May weather forecast
Cologne, Germany

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Weather in May

May's arrival blankets Cologne in definitive warmth. The high temperature stretches to an average of 19.3°C (66.7°F), accompanied by a moderate rise in the number of daylight hours to 15.6. It emphasizes the warm welcome of summer in the city with abundant sunshine, but sees a significant upturn in the rainfall to 72mm (2.83"). Nonetheless, the month holds a charm with blooming flora, vibrant city life, and sunny skies. Come June, the weather becomes warmer and the days extend to their longest duration.

Temperature

May in Cologne sees a marginal temperature increase, moving from a mild 15.1°C (59.2°F) in April to an enjoyable 19.3°C (66.7°F). During the month of May, Cologne's nighttime temperature lowers to an average of 8.1°C (46.6°F).

Rainfall

In Cologne, in May, it is raining for 16 days, with typically 72mm (2.83") of accumulated precipitation. In Cologne, Germany, during the entire year, the rain falls for 192 days and collects up to 839mm (33.03") of precipitation.

Daylight

In May, the average length of the day in Cologne is 15h and 34min.
On the first day of May in Cologne, Germany, sunrise is at 06:04 and sunset at 20:54. On the last day of the month, sunrise is at 05:23 and sunset at 21:36 CEST.

Sunshine

The months with the most sunshine are May through July, with an average of 5.9h of sunshine.

UV index

In May, the average daily maximum UV index in Cologne is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 6 in May translates into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

What is the temperature in May in Cologne?

An average high-temperature, in May, in Cologne, is 19.3°C (66.7°F) and the average low-temperature is 8.1°C (46.6°F).

How much does it rain in Cologne in May?

In May, the rain falls for 16 days. Throughout May, 72mm (2.83") of precipitation is accumulated.

How many hours of daylight does Cologne have in May?

The average day length in May in Cologne, Germany, is 15h and 34min.

When are sunrise and sunset in May in Cologne?

In May, on the first day of the month, sunrise is at 06:04 and sunset at 20:54. On the last day of the month, in Cologne, Germany, sunrise is at 05:23 and sunset at 21:36 CEST.

What are the months with the most sunshine in Cologne?

May through July, with an average of 5.9h of sunshine, are months with the most sunshine.

How many hours of sunshine does Cologne have in May?

In Cologne, Germany, the average sunshine duration in May is 5.9h.

What is the UV index intensity in May in Cologne?

The average daily maximum UV index in May in Cologne, Germany, is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
Cologne, Germany

Average temperature in May - Cologne, Germany
  • Average high temperature in May: 19.3°C

The warmest month (with the highest average high temperature) is July (24.4°C).
The month with the lowest average high temperature is January (5.4°C).

  • Average low temperature in May: 8.1°C

The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is February (-0.7°C).

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Average rainfall in May
Cologne, Germany

Average rainfall in May - Cologne, Germany
  • Average rainfall in May: 72.2mm

The wettest month (with the highest rainfall) is June (90.7mm).
The driest month (with the least rainfall) is April (53.9mm).

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Average rainfall days in May
Cologne, Germany

Average rainfall days in May - Cologne, Germany
  • Average rainfall days in May: 16 days

The months with the highest number of rainy days are January and December (18 days).
The month with the least rainy days is February (14 days).

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Average daylight in May /
Average sunshine in May
Cologne, Germany

Average daylight in May / Average sunshine in May - Cologne, Germany
  • Average daylight in May: 15h and 4min

The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).

  • Average sunshine in May: 5h and 5min

The months with the most sunshine are May, June and July (Average sunshine: 5h and 54min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).

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Average UV index in May
Cologne, Germany

Average UV index in May - Cologne, Germany
  • Average UV index in May: 6

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Cologne, Germany

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