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 May:comfortably warm, Kumamoto, Japan · Records from 2006 to 2025. Not a forecast.
Mean high 26° Hottest day 31.9° (2019)
Mean low 16° Coldest night 7.9° (2021)
Rain days 10 days 5-18 by year
Rainfall 185mm Daylight 13.5 → 14.1 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 Goodmild
Humidity 73% 2 muggy days
Clear days 5 days 14 overcast days
Mean wind 8 km/h Rarely windy
Sunrise / sunset (15th) 05:18 / 19:08 Daylight 13.5 → 14.1 h
Kumamoto in May Once Golden Week ends the sun strengthens and early-summer days become common. With the rainy season close, skies can cloud over suddenly. Pack sunscreen and a slim umbrella together. A hat helps too.
May in Kumamoto was on the warm side, averaging 26°C by day and 16°C at night. Nights were about 10°C cooler than the afternoons. There were 10 rain days on average, roughly one day in three. Year to year it swung widely, from 5 rain days in 2013 to 18 in 2021.
About 1 day a month still climbed past 30°C, the ones where you looked for shade. Wet days did not mess around: about 19 mm each, the kind of rain that drives you into a doorway.
Typhoons i 1 of the last 20 years had a tropical storm pass within 300 km this month.
Songda (2011), 234 km away tropical storm 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
May 1 Saturday 1 rain in 9 of 20 yrs 9/20 24° 14° May 1 rain on 45% of days 24° 14°
May 2 Sunday 2 rain in 6 of 20 yrs 6/20 25° 13° May 3 Monday 3 rain in 3 of 20 yrs 3/20 24° 13° May 4 Tuesday 4 rain in 5 of 20 yrs 5/20 25° 14° May 5 Wednesday 5 rain in 7 of 20 yrs 7/20 26° 14° May 6 Thursday 6 rain in 11 of 20 yrs 11/20 25° 15° May 7 Friday 7 rain in 7 of 20 yrs 7/20 25° 15° May 8 Saturday 8 rain in 2 of 20 yrs 2/20 26° 14° 2-8 rain on 29% of days 25° 14°
May 9 Sunday 9 rain in 9 of 20 yrs 9/20 25° 15° May 10 Monday 10 rain in 9 of 20 yrs 9/20 25° 15° May 11 Tuesday 11 rain in 7 of 20 yrs 7/20 26° 15° May 12 Wednesday 12 rain in 8 of 20 yrs 8/20 25° 15° May 13 Thursday 13 rain in 8 of 20 yrs 8/20 25° 15° May 14 Friday 14 rain in 3 of 20 yrs 3/20 26° 15° May 15 Saturday 15 rain in 5 of 20 yrs 5/20 26° 15° 9-15 rain on 35% of days 26° 15°
May 16 Sunday 16 rain in 7 of 20 yrs 7/20 26° 16° May 17 Monday 17 rain in 6 of 20 yrs 6/20 27° 16° May 18 Tuesday 18 rain in 8 of 20 yrs 8/20 27° 16° May 19 Wednesday 19 rain in 9 of 20 yrs 9/20 26° 17° May 20 Thursday 20 rain in 5 of 20 yrs 5/20 27° 16° May 21 Friday 21 rain in 5 of 20 yrs 5/20 27° 16° May 22 Saturday 22 rain in 2 of 20 yrs 2/20 27° 17° 16-22 rain on 30% of days 27° 16°
May 23 Sunday 23 rain in 5 of 20 yrs 5/20 27° 17° May 24 Monday 24 rain in 6 of 20 yrs 6/20 27° 17° May 25 Tuesday 25 rain in 3 of 20 yrs 3/20 27° 17° May 26 Wednesday 26 rain in 8 of 20 yrs 8/20 27° 17° May 27 Thursday 27 rain in 7 of 20 yrs 7/20 27° 17° May 28 Friday 28 rain in 8 of 20 yrs 8/20 27° 17° May 29 Saturday 29 rain in 4 of 20 yrs 4/20 28° 18° 23-29 rain on 29% of days 27° 17°
May 30 Sunday 30 rain in 5 of 20 yrs 5/20 28° 18° May 31 Monday 31 rain in 7 of 20 yrs 7/20 27° 17°
30-31 rain on 30% of days 27° 17°
May 1 rain on 45% of days 24° 14° 2-8 rain on 29% of days 25° 14° 9-15 rain on 35% of days 26° 15° 16-22 rain on 30% of days 27° 16° 23-29 rain on 29% of days 27° 17° 30-31 rain on 30% of days 27° 17°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
May 1 Monday 1 rain in 9 of 20 yrs 9/20 24° 14° May 2 Tuesday 2 rain in 6 of 20 yrs 6/20 25° 13° May 3 Wednesday 3 rain in 3 of 20 yrs 3/20 24° 13° May 4 Thursday 4 rain in 5 of 20 yrs 5/20 25° 14° May 5 Friday 5 rain in 7 of 20 yrs 7/20 26° 14° May 6 Saturday 6 rain in 11 of 20 yrs 11/20 25° 15° 1-6 rain on 34% of days 25° 14°
