8 to 30°C
temperature
2655 hours
sunshine per day
760 mm
rain
181 days
dry
170 days
rain
14 days
snow

Climate of Nagano

Nagano has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Nagano is 19° degrees and there is about 760 mm of rain in a year. It is dry for 161 days a year with an average humidity of 77% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 8°C and 30°C
  • Night:the average nighttime temperature is between 4°C and 24°C
  • Sea temperature: the sea temperature is between 15°C and 29°C
  • Rain: it rains 170 days and there is a total of approximately 760 mm rainfall
  • Snow: it snows an average of 14 days per year
  • Sun hours: throughout the year there are 2655 sun hours
Maximum temperature: between 8°C and 30°C
Warmest month: 30°C in August
Coldest month: 8°C in January
Night temperature: between 4°C and 24°C
Sea temperature: between 15°C and 29°C
Dry days: 181 days
Days with rain: 170 days
Days with snow: 14 days
Total rain sum: 760 mm
Hours of sunshine: 2655 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Nagano.

Precipitation graph

This graph shows the average amount of rainfall per month for Nagano.

Climate table of Nagano

In this climate table you can see at a glance what the average weather per month is for Nagano. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Nagano might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 8 9 12 17 21 24 28 30 26 21 16 10
Night temp. (°C) 4 4 7 10 14 19 23 24 20 16 11 6
Water temp. (°C) 17 15 16 17 19 21 29 28 26 23 20 17
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 34 44 55 60 55 107 112 69 67 54 46 57
Days with rain 13 13 14 13 10 16 20 16 14 10 13 18
Days with snow 5 4 1 - - - - - - - - 4
Dry days 13 11 16 17 21 14 11 15 16 21 17 9
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 4 5 7 9 9 8 10 11 9 6 5 4
Wind force (Bft) 3 3 3 3 2 2 2 2 2 3 3 3
UV-index 2 3 3 4 5 5 7 6 5 4 3 2

Best time to visit Nagano

The best time to visit Nagano in Japan is from May and August through October. In this period you have a warm temperature and little precipitation. The highest average temperature in Nagano is 30°C in August and the lowest is 8°C in January. The water temperature is 29°C at its highest and in other months it can be 15°C.

Climate of Nagano by month

What is the average climate in a given month for Nagano? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Nagano weather experiences

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