January weather forecast
Karuizawa, Japan

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Contents

January

Weather in January

A tranquil, frost-bitten beauty describes Karuizawa in January, the heart of the winter season. The winter weather transition is now in full swing with remarkably cold temperatures ranging from minus 9.5°C (49.1°F) to 1.9°C (35.4°F), and a noticeable 290mm (11.42") of snowfall that blankets the streets. The city is known for its intriguing winter activities that embrace the snowy conditions, providing tourists and locals alike with beautiful sights and experiences. Despite the short daylight hours, the sun still manages to cast a soft glow over the town. With January as one of the coldest months in the year, it is an ideal destination for those who enjoy the charming allure of winter.

Temperature

With its high average temperature of 1.9°C (35.4°F) and a low of -9.5°C (14.9°F), January is regarded as the coldest month.

Humidity

The average relative humidity in January is 74%.

Rainfall

During January, Karuizawa regularly aggregates up to 30mm (1.18") of precipitation. Throughout the year, 1211mm (47.68") of rain is accumulated.

Snowfall

January through April, October through December are months with snowfall in Karuizawa. In Karuizawa, in January, 290mm (11.42") of snow is typically accumulated. Throughout the year, in Karuizawa, 1370mm (53.94") of snow is accumulated.

Daylight

In Karuizawa, the average length of the day in January is 10h and 0min.
On the first day of the month, sunrise is at 06:56 and sunset at 16:40. On the last day of January, in Karuizawa, sunrise is at 06:48 and sunset at 17:09 JST.

Sunshine

In January, the average sunshine is 5.5h.
Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Karuizawa?
Karuizawa's temperature records reveal January as the coldest month, marked by average highs of 1.9°C (35.4°F) and lows of -9.5°C (14.9°F).
How cold is January in Karuizawa?
The high-temperature, in January, in Karuizawa, records 1.9°C (35.4°F), while the low-temperature is -9.5°C (14.9°F).
What is the average humidity in January in Karuizawa?
The average relative humidity in January in Karuizawa, Japan, is 74%.
How much does it rain in Karuizawa in January?
Throughout January, 30mm (1.18") of precipitation is accumulated.
How much does it snow in Karuizawa in January?
Throughout January, in Karuizawa, Japan, 290mm (11.42") of snow is accumulated.
What is the average length of the day in January in Karuizawa?
In January, the average day length in Karuizawa is 10h and 0min.
What time are sunrise and sunset in January in Karuizawa?
On the first day of January, sunrise is at 06:56 and sunset at 16:40. On the last day of the month, sunrise is at 06:48 and sunset at 17:09 JST.
How long on average sun shines in January in Karuizawa?
In Karuizawa, the average sunshine duration in January is 5.5h.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
4.8°C
1.9°C
2.3°C
Average low temperature
-6.4°C
-9.5°C
-9°C
Average humidity
74%
74%
75%
Average rainfall
23.3mm
29.9mm
43mm
Average snowfall
160mm
290mm
430mm
Average daylight
9h 4min
10h 0min
10h 5min
Average sunshine
5h 2min
5h 3min
5h 4min
Average temperature in January
Karuizawa, Japan
  • Average high temperature in January: 1.9°C

The warmest month (with the highest average high temperature) is August (25.5°C).
The month with the lowest average high temperature is January (1.9°C).

  • Average low temperature in January: -9.5°C

The month with the highest average low temperature is August (16.2°C).
The coldest month (with the lowest average low temperature) is January (-9.5°C).

Average humidity in January
Karuizawa, Japan
  • Average humidity in January: 74%

The month with the highest relative humidity is September (88%).
The month with the lowest relative humidity is April (72%).

Average rainfall in January
Karuizawa, Japan
  • Average rainfall in January: 29.9mm

The wettest month (with the highest rainfall) is June (187.4mm).
The driest month (with the least rainfall) is December (23.3mm).

Average snowfall in January
Karuizawa, Japan
  • Average snowfall in January: 290mm

The month with the highest snowfall is February (430mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average daylight in January /
Average sunshine in January
Karuizawa, Japan
  • Average daylight in January: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in January: 5h and 3min

The month with the most sunshine is May (Average sunshine: 6h and 12min).
The month with the least sunshine is September (Average sunshine: 3h and 36min).

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