Iwakura monthly weather averages

Average daytime temperature

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

Iwakura average temperature chart (Celsius) Iwakura average temperature chart (Fahrenheit)
Average monthly temperatures in Iwakura (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.5 9.3 12.8 19.2 23.8 26.6 30.3 32.3 28 22.3 16.8 11.2
°F 47.3 48.7 55.1 66.6 74.8 79.9 86.6 90.1 82.4 72.2 62.2 52.2

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.

Iwakura monthly rainfall chart (mm) Iwakura monthly rainfall chart (inches)
Average monthly rainfall in Iwakura (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 52 73 119 167 171 246 239 155 224 120 79 45
inches 2 2.9 4.7 6.6 6.7 9.7 9.4 6.1 8.8 4.7 3.1 1.8
Rainy days 16 16 17 15 14 18 19 16 18 14 14 15

Average annual rainfall in Iwakura: 1861.467mm (732.9 inches)

Average daily sunshine

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

Iwakura average daily sunshine chart
Average daily sunshine Iwakura
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.6 5.8 6.3 6.2 6.9 5.3 5.7 6.9 5.1 5.6 5.5 5.5

Day / night temperatures

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

Iwakura average minimum / maximum temperatures (Celsius) Iwakura average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Iwakura (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 0.3 0.7 3.4 9.6 14.2 18.8 22.9 24.2 20.2 13.5 7.6 2.6
Max °C 8.7 9.5 13.1 19.5 24 26.8 30.5 32.5 28.2 22.6 17 11.5
Min °F 32.5 33.3 38 49.2 57.6 65.8 73.2 75.5 68.4 56.2 45.7 36.6
Max °F 40.1 41.2 46.8 58.1 66.4 73 80.1 82.9 75.6 64.4 54.1 44.6

Sea temperature

The graph below shows the average sea temperature.

Iwakura average sea temperature chart (Celsius) Iwakura average sea temperature chart (Fahrenheit)
Average sea temperature around Iwakura in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.8 13.7 13.6 14.8 17.6 21 24.4 27 25.7 22.8 20 17.2
°F 58.7 56.6 56.5 58.7 63.7 69.9 76 80.5 78.2 73 68.1 63

Wind speed

The graph below shows the average wind speed.

Iwakura average winspeed by month (km/h) Iwakura average winspeed by month (mph)
Average wind speed in Iwakura (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 10 11 11 11 10 9 8 9 8 8 9 9
mph 6 7 7 7 6 6 5 5 5 5 5 6

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.

Iwakura relative humidity averages
Average relative humidity in Iwakura
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 65% 62% 66% 68% 75% 78% 75% 75% 70% 69% 68%

Other monthly averages

UV index Best time to go?

Iwakura weather stats

Iwakura weather statistics
Hottest month: August 32.3°C 90.1°F
Driest month: December 45mm 1.8ins
Sunniest month: January 5.6hrs
Coldest month: January 8.5°C 47.3°F
Wettest month: June 246mm 9.7ins
Warmest sea: August 27°C 80.6°F
Map showing location of Iwakura (35.28333, 136.86667) Iwakura map pin © Google

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