Monthly weather forecast and climate
Hiroshima, Japan

Weather in January

January, the same as December, in Hiroshima, Japan, is a frosty winter month, with average temperature varying between 9.7°C (49.5°F) and 1.7°C (35.1°F). January is the coldest month, with an average high-temperature of 9.7°C (49.5°F) and an average low-temperature of 1.7°C (35.1°F). Weather in January »

Weather in February

The last month of the winter, February, is a cool month in Hiroshima, Japan, with average temperature fluctuating between 2.1°C (35.8°F) and 10.6°C (51.1°F). In February, the average high-temperature is almost the same as in January - a fresh 10.6°C (51.1°F). Weather in February »

Weather in March

March, the first month of the spring, in Hiroshima, is a mild month, with temperature in the range of an average high of 14°C (57.2°F) and an average low of 4.8°C (40.6°F). In March, the average high-temperature slightly increases, from a fresh 10.6°C (51.1°F) in February, to a mild 14°C (57.2°F). Weather in March »

Weather in April

April is an enjoyable spring month in Hiroshima, Japan, with temperature in the range of an average high of 19.7°C (67.5°F) and an average low of 9.9°C (49.8°F). In Hiroshima, the average high-temperature in April increases, from a moderate 14°C (57.2°F) in March, to an enjoyable 19.7°C (67.5°F). Weather in April »

Weather in May

May, the last month of the spring, in Hiroshima, is a moderately hot month, with temperature in the range of an average low of 14.7°C (58.5°F) and an average high of 24.1°C (75.4°F). In May, the average high-temperature slightly increases, from a comfortable 19.7°C (67.5°F) in April, to a moderately hot 24.1°C (75.4°F). Weather in May »

Weather in June

June, the first month of the summer, in Hiroshima, is also a moderately hot month, with average temperature varying between 19.4°C (66.9°F) and 27.2°C (81°F). In June, the average high-temperature slightly increases, from a warm 24.1°C (75.4°F) in May, to a still moderately hot 27.2°C (81°F). Weather in June »

Weather in July

July in Hiroshima, Japan, is a tropical summer month, with average temperature fluctuating between 23.8°C (74.8°F) and 30.8°C (87.4°F). In Hiroshima, the average high-temperature in July marginally rises, from a moderately hot 27.2°C (81°F) in June, to a hot 30.8°C (87.4°F). Weather in July »

Weather in August

August, the last month of the summer, in Hiroshima, is another hot month, with average temperature fluctuating between 24.8°C (76.6°F) and 32.5°C (90.5°F). The warmest month is August, with an average high-temperature of 32.5°C (90.5°F) and an average low-temperature of 24.8°C (76.6°F). In August, the average heat index is evaluated at an extremely hot 42.3°C (108.1°F). Weather in August »

Weather in September

September, the first month of the autumn, in Hiroshima, is still a warm month, with average temperature ranging between min 20.8°C (69.4°F) and max 29°C (84.2°F). In Hiroshima, the average high-temperature marginally drops, from a tropical 32.5°C (90.5°F) in August, to a warm 29°C (84.2°F). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Hiroshima, Japan, with average temperature fluctuating between 14.2°C (57.6°F) and 23.4°C (74.1°F). In Hiroshima, the average high-temperature decreases, from a warm 29°C (84.2°F) in September, to a still moderately hot 23.4°C (74.1°F). Weather in October »

Weather in November

November, the last month of the autumn, in Hiroshima, is also an enjoyable month, with average temperature fluctuating between 8.5°C (47.3°F) and 17.4°C (63.3°F). In November, the average high-temperature decreases, from a moderately hot 23.4°C (74.1°F) in October, to a comfortable 17.4°C (63.3°F). Weather in November »

Weather in December

December, the first month of the winter, in Hiroshima, is also a fresh month, with temperature in the range of an average high of 12.3°C (54.1°F) and an average low of 3.7°C (38.7°F). In Hiroshima, Japan, the average high-temperature in December decreases, from a comfortable 17.4°C (63.3°F) in November, to a cool 12.3°C (54.1°F). Weather in December »
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FAQ

What is the coldest month in Hiroshima?

