Niihama monthly weather averages

Contents

Average daytime temperature

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

Niihama average temperature chart (Celsius) Niihama average temperature chart (Fahrenheit)
Average monthly temperatures in Niihama (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.9 7.6 11.1 16.9 21 24 28 29.2 25.5 20.2 14.9 9.7
°F 44.4 45.8 51.9 62.4 69.8 75.2 82.4 84.5 77.9 68.4 58.8 49.4

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.

Niihama monthly rainfall chart (mm) Niihama monthly rainfall chart (inches)
Average monthly rainfall in Niihama (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 46 66 110 177 180 291 234 188 223 121 82 33
inches 1.8 2.6 4.3 7 7.1 11.5 9.2 7.4 8.8 4.8 3.2 1.3
Rainy days 15 16 17 15 15 18 18 16 17 13 11 13

Average annual rainfall in Niihama: 1919.067mm (755.5 inches)

Average daily sunshine

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

Niihama average daily sunshine chart
Average daily sunshine Niihama
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.1 5.3 6 6.2 6.6 5.3 6.3 7.1 5.5 5.9 5.4 5.2

Day / night temperatures

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

Niihama average minimum / maximum temperatures (Celsius) Niihama average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Niihama (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -1.3 -0.9 1.9 7.7 12.2 16.8 21.3 21.9 18.1 11.6 6.1 1.1
Max °C 7.1 7.9 11.3 17.1 21.2 24.2 28.2 29.4 25.7 20.5 15.1 9.9
Min °F 29.7 30.5 35.4 45.9 54 62.2 70.3 71.3 64.6 52.8 43 34
Max °F 37.2 38.3 43.9 54.3 62.1 68.9 76.5 78.1 71.4 60.8 51.1 41.9

Sea temperature

The graph below shows the average sea temperature.

Niihama average sea temperature chart (Celsius) Niihama average sea temperature chart (Fahrenheit)
Average sea temperature around Niihama in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 17.8 16.8 16.9 18.1 20.2 22.9 26 27.7 26.7 24.4 22.2 19.8
°F 64 62.3 62.4 64.5 68.3 73.2 78.8 81.9 80.1 75.9 72 67.6

Wind speed

The graph below shows the average wind speed.

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

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.

Niihama relative humidity averages
Average relative humidity in Niihama
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
67% 68% 67% 70% 72% 78% 80% 77% 77% 72% 71% 69%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Niihama weather stats

Niihama weather statistics
Hottest month: August 29.2°C 84.6°F
Driest month: December 33mm 1.3ins
Sunniest month: August 7.1hrs
Coldest month: January 6.9°C 44.4°F
Wettest month: June 291mm 11.5ins
Warmest sea: August 27.7°C 81.9°F
Map showing location of Niihama (33.95933, 133.31672) Niihama map pin © Google

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