Temperatures in January
It's cold in January in Nagano with an average temperature of 4°C. Temperatures this month range from a low of 3°C to a high of 5°C. At night, you can expect temperatures between -5°C and -2°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Nagano in January. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of January
The month of January starts in Nagano with cold temperatures, averaging around 5°C during the day and nights close to -2°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
Mid-January
By mid-January, the average daytime temperature stays the same at 5°C, with nights close to -3°C. There might be a few showers during this period, but plenty of dry days with sunshine too. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
End of January
By the end of January, the average daytime temperature in Nagano will be around 5°C, with nights close to -3°C. A shower might show up, but overall the weather will be dry and sunny. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
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Precipitation in January
In January, there is an average of 70 mm of precipitation, spread over 15 days. Of the total precipitation, about 83 cm falls as snow in January. The wind speed is around 3 Bft, mostly coming from the Southeast.
The average precipitation chance is 49% per day this month.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in January for Nagano. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Nagano in January |
London | ||
|---|---|---|---|
 Average Temperature |
4°C | 8°C | |
 High Temp |
5°C | 9°C | |
| Low Temp |
3°C | 6°C | |
 Total Precipitation |
70 mm | 58 mm | |
| Rainy Days |
15 days | 9 days | |
 Total Snowfall |
83 cm | 0,8 cm | |
| Snowy Days |
26 days | 1 day | |
December
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Temperature records for Nagano in January
With 12°C, Nagano hit the highest temperature in the last 10 years in January 2016. The lowest daytime temperature in this month was -5°C in 2023. The extreme night temperatures ranged from a low of -12°C to a high of 6°C.
Check out the climate of Nagano for all months and discover the best travel time
Curious about the climate in other parts of Japan? Check out the weather and climate in places like Tokyo, Kyōto, Osaka, or have a look at other destinations in Japan.
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Daily Temperature in January in Nagano
This chart shows the average daily temperatures, both day and night, for each day in January in Nagano, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in January in Nagano
The chart below shows the average daily precipitation in January for Nagano, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for January, you can expect around 15 days of rain in Nagano.
Daily Snowfall in January in Nagano
This chart shows the average daily snowfall in January in Nagano, measured in centimetres. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in January.
Daily UV Index in January in Nagano
This chart shows the average daily UV index in January in Nagano, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in Nagano Over the Years
This chart shows the average temperature in January in Nagano, measured in degrees Celsius, over the past years.
Total Precipitation in January in Nagano Over the Years
This chart shows the average precipitation in January in Nagano, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in January in Nagano per year
This chart shows the average snowfall in January in Nagano, measured in centimetres, over the past years.
Daily climate in January for Nagano
Click on a specific day in January for detailed info on the typical weather on that day in Nagano. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in Nagano
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Average Weather in Nagano by Month
Click on a month below to see detailed weather info for Nagano. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
