Weather in Hiroshima, in 5 minutes to understand

Hello, world !

This is shinta_in_japan.
Today’s topic is ‘Weather in Hiroshima city’.

In this article, I would like to introduce climate of Hiroshima simply, with itemized style. You might learn weather in Hiroshima with 5 minutes of reading.

Have fun !

Weather Conditions

Hiroshima is the largest city in ‘Seto-Uchi’ area, where is relatively warmer and good weather in Japan. Please kindly refer to the number of days in each weather conditions, in average, based on statistics of past 30 years by JMA, as of 2020.

• Sunny day (sunshine ratio more than 40%)
  • 214.7 days in a year

• Rainy day (Rain more than 1mm)
  • 94.5 days in a year

• Snowing day (Snow/Rain can be duplicated)
  • 23.3 days in a year (Nov-Mar)

• Snowfall Record
  • In a day : 27 cm (1956/2/12)
  • Total: 31 cm (1893/1/5)

• Rainy Season
  • Start : Around 6th. June
  • End : Around 21st. July

• Typhoon (approaching to 300 km)
  • 3.1 times in a year (Jun-Oct)

**JMA = Governmental office, Japan Meteorological Agency

Temperature

Hiroshima is basically warm, however in winter, cold windows coming from north. For your easy understanding, I would like to summarize temperature in Hiroshima city, based on statistics of JMA, as follows.

• High temperature
  • Above 30℃ : 63.1 days in a year (May-Oct)
  • Above 35℃ : 5.9 days in a year (Jul-Sep)

• Low temperature
  • Below 0℃ : 17.0 days in a year (Dec-Apr)

• Record (Day High)
  • + 38.7 ℃ (1994/7/17)
  • – 2.9 ℃ (1981/2/26)

• Record (Day Low)
  • + 29.5 ℃ (2016/8/17)
  • – 8.6 ℃ (1917/12/28)

• Monthly average
  • High : + 9.7 ℃ (Jan) / + 32.5 ℃ (Aug)
  • Low : + 1.7 ℃ (Jan) / + 24.8 ℃ (Aug)
  • Ave : + 5.2 ℃ (Jan) / + 28.2 ℃ (Aug)

Daytime activities

Hiroshima city is located at lat 34°23N at long 132E. To enjoy various activities outside in Hiroshima, length of daytime is very important factor. For the convenience of visitors, I would like to summarize it as follows:

• Summer Solstice
  • Sunrise : around 04:58
  • Sunset : around 19:26
  • Daytime : around 14h30min

• Winter Solstice
  • Sunrise : around 07:13
  • Sunset : around 17:04
  • Daytime : around 9h55min

• Spring Equinox
  • Sunrise : around 06:14
  • Sunset : around 18:22

• Autumn Equinox
  • Sunrise : around 05:58
  • Sunset : around 18:07

** Data by National Astronomical Observatory of Japan

Biological information

Hiroshima is a city with rich culture and beautiful scenery in each season. Following biological data is based on observation by JMA. Please refer it as benchmarks to find season in Hiroshima.

• Sakura (Winter >> Spring)
  • Opening
    • Average : 27th. March
    • Earliest : 19th. March (2004)
    • Latest : 13th. April (1984)
  • Full blossom
    • Average : 4th.April
    • Earliest : 27th. March (2002)
    • Latest : 17th. April (1965)

• Cicada shrills (Rainy season >> Summer)
  • First shrills of brown cicada
    • Average : 12th. July
    • Earliest : 28th. June (1998)
    • Latest : 28th. July (1980)

• Japanese silver grass (Summer >> Autumn)
  • Opening
    • Average : 19th. September
    • Earliest : 18th. August (1964)
    • Latest : 9th. October (2008)

• Ginkgo tree (Autumn >> Winter)
  • Fallen leaves
    • Average : 28th. November
    • Earliest : 18th. November (1995)
    • Latest : 12th. December (1987)

Postscript

That’s all today.
How was the content today ?

We can expect more than 200 of fine days in a year in Hiroshima statistically. It’s nice to walk around there. I hope this article could assist you to learn climate in Hiroshima.

In the end, thank you very much for your reading and see you again !