Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
The coldest time of the year is January, with temperatures averaging a high of 18.9°C (66°F) and a low of 17°C (62.6°F).Humidity
January is the least humid month, with an average relative humidity of 72%.Rainfall
In Onaga, during January, the rain falls for 21.2 days and regularly aggregates up to 62mm (2.44") of precipitation. Throughout the year, there are 227.4 rainfall days, and 1405mm (55.31") of precipitation is accumulated.Daylight
In January, the average length of the day is 10h and 43min.On the first day of January, sunrise is at 07:16 and sunset at 17:47. On the last day of the month, sunrise is at 07:14 and sunset at 18:10 JST.
Sunshine
January has the least sunshine of the year, with an average of 4.3h of sunshine.UV index
The average daily maximum UV index in January is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 5 in January translates into the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What is the average January temperature?
What is the least humid month?
What is the average humidity in January?
How much does it rain in January?
How many hours of daylight does Onaga have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Onaga have in January?
What is the UV index reading in January?
Average temperature in January
Onaga, Japan
- Average high temperature in January: 18.9°C
The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (18.9°C).
- Average low temperature in January: 17°C
The month with the highest average low temperature is August (28.3°C).
The coldest month (with the lowest average low temperature) is January (17°C).
Average pressure in January
Onaga, Japan
- Average pressure in January: 1020.8mbar
The month with the highest atmospheric pressure is January (1020.8mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).
Average wind speed in January
Onaga, Japan
- Average wind speed in January: 27.3km/h
The windiest month (with the highest average wind speed) is December (28.4km/h).
The calmest month (with the lowest average wind speed) is May (20.1km/h).
Average humidity in January
Onaga, Japan
- Average humidity in January: 72%
The month with the highest relative humidity is June (86%).
The month with the lowest relative humidity is January (72%).
Average rainfall in January
Onaga, Japan
- Average rainfall in January: 62mm
The wettest month (with the highest rainfall) is June (201mm).
The driest month (with the least rainfall) is February (59mm).
Average rainfall days in January
Onaga, Japan
- Average rainfall days in January: 21.2 days
The month with the highest number of rainy days is June (21.5 days).
The month with the least rainy days is July (16.4 days).
Average daylight in January /
Average sunshine in January
Onaga, Japan
- Average daylight in January: 10h and 4min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in January
Onaga, Japan
- Average sunshine days in January: 6 days
The month with the most sunshine days is July (11.9 days).
The month with the least sunshine days is December (5.7 days).
Average UV index in January
Onaga, Japan
- Average UV index in January: 5
The months with the highest UV index are June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in January
Onaga, Japan
- Average cloud cover in January: 63
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in January
Onaga, Japan
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
