Hiroshima weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
January
February
March
April
May
June
July
August
September
October
November
December
Overview
Hiroshima weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
January
February
March
April
May
June
July
August
September
October
November
December
Overview
Day
10 °C
Night
1 °C
Sea
15 °C
Precipitation
61 mm
in month
Rainy days
9 days
in month
Daylight
10 hours
average
Sunshine
4 hours
average
Humidity
68 %
Day
10 °C
Night
1 °C
Sea
15 °C
Precipitation
61 mm
in month
Rainy days
9 days
in month
Daylight
10 hours
average
Sunshine
4 hours
average
Humidity
68 %
Overview: Hiroshima
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We make the most from 40 years of historical weather data to predict the best weather conditions.Weather overview for Hiroshima
Weather overview
Hiroshima (Japan) is a place with a mild continental climate. The day temperatures range from 10 °C (49 °F) in January to 32 °C (89 °F) in August. The least rainy month in Hiroshima is October with its 9 days of rain, the rainiest month is July, when it rains 13 days. The highest night temperatures could be experienced in August with 23 °C (74 °F), the lowest in January with 1 °C (34 °F).
January weather
The minimum of the day temperature can be noticed in Hiroshima, and the night temperature reaches its minimum as well, with its value being 1 °C (34 °F). The rainfall amount rise's start could be observed in this month. The minimum of the number of sun hours (without clouds) can be noticed in January.
February weather
The day temperature starts to rise, with its value of 10 °C (51 °F) in Hiroshima. The number of rainy days starts to rise, while the rainfall amount rises similarly to the previous month, with its value of 78 mm (3.05 in). The beginning of the rise of the number of sun hours (without clouds) could be noticed, the value of this measure is 4 hours. The wind speed is on its maximum in this month.
March weather
The day temperature rises similarly to the previous month, with its value of 13 °C (56 °F) in Hiroshima, while the night temperature starts to rise, its value is 4 °C (39 °F). The number of rainy days continues to rise, with its value of 11 days, and the rainfall amount rises similarly to the previous month as well, its value is 130 mm (5.12 in). The rise of the number of sun hours (without clouds) can be observed, the value of this measure is 5 hours. The minimum of the humidity is observable in this month.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.April weather
The day temperature rises similarly to the previous month, with its value being 19 °C (66 °F) in Hiroshima, and the rise of the night temperature can be observed too, with its value being 9 °C (48 °F). The number of rainy days starts to descent, with its value being 10 days, while the rainfall amount rises similarly to the previous month, with its value of 153 mm (6.00 in). The number of sun hours (without clouds) continues to rise, the value of this measure is 6 hours.
May weather
The tourist season is at its beginning in Hiroshima. The day temperature continues to rise, its value is 23 °C (74 °F). The rainfall amount continues to rise, its value is 187 mm (7.35 in), on the contrary the descent of the number of rainy days can be observed, with its value being 10 days. The number of sun hours (without clouds) rises similarly to the previous month, the value of this measure is 6 hours.
June weather
The tourist season is close to its peak in Hiroshima. The day temperature continues to rise, with its value being 26 °C (79 °F). The number of rainy days rise's start could be observed, with its value being 13 days, while the maximum of the rainfall amount is observable, with its value of 272 mm (10.72 in). The wind speed reaches its minimum, with its value being 3.
July weather
The rise of the day temperature can be observed, the value of this measure is 30 °C (86 °F) in Hiroshima, and the night temperature rises similarly to the previous month as well. The maximum of the number of rainy days can be noticed, while the rainfall amount starts to descent in July. The humidity is on its maximum, with its value being 80 %.
We make the most from 40 years of historical weather data to predict the best weather conditions.August weather
The day temperature reaches its maximum, its value is 32 °C (89 °F) in Hiroshima, and the maximum of the night temperature is observable too, with its value being 23 °C (74 °F). The beginning of the descent of the number of rainy days could be noticed, the value of this measure is 11 days, while the rainfall amount descents similarly to the previous month, the value of this measure is 159 mm (6.25 in). The number of sun hours (without clouds) is on its maximum, with its value being 7 hours.
September weather
The tourist season is at its beginning in Hiroshima. The beginning of the descent of the day temperature could be noticed, and the beginning of the descent of the night temperature could be noticed too in this month. The rainfall amount rise's start could be observed, the value of this measure is 215 mm (8.47 in). The number of sun hours (without clouds) starts to descent, its value is 5 hours.
October weather
The tourist season continues in Hiroshima. The day temperature continues to descent, with its value being 23 °C (74 °F), and the night temperature descents similarly to the previous month too, with its value of 13 °C (56 °F). The number of rainy days is on its minimum, its value is 9 days, while the rainfall amount starts to descent in October.
November weather
The day temperature descents similarly to the previous month, with its value being 17 °C (63 °F) in Hiroshima, and the night temperature continues to descent as well, the value of this measure is 8 °C (46 °F). The descent of the rainfall amount can be observed, with its value being 87 mm (3.42 in). The number of sun hours (without clouds) starts to descent, with its value of 5 hours.
December weather
The descent of the day temperature can be observed, with its value of 12 °C (54 °F) in Hiroshima, and the night temperature continues to descent as well, its value is 3 °C (37 °F). The minimum of the rainfall amount can be noticed, the value of this measure is 55 mm (2.18 in). The descent of the number of sun hours (without clouds) can be observed, the value of this measure is 4 hours. The day length is on its minimum, its value is 10 hours.
FAQs
What is the humidity in Hiroshima in March?
Humidity in Hiroshima in March is 68 %.
What is the night temperature in Hiroshima in April?
The average night temperature in April in Hiroshima is 9 °C (48 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.
What is the sea temperature in Hiroshima in May?
The temperature of the sea in May in Hiroshima is 18 °C (64 °F). At this sea temperature, swimming probably won't be the best experience. You probably won't like to stay in water for a long time. On the other hand, there are a minority of people who seek these conditions.
Is it hot in Hiroshima in June?
In Hiroshima in June, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
We make the most from 40 years of historical weather data to predict the best weather conditions.How many rainy days can I expect in July in Hiroshima?
In Hiroshima in July, we can expect 13 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 3.0 days of the week, or in general - 43 % days.
Are there good conditions to visit in Hiroshima in August?
There are good conditions for visiting in August in Hiroshima. The daily temperatures in this month reach pleasant 32 °C (89 °F). The temperature of the sea will be perfect at 26 °C (79 °F). At night, temperatures hover around a pleasant 23 °C (74 °F).
What temperature can I expect during the day in September in Hiroshima?
In Hiroshima in September, the average daily temperatures will be 28 °C (82 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
Is there a wet season in October in Hiroshima?
No, there is no wet season in Hiroshima in October - you can expect 9 days of rain during the month.
How many hours of sun to expect in Hiroshima in November?
In Hiroshima in November, you can expect around 5 hours of sunshine.
How windy is Hiroshima in December?
An average wind scale that can be expected in December in Hiroshima is 3.
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