Monthly weather forecast and climate
Bonn, Germany

A stand-alone ancient castle in Bonn, Germany, with an urban setting down below
A stand-alone ancient castle in Bonn, Germany, with an urban setting down below

Weather in January

January, like December, in Bonn, Germany, is a wintry winter month, with average temperature fluctuating between 4°C (39.2°F) and -0.3°C (31.5°F). With an average high-temperature of 4°C (39.2°F) and an average low-temperature of -0.3°C (31.5°F), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Bonn, Germany, with average temperature varying between 5.2°C (41.4°F) and -0.2°C (31.6°F). In Bonn, the average high-temperature in February is essentially the same as in January - a still wintry 5.2°C (41.4°F). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Bonn, Germany, with temperature in the range of an average high of 9.7°C (49.5°F) and an average low of 2°C (35.6°F). In March, the average high-temperature marginally rises, from a cold 5.2°C (41.4°F) in February, to a frosty 9.7°C (49.5°F). Weather in March »

Weather in April

April in Bonn, Germany, is a moderate spring month, with average temperature fluctuating between 5°C (41°F) and 15.1°C (59.2°F). In Bonn, the average high-temperature rises, from a frosty 9.7°C (49.5°F) in March, to a mild 15.1°C (59.2°F). Weather in April »

Weather in May

May, the last month of the spring, in Bonn, is a comfortable month, with temperature in the range of an average low of 7.7°C (45.9°F) and an average high of 17.8°C (64°F). In Bonn, the average high-temperature is practically the same as in April - an enjoyable 17.8°C (64°F). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Bonn, Germany, with average temperature ranging between max 21.3°C (70.3°F) and min 10.8°C (51.4°F). In Bonn, the average high-temperature in June marginally rises, from a comfortable 17.8°C (64°F) in May, to a pleasant 21.3°C (70.3°F). Weather in June »

Weather in July

July in Bonn, Germany, is a moderately hot summer month, with average temperature ranging between min 13°C (55.4°F) and max 23.5°C (74.3°F). July is the warmest month, with an average high-temperature of 23.5°C (74.3°F) and an average low-temperature of 13°C (55.4°F). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Bonn, Germany, with temperature in the range of an average high of 23.3°C (73.9°F) and an average low of 13.3°C (55.9°F). In August, the average high-temperature is practically the same as in July - a still moderately hot 23.3°C (73.9°F). Weather in August »

Weather in September

The first month of the autumn, September, is still a comfortable month in Bonn, Germany, with average temperature varying between 9.8°C (49.6°F) and 18.9°C (66°F). In September, the average high-temperature slightly decreases, from a moderately hot 23.3°C (73.9°F) in August, to a comfortable 18.9°C (66°F). Weather in September »

Weather in October

October, the same as September, in Bonn, Germany, is a moderate autumn month, with average temperature varying between 14°C (57.2°F) and 6.6°C (43.9°F). In Bonn, the average high-temperature in October marginally drops, from a comfortable 18.9°C (66°F) in September, to a mild 14°C (57.2°F). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Bonn, Germany, with average temperature varying between 8.9°C (48°F) and 3.7°C (38.7°F). In Bonn, the average high-temperature in November decreases, from a mild 14°C (57.2°F) in October, to a chilly 8.9°C (48°F). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Bonn, Germany, with average temperature fluctuating between 1.2°C (34.2°F) and 5.4°C (41.7°F). In December, the average high-temperature slightly decreases, from a chilly 8.9°C (48°F) in November, to a cold 5.4°C (41.7°F). Weather in December »
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FAQ

What is the coldest month in Bonn?

The coldest month in Bonn is January, with an average high-temperature of 4°C (39.2°F) and an average low-temperature of -0.3°C (31.5°F).

How many days does it rain in Bonn?

In Bonn, Germany, during the entire year, the rain falls for 156 days and collects up to 305mm (12.01") of precipitation.

When does it snow in Bonn?

January through March, November and December are months with snowfall in Bonn.

How many days does it snow in Bonn?

Throughout the year, there are 19.5 snowfall days, and 98mm (3.86") of snow is accumulated.

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

Months with the lowest UV index in Bonn are January, February, November and December, with an average maximum UV index of 2.

When does it snow the most in Bonn?

February is the month with the most snowfall. Snow falls for 5.3 days and accumulates 35mm (1.38") of snow.

What is the driest month in Bonn?

April and September are months with the least rain when the rain falls for 11.8 days and typically aggregates up to 17mm (0.67") of rain.

When it does not snow in Bonn?

In Bonn snow does not fall in April through October.

When are the longest days in Bonn?

With an average of 16.4h of daylight, June has the longest days of the year.

What are the months with the highest UV index in Bonn?

June and July, with an average maximum UV index of 5, are months with the highest UV index in Bonn.

What is the warmest month in Bonn?

The warmest month in Bonn is July, with an average high-temperature of 23.5°C (74.3°F) and an average low-temperature of 13°C (55.4°F).

What are the least humid months in Bonn?

Months with the lowest humidity are July and August, with an average relative humidity of 73%.

What month has the most sunshine in Bonn?

July has the most sunshine of the year in Bonn, Germany, with an average of 9.9h of sunshine.

What is the wettest month in Bonn?

The month with the most rainfall is August when the rain falls for 14.3 days and typically aggregates up to 33mm (1.3") of precipitation.

What is the most humid month in Bonn?

The most humid month is December, with an average relative humidity of 89%.

What is the month with the shortest days in Bonn?

The month with the shortest days in Bonn is December, with an average of 8.1h of daylight.

What is the month with the least sunshine in Bonn?

With an average of 3.8h of sunshine, December has the least sunshine of the year in Bonn, Germany.

Average pressure
Bonn, Germany

Average pressure - Bonn, Germany

The month with the highest atmospheric pressure is September (1017.8mbar).
The month with the lowest atmospheric pressure is November (1013.6mbar).

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Average wind speed
Bonn, Germany

Average wind speed - Bonn, Germany

The windiest month (with the highest average wind speed) is February (12.8km/h).
The calmest month (with the lowest average wind speed) is August (8.9km/h).

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Average humidity
Bonn, Germany

Average humidity - Bonn, Germany

The month with the highest relative humidity is December (89%).
Months with the lowest relative humidity are July and August (73%).

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Average rainfall
Bonn, Germany

Average rainfall - Bonn, Germany

The wettest month (with the highest rainfall) is August (33mm).
The driest months (with the least rainfall) are April and September (17mm).

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Average rainfall days
Bonn, Germany

Average rainfall days - Bonn, Germany

The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is February (10.4 days).

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Average snowfall
Bonn, Germany

Average snowfall - Bonn, Germany

The month with the highest snowfall is February (35mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days
Bonn, Germany

Average snowfall days - Bonn, Germany

The month with the highest number of snowfall days is January (6 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Bonn, Germany

Average daylight / Average sunshine - Bonn, Germany

The month with the longest days is June (Average daylight: 16.4h).
The month with the shortest days is December (Average daylight: 8.1h).

The month with the most sunshine is July (Average sunshine: 9.9h).
The month with the least sunshine is December (Average sunshine: 3.8h).

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Average sunshine days
Bonn, Germany

Average sunshine days - Bonn, Germany

The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is December (11.4 days).

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Average UV index
Bonn, Germany

Average UV index - Bonn, Germany

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Bonn, Germany

Average visibility - Bonn, Germany

Months with the highest visibility are March, April, May, June, July and August (9km).
Months with the lowest visibility are January, February, September, October, November and December (8km).

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