Japan climate guide

Temperature in Japan (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
10°C maximum daytime temperature in January in Japan (Tokyo)10
10°C maximum daytime temperature in February in Japan (Tokyo)10
13°C maximum daytime temperature in March in Japan (Tokyo)13
19°C maximum daytime temperature in April in Japan (Tokyo)19
23°C maximum daytime temperature in May in Japan (Tokyo)23
25°C maximum daytime temperature in June in Japan (Tokyo)25
29°C maximum daytime temperature in July in Japan (Tokyo)29
31°C maximum daytime temperature in August in Japan (Tokyo)31
27°C maximum daytime temperature in September in Japan (Tokyo)27
21°C maximum daytime temperature in October in Japan (Tokyo)21
17°C maximum daytime temperature in November in Japan (Tokyo)17
12°C maximum daytime temperature in December in Japan (Tokyo)12
Min temperature (night-time)
0°C minimum night-time temperature in January in Japan (Tokyo)0
1°C minimum night-time temperature in February in Japan (Tokyo)1
4°C minimum night-time temperature in March in Japan (Tokyo)4
9°C minimum night-time temperature in April in Japan (Tokyo)9
14°C minimum night-time temperature in May in Japan (Tokyo)14
18°C minimum night-time temperature in June in Japan (Tokyo)18
22°C minimum night-time temperature in July in Japan (Tokyo)22
24°C minimum night-time temperature in August in Japan (Tokyo)24
20°C minimum night-time temperature in September in Japan (Tokyo)20
14°C minimum night-time temperature in October in Japan (Tokyo)14
8°C minimum night-time temperature in November in Japan (Tokyo)8
3°C minimum night-time temperature in December in Japan (Tokyo)3
Sea temperature
15°C sea temperature in January in Japan (Tokyo)15
14°C sea temperature in February in Japan (Tokyo)14
14°C sea temperature in March in Japan (Tokyo)14
16°C sea temperature in April in Japan (Tokyo)16
18°C sea temperature in May in Japan (Tokyo)18
21°C sea temperature in June in Japan (Tokyo)21
24°C sea temperature in July in Japan (Tokyo)24
26°C sea temperature in August in Japan (Tokyo)26
25°C sea temperature in September in Japan (Tokyo)25
22°C sea temperature in October in Japan (Tokyo)22
19°C sea temperature in November in Japan (Tokyo)19
17°C sea temperature in December in Japan (Tokyo)17

Sunshine & Daylight in Japan

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Japan (Tokyo)10
11 hours of daylight per day in February in Japan (Tokyo)11
12 hours of daylight per day in March in Japan (Tokyo)12
13 hours of daylight per day in April in Japan (Tokyo)13
14 hours of daylight per day in May in Japan (Tokyo)14
15 hours of daylight per day in June in Japan (Tokyo)15
14 hours of daylight per day in July in Japan (Tokyo)14
13 hours of daylight per day in August in Japan (Tokyo)13
12 hours of daylight per day in September in Japan (Tokyo)12
11 hours of daylight per day in October in Japan (Tokyo)11
10 hours of daylight per day in November in Japan (Tokyo)10
10 hours of daylight per day in December in Japan (Tokyo)10

Rainfall in Japan

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
9 days with some rainfall in January in Japan (Tokyo)9
11 days with some rainfall in February in Japan (Tokyo)11
16 days with some rainfall in March in Japan (Tokyo)16
16 days with some rainfall in April in Japan (Tokyo)16
16 days with some rainfall in May in Japan (Tokyo)16
20 days with some rainfall in June in Japan (Tokyo)20
19 days with some rainfall in July in Japan (Tokyo)19
16 days with some rainfall in August in Japan (Tokyo)16
19 days with some rainfall in September in Japan (Tokyo)19
16 days with some rainfall in October in Japan (Tokyo)16
12 days with some rainfall in November in Japan (Tokyo)12
9 days with some rainfall in December in Japan (Tokyo)9
Average monthly rainfall (mm)
43 mm monthly rainfall in January in Japan (Tokyo)43
58 mm monthly rainfall in February in Japan (Tokyo)58
94 mm monthly rainfall in March in Japan (Tokyo)94
119 mm monthly rainfall in April in Japan (Tokyo)119
132 mm monthly rainfall in May in Japan (Tokyo)132
181 mm monthly rainfall in June in Japan (Tokyo)181
128 mm monthly rainfall in July in Japan (Tokyo)128
147 mm monthly rainfall in August in Japan (Tokyo)147
181 mm monthly rainfall in September in Japan (Tokyo)181
158 mm monthly rainfall in October in Japan (Tokyo)158
84 mm monthly rainfall in November in Japan (Tokyo)84
44 mm monthly rainfall in December in Japan (Tokyo)44

More climate for Japan

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Japan (Tokyo)2
UV (maximum) index 3 (Moderate) in February in Japan (Tokyo)3
UV (maximum) index 5 (Moderate) in March in Japan (Tokyo)5
UV (maximum) index 7 (High) in April in Japan (Tokyo)7
UV (maximum) index 9 (Very High) in May in Japan (Tokyo)9
UV (maximum) index 10 (Very High) in June in Japan (Tokyo)10
UV (maximum) index 10 (Very High) in July in Japan (Tokyo)10
UV (maximum) index 10 (Very High) in August in Japan (Tokyo)10
UV (maximum) index 8 (Very High) in September in Japan (Tokyo)8
UV (maximum) index 5 (Moderate) in October in Japan (Tokyo)5
UV (maximum) index 3 (Moderate) in November in Japan (Tokyo)3
UV (maximum) index 2 (Low) in December in Japan (Tokyo)2
Heat & Humidity
No heat & humidity in January in Japan (Tokyo)0
No heat & humidity in February in Japan (Tokyo)0
No heat & humidity in March in Japan (Tokyo)0
No heat & humidity in April in Japan (Tokyo)0
No heat & humidity in May in Japan (Tokyo)0
Low heat & humidity in June in Japan (Tokyo)L
High heat & humidity in July in Japan (Tokyo)H
High heat & humidity in August in Japan (Tokyo)H
Low heat & humidity in September in Japan (Tokyo)L
No heat & humidity in October in Japan (Tokyo)0
No heat & humidity in November in Japan (Tokyo)0
No heat & humidity in December in Japan (Tokyo)0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Going to Japan? Find the best month to visit Japan based on the weather.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Check climate guides for Japan showing average temperature, rainfall & sunshine figures for each month of the year. The climate guide shown above is for Tokyo.

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More about Japan

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The climate guide for Japan, represented by Tokyo, shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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