Nikkō monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Nikkō

Nikkō average temperature chart (Celsius) Nikkō average temperature chart (Fahrenheit)
Average monthly temperatures in Nikkō (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.9 1.1 4.6 11.6 16.6 19.2 22.9 24.5 19.8 14.3 9.5 4.2
°F 33.6 34 40.3 52.9 61.9 66.5 73.2 76 67.7 57.7 49.1 39.6

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Nikkō monthly rainfall chart (mm) Nikkō monthly rainfall chart (inches)
Average monthly rainfall in Nikkō (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 43 60 83 129 147 221 223 318 285 159 86 41
inches 1.7 2.4 3.2 5.1 5.8 8.7 8.8 12.5 11.2 6.3 3.4 1.6
Rainy days 21 20 21 18 18 22 24 22 22 17 16 19

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Nikkō

Nikkō average daily sunshine chart
Average daily sunshine Nikkō
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.1 6 6.4 6.2 6.5 4.5 4.4 5.3 3.9 4.7 5.4 5.9

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Nikkō average minimum / maximum temperatures (Celsius) Nikkō average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Nikkō (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -8.1 -7.8 -5.1 0.9 6 11.1 15.4 16.6 12.4 5.5 0.1 -5.1
Max °C 1.1 1.4 4.9 11.9 16.9 19.4 23.1 24.7 20 14.5 9.8 4.5
Min °F 17.4 18.1 22.9 33.6 42.7 51.9 59.6 61.8 54.3 41.9 32.1 22.9
Max °F 25.7 26.2 31.8 43.5 52.5 59.4 66.6 69.1 61.2 50 40.8 31.5

Sea temperature

The graph below shows the average sea temperature.

Nikkō average sea temperature chart (Celsius) Nikkō average sea temperature chart (Fahrenheit)
Average sea temperature around Nikkō in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 15.5 14.2 14.3 15.8 18.5 21.2 23.7 26 25 22.4 20.2 17.7
°F 59.9 57.6 57.8 60.5 65.2 70.2 74.7 78.8 77 72.4 68.3 63.9

Wind speed

The graph below shows the average wind speed.

Nikkō average winspeed by month (km/h) Nikkō average winspeed by month (mph)
Average wind speed in Nikkō (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 13 12 13 12 10 8 8 8 8 9 10 12
mph 8 8 8 7 7 5 5 5 5 6 7 7

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Nikkō relative humidity averages
Average relative humidity in Nikkō
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 67% 67% 69% 72% 82% 85% 84% 84% 78% 72% 68%

Other monthly averages

UV index Best time to go?

Nikkō weather stats

Nikkō weather statistics
Hottest month: August 24.5°C 76.1°F
Driest month: December 41mm 1.6ins
Sunniest month: January 6.1hrs
Coldest month: January 0.9°C 33.6°F
Wettest month: August 318mm 12.5ins
Warmest sea: August 26°C 78.8°F
Map showing location of Nikkō (36.75, 139.61667)

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