Kumamoto weather by month

Check out Kumamoto weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Kumamoto (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
10°C maximum daytime temperature in January in Kumamoto10
11°C maximum daytime temperature in February in Kumamoto11
15°C maximum daytime temperature in March in Kumamoto15
21°C maximum daytime temperature in April in Kumamoto21
25°C maximum daytime temperature in May in Kumamoto25
28°C maximum daytime temperature in June in Kumamoto28
31°C maximum daytime temperature in July in Kumamoto31
33°C maximum daytime temperature in August in Kumamoto33
29°C maximum daytime temperature in September in Kumamoto29
24°C maximum daytime temperature in October in Kumamoto24
18°C maximum daytime temperature in November in Kumamoto18
13°C maximum daytime temperature in December in Kumamoto13
Min temperature (night-time)
0°C minimum night-time temperature in January in Kumamoto0
2°C minimum night-time temperature in February in Kumamoto2
4°C minimum night-time temperature in March in Kumamoto4
10°C minimum night-time temperature in April in Kumamoto10
15°C minimum night-time temperature in May in Kumamoto15
19°C minimum night-time temperature in June in Kumamoto19
24°C minimum night-time temperature in July in Kumamoto24
24°C minimum night-time temperature in August in Kumamoto24
20°C minimum night-time temperature in September in Kumamoto20
13°C minimum night-time temperature in October in Kumamoto13
7°C minimum night-time temperature in November in Kumamoto7
2°C minimum night-time temperature in December in Kumamoto2
Heat & Humidity
No heat & humidity in January in Kumamoto0
No heat & humidity in February in Kumamoto0
No heat & humidity in March in Kumamoto0
No heat & humidity in April in Kumamoto0
Low heat & humidity in May in KumamotoL
Moderate heat & humidity in June in KumamotoM
Very high heat & humidity in July in KumamotoVH
Very high heat & humidity in August in KumamotoVH
Moderate heat & humidity in September in KumamotoM
No heat & humidity in October in Kumamoto0
No heat & humidity in November in Kumamoto0
No heat & humidity in December in Kumamoto0
Sea temperature
16°C sea temperature in January in Kumamoto16
15°C sea temperature in February in Kumamoto15
16°C sea temperature in March in Kumamoto16
17°C sea temperature in April in Kumamoto17
19°C sea temperature in May in Kumamoto19
22°C sea temperature in June in Kumamoto22
26°C sea temperature in July in Kumamoto26
27°C sea temperature in August in Kumamoto27
26°C sea temperature in September in Kumamoto26
23°C sea temperature in October in Kumamoto23
21°C sea temperature in November in Kumamoto21
18°C sea temperature in December in Kumamoto18

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

Sunshine & Daylight in Kumamoto

  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 Kumamoto10
11 hours of daylight per day in February in Kumamoto11
12 hours of daylight per day in March in Kumamoto12
13 hours of daylight per day in April in Kumamoto13
14 hours of daylight per day in May in Kumamoto14
14 hours of daylight per day in June in Kumamoto14
14 hours of daylight per day in July in Kumamoto14
13 hours of daylight per day in August in Kumamoto13
12 hours of daylight per day in September in Kumamoto12
11 hours of daylight per day in October in Kumamoto11
10 hours of daylight per day in November in Kumamoto10
10 hours of daylight per day in December in Kumamoto10
UV Index (Maximum)
UV (maximum) index 3 (Moderate) in January in Kumamoto3
UV (maximum) index 5 (Moderate) in February in Kumamoto5
UV (maximum) index 7 (High) in March in Kumamoto7
UV (maximum) index 9 (Very High) in April in Kumamoto9
UV (maximum) index 10 (Very High) in May in Kumamoto10
UV (maximum) index 11 (Extreme) in June in Kumamoto11
UV (maximum) index 11 (Extreme) in July in Kumamoto11
UV (maximum) index 11 (Extreme) in August in Kumamoto11
UV (maximum) index 9 (Very High) in September in Kumamoto9
UV (maximum) index 6 (High) in October in Kumamoto6
UV (maximum) index 4 (Moderate) in November in Kumamoto4
UV (maximum) index 3 (Moderate) in December in Kumamoto3

Rainfall in Kumamoto

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
17 days with some rainfall in January in Kumamoto17
17 days with some rainfall in February in Kumamoto17
18 days with some rainfall in March in Kumamoto18
17 days with some rainfall in April in Kumamoto17
16 days with some rainfall in May in Kumamoto16
19 days with some rainfall in June in Kumamoto19
20 days with some rainfall in July in Kumamoto20
18 days with some rainfall in August in Kumamoto18
17 days with some rainfall in September in Kumamoto17
13 days with some rainfall in October in Kumamoto13
13 days with some rainfall in November in Kumamoto13
16 days with some rainfall in December in Kumamoto16
Average monthly rainfall (mm)
62 mm monthly rainfall in January in Kumamoto62
80 mm monthly rainfall in February in Kumamoto80
125 mm monthly rainfall in March in Kumamoto125
168 mm monthly rainfall in April in Kumamoto168
209 mm monthly rainfall in May in Kumamoto209
396 mm monthly rainfall in June in Kumamoto396
389 mm monthly rainfall in July in Kumamoto389
197 mm monthly rainfall in August in Kumamoto197
169 mm monthly rainfall in September in Kumamoto169
96 mm monthly rainfall in October in Kumamoto96
74 mm monthly rainfall in November in Kumamoto74
50 mm monthly rainfall in December in Kumamoto50

More about Kumamoto

Kumamoto by month

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

Recommended for Japan

Travelbag: Latest holiday sale offers worldwide

  • Explore latest sale offers on holidays in 2025/2026
  • Filter deals by continent, star rating & holiday type
  • Including Dubai, Caribbean, North America, Asia & Pacific
Go to Travelbag deal >>

View all Travelbag offers

TravelbagHoliday deal finder

The climate guide for Japan (Kumamoto) 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.

What's the climate like in Kumamoto?

Kumamoto has a temperate climate with hot summers and some rainfall in all months.

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

Back to top

More about Japan

Compare Kumamoto with the UK

Below the Kumamoto chart shows average maximum daytime temperature for Kumamoto, Japan and the UK (London).

Maximum daytime temperature (°C)

Kumamoto, Japan
UK (London)
10
7
11
7
15
10
21
13
25
17
28
20
31
22
33
22
29
19
24
15
18
10
13
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

Compare more Kumamoto weather >>

Back to top

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^