Climate Insights for Kumamoto

Kumamoto Prefecture, Japan

Hottest
August
31°C peak88°F peak
Coldest
January
4°C low38°F low
Wettest
June
372 mm rain14.6 in rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Kumamoto is temperate. The average annual temperature is 17°C and approximately 1,998 mm of precipitation falls per year. Kumamoto receives a notable amount of rainfall throughout the year, including during its driest month. Kumamoto is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 4°C. Light snow can occur between January and December.The climate in Kumamoto is temperate. The average annual temperature is 62°F and approximately 78.7 in of precipitation falls per year. Kumamoto receives a notable amount of rainfall throughout the year, including during its driest month. Kumamoto is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 38°F. Light snow can occur between January and December.

Temperature

0°10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 9°Average: 6°Min: 4°FebMax: 10°Average: 7°Min: 4°MarMax: 15°Average: 11°Min: 8°AprMax: 19°Average: 16°Min: 12°MayMax: 23°Average: 19°Min: 16°JunMax: 26°Average: 23°Min: 20°JulMax: 29°Average: 27°Min: 24°AugMax: 31°Average: 28°Min: 25°SepMax: 28°Average: 25°Min: 22°OctMax: 23°Average: 19°Min: 16°NovMax: 17°Average: 14°Min: 10°DecMax: 11°Average: 8°Min: 5°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°F90°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 49°FAverage: 43°FMin: 38°FFebMax: 51°FAverage: 45°FMin: 39°FMarMax: 58°FAverage: 52°FMin: 46°FAprMax: 66°FAverage: 60°FMin: 54°FMayMax: 73°FAverage: 67°FMin: 61°FJunMax: 78°FAverage: 73°FMin: 69°FJulMax: 85°FAverage: 80°FMin: 76°FAugMax: 88°FAverage: 82°FMin: 77°FSepMax: 83°FAverage: 77°FMin: 72°FOctMax: 74°FAverage: 67°FMin: 61°FNovMax: 63°FAverage: 56°FMin: 50°FDecMax: 52°FAverage: 46°FMin: 41°F
Max
Average
Min

Temperatures in Kumamoto vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 31°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 4°C and an average of 6°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.Temperatures in Kumamoto vary considerably across the year, with a 50°F difference between the coldest and warmest months. The warmest month is August, when average highs reach 88°F and the mean temperature sits around 82°F. January is the coolest month, with minimum temperatures around 38°F and an average of 43°F. Daily temperature variation is modest, with an average difference of 11°F between highs and lows. The sharpest temperature change occurs between October and November, with a 11°F shift in average temperatures.

Precipitation

0mm50mm100mm150mm200mm250mm300mm350mm400mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 79mmSnow: 4mmFebPrecipitation: 107mmSnow: 3mmMarPrecipitation: 143mmSnow: 0mmAprPrecipitation: 150mmSnow: 0mmMayPrecipitation: 220mmSnow: 0mmJunPrecipitation: 372mmSnow: 0mmJulPrecipitation: 294mmSnow: 0mmAugPrecipitation: 206mmSnow: 0mmSepPrecipitation: 168mmSnow: 0mmOctPrecipitation: 102mmSnow: 0mmNovPrecipitation: 84mmSnow: 0mmDecPrecipitation: 74mmSnow: 1mm
Precipitation
Snow
0in2in4in6in8in10in12in14inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 3.1inSnow (in): 2inFebPrecipitation: 4.2inSnow (in): 1inMarPrecipitation: 5.6inSnow (in): 0inAprPrecipitation: 5.9inSnow (in): 0inMayPrecipitation: 8.7inSnow (in): 0inJunPrecipitation: 14.6inSnow (in): 0inJulPrecipitation: 11.6inSnow (in): 0inAugPrecipitation: 8.1inSnow (in): 0inSepPrecipitation: 6.6inSnow (in): 0inOctPrecipitation: 4inSnow (in): 0inNovPrecipitation: 3.3inSnow (in): 0inDecPrecipitation: 2.9inSnow (in): 0in
Precipitation
Snow (in)

Kumamoto is a fairly wet location, receiving approximately 1,998 mm of precipitation annually, which averages out to around 167 mm per month. The wettest month is June, averaging 372 mm of rainfall. July and May also tend to see above-average precipitation. The driest month is December, with just 74 mm. That's 298 mm less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 8cm annually. January is the snowiest month with approximately 4cm.Kumamoto is a fairly wet location, receiving approximately 78.7 in of precipitation annually, which averages out to around 6.6 in per month. The wettest month is June, averaging 14.6 in of rainfall. July and May also tend to see above-average precipitation. The driest month is December, with just 2.9 in. That's 11.7 in less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 3in annually. January is the snowiest month with approximately 2in.

Wind

0km/h5km/h10km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 8km/hFebWind Speed: 9km/hMarWind Speed: 9km/hAprWind Speed: 8km/hMayWind Speed: 8km/hJunWind Speed: 7km/hJulWind Speed: 8km/hAugWind Speed: 7km/hSepWind Speed: 8km/hOctWind Speed: 8km/hNovWind Speed: 7km/hDecWind Speed: 8km/h
Wind Speed
0mph5mph10mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 5mphFebWind Speed: 6mphMarWind Speed: 5mphAprWind Speed: 5mphMayWind Speed: 5mphJunWind Speed: 5mphJulWind Speed: 5mphAugWind Speed: 5mphSepWind Speed: 5mphOctWind Speed: 5mphNovWind Speed: 5mphDecWind Speed: 5mph
Wind Speed

Kumamoto is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.Kumamoto is mildly breezy, with an average annual wind speed of 5mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 5mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1mph between the calmest and windiest months.

Monthly Climate Data

The table below shows monthly climate averages for Kumamoto based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Kumamoto based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
4 °C38 °F
9 °C49 °F
8 km/h5 mph
79 mm3.1 in
4 cm2 in
Feb
4 °C39 °F
10 °C51 °F
9 km/h6 mph
107 mm4.2 in
3 cm1 in
Mar
8 °C46 °F
15 °C58 °F
9 km/h5 mph
143 mm5.6 in
0 cm0 in
Apr
12 °C54 °F
19 °C66 °F
8 km/h5 mph
150 mm5.9 in
0 cm0 in
May
16 °C61 °F
23 °C73 °F
8 km/h5 mph
220 mm8.7 in
0 cm0 in
Jun
20 °C69 °F
26 °C78 °F
7 km/h5 mph
372 mm14.6 in
0 cm0 in
Jul
24 °C76 °F
29 °C85 °F
8 km/h5 mph
294 mm11.6 in
0 cm0 in
Aug
25 °C77 °F
31 °C88 °F
7 km/h5 mph
206 mm8.1 in
0 cm0 in
Sep
22 °C72 °F
28 °C83 °F
8 km/h5 mph
168 mm6.6 in
0 cm0 in
OctCurrent
16 °C61 °F
23 °C74 °F
8 km/h5 mph
102 mm4 in
0 cm0 in
Nov
10 °C50 °F
17 °C63 °F
7 km/h5 mph
84 mm3.3 in
0 cm0 in
Dec
5 °C41 °F
11 °C52 °F
8 km/h5 mph
74 mm2.9 in
1 cm0 in