January 10° · ☂ 5 February 11° · ☂ 7 March 15° · ☂ 9 April 20° · ☂ 9 ★ May24° · ☂ 8 June 27° · ☂ 11 July 31° · ☂ 11 August 33° · ☂ 8 September 30° · ☂ 9 ★ October24° · ☂ 7 November 18° · ☂ 6 December 12° · ☂ 7 Hiroshima in July:very hot, Hiroshima, Japan · Records from 2006 to 2025. Not a forecast.
Mean high 31° Hottest day 37.4° (2018)
Mean low 24° Coldest night 17.5° (2008)
Rain days 11 days 3-18 by year
Rainfall 293mm Daylight 14.4 → 13.9 h
Hiroshima's 12 months i Best: May and October
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Sightseeing on foot Poorhot, muggy and storm risk
Humidity 79% 30 muggy days
Clear days 3 days 16 overcast days
Mean wind 7 km/h Rarely windy
Sunrise / sunset (15th) 05:09 / 19:23 Daylight 14.4 → 13.9 h
Hiroshima in July The wettest month of the year, with some days of sudden heavy rain. Once the rains end in mid July the heat arrives at once. Ferries to Miyajima can be disrupted by weather, so leave slack.
Hiroshima in July ran hot: 31°C by day and 24°C at night. By midday the shade was the best seat in town. Rain fell on 11 days of the month on average. Averages hide a lot here: one year saw 3, another 18.
With 20 days above 30°C on average, most of the month felt like high summer. July 2025 averaged 34.0°C by day, 2.7°C above the 20-year mean. Rain days averaged 27 mm each, so when it rained it rained properly.
Typhoons i 6 of the last 20 years had a tropical storm pass within 300 km this month.
Jongdari (2018), 6 km away tropical storm Nangka (2015), 105 km away typhoon strength Nanmadol (2017), 134 km away tropical storm 1 2 3 4 1 5 1 6 6 7 11 8 11 9 3 10 11 12
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
July 1 Thursday 1 rain in 9 of 20 yrs 9/20 29° 23° July 2 Friday 2 rain in 6 of 20 yrs 6/20 30° 23° July 3 Saturday 3 rain in 13 of 20 yrs 13/20 29° 23° 1-3 rain on 47% of days 29° 23°
July 4 Sunday 4 rain in 10 of 20 yrs 10/20 30° 23° July 5 Monday 5 rain in 9 of 20 yrs 9/20 30° 23° July 6 Tuesday 6 rain in 8 of 20 yrs 8/20 30° 23° July 7 Wednesday 7 rain in 11 of 20 yrs 11/20 30° 23° July 8 Thursday 8 rain in 10 of 20 yrs 10/20 30° 24° July 9 Friday 9 rain in 10 of 20 yrs 10/20 31° 24° July 10 Saturday 10 rain in 8 of 20 yrs 8/20 31° 24° 4-10 rain on 47% of days 30° 23°
July 11 Sunday 11 rain in 7 of 20 yrs 7/20 31° 24° July 12 Monday 12 rain in 8 of 20 yrs 8/20 31° 24° July 13 Tuesday 13 rain in 10 of 20 yrs 10/20 30° 24° July 14 Wednesday 14 rain in 9 of 20 yrs 9/20 30° 24° July 15 Thursday 15 rain in 6 of 20 yrs 6/20 31° 24° July 16 Friday 16 rain in 5 of 20 yrs 5/20 31° 24° July 17 Saturday 17 rain in 8 of 20 yrs 8/20 31° 24° 11-17 rain on 38% of days 31° 24°
July 18 Sunday 18 rain in 7 of 20 yrs 7/20 31° 24° July 19 Monday 19 rain in 9 of 20 yrs 9/20 31° 25° July 20 Tuesday 20 rain in 8 of 20 yrs 8/20 32° 25° July 21 Wednesday 21 rain in 6 of 20 yrs 6/20 32° 25° July 22 Thursday 22 rain in 4 of 20 yrs 4/20 32° 25° July 23 Friday 23 rain in 3 of 20 yrs 3/20 33° 25° July 24 Saturday 24 rain in 5 of 20 yrs 5/20 33° 25° 18-24 rain on 30% of days 32° 25°
July 25 Sunday 25 rain in 7 of 20 yrs 7/20 33° 25° July 26 Monday 26 rain in 3 of 20 yrs 3/20 33° 25° July 27 Tuesday 27 rain in 5 of 20 yrs 5/20 33° 25° July 28 Wednesday 28 rain in 6 of 20 yrs 6/20 33° 25° July 29 Thursday 29 rain in 5 of 20 yrs 5/20 33° 25° July 30 Friday 30 rain in 2 of 20 yrs 2/20 34° 25° July 31 Saturday 31 rain in 2 of 20 yrs 2/20 34° 25° 25-31 rain on 21% of days 33° 25°
1-3 rain on 47% of days 29° 23° 4-10 rain on 47% of days 30° 23° 11-17 rain on 38% of days 31° 24° 18-24 rain on 30% of days 32° 25° 25-31 rain on 21% of days 33° 25°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
July 1 Saturday 1 rain in 9 of 20 yrs 9/20 29° 23° July 1 rain on 45% of days 29° 23°
