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
Weather in January
Temperature
Yanai's January weather, with an average high temperature of 8.7°C (47.7°F) and an average low temperature of 4.3°C (39.7°F), tends to be the coldest of the year.Humidity
The months with the lowest humidity in Yanai are January through March, with an average relative humidity of 71%.Rainfall
January is the month with the least rainfall. Rain falls for 13 days and accumulates 39mm (1.54") of precipitation.Snowfall
Months with snowfall in Yanai are January, February and December. In Yanai, during January, snow falls for 3.3 days and regularly aggregates up to 7mm (0.28") of snow. In Yanai, during the entire year, snow falls for 7.6 days and aggregates up to 19mm (0.75") of snow.Sea temperature
In Yanai, the average seawater temperature in January is 14.8°C (58.6°F).Note: You can swim in 14.8°C (58.6°F) below 10°C (50°F) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 13°C (55.4°F) without it is tough.
Daylight
In January, the average length of the day is 10h and 11min.On the first day of January, sunrise is at 07:16 and sunset at 17:12. On the last day of the month, sunrise is at 07:09 and sunset at 17:40 JST.
Sunshine
January has the least sunshine of the year in Yanai, with an average of 5h of sunshine.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Yanai. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 during January leads to these advisories:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What is the coldest month in Yanai?
What is the average January temperature in Yanai?
What are the least humid months in Yanai?
What is the average humidity in January in Yanai?
What is the driest month in Yanai?
How much does it rain in Yanai in January?
How many days does it snow in January in Yanai?
What is the sea water temperature in January in Yanai?
What is the average length of the day in January in Yanai?
When are sunrise and sunset in January in Yanai?
What is the month with the least sunshine in Yanai?
How long on average sun shines in January in Yanai?
What is the month with the lowest UV index in Yanai?
How high is the UV index in January in Yanai?
Average temperature in January
Yanai, Japan
- Average high temperature in January: 8.7°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 (8.7°C).
- Average low temperature in January: 4.3°C
The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (4.3°C).
Average pressure in January
Yanai, Japan
- Average pressure in January: 1021.3mbar
The month with the highest atmospheric pressure is January (1021.3mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).
Average wind speed in January
Yanai, Japan
- Average wind speed in January: 14.5km/h
The windiest month (with the highest average wind speed) is January (14.5km/h).
The calmest month (with the lowest average wind speed) is June (8km/h).
Average humidity in January
Yanai, Japan
- Average humidity in January: 71%
The month with the highest relative humidity is July (85%).
The months with the lowest relative humidity are January, February and March (71%).
Average rainfall in January
Yanai, Japan
- Average rainfall in January: 39mm
The wettest month (with the highest rainfall) is July (213mm).
The driest month (with the least rainfall) is January (39mm).
Average rainfall days in January
Yanai, Japan
- Average rainfall days in January: 13 days
The month with the highest number of rainy days is July (20.5 days).
The month with the least rainy days is October (10.5 days).
Average snowfall in January
Yanai, Japan
- Average snowfall in January: 7mm
The month with the highest snowfall is December (8mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Yanai, Japan
- Average snowfall days in January: 3.3 days
The month with the highest number of snowfall days is January (3.3 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
Yanai, Japan
- Average sea temperature in January: 14.8°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 February (12.9°C).
Average daylight in January /
Average sunshine in January
Yanai, 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: 5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in January
Yanai, Japan
- Average sunshine days in January: 13.8 days
The month with the most sunshine days is May (18.6 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in January
Yanai, Japan
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in January
Yanai, Japan
- Average cloud cover in January: 43
The months with the most cloud cover are January and June (Cloud cover 43).
The months with the least cloud cover are August, October and November (Cloud cover 32).
Average visibility in January
Yanai, Japan
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, August, September, October, November and December (10km).
The months with the lowest visibility are April, May, June and July (9km).
Yanai, Japan
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