yearsofweather

Kumamoto in June:
hot, rain every other day

Kumamoto, Japan · Records from 2006 to 2025. Not a forecast.

Mean high28°Hottest day 34.2° (2022)
Mean low20°Coldest night 13.9° (2024)
Rain days15 days10-21 by year
Rainfall434mmDaylight 14.2 → 14.3 h
Kumamoto's 12 months iBest: October
Trip types Sightseeing on foot Poorfrequent rain and muggy
Humidity81%18 muggy days
Clear days1 day20 overcast days
Mean wind7 km/hRarely windy
Sunrise / sunset (15th)05:08 / 19:26Daylight 14.2 → 14.3 h

Kumamoto in June

The rainy season is in full swing and this has the most wet days of the year. Aso also gets heavy rain in June and July, so on days of steady rain it is safer to swap Aso for city plans. The air is damp and laundry will not dry well.

It was a hot month: 28°C by day and 20°C after dark. About 15 days a month saw rain, enough that a wet-weather plan was worth having. The driest year, 2009, had 10 rain days; the wettest, 2015, had 21.

Highs passed 30°C on 7 days on average. Wet days did not mess around: about 29 mm each, the kind of rain that drives you into a doorway.

Typhoons i No tropical storm passed within 300 km in this month over the last 20 years. Typhoons: May and July to October

Date by date i

‹ May June 2027 July ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-5rain on 32% of days27° 18°
6-12rain on 39% of days28° 19°
13-19rain on 50% of days28° 21°
20-26rain on 64% of days29° 22°
27-30rain on 69% of days30° 23°

0-5/206-8/209-11/2012-20/20

1-5rain on 32% of days27° 18°
6-12rain on 39% of days28° 19°
13-19rain on 50% of days28° 21°
20-26rain on 64% of days29° 22°
27-30rain on 69% of days30° 23°
Tap another date to change

200611mm
20075mm
2008none
200932mm
201035mm
20119mm
20129mm
201356mm
2014none
201550mm
201618mm
20177mm
20188mm
201981mm
202074mm
2021none
2022none
202357mm
202418mm
20251mm
Holidays in June (2027)
  • June 18 Juneteenth (observed)
  • June 19 Juneteenth National Independence Day

1 US holidays (flights fill up)

Day by day temperature i

17°23°30°36° 1815222930

Mean high Mean low Coldest to warmest high in 20 years

Your trip dates, the past 20 years

Trip dates ~

You can also click two dates on the axis. Hover a cell to see that day's rain.
Trip rain days Month rain days
2006
2 d 14 d
2007
0 d 16 d
2008
4 d 18 d
2009
1 d 10 d
2010
1 d 17 d
2011
5 d 18 d
2012
3 d 18 d
2013
2 d 16 d
2014
1 d 12 d
2015
4 d 21 d
2016
3 d 19 d
2017
3 d 15 d
2018
4 d 11 d
2019
1 d 11 d
2020
3 d 16 d
2021
2 d 10 d
2022
3 d 13 d
2023
4 d 12 d
2024
3 d 16 d
2025
5 d 17 d
Years with rain
Tap a date to start, tap another to end. Each cell is that date in one year.
'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
of 20
3
10
8
4
7
6
3
10
7
9
12
7
9
9
13
7
10
11
11
12
13
13
13
12
15
11
11
15
13
16
Rain days on trip
20411532143341323435

No rain1-9 mm10 mm or more Dates outside your trip are dimmed.

One row per year, one cell per day. 2009 had 10 rain days, 2015 had 21.

Kumamoto through the year

MonthHighLowRain daysRainfall
January 11°1°5 days55mm
February 13°3°8 days93mm
March 17°6°11 days127mm
April 22°11°10 days141mm
May 26°16°10 days185mm
June 28°20°15 days434mm
July 32°25°13 days392mm
August 34°25°12 days276mm
September 31°22°9 days142mm
OctoberGood 26°16°6 days91mm
November 19°9°7 days73mm
December 13°3°7 days60mm

Common questions

Does it rain a lot in Kumamoto in June?

Over the past 20 years June averaged 15 rain days (1 mm or more) out of 30. Individual years ran from 10 in the driest to 21 in the wettest.

What should I wear in Kumamoto in June?

Days averaged 28°C and nights 20°C. Pack an umbrella, sandals that can get wet, T-shirts, a light layer for the evenings, sunscreen plus a hat, and insect repellent.

Is June a good time to visit Kumamoto?

On warmth and rain days alone, Kumamoto's easiest month was October. June ranked 6 of 12.

Is Kumamoto humid in June?

Mean relative humidity was 81%, with about 18 muggy days (dew point of 20°C or more) in the month.