Onomichi monthly weather averages

Average daytime temperature

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

Onomichi average temperature chart (Celsius) Onomichi average temperature chart (Fahrenheit)
Average monthly temperatures in Onomichi (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.7 8.3 11.7 17.7 22.1 25.5 29.7 31.1 26.9 21.3 15.8 10.5
°F 45.9 47 53 63.8 71.7 77.8 85.4 88 80.4 70.4 60.4 50.9

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.

Onomichi monthly rainfall chart (mm) Onomichi monthly rainfall chart (inches)
Average monthly rainfall in Onomichi (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 38 50 77 119 122 207 178 99 169 95 60 28
inches 1.5 1.9 3 4.7 4.8 8.2 7 3.9 6.6 3.7 2.4 1.1
Rainy days 15 16 16 14 14 16 16 13 16 12 11 13

Average annual rainfall in Onomichi: 1409.067mm (554.8 inches)

Average daily sunshine

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

Onomichi average daily sunshine chart
Average daily sunshine Onomichi
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.9 5 5.9 6.4 7 5.7 6.5 7.5 5.7 5.9 5.4 4.9

Day / night temperatures

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

Onomichi average minimum / maximum temperatures (Celsius) Onomichi average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Onomichi (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -1 -0.6 1.9 7.7 12.3 17.6 22.2 22.9 18.7 11.9 6.2 1.3
Max °C 8 8.6 11.9 17.9 22.3 25.7 29.9 31.3 27.1 21.6 16 10.8
Min °F 30.3 31 35.4 45.9 54.1 63.6 71.9 73.2 65.7 53.3 43.2 34.3
Max °F 38.3 39.2 44.4 55 63.1 70.9 78.8 80.8 73.2 62.1 52 42.8

Sea temperature

The graph below shows the average sea temperature.

Onomichi average sea temperature chart (Celsius) Onomichi average sea temperature chart (Fahrenheit)
Average sea temperature around Onomichi in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 16.2 15 14.9 16.1 18.6 21.8 25.1 27.3 26 23.4 21 18.4
°F 61.1 59 58.9 61.1 65.6 71.3 77.2 81.1 78.9 74.1 69.8 65

Wind speed

The graph below shows the average wind speed.

Onomichi average winspeed by month (km/h) Onomichi average winspeed by month (mph)
Average wind speed in Onomichi (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 8 8 7 7 7 6 6 7 7 7 7 8
mph 5 5 5 5 4 4 4 4 4 4 4 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.

Onomichi relative humidity averages
Average relative humidity in Onomichi
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
69% 69% 67% 68% 71% 76% 78% 75% 76% 73% 72% 71%

Other monthly averages

UV index Best time to go?

Onomichi weather stats

Onomichi weather statistics
Hottest month: August 31.1°C 88°F
Driest month: December 28mm 1.1ins
Sunniest month: August 7.5hrs
Coldest month: January 7.7°C 45.9°F
Wettest month: June 207mm 8.1ins
Warmest sea: August 27.3°C 81.1°F
Map showing location of Onomichi (34.41667, 133.2) Onomichi map pin © Google

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