When to go
The Best Time to Visit Cologne
Month-by-month climate data for Cologne, Germany — daily highs and lows, rain days, and an honest verdict for every month of the year.
Timing is the first real decision when planning Cologne— it drives crowds, prices and what's actually open. Here's how the year breaks down so you can pick dates that fit the trip you're building, not just the weather.
May–September, December. Long summer days on the Rhine; December brings the famous Christmas markets in the cathedral shadow.
Warmest in Cologne: Aug (25°C / 77°F) · Coolest: Jan (6°C / 43°F) · Wettest: Dec (~17 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
Cologne climate, month by month
January
6° / 2°C
~14 rain days
Tough
February
10° / 3°C
~15 rain days
Fair
March
12° / 3°C
~14 rain days
Fair
April
14° / 5°C
~12 rain days
Good
May
19° / 9°C
~14 rain days
Good
June
23° / 14°C
~12 rain days
Excellent
July
24° / 15°C
~14 rain days
Good
August
25° / 16°C
~12 rain days
Excellent
September
21° / 13°C
~11 rain days
Excellent
October
17° / 9°C
~15 rain days
Good
November
11° / 5°C
~13 rain days
Fair
December
7° / 3°C
~17 rain days
Tough
Plan around it
Dates locked in? Start from the Cologne travel guide or jump straight to a 3-day, 5-day or 7-day itinerary.