January 11° · ☂ 5 February 13° · ☂ 8 March 17° · ☂ 11 April 22° · ☂ 10 May 26° · ☂ 10 June 28° · ☂ 15 July 32° · ☂ 13 August 34° · ☂ 12 September 31° · ☂ 9 ★ October26° · ☂ 6 November 19° · ☂ 7 December 13° · ☂ 7 Kumamoto in August:very hot, Kumamoto, Japan · Records from 2006 to 2025. Not a forecast.
Mean high 34° Hottest day 38.1° (2016)
Mean low 25° Coldest night 19.3° (2009)
Rain days 12 days 5-21 by year
Rainfall 276mm Daylight 13.8 → 12.9 h
Kumamoto's 12 months i Best: October
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Sightseeing on foot Poorhot, frequent rain, muggy and storm risk
Humidity 78% 30 muggy days
Clear days 6 days 11 overcast days
Mean wind 7 km/h Rarely windy
Sunrise / sunset (15th) 05:40 / 19:03 Daylight 13.8 → 12.9 h
Kumamoto in August The hottest month of the year. The Yamaga Lantern Festival is held on the nights of August 15 and 16 in nearby Yamaga. It overlaps Obon, so domestic travel is heavy. If a typhoon crosses Kyushu, transport can stop.
It was a hot month: 34°C by day and 25°C after dark. Rain fell on 12 days of the month on average. It varied a lot from year to year. August 2016 had 5 rain days; 2014 had 21.
29 days past 30°C made it a month for early starts and a long lunch indoors. August 2024 averaged 35.8°C by day, 2.1°C above the 20-year mean. Rain days averaged 22 mm each, so when it rained it rained properly.
Typhoons i 12 of the last 20 years had a tropical storm pass within 300 km this month.
Francisco (2019), 15 km away typhoon strength Wukong (2006), 20 km away tropical storm Shanshan (2024), 23 km away typhoon strength 1 2 3 4 1 5 6 6 7 12 8 13 9 4 10 11 12
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
August 1 Sunday 1 rain in 9 of 20 yrs 9/20 34° 25° August 2 Monday 2 rain in 4 of 20 yrs 4/20 35° 26° August 3 Tuesday 3 rain in 2 of 20 yrs 2/20 35° 25° August 4 Wednesday 4 rain in 6 of 20 yrs 6/20 34° 26° August 5 Thursday 5 rain in 4 of 20 yrs 4/20 35° 26° August 6 Friday 6 rain in 6 of 20 yrs 6/20 35° 26° August 7 Saturday 7 rain in 8 of 20 yrs 8/20 35° 26° 1-7 rain on 28% of days 35° 26°
August 8 Sunday 8 rain in 8 of 20 yrs 8/20 34° 26° August 9 Monday 9 rain in 10 of 20 yrs 10/20 34° 25° August 10 Tuesday 10 rain in 6 of 20 yrs 6/20 34° 26° August 11 Wednesday 11 rain in 7 of 20 yrs 7/20 34° 25° August 12 Thursday 12 rain in 8 of 20 yrs 8/20 34° 26° August 13 Friday 13 rain in 8 of 20 yrs 8/20 34° 26° August 14 Saturday 14 rain in 7 of 20 yrs 7/20 34° 25° 8-14 rain on 39% of days 34° 25°
August 15 Sunday 15 rain in 9 of 20 yrs 9/20 33° 25° August 16 Monday 16 rain in 12 of 20 yrs 12/20 34° 25° August 17 Tuesday 17 rain in 10 of 20 yrs 10/20 33° 25° August 18 Wednesday 18 rain in 8 of 20 yrs 8/20 34° 25° August 19 Thursday 19 rain in 11 of 20 yrs 11/20 33° 25° August 20 Friday 20 rain in 7 of 20 yrs 7/20 34° 25° August 21 Saturday 21 rain in 8 of 20 yrs 8/20 34° 25° 15-21 rain on 46% of days 34° 25°
August 22 Sunday 22 rain in 9 of 20 yrs 9/20 34° 25° August 23 Monday 23 rain in 9 of 20 yrs 9/20 33° 25° August 24 Tuesday 24 rain in 10 of 20 yrs 10/20 33° 25° August 25 Wednesday 25 rain in 12 of 20 yrs 12/20 33° 25° August 26 Thursday 26 rain in 9 of 20 yrs 9/20 33° 24° August 27 Friday 27 rain in 6 of 20 yrs 6/20 33° 24° August 28 Saturday 28 rain in 7 of 20 yrs 7/20 33° 24° 22-28 rain on 44% of days 33° 25°
August 29 Sunday 29 rain in 9 of 20 yrs 9/20 33° 24° August 30 Monday 30 rain in 11 of 20 yrs 11/20 32° 24° August 31 Tuesday 31 rain in 9 of 20 yrs 9/20 32° 24°
29-31 rain on 48% of days 32° 24°
1-7 rain on 28% of days 35° 26° 8-14 rain on 39% of days 34° 25° 15-21 rain on 46% of days 34° 25° 22-28 rain on 44% of days 33° 25° 29-31 rain on 48% of days 32° 24°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
August 1 Tuesday 1 rain in 9 of 20 yrs 9/20 34° 25° August 2 Wednesday 2 rain in 4 of 20 yrs 4/20 35° 26° August 3 Thursday 3 rain in 2 of 20 yrs 2/20 35° 25° August 4 Friday 4 rain in 6 of 20 yrs 6/20 34° 26° August 5 Saturday 5 rain in 4 of 20 yrs 4/20 35° 26° 1-5 rain on 25% of days 35° 26°
