Cologne features a temperate oceanic climate with mild to warm summers and cool, damp winters. Rainfall is moderate and evenly distributed throughout the year, with the wettest months in summer. Seasonal changes bring variable temperatures, frequent clouds, and brisk winds, making Cologne a city of mild contrasts and year-round travel appeal.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Cologne’s climate is shaped by its location in western Germany, resulting in four distinct seasons and moderate weather year-round. Winters (December–February) are cool and damp, with average highs of 5–7°C and lows near 0°C. Snow is rare and usually light, but frost and fog are common. Winds can be brisk, especially from November to March, and humidity often makes the cold feel sharper. Sunshine is limited in winter, with only 1.5–2 hours per day, and daylight is shortest in December and January.
Spring (March–May) brings gradual warming, with highs rising from 10°C in March to 19°C by May. Rainfall is moderate, and weather can be changeable, with both chilly and warm spells. Summers (June–August) are mild to warm, with average highs of 22–25°C and lows around 13–15°C. July is typically the warmest month, and heatwaves above 30°C are possible but uncommon. Rainfall peaks in June and July, often as brief showers or afternoon thunderstorms, and the city receives 6–6.5 hours of sunshine per day at the height of summer. Autumn (September–November) is mild to cool, with highs dropping from 20°C in September to 9°C in November. Rain and wind increase, and the city’s parks turn golden with autumn foliage. Annual precipitation averages 800 mm, with about 150–160 rainy days per year. Cologne enjoys roughly 1,500–1,600 hours of sunshine annually, with the sunniest months from May to August. Winds are moderate to strong, especially in the colder months, and fog is common near the Rhine River.
| Average climate data for Cologne, Germany | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 5 | 7 | 11 | 15 | 19 | 22 | 24 | 24 | 20 | 15 | 9 | 6 | 24 |
| Average minimum temperature (°C) | -1 | -1 | 2 | 4 | 8 | 11 | 13 | 13 | 10 | 7 | 3 | 0 | -1 |
| Average precipitation (mm) | 62 | 54 | 64 | 53 | 73 | 91 | 87 | 74 | 76 | 66 | 67 | 72 | 838 |
| Average rainfall days (days) | 18 | 14 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 17 | 18 | 192 |
| Average daily daylight hours (h) | 8 | 10 | 11 | 13 | 15 | 16 | 16 | 14 | 12 | 10 | 9 | 8 | 12 |
| Average daily sunshine hours (h) | 1 | 2 | 3 | 5 | 5 | 5 | 5 | 5 | 4 | 3 | 1 | 1 | 3 |
| Average UV index | 1 | 1 | 3 | 4 | 6 | 7 | 6 | 6 | 4 | 2 | 1 | 1 | 4 |
The best time to visit Cologne is from mid-May to mid-September, when temperatures are mild to warm (18–25°C), daylight is long, and the city is lively with festivals and outdoor events. Spring (April–May) and early autumn (September) also offer pleasant weather, blooming parks, and fewer crowds, making them ideal for sightseeing and enjoying Cologne’s vibrant atmosphere.
The least favourable time to visit is from November to February, when Cologne is coldest, daylight hours are shortest, and rain, fog, and dampness are most frequent. While winter brings festive charm with Christmas markets and Carnival, outdoor exploration can be less comfortable due to chilly, wet, and unpredictable weather.
Cologne has a temperate oceanic climate with mild to warm summers and cool, damp winters. Rain falls throughout the year, with the wettest months in summer. Seasonal changes bring variable temperatures and frequent clouds.
Summer temperatures in Cologne typically reach 22–25°C, but heatwaves can push highs above 30°C. Nights are mild, and rain showers or thunderstorms are common, especially in June and July.
Snow is rare in Cologne and usually light, occurring mainly from December to February. Most winter precipitation falls as rain, and snow cover is typically minimal and short-lived.
Rain falls year-round, but June and July are usually the wettest months. Showers and thunderstorms are frequent in summer, while spring and autumn see moderate rainfall spread over many days.
Cologne enjoys about 1,500–1,600 hours of sunshine annually. May to August are the sunniest months, with up to 6–6.5 hours of sunshine per day, while winter months average just 1.5–2 hours daily.
Bring layers, a waterproof jacket, and water-resistant shoes. Even in summer, pack a jumper or light jacket for cool evenings. An umbrella is essential for sudden showers in any season.
Winds are moderate to strong, especially from November to March. Humidity is high year-round, making cold feel sharper in winter and warm spells muggy in summer. Fog is common near the Rhine River.
The warmest month, with the highest average maximum temperature, is July (24.3 °C). The month with the lowest average maximum temperature is January (5.3 °C). Overall, the average maximum temperature over the whole year is 14.8 °C.
The month with the highest average minimum temperature is July (13.3 °C). The coldest month, with the lowest average minimum temperature, is February (-0.7 °C). Overall, the average minimum temperature over the whole year is 5.8 °C.
The wettest month, with the highest amount of precipitation, is June (91.4 mm). The driest month, with the least amount of precipitation, is April (53.3 mm). Over the whole year there are 838.1 mm of rainfall on average.
The month with the most days of rain is December (18 days). The month with the fewest days of rain is February (14 days). Over the whole year there are 192.1 days of rain on average.
The month with the longest days, so the most daylight, is June (Average daylight: 16 h). The month with the shortest days, so the least daylight, is December (Average daylight: 8 h). Over the whole year there are 11.9 h of daylight per day on average.
The month with the most sunshine per day is May (Average sunshine: 5.1 h). The month with the least sunshine per day is January (Average sunshine: 0.9 h). Over the whole year there are 3.4 h of sunlight per day on average.
The month with the highest average UV index is June (UV index: 7). The months with the lowest average UV index are January, February, November and December (UV index: 1). Over the whole year the average UV index is 3.5.
