Hiroshima weather by month

Check out Hiroshima weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Hiroshima (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
8°C maximum daytime temperature in January in Hiroshima8
9°C maximum daytime temperature in February in Hiroshima9
12°C maximum daytime temperature in March in Hiroshima12
18°C maximum daytime temperature in April in Hiroshima18
22°C maximum daytime temperature in May in Hiroshima22
25°C maximum daytime temperature in June in Hiroshima25
29°C maximum daytime temperature in July in Hiroshima29
31°C maximum daytime temperature in August in Hiroshima31
27°C maximum daytime temperature in September in Hiroshima27
22°C maximum daytime temperature in October in Hiroshima22
16°C maximum daytime temperature in November in Hiroshima16
11°C maximum daytime temperature in December in Hiroshima11
Min temperature (night-time)
0°C minimum night-time temperature in January in Hiroshima0
1°C minimum night-time temperature in February in Hiroshima1
3°C minimum night-time temperature in March in Hiroshima3
9°C minimum night-time temperature in April in Hiroshima9
13°C minimum night-time temperature in May in Hiroshima13
18°C minimum night-time temperature in June in Hiroshima18
22°C minimum night-time temperature in July in Hiroshima22
23°C minimum night-time temperature in August in Hiroshima23
19°C minimum night-time temperature in September in Hiroshima19
13°C minimum night-time temperature in October in Hiroshima13
7°C minimum night-time temperature in November in Hiroshima7
2°C minimum night-time temperature in December in Hiroshima2
Heat & Humidity
No heat & humidity in January in Hiroshima0
No heat & humidity in February in Hiroshima0
No heat & humidity in March in Hiroshima0
No heat & humidity in April in Hiroshima0
No heat & humidity in May in Hiroshima0
Low heat & humidity in June in HiroshimaL
High heat & humidity in July in HiroshimaH
Very high heat & humidity in August in HiroshimaVH
Moderate heat & humidity in September in HiroshimaM
No heat & humidity in October in Hiroshima0
No heat & humidity in November in Hiroshima0
No heat & humidity in December in Hiroshima0
Sea temperature
15°C sea temperature in January in Hiroshima15
14°C sea temperature in February in Hiroshima14
14°C sea temperature in March in Hiroshima14
15°C sea temperature in April in Hiroshima15
18°C sea temperature in May in Hiroshima18
21°C sea temperature in June in Hiroshima21
24°C sea temperature in July in Hiroshima24
26°C sea temperature in August in Hiroshima26
25°C sea temperature in September in Hiroshima25
23°C sea temperature in October in Hiroshima23
20°C sea temperature in November in Hiroshima20
17°C sea temperature in December in Hiroshima17

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Hiroshima

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Hiroshima10
11 hours of daylight per day in February in Hiroshima11
12 hours of daylight per day in March in Hiroshima12
13 hours of daylight per day in April in Hiroshima13
14 hours of daylight per day in May in Hiroshima14
14 hours of daylight per day in June in Hiroshima14
14 hours of daylight per day in July in Hiroshima14
13 hours of daylight per day in August in Hiroshima13
12 hours of daylight per day in September in Hiroshima12
11 hours of daylight per day in October in Hiroshima11
10 hours of daylight per day in November in Hiroshima10
10 hours of daylight per day in December in Hiroshima10
UV Index (Maximum)
UV (maximum) index 3 (Moderate) in January in Hiroshima3
UV (maximum) index 4 (Moderate) in February in Hiroshima4
UV (maximum) index 6 (High) in March in Hiroshima6
UV (maximum) index 8 (Very High) in April in Hiroshima8
UV (maximum) index 9 (Very High) in May in Hiroshima9
UV (maximum) index 10 (Very High) in June in Hiroshima10
UV (maximum) index 11 (Extreme) in July in Hiroshima11
UV (maximum) index 10 (Very High) in August in Hiroshima10
UV (maximum) index 8 (Very High) in September in Hiroshima8
UV (maximum) index 6 (High) in October in Hiroshima6
UV (maximum) index 4 (Moderate) in November in Hiroshima4
UV (maximum) index 3 (Moderate) in December in Hiroshima3

Rainfall in Hiroshima

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
19 days with some rainfall in January in Hiroshima19
18 days with some rainfall in February in Hiroshima18
18 days with some rainfall in March in Hiroshima18
15 days with some rainfall in April in Hiroshima15
14 days with some rainfall in May in Hiroshima14
17 days with some rainfall in June in Hiroshima17
17 days with some rainfall in July in Hiroshima17
14 days with some rainfall in August in Hiroshima14
16 days with some rainfall in September in Hiroshima16
12 days with some rainfall in October in Hiroshima12
13 days with some rainfall in November in Hiroshima13
17 days with some rainfall in December in Hiroshima17
Average monthly rainfall (mm)
58 mm monthly rainfall in January in Hiroshima58
69 mm monthly rainfall in February in Hiroshima69
111 mm monthly rainfall in March in Hiroshima111
161 mm monthly rainfall in April in Hiroshima161
154 mm monthly rainfall in May in Hiroshima154
267 mm monthly rainfall in June in Hiroshima267
249 mm monthly rainfall in July in Hiroshima249
125 mm monthly rainfall in August in Hiroshima125
186 mm monthly rainfall in September in Hiroshima186
105 mm monthly rainfall in October in Hiroshima105
76 mm monthly rainfall in November in Hiroshima76
47 mm monthly rainfall in December in Hiroshima47

More about Hiroshima

Hiroshima by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Japan (Hiroshima) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Hiroshima?

Hiroshima has a temperate climate with hot summers and some rainfall in all months.

Metric (°C / mm)  |  Imperial (°F / inches)

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Tropical storm risk: Hiroshima, Japan typhoon season

% of month affected by tropical storms
0
0
0
0
0
1.6%
3.1%
5.7%
5.1%
1.2%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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More about Japan

Compare Hiroshima with the USA

Below the Hiroshima chart shows average maximum daytime temperature for Hiroshima, Japan and the USA (Washington).

Maximum daytime temperature (°C)

Hiroshima, Japan
USA (Washington)
8
5
9
7
12
13
18
19
22
24
25
29
29
31
31
30
27
26
22
20
16
14
11
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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