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
January is Niihama's coldest month, registering average high temperatures of 7.3°C (45.1°F) and lows of 2°C (35.6°F).Humidity
In Niihama, Japan, the average relative humidity in January is 73%.Rainfall
January is the month with the least rainfall in Niihama, Japan. Rain falls for 11.3 days and accumulates 46mm (1.81") of precipitation.Snowfall
Months with snowfall are January through March and December. In Niihama, during January, snow falls for 6.6 days and regularly aggregates up to 33mm (1.3") of snow. Throughout the year, in Niihama, there are 17.2 snowfall days, and 106mm (4.17") of snow is accumulated.Sea temperature
In Niihama, in January, the average water temperature is 16.5°C (61.7°F).Note: Most people do not enjoy swimming in water that is 16.5°C (61.7°F). Breathing becomes increasingly challenging as the water temperature dips under 21°C (69.8°F).
Daylight
In January, the average length of the day is 10h and 11min.On the first day of January in Niihama, Japan, sunrise is at 07:11 and sunset at 17:08. On the last day of the month, sunrise is at 07:04 and sunset at 17:35 JST.
Sunshine
January and December, with an average of 5.6h of sunshine, are months with the least sunshine in Niihama, Japan.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 during January leads to these advisories:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What is the coldest time of year in Niihama?
What is the usual temperature for Niihama in January?
What is the average humidity in January in Niihama?
What is the driest month in Niihama?
How many days does it rain in January in Niihama?
How many days does it snow in January in Niihama?
What is the sea water temperature in January in Niihama?
What is the average length of the day in January in Niihama?
What time are sunrise and sunset in January in Niihama?
What are the months with the least sunshine in Niihama?
How many hours of sunshine does Niihama have in January?
When is the lowest UV index in Niihama?
What is the UV index reading in January in Niihama?
Average temperature in January
Niihama, Japan
- Average high temperature in January: 7.3°C
The warmest month (with the highest average high temperature) is August (28.6°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in January: 2°C
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure in January
Niihama, Japan
- Average pressure in January: 1020.7mbar
The month with the highest atmospheric pressure is January (1020.7mbar).
The month with the lowest atmospheric pressure is June (1008.5mbar).
Average wind speed in January
Niihama, Japan
- Average wind speed in January: 11.4km/h
The windiest month (with the highest average wind speed) is January (11.4km/h).
The calmest month (with the lowest average wind speed) is June (6km/h).
Average humidity in January
Niihama, Japan
- Average humidity in January: 73%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is March (72%).
Average rainfall in January
Niihama, Japan
- Average rainfall in January: 46mm
The wettest month (with the highest rainfall) is July (187mm).
The driest month (with the least rainfall) is January (46mm).
Average rainfall days in January
Niihama, Japan
- Average rainfall days in January: 11.3 days
The month with the highest number of rainy days is July (23.9 days).
The month with the least rainy days is January (11.3 days).
Average snowfall in January
Niihama, Japan
- Average snowfall in January: 33mm
The month with the highest snowfall is February (40mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Niihama, Japan
- Average snowfall days in January: 6.6 days
The month with the highest number of snowfall days is January (6.6 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
Niihama, Japan
- Average sea temperature in January: 16.5°C
The best month for swimming (with the highest average sea temperature) is August (27.5°C).
The coldest months (with the lowest average sea temperature) are February and March (15.8°C).
Average daylight in January /
Average sunshine in January
Niihama, 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in January
Niihama, Japan
- Average sunshine days in January: 14.8 days
The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is July (3.8 days).
Average UV index in January
Niihama, 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
Niihama, Japan
- Average cloud cover in January: 39
The month with the most cloud cover is June (Cloud cover 41).
The months with the least cloud cover are May and August (Cloud cover 31).
Average visibility in January
Niihama, Japan
- Average visibility in January: 9km
The months with the highest visibility are August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June and July (9km).
Niihama, Japan
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