August 6 Sunday 6 rain in 6 of 20 yrs 6/20 35° 26° August 7 Monday 7 rain in 8 of 20 yrs 8/20 35° 26° August 8 Tuesday 8 rain in 8 of 20 yrs 8/20 34° 26° August 9 Wednesday 9 rain in 10 of 20 yrs 10/20 34° 25° August 10 Thursday 10 rain in 6 of 20 yrs 6/20 34° 26° August 11 Friday 11 rain in 7 of 20 yrs 7/20 34° 25° August 12 Saturday 12 rain in 8 of 20 yrs 8/20 34° 26° 6-12 rain on 38% of days 34° 26°
August 13 Sunday 13 rain in 8 of 20 yrs 8/20 34° 26° August 14 Monday 14 rain in 7 of 20 yrs 7/20 34° 25° August 15 Tuesday 15 rain in 9 of 20 yrs 9/20 33° 25° August 16 Wednesday 16 rain in 12 of 20 yrs 12/20 34° 25° August 17 Thursday 17 rain in 10 of 20 yrs 10/20 33° 25° August 18 Friday 18 rain in 8 of 20 yrs 8/20 34° 25° August 19 Saturday 19 rain in 11 of 20 yrs 11/20 33° 25° 13-19 rain on 46% of days 34° 25°
August 20 Sunday 20 rain in 7 of 20 yrs 7/20 34° 25° August 21 Monday 21 rain in 8 of 20 yrs 8/20 34° 25° August 22 Tuesday 22 rain in 9 of 20 yrs 9/20 34° 25° August 23 Wednesday 23 rain in 9 of 20 yrs 9/20 33° 25° August 24 Thursday 24 rain in 10 of 20 yrs 10/20 33° 25° August 25 Friday 25 rain in 12 of 20 yrs 12/20 33° 25° August 26 Saturday 26 rain in 9 of 20 yrs 9/20 33° 24° 20-26 rain on 46% of days 33° 25°
August 27 Sunday 27 rain in 6 of 20 yrs 6/20 33° 24° August 28 Monday 28 rain in 7 of 20 yrs 7/20 33° 24° August 29 Tuesday 29 rain in 9 of 20 yrs 9/20 33° 24° August 30 Wednesday 30 rain in 11 of 20 yrs 11/20 32° 24° August 31 Thursday 31 rain in 9 of 20 yrs 9/20 32° 24°
27-31 rain on 42% of days 33° 24°
1-5 rain on 25% of days 35° 26° 6-12 rain on 38% of days 34° 26° 13-19 rain on 46% of days 34° 25° 20-26 rain on 46% of days 33° 25° 27-31 rain on 42% of days 33° 24°
Tap another date to change
2006 11mm
2007 none
2008 9mm
2009 none
2010 none
2011 15mm
2012 none
2013 none
2014 7mm
2015 24mm
2016 none
2017 11mm
2018 1mm
2019 4mm
2020 none
2021 145mm
2022 15mm
2023 4mm
2024 none
2025 2mm
Holidays in August (2027) August 11 Mountain DayAugust 13 to August 16 Obon 1 Local public holiday or break (busier, pricier)
Holidays in August (2028)
Day by day temperature i 23° 29° 34° 40° 1 8 15 22 29 31
Your trip dates, the past 20 years Trip dates August 1 (Sun) 2 (Mon) 3 (Tue) 4 (Wed) 5 (Thu) 6 (Fri) 7 (Sat) 8 (Sun) 9 (Mon) 10 (Tue) 11 (Wed) 12 (Thu) 13 (Fri) 14 (Sat) 15 (Sun) 16 (Mon) 17 (Tue) 18 (Wed) 19 (Thu) 20 (Fri) 21 (Sat) 22 (Sun) 23 (Mon) 24 (Tue) 25 (Wed) 26 (Thu) 27 (Fri) 28 (Sat) 29 (Sun) 30 (Mon) 31 (Tue) ~ August 1 (Sun) 2 (Mon) 3 (Tue) 4 (Wed) 5 (Thu) 6 (Fri) 7 (Sat) 8 (Sun) 9 (Mon) 10 (Tue) 11 (Wed) 12 (Thu) 13 (Fri) 14 (Sat) 15 (Sun) 16 (Mon) 17 (Tue) 18 (Wed) 19 (Thu) 20 (Fri) 21 (Sat) 22 (Sun) 23 (Mon) 24 (Tue) 25 (Wed) 26 (Thu) 27 (Fri) 28 (Sat) 29 (Sun) 30 (Mon) 31 (Tue) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Trip rain days Month rain days 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 Dates outside your trip are dimmed.
One row per year, one cell per day. 2016 had 5 rain days, 2014 had 21.
Kumamoto through the year What to pack Loose linen or quick-dry cotton, a wide-brimmed hat and sunscreen were the basics. A water bottle stayed in the bag, and midday plans moved indoors.
Averaging 12 rain days, keep a light waterproof or a compact umbrella in the bag. In windy spots umbrellas flip easily.
Common questions Does it rain a lot in Kumamoto in August? Over the past 20 years August averaged 12 rain days (1 mm or more) out of 31. Individual years ran from 5 in the driest to 21 in the wettest.
What should I wear in Kumamoto in August? Days averaged 34°C and nights 25°C. Pack an umbrella, sandals that can get wet, T-shirts, sunscreen plus a hat, and insect repellent.
Is August a good time to visit Kumamoto? On warmth and rain days alone, Kumamoto's easiest month was October. August ranked 12 of 12.
Is Kumamoto humid in August? Mean relative humidity was 78%, with about 30 muggy days (dew point of 20°C or more) in the month.
Previous month Kumamoto in July Next month Kumamoto in September Whole year Kumamoto weather by month Where to go August By country Japan: all cities this month