Hachiōji monthly weather averages

Contents

Average daytime temperature

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

Hachiōji average temperature chart (Celsius) Hachiōji average temperature chart (Fahrenheit)
Average monthly temperatures in Hachiōji (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.1 8.4 11.5 17.4 21.7 24.1 27.6 29.4 24.9 19.5 15.3 10.7
°F 46.6 47.2 52.8 63.2 71.1 75.3 81.7 84.9 76.8 67.2 59.5 51.2

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.

Hachiōji monthly rainfall chart (mm) Hachiōji monthly rainfall chart (inches)
Average monthly rainfall in Hachiōji (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 39 53 94 115 139 201 157 203 207 160 74 38
inches 1.5 2.1 3.7 4.5 5.5 7.9 6.2 8 8.1 6.3 2.9 1.5
Rainy days 8 11 15 16 15 20 20 17 19 15 11 7

Average annual rainfall in Hachiōji: 1654.333mm (651.3 inches)

Average daily sunshine

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

Hachiōji average daily sunshine chart
Average daily sunshine Hachiōji
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.6 6.2 6.1 5.9 6.3 4.4 4.8 6 4.2 4.7 5.4 6.4

Day / night temperatures

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

Hachiōji average minimum / maximum temperatures (Celsius) Hachiōji average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Hachiōji (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -2.8 -1.9 1.2 7.2 11.9 16.4 20.2 21.4 17.6 11.1 5.3 -0.1
Max °C 8.4 8.7 11.8 17.6 22 24.3 27.8 29.6 25.1 19.8 15.5 11
Min °F 27.1 28.6 34.2 45 53.3 61.4 68.4 70.5 63.6 51.9 41.5 31.7
Max °F 37 38.1 43.7 54.3 62.4 68.5 75.2 77.9 70.3 59.7 50.7 41.7

Sea temperature

The graph below shows the average sea temperature.

Hachiōji average sea temperature chart (Celsius) Hachiōji average sea temperature chart (Fahrenheit)
Average sea temperature around Hachiōji in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 16.7 15.7 15.9 17.3 19.9 22.2 24.5 26.3 25.3 22.9 20.9 18.6
°F 62.1 60.3 60.6 63.1 67.8 72 76.1 79.4 77.6 73.2 69.6 65.5

Wind speed

The graph below shows the average wind speed.

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

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.

Hachiōji relative humidity averages
Average relative humidity in Hachiōji
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
58% 60% 62% 68% 71% 79% 81% 79% 80% 76% 70% 63%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Hachiōji weather stats

Hachiōji weather statistics
Hottest month: August 29.4°C 84.9°F
Driest month: December 38mm 1.5ins
Sunniest month: January 6.6hrs
Coldest month: January 8.1°C 46.6°F
Wettest month: September 207mm 8.1ins
Warmest sea: August 26.3°C 79.3°F
Map showing location of Hachiōji (35.65583, 139.32389) Hachiōji map pin © Google

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