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:
-1°C
30.2°F
°C °F

Condition: Clear Sky

Pressure: 1,021 hPa

Feel like: -4 °C

Temperature: -1°C

Cloud: 4%

Humidity: 78%

Wind: NNW - 5 km/h

Visibility: 24.14 km

Weather forecast

Tue
17 Feb
0°C / 10°C
Overcast
Wed
18 Feb
-2°C / 9°C
Mainly Clear
Thu
19 Feb
5°C / 14°C
Mainly Clear
Fri
20 Feb
7°C / 10°C
Fog
Sat
21 Feb
7°C / 13°C
Overcast
Hourly forecast today:
20:00 PM
-4° / -1°
-4° / -1°
Clear Sky
78% 12 km/h
21:00 PM
-4° / -1°
-4° / -1°
Clear Sky
78% 12 km/h
22:00 PM
-4° / 0°
-4° / 0°
Clear Sky
75% 13 km/h
23:00 PM
-4° / 0°
-4° / 0°
Clear Sky
69% 13 km/h
00:00 AM
-4° / 2°
-4° / 2°
Clear Sky
63% 13 km/h
01:00 AM
-3° / 4°
-3° / 4°
Clear Sky
57% 13 km/h
02:00 AM
-3° / 6°
-3° / 6°
Clear Sky
50% 12 km/h
03:00 AM
-3° / 8°
-3° / 8°
Clear Sky
44% 12 km/h
04:00 AM
-4° / 9°
-4° / 9°
Mainly Clear
38% 13 km/h
05:00 AM
-4° / 10°
-4° / 10°
Mainly Clear
33% 14 km/h
06:00 AM
-5° / 10°
-5° / 10°
Mainly Clear
32% 16 km/h

30 Day Averages and Extremes

  • Average high 9.23°C
  • Average low 2.23°C
  • Hottest day 16°C (14 February 2026)
  • Coldest day -2°C (07 February 2026)
  • Average humidity 70.1%
  • Days with precipitation 18 days
  • Highest precipitation 42 mm (09 February 2026)

Yesterday's Data

  • Max: 11°C
  • Min: 4°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 cool weather in Hiroshima, with temperatures between 7ºC to 10ºC (44.6ºF to 50.0ºF), you should consider wearing:
- Knit hat (optional for cooler mornings)
- Thin gloves (optional for early mornings or late evenings)
- Light jacket or cardigan
- Cotton socks

Temperature

Early
6°C / 11°C
Morning
4°C / 8°C
Afternoon
1°C / 3°C
Evening
-4°C / -1°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 0
  • CO 0
  • NH3 0
  • NO2 0
  • O3 0
  • PM10 0
  • PM25 0
  • SO2 0
  • CH4 0

Sunrise / Sunset

21:53
08:54