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:
22°C
71.6°F
°C °F

Condition: Slight Rain

Pressure: 1,005 hPa

Feel like: 27 °C

Temperature: 22°C

Cloud: 77%

Humidity: 97%

Wind: S - 4 km/h

Visibility: 2.84 km

Weather forecast

Sun
21 Jun
19°C / 25°C
Moderate Drizzle
Mon
22 Jun
17°C / 23°C
Overcast
Tue
23 Jun
19°C / 20°C
Slight Thunderstorm
Wed
24 Jun
20°C / 24°C
Moderate Drizzle
Thu
25 Jun
20°C / 21°C
Slight Thunderstorm
Hourly forecast today:
00:00 AM
22° / 22°
22° / 22°
Slight Rain
97% 22 km/h
01:00 AM
22° / 23°
22° / 23°
Slight Rain
98% 22 km/h
02:00 AM
23° / 23°
23° / 23°
Drizzle Dense Intensity
98% 25 km/h
03:00 AM
23° / 23°
23° / 23°
Drizzle
97% 34 km/h
04:00 AM
23° / 24°
23° / 24°
Drizzle
97% 43 km/h
05:00 AM
23° / 24°
23° / 24°
Drizzle
95% 46 km/h
06:00 AM
23° / 24°
23° / 24°
Drizzle
95% 45 km/h
07:00 AM
23° / 24°
23° / 24°
Drizzle
94% 42 km/h
08:00 AM
23° / 24°
23° / 24°
Drizzle
96% 50 km/h
09:00 AM
23° / 24°
23° / 24°
Drizzle
96% 46 km/h
10:00 AM
23° / 24°
23° / 24°
Drizzle
94% 46 km/h

30 Day Averages and Extremes

  • Average high 23.87°C
  • Average low 18.37°C
  • Hottest day 28°C (12 June 2026)
  • Coldest day 0°C (03 July 2026)
  • Average humidity 78.63%
  • Days with precipitation 25 days
  • Highest precipitation 97 mm (19 June 2026)

Yesterday's Data

  • Max: 24°C
  • Min: 22°C
  • Total Precipitation: 31 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 25ºC (77.0ºF), consider wearing:
- Lightweight t-shirt or tank top
- Thin, moisture-wicking socks
- Sunscreen for skin protection
- UV-protective sunglasses

Temperature

Early
23°C / 23°C
Morning
23°C / 24°C
Afternoon
21°C / 22°C
Evening
19°C / 21°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 452
  • CO 271
  • NH3 0
  • NO2 11
  • O3 33
  • PM10 3
  • PM25 2
  • SO2 3
  • CH4 1,402

Sunrise / Sunset

19:58
10:25