Seto monthly weather averages

Average daytime temperature

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

Seto average temperature chart (Celsius) Seto average temperature chart (Fahrenheit)
Average monthly temperatures in Seto (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.5 8.4 12.1 18.7 23.3 26 29.7 31.5 27.3 21.6 16 10.3
°F 45.6 47.2 53.8 65.6 73.9 78.8 85.5 88.8 81.1 70.8 60.8 50.6

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.

Seto monthly rainfall chart (mm) Seto monthly rainfall chart (inches)
Average monthly rainfall in Seto (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 44 69 117 161 168 239 230 155 216 118 75 39
inches 1.7 2.7 4.6 6.3 6.6 9.4 9 6.1 8.5 4.6 2.9 1.5
Rainy days 16 16 17 16 15 18 19 16 18 15 13 14

Average annual rainfall in Seto: 1801.833mm (709.4 inches)

Average daily sunshine

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

Seto average daily sunshine chart
Average daily sunshine Seto
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.7 5.9 6.3 6.2 6.8 5.2 5.6 6.8 5 5.5 5.5 5.5

Day / night temperatures

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

Seto average minimum / maximum temperatures (Celsius) Seto average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Seto (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -0.8 -0.3 2.5 8.7 13.5 18 22.1 23.3 19.4 12.6 6.8 1.7
Max °C 7.8 8.7 12.4 18.9 23.5 26.2 29.9 31.8 27.5 21.8 16.3 10.6
Min °F 30.7 31.6 36.4 47.7 56.3 64.4 71.8 73.9 66.8 54.7 44.2 35
Max °F 38.3 39.6 45.3 56.8 65.3 71.8 78.8 81.5 74.1 63 52.7 43

Sea temperature

The graph below shows the average sea temperature.

Seto average sea temperature chart (Celsius) Seto average sea temperature chart (Fahrenheit)
Average sea temperature around Seto in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 16.4 15.4 15.5 16.7 19.2 22.1 25.1 27.2 26 23.4 21 18.5
°F 61.5 59.7 60 62.1 66.5 71.8 77.1 80.9 78.8 74.1 69.8 65.3

Wind speed

The graph below shows the average wind speed.

Seto average winspeed by month (km/h) Seto average winspeed by month (mph)
Average wind speed in Seto (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 10 12 12 11 10 9 9 9 9 9 9 10
mph 7 7 7 7 6 6 5 6 5 5 6 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.

Seto relative humidity averages
Average relative humidity in Seto
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
67% 66% 63% 66% 69% 75% 79% 76% 76% 72% 70% 69%

Other monthly averages

UV index Best time to go?

Seto weather stats

Seto weather statistics
Hottest month: August 31.5°C 88.7°F
Driest month: December 39mm 1.5ins
Sunniest month: January 5.7hrs
Coldest month: January 7.5°C 45.5°F
Wettest month: June 239mm 9.4ins
Warmest sea: August 27.2°C 81°F
Map showing location of Seto (35.23333, 137.1) Seto map pin © Google

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