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:
19°C
66.2°F
°C °F

Condition: Mainly Clear

Pressure: 1,014 hPa

Feel like: 19 °C

Temperature: 19°C

Cloud: 25%

Humidity: 70%

Wind: SSW - 1 km/h

Visibility: 24.64 km

Weather forecast

Tue
12 May
15°C / 25°C
Partly Cloudy
Wed
13 May
12°C / 24°C
Moderate Rain
Thu
14 May
12°C / 26°C
Clear Sky
Fri
15 May
12°C / 25°C
Clear Sky
Sat
16 May
13°C / 28°C
Clear Sky
Hourly forecast today:
11:00 AM
13° / 19°
13° / 19°
Mainly Clear
70% 12 km/h
12:00 PM
13° / 18°
13° / 18°
Mainly Clear
75% 9 km/h
13:00 PM
13° / 17°
13° / 17°
Clear Sky
76% 6 km/h
14:00 PM
13° / 17°
13° / 17°
Clear Sky
79% 9 km/h
15:00 PM
13° / 16°
13° / 16°
Clear Sky
81% 9 km/h
16:00 PM
12° / 16°
12° / 16°
Clear Sky
81% 6 km/h
17:00 PM
12° / 15°
12° / 15°
Mainly Clear
83% 5 km/h
18:00 PM
12° / 15°
12° / 15°
Clear Sky
83% 5 km/h
19:00 PM
11° / 14°
11° / 14°
Mainly Clear
83% 6 km/h
20:00 PM
11° / 14°
11° / 14°
Mainly Clear
83% 11 km/h
21:00 PM
11° / 14°
11° / 14°
Clear Sky
82% 14 km/h

30 Day Averages and Extremes

  • Average high 22.53°C
  • Average low 13.47°C
  • Hottest day 28°C (16 May 2026)
  • Coldest day 8°C (04 May 2026)
  • Average humidity 71.9%
  • Days with precipitation 21 days
  • Highest precipitation 94 mm (29 April 2026)

Yesterday's Data

  • Max: 23°C
  • Min: 12°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 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
- Sun hat or cap
- Sunscreen (if spending time outdoors)

Temperature

Early
14°C / 22°C
Morning
13°C / 21°C
Afternoon
13°C / 16°C
Evening
11°C / 14°C

Air quality

Moderate

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

  • CO2 458
  • CO 286
  • NH3 0
  • NO2 11
  • O3 100
  • PM10 11
  • PM25 8
  • SO2 3
  • CH4 1,479

Sunrise / Sunset

20:10
10:02