January weather forecastRumoi, Japan
January
Weather in January
January, the same as December, in Rumoi, Japan, is another subzero cold winter month, with an average temperature varying between -6.3°C (20.7°F) and -2.3°C (27.9°F).Temperature
In Rumoi, Japan, January is the month with the lowest recorded average temperatures, measuring a high of -2.3°C (27.9°F) and a low of -6.3°C (20.7°F).Humidity
The average relative humidity in January is 82%.Rainfall
In Rumoi, in January, during 2.3 rainfall days, 45mm (1.77") of precipitation is typically accumulated. Throughout the year, in Rumoi, Japan, there are 138.6 rainfall days, and 792mm (31.18") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Rumoi, in January, during 21.1 snowfall days, 248mm (9.76") of snow is typically accumulated. Throughout the year, there are 84.9 snowfall days, and 1049mm (41.3") of snow is accumulated.Daylight
In January, the average length of the day in Rumoi, Japan, is 9h and 20min.On the first day of the month, sunrise is at 07:07 and sunset at 16:05. On the last day of January, in Rumoi, sunrise is at 06:52 and sunset at 16:40 JST.
Sunshine
January and December, with an average of 1.4h of sunshine, are months with the least sunshine.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Rumoi. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 1 during January translates into the following directions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Rumoi, Japan
- Average high temperature in January: -2.3°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 January: -6.3°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 January
Rumoi, Japan
- Average pressure in January: 1012.6mbar
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 January
Rumoi, Japan
- Average wind speed in January: 19.9km/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 January
Rumoi, Japan
- Average humidity in January: 82%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Rumoi, Japan
- Average rainfall in January: 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 January
Rumoi, Japan
- Average rainfall days in January: 2.3 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 January
Rumoi, Japan
- Average snowfall in January: 248mm
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 January
Rumoi, Japan
- Average snowfall days in January: 21.1 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 January /
Average sunshine in January
Rumoi, Japan
- Average daylight in January: 9h and 18min
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 January: 1h and 24min
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 January
Rumoi, Japan
- Average sunshine days in January: 5.8 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 January
Rumoi, Japan
- Average UV index in January: 1
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 January
Rumoi, Japan
- Average cloud cover in January: 88
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 January
Rumoi, Japan
- Average visibility in January: 8km
The months with the highest visibility are September and October (10km).
The months with the lowest visibility are January, February and December (8km).
