Weather in Köln for May 2025
In general, the average temperature in Köln at the beginning of May is 18 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 20.3 °C by the end of May.
The climate of Köln in May is notably wet, with an average of 13 rainy days.
Is May a good time to visit Köln? check out the best time to travel to Köln page.
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Köln in May average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  22° | 2  16° | 3  15° | 4 19° | |||
| 5 18° | 6 17° | 7 19° | 8 17° | 9 18° | 10  18° | 11 20° |
| 12 21° | 13 21° | 14 23° | 15 19° | 16 15° | 17 16° | 18 16° |
| 19  19° | 20 19° | 21 24° | 22 20° | 23 19° | 24 14° | 25 20° |
| 26  21° | 27 21° | 28 21° | 29  19° | 30 18° | 31 22° |
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Temperatures trend during May in Köln
May weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Moderate rain at times | 22° /9° | 3.3 mm | 5 | |
| 2 May | Patchy rain possible | 16° /7° | 2.1 mm | 4 | |
| 3 May | Overcast | 15° /5° | 7.3 mm | 4 | |
| 4 May | Overcast | 19° /6° | 0.2 mm | 5 | |
| 5 May | Moderate or heavy rain shower | 18° /9° | 2.7 mm | 4 | |
| 6 May | Patchy rain possible | 17° /9° | 7.6 mm | 4 | |
| 7 May | Moderate rain at times | 19° /11° | 6 mm | 4 | |
| 8 May | Moderate rain at times | 17° /10° | 4.4 mm | 4 | |
| 9 May | Moderate or heavy rain shower | 18° /10° | 11 mm | 5 | |
| 10 May | Heavy rain at times | 18° /9° | 6 mm | 4 | |
| 11 May | Patchy rain possible | 20° /9° | 1.6 mm | 5 | |
| 12 May | Moderate or heavy rain shower | 21° /11° | 3.6 mm | 5 | |
| 13 May | Moderate rain at times | 21° /11° | 1.7 mm | 5 | |
| 14 May | Patchy rain possible | 23° /10° | 0.3 mm | 6 | |
| 15 May | Moderate rain at times | 19° /11° | 1.9 mm | 5 | |
| 16 May | Patchy rain possible | 15° /9° | 4.3 mm | 4 | |
| 17 May | Patchy rain possible | 16° /8° | 4.7 mm | 4 | |
| 18 May | Overcast | 16° /7° | 2.8 mm | 4 | |
| 19 May | Partly cloudy | 19° /8° | 2.9 mm | 5 | |
| 20 May | Patchy rain possible | 19° /10° | 1.2 mm | 5 | |
| 21 May | Patchy rain possible | 24° /11° | 5.9 mm | 5 | |
| 22 May | Moderate or heavy rain shower | 20° /13° | 6.1 mm | 5 | |
| 23 May | Patchy rain possible | 19° /9° | 1.1 mm | 5 | |
| 24 May | Patchy rain possible | 14° /9° | 4.5 mm | 3 | |
| 25 May | Partly cloudy | 20° /8° | 0.3 mm | 5 | |
| 26 May | Sunny | 21° /8° | 2.4 mm | 6 | |
| 27 May | Overcast | 21° /8° | 3.1 mm | 5 | |
| 28 May | Partly cloudy | 21° /9° | 2.8 mm | 5 | |
| 29 May | Cloudy | 19° /10° | 10 mm | 5 | |
| 30 May | Partly cloudy | 18° /9° | 4.7 mm | 5 | |
| 31 May | Sunny | 22° /8° | 0.4 mm | 6 | |
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Guide for Köln in May
In May, Köln, Germany experiences a transition from spring to early summer, bringing about pleasant weather conditions. At the beginning of the month, the average temperature hovers around 13°, with mild and comfortable conditions.
As the month progresses, temperatures gradually rise, reaching an average of 18° by the end of May. The city experiences longer daylight hours, providing ample opportunity for outdoor activities and sightseeing.
In terms of precipitation, Köln sees moderate rainfall throughout May, with occasional showers and overcast skies. However, the overall amount of rainfall is relatively low, allowing for enjoyable outdoor excursions.
Travelers can expect the occasional drizzle, so it's advisable to pack an umbrella or light raincoat.
Overall, May in Köln offers favorable weather for exploring the city's numerous attractions, including the iconic Cologne Cathedral, picturesque Old Town, and vibrant riverside promenades. The pleasant temperatures and manageable rainfall make it an ideal time to visit this historic city.
Köln in May - FAQ
What to pack to Köln in May?
As you prepare for your trip to Köln in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Köln, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
May rainfall patterns in Köln
UV exposure in Köln during May
Quick links
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