Weather in Bonn

• All Year
• Summer
• Autumn
• Winter
• Spring

Yearly weather

Calculations are based on the last 8 years of historical weather data.

Temperatures

• In Bonn, temperatures show a clear seasonal variation, with the lowest averages in January (1.6°C min, 6.0°C max) and the highest in July (14.4°C min, 24.3°C max).

• The warmest months are June to August, reaching peak temperatures near 25°C, while temperatures drop significantly in late autumn and winter.

Conditions

• In Bonn, the overall trend shows that sun hours peak during the summer months, particularly in June with an average of 6.1 hours, while precipitation levels tend to be relatively stable throughout the year, hovering between 1.78mm and 3.12mm.

• Notably, April has the best balance of sun and low precipitation, while January and December feature the least sun hours, indicating a more overcast and rainy climate during the winter months.

Astronomy

• In Bonn, the earliest sunrise occurs in June at 05:19, while the latest sunrise is seen in December at 08:25.

• Conversely, the latest sunset is also in June at 21:45, with the earliest sunset in December at 16:28, highlighting significant seasonal differences in daylight hours.

• The shortest day occurs in December, lasting 8 hours and 2 minutes, compared to the longest day in June, which spans 16 hours and 25 minutes, indicating a drastic change in day length throughout the year.