Hiroshima, Japan Weather

  1. Hiroshima, Japan Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Hiroshima over the next 12 hours
  7. Temperature and possibility of rain in Hiroshima in the coming days
  8. Rainfall in Hiroshima in the coming days
  9. Hiroshima Weather Summary
  10. Weather averages by month
  11. Hiroshima's weather
  12. Frequently asked questions
  13. Comments
Hiroshima, Weather
(Photo by Griffin Quinn on Unsplash)

Current conditions

Updated:
21°C
69.8°F
°C °F

Condition: Clear Sky

Pressure: 1,001 hPa

Feel like: 24 °C

Temperature: 21°C

Cloud: 14%

Humidity: 88%

Wind: SSW - 6 km/h

Visibility: 15.96 km

Weather forecast

Sun
21 Jun
21°C / 27°C
Overcast
Mon
22 Jun
17°C / 23°C
Overcast
Tue
23 Jun
19°C / 21°C
Moderate Rain Showers
Wed
24 Jun
19°C / 22°C
Thunderstorm With Slight
Thu
25 Jun
19°C / 26°C
Slight Thunderstorm
Hourly forecast today:
19:00 PM
19° / 21°
19° / 21°
Clear Sky
88% 32 km/h
20:00 PM
19° / 21°
19° / 21°
Mainly Clear
86% 27 km/h
21:00 PM
19° / 22°
19° / 22°
Partly Cloudy
85% 25 km/h
22:00 PM
19° / 22°
19° / 22°
Partly Cloudy
85% 22 km/h
23:00 PM
20° / 23°
20° / 23°
Partly Cloudy
85% 17 km/h
00:00 AM
20° / 23°
20° / 23°
Overcast
83% 21 km/h
01:00 AM
20° / 24°
20° / 24°
Partly Cloudy
78% 27 km/h
02:00 AM
19° / 25°
19° / 25°
Mainly Clear
67% 29 km/h
03:00 AM
19° / 26°
19° / 26°
Partly Cloudy
66% 27 km/h
04:00 AM
19° / 25°
19° / 25°
Partly Cloudy
67% 27 km/h
05:00 AM
19° / 25°
19° / 25°
Overcast
70% 32 km/h

30 Day Averages and Extremes

  • Average high 25.07°C
  • Average low 19.33°C
  • Hottest day 28°C (12 June 2026)
  • Coldest day 16°C (09 June 2026)
  • Average humidity 81.1%
  • Days with precipitation 24 days
  • Highest precipitation 94 mm (19 June 2026)

Yesterday's Data

  • Max: 23°C
  • Min: 22°C
  • Total Precipitation: 58 mm

Temperature and possibility of rain in Hiroshima over the next 12 hours

Temperature and possibility of rain in Hiroshima in the coming days

Rainfall in Hiroshima in the coming days

Hiroshima Climate Summary

Hiroshima features a Humid subtropical, no dry season (Köppen classification: Cfa), with an average annual temperature of 15.34ºC (59.61ºF), which is about 0.15% higher than the national average for Japan. Annually, the city experiences approximately 87.04 millimeters (3.43 inches) of rainfall, spread across 107.72 rainy days, accounting for 29.51% of the year.

Longitude 34.3852894
Latitude 132.4553055
Yearly high temperature 18.13ºC (64.63ºF)
Yearly low temperature 10.49ºC (50.88ºF)
Hottest month August 30.13ºC (86.23ºF)
Coldest month January 0.45ºC (32.81ºF)
Yearly precip 87.04mm (3.43in)
Days with rainfall 107.72 days (29.51%)
Driest month January (78.52%)
Wettest month July (84.79%)

Weather averages by month

Month High / Low (°C) Rain
January 6.65° / 0.45° 4.91 days
February 7.86° / 0.81° 6.82 days
March 11.71° / 3.42° 8.27 days
April 16.5° / 7.53° 9.0 days
May 21.95° / 12.36° 9.09 days
June 24.58° / 16.69° 13.82 days
July 28.21° / 21.06° 13.73 days
August 30.13° / 22.29° 11.45 days
September 25.92° / 18.21° 10.45 days
October 20.56° / 12.81° 7.09 days
November 14.86° / 7.7° 6.0 days
December 8.63° / 2.55° 7.09 days

Hiroshima's weather

Frequently asked questions

1. What is the hottest month in Hiroshima?

August has the highest average monthly temperature (daily mean of 30.13ºC) and January are the coolest (daily mean of 0.45ºC).

2. What should I wear in Hiroshima today?

For today's very hot weather in Hiroshima, with the high temperatures above 26ºC (78.8ºF), consider wearing:
- Lightweight t-shirt or tank top
- Loose and airy fabrics like linen or cotton
- Open-toed sandals or light sneakers
- Thin, moisture-wicking socks

Temperature

Early
22°C / 23°C
Morning
22°C / 23°C
Afternoon
22°C / 23°C
Evening
19°C / 22°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 457
  • CO 145
  • NH3 0
  • NO2 5
  • O3 101
  • PM10 5
  • PM25 4
  • SO2 3
  • CH4 1,425

Sunrise / Sunset

19:58
10:25