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:
27°C
80.6°F
°C °F

Condition: Mainly Clear

Pressure: 1,006 hPa

Feel like: 33 °C

Temperature: 27°C

Cloud: 41%

Humidity: 89%

Wind: NNE - 2 km/h

Visibility: 16.3 km

Weather forecast

Wed
05 Aug
27°C / 36°C
Mainly Clear
Thu
06 Aug
27°C / 35°C
Moderate Drizzle
Fri
07 Aug
26°C / 34°C
Drizzle
Sat
08 Aug
24°C / 33°C
Drizzle
Sun
09 Aug
25°C / 30°C
Drizzle
Hourly forecast today:
17:00 PM
25° / 27°
25° / 27°
Mainly Clear
89% 7 km/h
18:00 PM
25° / 27°
25° / 27°
Mainly Clear
90% 5 km/h
19:00 PM
25° / 26°
25° / 26°
Mainly Clear
89% 6 km/h
20:00 PM
24° / 26°
24° / 26°
Mainly Clear
89% 10 km/h
21:00 PM
24° / 26°
24° / 26°
Mainly Clear
90% 10 km/h
22:00 PM
24° / 27°
24° / 27°
Mainly Clear
86% 14 km/h
23:00 PM
24° / 28°
24° / 28°
Mainly Clear
79% 16 km/h
00:00 AM
24° / 29°
24° / 29°
Mainly Clear
72% 21 km/h
01:00 AM
24° / 31°
24° / 31°
Clear Sky
64% 17 km/h
02:00 AM
24° / 33°
24° / 33°
Clear Sky
59% 16 km/h
03:00 AM
23° / 34°
23° / 34°
Clear Sky
55% 24 km/h

30 Day Averages and Extremes

  • Average high 32.93°C
  • Average low 24.97°C
  • Hottest day 36°C (05 August 2026)
  • Coldest day 23°C (30 July 2026)
  • Average humidity 73.23%
  • Days with precipitation 25 days
  • Highest precipitation 51 mm (03 August 2026)

Yesterday's Data

  • Max: 32°C
  • Min: 25°C
  • Total Precipitation: 0 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 34ºC (93.2ºF), consider wearing:
- Broad-brimmed sun hat
- High SPF sunscreen for outdoor activities
- Airy sandals or flip-flops
- UV-blocking sunglasses

Temperature

Early
26°C / 32°C
Morning
25°C / 30°C
Afternoon
25°C / 27°C
Evening
24°C / 26°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 477
  • CO 268
  • NH3 0
  • NO2 15
  • O3 51
  • PM10 13
  • PM25 12
  • SO2 5
  • CH4 1,713

Sunrise / Sunset

20:23
10:08