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: Drizzle

Pressure: 1,014 hPa

Feel like: 24 °C

Temperature: 21°C

Cloud: 73%

Humidity: 94%

Wind: N - 3 km/h

Visibility: 21.16 km

Weather forecast

Sun
25 Oct
19°C / 24°C
Moderate Rain
Mon
26 Oct
13°C / 22°C
Overcast
Tue
27 Oct
9°C / 19°C
Mainly Clear
Wed
28 Oct
9°C / 17°C
Drizzle
Thu
29 Oct
13°C / 20°C
Drizzle
Hourly forecast today:
10:00 AM
20° / 21°
20° / 21°
Drizzle
94% 7 km/h
11:00 AM
20° / 21°
20° / 21°
Drizzle
94% 6 km/h
12:00 PM
20° / 21°
20° / 21°
Partly Cloudy
93% 8 km/h
13:00 PM
20° / 21°
20° / 21°
Partly Cloudy
92% 14 km/h
14:00 PM
20° / 21°
20° / 21°
Partly Cloudy
91% 15 km/h
15:00 PM
20° / 21°
20° / 21°
Mainly Clear
91% 18 km/h
16:00 PM
20° / 21°
20° / 21°
Drizzle
91% 23 km/h
17:00 PM
20° / 21°
20° / 21°
Slight Rain
94% 28 km/h
18:00 PM
20° / 21°
20° / 21°
Slight Rain
94% 28 km/h
19:00 PM
20° / 21°
20° / 21°
Slight Rain
96% 24 km/h
20:00 PM
20° / 21°
20° / 21°
Slight Rain
95% 28 km/h

30 Day Averages and Extremes

  • Average high 20.77°C
  • Average low 13.3°C
  • Hottest day 27°C (10 October 2026)
  • Coldest day 0°C (07 November 2026)
  • Average humidity 73.33%
  • Days with precipitation 24 days
  • Highest precipitation 79 mm (24 October 2026)

Yesterday's Data

  • Max: 21°C
  • Min: 16°C
  • Total Precipitation: 25 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 warm weather in Hiroshima, with temperatures between 19ºC to 22ºC (66.2ºF to 71.6ºF), you might consider wearing:
- Comfortable sandals or sneakers
- Shorts or lightweight trousers
- Sunglasses
- T-shirt or short-sleeve blouse

Temperature

Early
19°C / 20°C
Morning
20°C / 21°C
Afternoon
20°C / 21°C
Evening
20°C / 21°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 455
  • CO 268
  • NH3 0
  • NO2 4
  • O3 52
  • PM10 6
  • PM25 4
  • SO2 1
  • CH4 1,444

Sunrise / Sunset

21:23
08:24