January weather forecast
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, the same as December, is another cold winter month in Bonn, Germany, with temperature in the range of an average low of -0.3°C (31.5°F) and an average high of 4°C (39.2°F).

Temperature

The coldest month 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).

Humidity

In Bonn, the average relative humidity in January is 88%.

Rainfall

In Bonn, in January, it is raining for 12.6 days, with typically 22mm (0.87") of accumulated precipitation. Throughout the year, in Bonn, there are 156 rainfall days, and 305mm (12.01") of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Bonn. In Bonn, in January, during 6 snowfall days, 25mm (0.98") of snow is typically accumulated. Throughout the year, in Bonn, there are 19.5 snowfall days, and 98mm (3.86") of snow is accumulated.

Daylight

The average length of the day in January in Bonn is 8h and 33min.
On the first day of January in Bonn, sunrise is at 08:33 and sunset at 16:36. On the last day of the month, sunrise is at 08:08 and sunset at 17:21 CET.

Sunshine

In January, the average sunshine in Bonn is 4h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in January transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Bonn?

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

What is the temperature in January in Bonn?

In January, in Bonn, the average high-temperature is 4°C (39.2°F), and the average low-temperature is -0.3°C (31.5°F).

What is the average humidity in January in Bonn?

In Bonn, Germany, the average relative humidity in January is 88%.

How many days does it rain in January in Bonn?

In Bonn, in January, during 12.6 rainfall days, 22mm (0.87") of precipitation is typically accumulated.

How much does it snow in Bonn in January?

In January, in Bonn, Germany, it is snowing for 6 days. Throughout January, 25mm (0.98") of snow is accumulated.

What is the average length of the day in January in Bonn?

In Bonn, the average day length in January is 8h and 33min.

When is the sunrise / sunset in January in Bonn?

On the first day of January, sunrise is at 08:33 and sunset at 16:36. On the last day of the month, sunrise is at 08:08 and sunset at 17:21 CET.

How many hours of sunshine does Bonn have in January?

In Bonn, the average sunshine duration in January is 4h.

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

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

What is the UV index reading in January in Bonn?

The average daily maximum UV index in January in Bonn is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Bonn, Germany

Average temperature in January - Bonn, Germany
  • Average high temperature in January: 4°C

The warmest month (with the highest average high temperature) is July (23.5°C).
The month with the lowest average high temperature is January (4°C).

  • Average low temperature in January: -0.3°C

The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (-0.3°C).

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Average pressure in January
Bonn, Germany

Average pressure in January - Bonn, Germany
  • Average pressure in January: 1016.8mbar

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 in January
Bonn, Germany

Average wind speed in January - Bonn, Germany
  • Average wind speed in January: 12.4km/h

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 in January
Bonn, Germany

Average humidity in January - Bonn, Germany
  • Average humidity in January: 88%

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

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Average rainfall in January
Bonn, Germany

Average rainfall in January - Bonn, Germany
  • Average rainfall in January: 22mm

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 in January
Bonn, Germany

Average rainfall days in January - Bonn, Germany
  • Average rainfall days in January: 12.6 days

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 in January
Bonn, Germany

Average snowfall in January - Bonn, Germany
  • Average snowfall in January: 25mm

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

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Average snowfall days in January
Bonn, Germany

Average snowfall days in January - Bonn, Germany
  • Average snowfall days in January: 6 days

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

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Average daylight in January /
Average sunshine in January
Bonn, Germany

Average daylight in January / Average sunshine in January - Bonn, Germany
  • Average daylight in January: 8h and 33min

The month with the longest days is June (Average daylight: 16h and 25min).
The month with the shortest days is December (Average daylight: 8h and 3min).

  • Average sunshine in January: 4h and 0min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).

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Average sunshine days in January
Bonn, Germany

Average sunshine days in January - Bonn, Germany
  • Average sunshine days in January: 12.8 days

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 in January
Bonn, Germany

Average UV index in January - Bonn, Germany
  • Average UV index in January: 2

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

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Average cloud cover in January
Bonn, Germany

Average cloud cover in January - Bonn, Germany
  • Average cloud cover in January: 61

The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in January
Bonn, Germany

Average visibility in January - Bonn, Germany
  • Average visibility in January: 8km

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

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