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 snowfall in January
- Average snowfall days in January
- Average sea temperature 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
January, with its high-temperature average of 8.4°C (47.1°F) and a low-temperature average of 3.5°C (38.3°F), is the coldest month.Humidity
January and February, with an average relative humidity of 67%, are the least humid months.Rainfall
The month with the least rainfall is January, when the rain falls for 7.5 days and typically collects 27mm (1.06") of precipitation.Snowfall
January, February and December are months with snowfall. In January, it is snowing for 0.8 days. Throughout January, 1mm (0.04") of snow is accumulated. Throughout the year, there are 2.5 snowfall days, and 4mm (0.16") of snow is accumulated.Sea temperature
In January, the average sea temperature in Kosai is 15.9°C (60.6°F).Note: A surface water temperature of 15.9°C (60.6°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
The average length of the day in January is 10h and 8min.On the first day of January, sunrise is at 06:56 and sunset at 16:49. On the last day of the month, sunrise is at 06:49 and sunset at 17:16 JST.
Sunshine
The average sunshine in January is 6.3h.UV index
January is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 2 during January morphs into the following directions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
What is the usual temperature for Kosai in January?
What is the least humid month?
What is the average humidity in January?
What is the driest month in Kosai?
How many days does it rain in January in Kosai?
How many days does it snow in January?
What is the sea temperature in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Kosai, Japan
- Average high temperature in January: 8.4°C
The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (8.4°C).
- Average low temperature in January: 3.5°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (3.5°C).
Average pressure in January
Kosai, Japan
- Average pressure in January: 1017.9mbar
The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in January
Kosai, Japan
- Average wind speed in January: 24.2km/h
The windiest month (with the highest average wind speed) is January (24.2km/h).
The calmest months (with the lowest average wind speed) are July and August (12.8km/h).
Average humidity in January
Kosai, Japan
- Average humidity in January: 67%
The month with the highest relative humidity is July (83%).
The months with the lowest relative humidity are January and February (67%).
Average rainfall in January
Kosai, Japan
- Average rainfall in January: 27mm
The wettest month (with the highest rainfall) is July (190mm).
The driest month (with the least rainfall) is January (27mm).
Average rainfall days in January
Kosai, Japan
- Average rainfall days in January: 7.5 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in January
Kosai, Japan
- Average snowfall in January: 1mm
The month with the highest snowfall is February (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Kosai, Japan
- Average snowfall days in January: 0.8 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in January
Kosai, Japan
- Average sea temperature in January: 15.9°C
The best month for swimming (with the highest average sea temperature) is August (26.8°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).
Average daylight in January /
Average sunshine in January
Kosai, Japan
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January: 6h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in January
Kosai, Japan
- Average sunshine days in January: 19.9 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (8.7 days).
Average UV index in January
Kosai, Japan
- Average UV index in January: 2
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in January
Kosai, Japan
- Average cloud cover in January: 28
The month with the most cloud cover is June (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 28).
Average visibility in January
Kosai, Japan
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
