January in Cologne — off-season conditions
Hardest · 4.3/10January averages 4°C (38°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rainfall runs 98 mm, so plan one flexible day in three; you still get about 8 days with 6+ hours of sunshine and 8.5 hours of daylight.
It scores 4.3/10 here, 12th of 12 months, against 8.9/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.
Flexible dates? August scores 4.6 points higher here — enough to change the trip.
February in Cologne — middling scores, decent value
Trade-offs · 6.2/10February averages 6°C (42°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 61 mm, so plan one flexible day in three; you still get about 14 days with 6+ hours of sunshine and 10 hours of daylight.
It scores 6.2/10 here, 9th of 12 months, against 8.9/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Flexible dates? August scores 2.7 points higher here — enough to change the trip.
March in Cologne — reliably good (7th best month)
Good · 7.2/10Expect 7°C (45°F) in March. A good month for city streets, viewpoints and long meals; leave swimming for another season.
Budget for roughly 69 mm of rain this month — a flexible day or two helps — with about 21 days with 6+ hours of sunshine and 11.9 hours of daylight to work around it.
That is 7.2/10 on the same scale — 7th of 12 months, versus 8.9/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
If your dates are flexible, August is materially better in Cologne — 1.7 points higher on the same scale.
April in Cologne: strong conditions, 6th of 12
Good · 7.8/10April averages 10°C (49°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 72 mm, so plan one flexible day in three; you still get about 22 days with 6+ hours of sunshine and 13.9 hours of daylight.
It scores 7.8/10 here, 6th of 12 months, against 8.9/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
May is one of the strongest months in Cologne (2nd)
Best window · 8.6/10Temperatures hover around 15°C (58°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 78 mm of rain this month — a flexible day or two helps — with about 28 days with 6+ hours of sunshine and 15.6 hours of daylight to work around it.
On our climate-comfort scale this is one of the strongest months of the year for Cologne at 8.6/10 (2nd of 12), just behind August at 8.9/10.
Budget for mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
June in Cologne — one of the year's strongest windows (3rd)
Best window · 8.6/10June averages 19°C (67°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Rainfall runs 91 mm, so plan one flexible day in three; you still get about 27 days with 6+ hours of sunshine and 16.5 hours of daylight.
A 8.6/10 puts this among the year's best months in Cologne (3rd of 12); only August scores higher, at 8.9/10.
Plan for mid-season pricing, with crowds are moderate.
Pack light clothing, a hat and real sun protection, a packable rain layer.
July in Cologne — reliably good (4th best month)
Good · 8.1/10July averages 19°C (67°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Monthly rainfall reaches 114 mm — wet for this destination — but about 27 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 8.1/10 here, 4th of 12 months, against 8.9/10 in the destination's best month.
Figure on peak pricing, with this is one of the busiest months here.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.
August in Cologne tops the year's climate scores
Best window · 8.9/10At 20°C (68°F) this is comfortable city weather in August, with sightseeing easiest before lunch and after the afternoon peak.
Budget for roughly 69 mm of rain this month — a flexible day or two helps — with about 28 days with 6+ hours of sunshine and 14.5 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Cologne at 8.9/10 — the reference point every other month on this page is measured against.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack light clothing, a hat and real sun protection, a packable rain layer.
September holds up well in Cologne — 5th best month
Good · 8/10Temperatures hover around 17°C (62°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 100 mm of rain this month — a flexible day or two helps — with about 26 days with 6+ hours of sunshine and 12.6 hours of daylight to work around it.
That is 8/10 on the same scale — 5th of 12 months, versus 8.9/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
October holds up well in Cologne — 8th best month
Good · 7.2/10October averages 13°C (55°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 81 mm, so plan one flexible day in three; you still get about 17 days with 6+ hours of sunshine and 10.7 hours of daylight.
It scores 7.2/10 here, 8th of 12 months, against 8.9/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Flexible dates? August scores 1.7 points higher here — enough to change the trip.
November in Cologne: mixed conditions, plan around the weather
Trade-offs · 5.5/10November averages 7°C (45°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 84 mm, so plan one flexible day in three; you still get about 11 days with 6+ hours of sunshine and 8.9 hours of daylight.
It scores 5.5/10 here, 10th of 12 months, against 8.9/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Flexible dates? August scores 3.4 points higher here — enough to change the trip.
December in Cologne: expect compromises
Hardest · 4.6/10Expect 5°C (41°F) in December. A good month for city streets, viewpoints and long meals; leave swimming for another season.
Budget for roughly 86 mm of rain this month — a flexible day or two helps — with about 7 days with 6+ hours of sunshine and 8 hours of daylight to work around it.
That is 4.6/10 on the same scale — 11th of 12 months, versus 8.9/10 for the best month here.
Expect low-season pricing, and crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
If your dates are flexible, August is materially better in Cologne — 4.3 points higher on the same scale.
