Hiroshima in June: weather, what to wear and events

Hiroshima weather in June

Averages for 1991–2020 at the JMA's Hiroshima station (4 m above sea level).

High: 27.2°C (81°F)
Low: 19.8°C (68°F)
Precipitation: 226.5 mm
Wet days: 10.7 days
Sunshine: 155 hours

Highs rise 2.8°C from May and climb another 3.7°C into July.

That is 6.1°C above Hiroshima's yearly average high of 21.1°C.

Of our 14 places with temperature records, Hiroshima is the 7th warmest in June: level with Fukuoka and 1.1°C warmer than Tokyo.

June is Hiroshima's 2nd wettest month (226.5 mm).

Of our 15 places, Hiroshima has the 4th highest precipitation in June: 23.1 mm less than Fukuoka and 1.5 mm more than Nikko.

Rain of 1 mm or more falls on 10.7 days, and 10 mm or more on 6.0 days.

Rain of 30 mm or more in one day falls on 2.6 days, and 50 mm or more on 1.2 days.

4.0 days reach 30°C or more.

On 0.5 nights the low stays at 25°C or above.

The sun is out for 40% or more of the possible hours on 13.4 days, and 6.0 days have under 0.1 hours of sunshine.

By the JMA's cloud records, 0.8 days are clear and 17.0 are overcast.

On 15 June 2027 the sun rises at 4:57 and sets at 19:24 in Hiroshima, giving 14 hours 27 minutes of daylight (NAOJ).

Average temperature: 23.2°C (74°F)
Humidity: 71%
Days of 25°C or more: 24.3 days

Early, mid and late June

Hiroshima in June by ten-day period: averages for 1991–2020 (JMA)
Days	High	Low	Precipitation
1–10 June	26.6°C	18.1°C	42.2 mm
11–20 June	27.3°C	19.8°C	78.2 mm
21–30 June	27.7°C	21.3°C	106.1 mm

By the last ten days of June the average high in Hiroshima is 1.1°C higher than in the first ten.

By ten-day totals, 21–30 June is the wettest (106.1 mm) and 1–10 June the driest (42.2 mm).

What to wear in Hiroshima in June

Warm: highs around 27.2°C

Short sleeves or thin long sleeves, with a light layer for air-conditioning and evenings.
An umbrella: rain falls on 10.7 days.

Pack

Umbrella
A light layer for air-conditioning

Our clothing rules

Flowers and autumn colour in Hiroshima in June

Hydrangea

The JMA's sample hydrangea in Hiroshima flowers around 10 June in an average year (1991–2020). In 2026: 3 June.

Dates are for one sample tree at or near the JMA observatory, not for every park in the city.

Rainy season and typhoons

In an average year (1991–2020) the JMA says the rainy season in Chugoku starts around 6 June and ends around 19 July. In 2026 it started around 4 June and ended around 8 July.

In an average June, 0.2 typhoons come within 300 km of the Chugoku region; across Japan, 0.8 come within 300 km and 0.2 make landfall (JMA, 1991–2020).

June records in Hiroshima

The extremes the JMA has measured in June at its Hiroshima station.

Hottest June day: 34.4°C (94°F) on 28 June 1934 (records since 1879)
Coldest June night: 6.6°C (44°F) on 1 June 1893 (records since 1879)
Wettest June day: 187.2 mm on 20 June 1965 (records since 1879)

Holidays and crowds in June

There are no national holidays in June 2027.

In June 2025, hotels and inns across Hiroshima Prefecture were 59.5% full on average (10th busiest of 12 months). Foreign guests spent 145,830 nights there that month (Japan Tourism Agency). That compares with 67.5% in May and 63.0% in July.

What's on in Hiroshima in June

Events in Hiroshima in June: dates from each organizer's official page
Event	When	Where and what
Toukasan Grand Festival (Enryuji Temple)とうかさん大祭	The first Friday to Sunday of June (5 to 7 June in 2026; 4 to 6 June in 2027)	Enryuji Temple, Mikawa-cho, Naka Ward. A three-day festival at Enryuji Temple. The Inari deity (Toka Daimyojin) is opened to public view only during these three days, starting with an opening rite at 18:30 on the first day. The festival is known as a yukata festival, and the Hiroshima region starts wearing yukata at this time. The Yukata de Kin Festival, a city-wide event, is held in the same period around Chuo-dori and other central areas. Official page

Hiroshima before and after June

Hiroshima: May, June and July (JMA, 1991–2020)
Month	High	Low	Precipitation	Wet days
May	24.4°C (−2.8°C)	15.1°C (−4.7°C)	169.8 mm (−56.7 mm)	8.6 days (−2.1 days)
June	27.2°C	19.8°C	226.5 mm	10.7 days
July	30.9°C (+3.7°C)	24.1°C (+4.3°C)	279.8 mm (+53.3 mm)	10.6 days (−0.1 days)

Other places in June

June: Hiroshima against five other places (JMA, 1991–2020)
Place	High	Against Hiroshima	Wet days	Against Hiroshima
Tokyo	26.1°C	−1.1°C	11.6 days	+0.9 days
Kyoto	28.1°C	+0.9°C	11.5 days	+0.8 days
Osaka	28.0°C	+0.8°C	11.3 days	+0.6 days
Sapporo	21.8°C	−5.4°C	7.5 days	−3.2 days
OkinawaNaha	29.8°C	+2.6°C	11.3 days	+0.6 days

All 15 places in June

Frequently asked questions

What is the weather like in Hiroshima in June?

The average high is 27.2°C (81°F) and the average low 19.8°C (68°F). 226.5 mm of rain falls on about 10.7 days (JMA, 1991–2020).

What should I wear in Hiroshima in June?

Short sleeves or thin long sleeves, with a light layer for air-conditioning and evenings. An umbrella: rain falls on 10.7 days.

Is Hiroshima busy in June?

In June 2025, hotels and inns across Hiroshima Prefecture were 59.5% full on average (10th busiest of 12 months). Foreign guests spent 145,830 nights there that month (Japan Tourism Agency).

What are the record temperatures for June in Hiroshima?

The highest temperature the JMA has recorded in Hiroshima in June is 34.4°C (94°F), on 28 June 1934. The lowest is 6.6°C (44°F), on 1 June 1893.

What events are on in Hiroshima in June?

Toukasan Grand Festival (Enryuji Temple): The first Friday to Sunday of June (5 to 7 June in 2026; 4 to 6 June in 2027).

When do hydrangeas flower in Hiroshima?