Okayama monthly weather averages

Average daytime temperature

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

Okayama average temperature chart (Celsius) Okayama average temperature chart (Fahrenheit)
Average monthly temperatures in Okayama (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.3 8.9 12.5 18.8 23.4 26.6 30.5 31.9 27.5 21.8 16.3 11.1
°F 46.9 48.1 54.4 65.8 74 79.8 86.9 89.3 81.5 71.3 61.3 52

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.

Okayama monthly rainfall chart (mm) Okayama monthly rainfall chart (inches)
Average monthly rainfall in Okayama (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 41 51 76 110 114 180 164 94 191 98 62 32
inches 1.6 2 3 4.3 4.5 7.1 6.5 3.7 7.5 3.9 2.4 1.2
Rainy days 18 17 18 15 14 17 17 13 17 14 14 15

Average daily sunshine

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

Okayama average daily sunshine chart
Average daily sunshine Okayama
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5 5.1 5.8 6.4 7 5.8 6.4 7.5 5.5 5.8 5.2 5

Day / night temperatures

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

Okayama average minimum / maximum temperatures (Celsius) Okayama average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Okayama (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 0.1 0.5 2.9 8.8 13.4 18.7 23.3 24 19.7 12.8 7.1 2.3
Max °C 8.5 9.2 12.7 19 23.6 26.8 30.7 32.1 27.7 22.1 16.5 11.3
Min °F 32.2 32.8 37.2 47.8 56.1 65.6 73.9 75.1 67.5 55 44.8 36.1
Max °F 39.7 40.6 46 57 65.3 72.9 80.6 82.4 74.7 63.3 53.2 44.2

Sea temperature

The graph below shows the average sea temperature.

Okayama average sea temperature chart (Celsius) Okayama average sea temperature chart (Fahrenheit)
Average sea temperature around Okayama 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.

Okayama average winspeed by month (km/h) Okayama average winspeed by month (mph)
Average wind speed in Okayama (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 10 9 8 8 8 7 7 8 7 7 8 9
mph 6 6 5 5 5 5 4 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.

Okayama relative humidity averages
Average relative humidity in Okayama
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
68% 68% 67% 68% 70% 74% 77% 75% 76% 73% 73% 70%

Other monthly averages

UV index Best time to go?

Okayama weather stats

Okayama weather statistics
Hottest month: August 31.9°C 89.4°F
Driest month: December 32mm 1.3ins
Sunniest month: August 7.5hrs
Coldest month: January 8.3°C 46.9°F
Wettest month: September 191mm 7.5ins
Warmest sea: August 27.3°C 81.1°F
Map showing location of Okayama (34.66167, 133.935)

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