August weather forecast
Bonn, Germany

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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 August

The weather remains warm and welcoming in August in Bonn, Germany. There is a trivial diminution in the average temperature from July, but not enough to bring a significant change. Rainfall is slightly higher than in previous months, but it does nothing to dampen the spirits of Bonn's residents and visitors alike. While the length of daylight hours starts to recede a bit, the city still enjoys ample sunshine. Be it a peaceful walk in the park or sitting in a cafe enjoying the mild weather, August in Bonn proves to be unhurried, relaxed, and utterly enjoyable.

Temperature

The arrival of August coincides with an average high-temperature of a still moderately hot 23.3°C (73.9°F), indicating a minimal shift from July's 23.5°C (74.3°F). The temperature lowers to an average of 13.3°C (55.9°F) during August nights.

Humidity

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

Rainfall

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

Snowfall

In Bonn, snow does not fall in April through October.

Daylight

In August, the average length of the day in Bonn is 14h and 29min.
On the first day of August in Bonn, sunrise is at 05:59 and sunset at 21:16. On the last day of the month, sunrise is at 06:44 and sunset at 20:18 CEST.

Sunshine

In Bonn, the average sunshine in August is 9.8h.

UV index

In August, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The UV index of 4 during August translates into the following guidance:
Prioritize safety - Suggestions to prevent sun damage are offered. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Frequently asked questions

What are the temperatures in Bonn in August?

The high-temperature, in August, in Bonn, records 23.3°C (73.9°F), while the low-temperature is 13.3°C (55.9°F).

What are the least humid months in Bonn?

July and August, with an average relative humidity of 73%, are the least humid months in Bonn, Germany.

What is the average humidity in August in Bonn?

The average relative humidity in August is 73%.

What is the wettest month in Bonn?

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

How many days does it rain in August in Bonn?

In Bonn, in August, during 14.3 rainfall days, 33mm (1.3") of precipitation is typically accumulated.

When it does not snow in Bonn?

In Bonn, Germany, snow does not fall in April through October.

How many hours of daylight does Bonn have in August?

In August, the average day length in Bonn, Germany, is 14h and 29min.

When are sunrise and sunset in August in Bonn?

In August, on the first day of the month, sunrise is at 05:59 and sunset at 21:16. On the last day of the month, in Bonn, sunrise is at 06:44 and sunset at 20:18 CEST.

How long on average sun shines in August in Bonn?

In August, the average sunshine duration in Bonn, Germany, is 9.8h.

What is the UV index intensity in August in Bonn?

In August, the average daily maximum UV index in Bonn, Germany, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Bonn, Germany

Average temperature in August - Bonn, Germany
  • Average high temperature in August: 23.3°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 August: 13.3°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 August
Bonn, Germany

Average pressure in August - Bonn, Germany
  • Average pressure in August: 1015.9mbar

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 August
Bonn, Germany

Average wind speed in August - Bonn, Germany
  • Average wind speed in August: 8.9km/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 August
Bonn, Germany

Average humidity in August - Bonn, Germany
  • Average humidity in August: 73%

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 August
Bonn, Germany

Average rainfall in August - Bonn, Germany
  • Average rainfall in August: 33mm

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 August
Bonn, Germany

Average rainfall days in August - Bonn, Germany
  • Average rainfall days in August: 14.3 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 August
Bonn, Germany

Average snowfall in August - Bonn, Germany
  • Average snowfall in August: 0mm

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 August
Bonn, Germany

Average snowfall days in August - Bonn, Germany
  • Average snowfall days in August: 0 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 August /
Average sunshine in August
Bonn, Germany

Average daylight in August / Average sunshine in August - Bonn, Germany
  • Average daylight in August: 14h and 3min

The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).

  • Average sunshine in August: 9h and 5min

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 August
Bonn, Germany

Average sunshine days in August - Bonn, Germany
  • Average sunshine days in August: 13.1 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 August
Bonn, Germany

Average UV index in August - Bonn, Germany
  • Average UV index in August: 4

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 August
Bonn, Germany

Average cloud cover in August - Bonn, Germany
  • Average cloud cover in August: 37

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 August
Bonn, Germany

Average visibility in August - Bonn, Germany
  • Average visibility in August: 9km

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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Bonn, Germany

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