July 2 Sunday 2 rain in 6 of 20 yrs 6/20 30° 23° July 3 Monday 3 rain in 13 of 20 yrs 13/20 29° 23° July 4 Tuesday 4 rain in 10 of 20 yrs 10/20 30° 23° July 5 Wednesday 5 rain in 9 of 20 yrs 9/20 30° 23° July 6 Thursday 6 rain in 8 of 20 yrs 8/20 30° 23° July 7 Friday 7 rain in 11 of 20 yrs 11/20 30° 23° July 8 Saturday 8 rain in 10 of 20 yrs 10/20 30° 24° 2-8 rain on 48% of days 30° 23°
July 9 Sunday 9 rain in 10 of 20 yrs 10/20 31° 24° July 10 Monday 10 rain in 8 of 20 yrs 8/20 31° 24° July 11 Tuesday 11 rain in 7 of 20 yrs 7/20 31° 24° July 12 Wednesday 12 rain in 8 of 20 yrs 8/20 31° 24° July 13 Thursday 13 rain in 10 of 20 yrs 10/20 30° 24° July 14 Friday 14 rain in 9 of 20 yrs 9/20 30° 24° July 15 Saturday 15 rain in 6 of 20 yrs 6/20 31° 24° 9-15 rain on 41% of days 31° 24°
July 16 Sunday 16 rain in 5 of 20 yrs 5/20 31° 24° July 17 Monday 17 rain in 8 of 20 yrs 8/20 31° 24° July 18 Tuesday 18 rain in 7 of 20 yrs 7/20 31° 24° July 19 Wednesday 19 rain in 9 of 20 yrs 9/20 31° 25° July 20 Thursday 20 rain in 8 of 20 yrs 8/20 32° 25° July 21 Friday 21 rain in 6 of 20 yrs 6/20 32° 25° July 22 Saturday 22 rain in 4 of 20 yrs 4/20 32° 25° 16-22 rain on 34% of days 32° 24°
July 23 Sunday 23 rain in 3 of 20 yrs 3/20 33° 25° July 24 Monday 24 rain in 5 of 20 yrs 5/20 33° 25° July 25 Tuesday 25 rain in 7 of 20 yrs 7/20 33° 25° July 26 Wednesday 26 rain in 3 of 20 yrs 3/20 33° 25° July 27 Thursday 27 rain in 5 of 20 yrs 5/20 33° 25° July 28 Friday 28 rain in 6 of 20 yrs 6/20 33° 25° July 29 Saturday 29 rain in 5 of 20 yrs 5/20 33° 25° 23-29 rain on 24% of days 33° 25°
July 30 Sunday 30 rain in 2 of 20 yrs 2/20 34° 25° July 31 Monday 31 rain in 2 of 20 yrs 2/20 34° 25°
30-31 rain on 10% of days 34° 25°
July 1 rain on 45% of days 29° 23° 2-8 rain on 48% of days 30° 23° 9-15 rain on 41% of days 31° 24° 16-22 rain on 34% of days 32° 24° 23-29 rain on 24% of days 33° 25° 30-31 rain on 10% of days 34° 25°
Tap another date to change
2006 1mm
2007 none
2008 5mm
2009 none
2010 26mm
2011 8mm
2012 119mm
2013 35mm
2014 78mm
2015 none
2016 12mm
2017 none
2018 37mm
2019 5mm
2020 21mm
2021 5mm
2022 6mm
2023 none
2024 none
2025 none
Holidays in July (2027) July 19 Marine DayJuly 3 to July 5 Independence Day weekend 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Day by day temperature i 22° 28° 33° 39° 1 8 15 22 29 31
Your trip dates, the past 20 years Trip dates July 1 (Thu) 2 (Fri) 3 (Sat) 4 (Sun) 5 (Mon) 6 (Tue) 7 (Wed) 8 (Thu) 9 (Fri) 10 (Sat) 11 (Sun) 12 (Mon) 13 (Tue) 14 (Wed) 15 (Thu) 16 (Fri) 17 (Sat) 18 (Sun) 19 (Mon) 20 (Tue) 21 (Wed) 22 (Thu) 23 (Fri) 24 (Sat) 25 (Sun) 26 (Mon) 27 (Tue) 28 (Wed) 29 (Thu) 30 (Fri) 31 (Sat) ~ July 1 (Thu) 2 (Fri) 3 (Sat) 4 (Sun) 5 (Mon) 6 (Tue) 7 (Wed) 8 (Thu) 9 (Fri) 10 (Sat) 11 (Sun) 12 (Mon) 13 (Tue) 14 (Wed) 15 (Thu) 16 (Fri) 17 (Sat) 18 (Sun) 19 (Mon) 20 (Tue) 21 (Wed) 22 (Thu) 23 (Fri) 24 (Sat) 25 (Sun) 26 (Mon) 27 (Tue) 28 (Wed) 29 (Thu) 30 (Fri) 31 (Sat) 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. 2025 had 3 rain days, 2020 had 18.
Hiroshima through the year What to pack At 31°C by day and 24°C at night with humid air, sweat hardly dried. Quick-dry fabrics beat heavy cotton, and a spare top saved the evening.
Averaging 11 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 Hiroshima in July? Over the past 20 years July averaged 11 rain days (1 mm or more) out of 31. Individual years ran from 3 in the driest to 18 in the wettest.
What should I wear in Hiroshima in July? Days averaged 31°C and nights 24°C. Pack a compact umbrella, T-shirts, sunscreen plus a hat, and insect repellent.
Is July a good time to visit Hiroshima? On warmth and rain days alone, Hiroshima's easiest months were May and October. July ranked 8 of 12.
Is Hiroshima humid in July? Mean relative humidity was 79%, with about 30 muggy days (dew point of 20°C or more) in the month.
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