yearsofweather

Hiroshima in May:
warm, occasional rain

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

Mean high24°Hottest day 31.8° (2019)
Mean low15°Coldest night 5.2° (2025)
Rain days8 days4-12 by year
Rainfall168mmDaylight 13.6 → 14.3 h
Hiroshima's 12 months iBest: May and October
Trip types Sightseeing on foot Goodmild
Humidity67%1 muggy day
Clear days6 days12 overcast days
Mean wind8 km/hRarely windy
Sunrise / sunset (15th)05:08 / 19:05Daylight 13.6 → 14.3 h

Hiroshima in May

The Hiroshima Flower Festival runs May 3 to 5 around Peace Boulevard and Peace Memorial Park. It is reported to draw over a million people, so rooms and trams are packed.

Daytime highs averaged 24°C, with nights at 15°C. Comfortably warm without being punishing. Out of 31 days, about 8 brought rain; the rest stayed dry. The driest year, 2012, had 4 rain days; the wettest, 2011, had 12.

Rain days averaged 20 mm each, so when it rained it rained properly.

Typhoons i

1 of the last 20 years had a tropical storm pass within 300 km this month.

  • Songda (2011), 291 km away tropical storm
1 2 3 4 15 16 67 118 119 310 11 12

Date by date i

‹ April May 2027 June ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
May 1rain on 30% of days23° 13°
2-8rain on 20% of days23° 13°
9-15rain on 26% of days23° 14°
16-22rain on 26% of days25° 16°
23-29rain on 31% of days25° 17°
30-31rain on 30% of days25° 17°

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

May 1rain on 30% of days23° 13°
2-8rain on 20% of days23° 13°
9-15rain on 26% of days23° 14°
16-22rain on 26% of days25° 16°
23-29rain on 31% of days25° 17°
30-31rain on 30% of days25° 17°
Tap another date to change

200631mm
200730mm
2008none
2009none
20102mm
2011none
2012none
2013none
2014none
2015none
201623mm
20171mm
201828mm
20192mm
2020none
2021none
2022none
202373mm
202422mm
202516mm
Holidays in May (2027)
  • April 29 to May 5 Golden Week
  • May 3 Constitution Memorial Day
  • May 4 Greenery Day
  • May 5 Children's Day
  • May 31 Memorial Day

1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)

Day by day temperature i

11°18°26°33° 1815222931

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 11 d
2007
2 d 9 d
2008
1 d 10 d
2009
1 d 8 d
2010
2 d 10 d
2011
0 d 12 d
2012
1 d 4 d
2013
1 d 5 d
2014
0 d 5 d
2015
2 d 8 d
2016
2 d 8 d
2017
1 d 8 d
2018
4 d 8 d
2019
1 d 6 d
2020
1 d 9 d
2021
2 d 11 d
2022
0 d 5 d
2023
2 d 9 d
2024
1 d 8 d
2025
2 d 9 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
6
4
3
1
4
10
5
1
5
8
3
8
7
3
3
6
8
7
6
3
3
4
4
8
7
6
5
8
5
6
6
Rain days on trip
22112011022141120212

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

One row per year, one cell per day. 2012 had 4 rain days, 2011 had 12.

Hiroshima through the year

MonthHighLowRain daysRainfall
January 10°2°5 days46mm
February 11°2°7 days70mm
March 15°5°9 days127mm
April 20°10°9 days149mm
MayGood 24°15°8 days168mm
June 27°20°11 days229mm
July 31°24°11 days293mm
August 33°25°8 days177mm
September 30°22°9 days149mm
OctoberGood 24°15°7 days104mm
November 18°9°6 days73mm
December 12°4°7 days57mm

Common questions

Does it rain a lot in Hiroshima in May?

Over the past 20 years May averaged 8 rain days (1 mm or more) out of 31. Individual years ran from 4 in the driest to 12 in the wettest.

What should I wear in Hiroshima in May?

Days averaged 24°C and nights 15°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 Hiroshima?

On warmth and rain days alone, Hiroshima's easiest months were May and October. May ranked 2 of 12, close to the top.

How many clear days does Hiroshima get in May?

About 6 clear days (under 30% cloud on average) and 12 overcast days (80% or more).