Iyo monthly weather averages

Average daytime temperature

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

Iyo average temperature chart (Celsius) Iyo average temperature chart (Fahrenheit)
Average monthly temperatures in Iyo (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.1 8.9 12.3 17.9 21.9 25 29.2 30.3 26.6 21.5 16.1 10.9
°F 46.6 47.9 54.1 64.3 71.5 77 84.5 86.5 79.8 70.7 61 51.6

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.

Iyo monthly rainfall chart (mm) Iyo monthly rainfall chart (inches)
Average monthly rainfall in Iyo (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 52 65 100 148 152 265 197 142 177 107 73 39
inches 2 2.5 3.9 5.8 6 10.4 7.8 5.6 7 4.2 2.9 1.5
Rainy days 17 17 17 15 15 18 17 16 17 13 12 15

Average annual rainfall in Iyo: 1683.3mm (662.7 inches)

Average daily sunshine

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

Iyo average daily sunshine chart
Average daily sunshine Iyo
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.5 5.1 5.9 6.2 6.5 5.3 6.4 7.2 5.6 6 5.3 4.8

Day / night temperatures

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

Iyo average minimum / maximum temperatures (Celsius) Iyo average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Iyo (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 0.5 0.8 3.3 8.9 13.3 17.8 22.3 23 19.3 12.9 7.5 2.7
Max °C 8.3 9.1 12.5 18.2 22.2 25.2 29.4 30.5 26.8 21.7 16.3 11.1
Min °F 32.9 33.4 37.9 47.9 55.9 64 72.1 73.3 66.7 55.2 45.5 36.9
Max °F 39.9 40.8 46.2 56.3 63.9 70.7 78.4 80.1 73.4 63.1 53.4 44.4

Sea temperature

The graph below shows the average sea temperature.

Iyo average sea temperature chart (Celsius) Iyo average sea temperature chart (Fahrenheit)
Average sea temperature around Iyo in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 17.6 16.6 16.7 17.8 19.9 22.6 25.7 27.6 26.6 24.3 22.1 19.7
°F 63.7 61.9 62.1 64.1 67.8 72.7 78.3 81.7 79.9 75.7 71.8 67.5

Wind speed

The graph below shows the average wind speed.

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

Iyo relative humidity averages
Average relative humidity in Iyo
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 67% 67% 69% 71% 77% 78% 76% 76% 71% 70% 68%

Other monthly averages

UV index Best time to go?

Iyo weather stats

Iyo weather statistics
Hottest month: August 30.3°C 86.5°F
Driest month: December 39mm 1.5ins
Sunniest month: August 7.2hrs
Coldest month: January 8.1°C 46.6°F
Wettest month: June 265mm 10.4ins
Warmest sea: August 27.6°C 81.7°F
Map showing location of Iyo (33.75139, 132.70139) Iyo map pin © Google

Locations nearby

Top Japan locations