Tokyo monthly weather averages

What's the weather like in Tokyo?

Tokyo has a humid subtropical climate (Köppen climate classification: Cfa), with hot, humid summers and mild to cool winters with occasional cold spells. Summers temperatures range from an average of 80°F (27°C) in June to 86°F (30°C) in August when temperatures can reach up to 95°F (35°C).

Winters in Tokyo are mild and damp, with temperatures ranging from an average of 40°F (4°C) in December to 47°F (8°C) in February. The coldest part of winter is in January, when temperatures can drop down to 28°F (-2°C). Spring and fall/autumn are mild and pleasant; temperatures range from an average of 50°F (10°C) in April to 68°F (20°C) in October.

Rainfall is quite evenly distributed throughout the year, but the wettest months are June, July and September. Snow is rare in Tokyo, but the city does usually get some snowfall each winter.

Average daytime temperature

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

Tokyo average temperature chart (Celsius) Tokyo average temperature chart (Fahrenheit)
Average monthly temperatures in Tokyo (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.5 9.8 12.7 18.3 22.8 25.1 28.6 30.8 26.4 21.2 16.4 12
°F 49.1 49.6 54.8 65 73 77.2 83.5 87.4 79.6 70.1 61.6 53.7

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.

Tokyo monthly rainfall chart (mm) Tokyo monthly rainfall chart (inches)
Average monthly rainfall in Tokyo (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 43 58 95 119 132 181 128 147 181 158 84 44
inches 1.7 2.3 3.7 4.7 5.2 7.1 5 5.8 7.1 6.2 3.3 1.7
Rainy days 9 11 16 16 16 20 19 16 19 16 12 9

Average annual rainfall in Tokyo: 1545.4mm (608.4 inches)

Average daily sunshine

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

Tokyo average daily sunshine chart
Average daily sunshine Tokyo
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.4 6 5.9 5.8 6.3 4.4 4.8 6.2 4.2 4.7 5.2 6.1

Day / night temperatures

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

Tokyo average minimum / maximum temperatures (Celsius) Tokyo average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Tokyo (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 0.3 1 3.7 9.5 14.4 18.4 22.1 23.7 19.8 13.7 8 3
Max °C 9.7 10 12.9 18.6 23 25.3 28.8 31 26.6 21.4 16.7 12.3
Min °F 32.5 33.8 38.7 49 57.9 65 71.7 74.6 67.6 56.6 46.3 37.3
Max °F 41 41.9 46.9 57.2 65.7 71.2 77.7 81.1 73.8 63.5 54.1 45.7

Sea temperature

The graph below shows the average sea temperature.

Tokyo average sea temperature chart (Celsius) Tokyo average sea temperature chart (Fahrenheit)
Average sea temperature around Tokyo in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 16.7 15.7 15.9 17.3 19.9 22.2 24.5 26.3 25.3 22.9 20.9 18.6
°F 62.1 60.3 60.6 63.1 67.8 72 76.1 79.4 77.6 73.2 69.6 65.5

Wind speed

The graph below shows the average wind speed.

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

Tokyo relative humidity averages
Average relative humidity in Tokyo
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
54% 56% 59% 66% 69% 76% 79% 76% 77% 71% 65% 59%
Tokyo

Other monthly averages

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Tokyo weather stats

Tokyo weather statistics
Hottest month: August 30.8°C 87.4°F
Driest month: January 43mm 1.7ins
Sunniest month: January 6.4hrs
Coldest month: January 9.5°C 49.1°F
Wettest month: June 181mm 7.1ins
Warmest sea: August 26.3°C 79.3°F
Map showing location of Tokyo (35.6895, 139.69171) Tokyo map pin © Google

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