With an average high-temperature of 9.7°C (49.5°F) and an average low-temperature of 1.7°C (35.1°F), January is the coldest month in Hiroshima, Japan.

How many days does it rain in Hiroshima?

In Hiroshima, Japan, during the entire year, the rain falls for 190 days and collects up to 1537.6mm (60.54") of precipitation.

When does it snow in Hiroshima?

Months with snowfall in Hiroshima are January through March and December.

How much does it snow in Hiroshima?

Throughout the year, in Hiroshima, Japan, there are 23.1 snowfall days, and 130mm (5.12") of snow is accumulated.

When does it snow the most in Hiroshima?

January is the month with the most snowfall in Hiroshima. Snow falls for 8.7 days and accumulates 50mm (1.97") of snow.

What is the month with the least sunshine in Hiroshima?

January has the least sunshine of the year in Hiroshima, with an average of 4.4h of sunshine.

What is the month with the lowest UV index in Hiroshima?

January and December, with an average maximum UV index of 3, are months with the lowest UV index in Hiroshima.

When is the sea coldest in Hiroshima?

February is the month with the coldest seawater, with an average sea temperature of 12.4°C (54.3°F).

What is the least humid month in Hiroshima?

With an average relative humidity of 63%, April is the least humid month in Hiroshima.

When it does not snow in Hiroshima?

In Hiroshima, Japan, snow does not fall in April through November.

When are the longest days in Hiroshima?

June has the longest days of the year in Hiroshima, with an average of 14.4h of daylight.

What is the most humid month in Hiroshima?

July is the most humid month, with an average relative humidity of 74%.

What is the rainiest month in Hiroshima?

July is the month with the most rainfall in Hiroshima, Japan. Rain falls for 17 days and accumulates 258.6mm (10.18") of precipitation.

What is the month with the highest UV index in Hiroshima?

With an average maximum UV index of 11, July is the month with the highest UV index in Hiroshima.

What is the warmest month in Hiroshima?

August is the warmest month, with an average high-temperature of 32.5°C (90.5°F) and an average low-temperature of 24.8°C (76.6°F).

What month is the sea warmest in Hiroshima?

August is the month with the warmest seawater in Hiroshima, Japan, with an average sea temperature of 26.8°C (80.2°F).

What month has the most sunshine in Hiroshima?

With an average of 6.8h of sunshine, August has the most sunshine of the year in Hiroshima, Japan.

What is the driest month in Hiroshima?

December is the month with the least rainfall. Rain falls for 17 days and accumulates 41.2mm (1.62") of precipitation.

What is the month with the shortest days in Hiroshima?

The month with the shortest days is December, with an average of 9.9h of daylight.

Average temperature
Hiroshima, Japan

Average temperature - Hiroshima, Japan

The warmest month (with the highest average high temperature) is August (32.5°C).
The month with the lowest average high temperature is January (9.7°C).

The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).

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Average rainfall
Hiroshima, Japan

Average rainfall - Hiroshima, Japan

The wettest month (with the highest rainfall) is July (258.6mm).
The driest month (with the least rainfall) is December (41.2mm).

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Average rainfall days
Hiroshima, Japan

Average rainfall days - Hiroshima, Japan

The month with the highest number of rainy days is January (19 days).
The month with the least rainy days is October (12 days).

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Average snowfall
Hiroshima, Japan

Average snowfall - Hiroshima, Japan

The month with the highest snowfall is January (50mm).
Months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days
Hiroshima, Japan

Average snowfall days - Hiroshima, Japan

The month with the highest number of snowfall days is January (8.7 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature
Hiroshima, Japan

Average sea temperature - Hiroshima, Japan

The best month for swimming (with the highest average sea temperature) is August (26.8°C).
The coldest month (with the lowest average sea temperature) is February (12.4°C).

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Average daylight / Average sunshine
Hiroshima, Japan

Average daylight / Average sunshine - Hiroshima, Japan

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

The month with the most sunshine is August (Average sunshine: 6.8h).
The month with the least sunshine is January (Average sunshine: 4.4h).

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