions:
Undertake protective steps - Preventing sun damage is advised. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Tomakomai, Japan
- Average high temperature in May: 14.2°C
The warmest month (with the highest average high temperature) is August (23.7°C).
The month with the lowest average high temperature is January (-1.4°C).
- Average low temperature in May: 7.9°C
The month with the highest average low temperature is August (18.3°C).
The coldest month (with the lowest average low temperature) is February (-7.2°C).
Average pressure in May
Tomakomai, Japan
- Average pressure in May: 1010.5mbar
The month with the highest atmospheric pressure is November (1016.3mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in May
Tomakomai, Japan
- Average wind speed in May: 12.8km/h
The windiest month (with the highest average wind speed) is December (15.9km/h).
The calmest month (with the lowest average wind speed) is July (10.5km/h).
Average humidity in May
Tomakomai, Japan
- Average humidity in May: 79%
The month with the highest relative humidity is July (87%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in May
Tomakomai, Japan
- Average rainfall in May: 29mm
The wettest month (with the highest rainfall) is August (65mm).
The driest month (with the least rainfall) is January (17mm).
Average rainfall days in May
Tomakomai, Japan
- Average rainfall days in May: 11.5 days
The month with the highest number of rainy days is July (14.8 days).
The months with the least rainy days are January and February (3.9 days).
Average snowfall in May
Tomakomai, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is February (119mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Tomakomai, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Tomakomai, Japan
- Average sea temperature in May: 8°C
The best month for swimming (with the highest average sea temperature) is August (20.8°C).
The coldest month (with the lowest average sea temperature) is March (2.8°C).
Average daylight in May /
Average sunshine in May
Tomakomai, Japan
- Average daylight in May: 14h and 36min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 9h and 18min
The month with the most sunshine is May (Average sunshine: 9h and 18min).
The months with the least sunshine are January and February (Average sunshine: 4h and 0min).
Average sunshine days in May
Tomakomai, Japan
- Average sunshine days in May: 17.2 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in May
Tomakomai, Japan
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Tomakomai, Japan
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is October (Cloud cover 33).
Average visibility in May
Tomakomai, Japan
- Average visibility in May: 9km
The months with the highest visibility are January, April, September, October, November and December (10km).
The month with the lowest visibility is July (8km).