May 7 Sunday 7 rain in 7 of 20 yrs 7/20 25° 15° May 8 Monday 8 rain in 2 of 20 yrs 2/20 26° 14° May 9 Tuesday 9 rain in 9 of 20 yrs 9/20 25° 15° May 10 Wednesday 10 rain in 9 of 20 yrs 9/20 25° 15° May 11 Thursday 11 rain in 7 of 20 yrs 7/20 26° 15° May 12 Friday 12 rain in 8 of 20 yrs 8/20 25° 15° May 13 Saturday 13 rain in 8 of 20 yrs 8/20 25° 15° 7-13 rain on 36% of days 25° 15°
May 14 Sunday 14 rain in 3 of 20 yrs 3/20 26° 15° May 15 Monday 15 rain in 5 of 20 yrs 5/20 26° 15° May 16 Tuesday 16 rain in 7 of 20 yrs 7/20 26° 16° May 17 Wednesday 17 rain in 6 of 20 yrs 6/20 27° 16° May 18 Thursday 18 rain in 8 of 20 yrs 8/20 27° 16° May 19 Friday 19 rain in 9 of 20 yrs 9/20 26° 17° May 20 Saturday 20 rain in 5 of 20 yrs 5/20 27° 16° 14-20 rain on 31% of days 26° 16°
May 21 Sunday 21 rain in 5 of 20 yrs 5/20 27° 16° May 22 Monday 22 rain in 2 of 20 yrs 2/20 27° 17° May 23 Tuesday 23 rain in 5 of 20 yrs 5/20 27° 17° May 24 Wednesday 24 rain in 6 of 20 yrs 6/20 27° 17° May 25 Thursday 25 rain in 3 of 20 yrs 3/20 27° 17° May 26 Friday 26 rain in 8 of 20 yrs 8/20 27° 17° May 27 Saturday 27 rain in 7 of 20 yrs 7/20 27° 17° 21-27 rain on 26% of days 27° 17°
May 28 Sunday 28 rain in 8 of 20 yrs 8/20 27° 17° May 29 Monday 29 rain in 4 of 20 yrs 4/20 28° 18° May 30 Tuesday 30 rain in 5 of 20 yrs 5/20 28° 18° May 31 Wednesday 31 rain in 7 of 20 yrs 7/20 27° 17°
28-31 rain on 30% of days 27° 17°
1-6 rain on 34% of days 25° 14° 7-13 rain on 36% of days 25° 15° 14-20 rain on 31% of days 26° 16° 21-27 rain on 26% of days 27° 17° 28-31 rain on 30% of days 27° 17°
Tap another date to change
2006 20mm
2007 15mm
2008 none
2009 none
2010 2mm
2011 none
2012 none
2013 none
2014 none
2015 1mm
2016 71mm
2017 2mm
2018 15mm
2019 none
2020 none
2021 none
2022 8mm
2023 66mm
2024 20mm
2025 13mm
Holidays in May (2027) April 29 to May 5 Golden WeekMay 3 Constitution Memorial DayMay 4 Greenery DayMay 5 Children's DayMay 31 Memorial Day 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Day by day temperature i 12° 19° 26° 33° 1 8 15 22 29 31
Your trip dates, the past 20 years Trip dates May 1 (Sat) 2 (Sun) 3 (Mon) 4 (Tue) 5 (Wed) 6 (Thu) 7 (Fri) 8 (Sat) 9 (Sun) 10 (Mon) 11 (Tue) 12 (Wed) 13 (Thu) 14 (Fri) 15 (Sat) 16 (Sun) 17 (Mon) 18 (Tue) 19 (Wed) 20 (Thu) 21 (Fri) 22 (Sat) 23 (Sun) 24 (Mon) 25 (Tue) 26 (Wed) 27 (Thu) 28 (Fri) 29 (Sat) 30 (Sun) 31 (Mon) ~ May 1 (Sat) 2 (Sun) 3 (Mon) 4 (Tue) 5 (Wed) 6 (Thu) 7 (Fri) 8 (Sat) 9 (Sun) 10 (Mon) 11 (Tue) 12 (Wed) 13 (Thu) 14 (Fri) 15 (Sat) 16 (Sun) 17 (Mon) 18 (Tue) 19 (Wed) 20 (Thu) 21 (Fri) 22 (Sat) 23 (Sun) 24 (Mon) 25 (Tue) 26 (Wed) 27 (Thu) 28 (Fri) 29 (Sat) 30 (Sun) 31 (Mon) 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. 2013 had 5 rain days, 2021 had 18.
Kumamoto through the year What to pack With highs of 26°C, breathable clothes work best. Nights at 16°C need only a thin top layer. With a 10°C swing between day and night, dress in layers you can peel off at two in the afternoon and put back on at dusk.
Averaging 10 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 May? Over the past 20 years May averaged 10 rain days (1 mm or more) out of 31. Individual years ran from 5 in the driest to 18 in the wettest.
What should I wear in Kumamoto in May? Days averaged 26°C and nights 16°C. Pack a compact umbrella, a light layer for the evenings, T-shirts, and sunscreen plus a hat.
Is May a good time to visit Kumamoto? On warmth and rain days alone, Kumamoto's easiest month was October. May ranked 2 of 12, close to the top.
How many clear days does Kumamoto get in May? About 5 clear days (under 30% cloud on average) and 14 overcast days (80% or more).
Previous month Kumamoto in April Next month Kumamoto in June Whole year Kumamoto weather by month Where to go May By country Japan: all cities this month