The best time to book a flight to Cologne with Ryanair is 87 days before departure. On average, fares are higher if you book 2 days before departure.
For Economy class flights, the cheapest month to fly this route is September. The most expensive months are December and August.
In terms of precipitation, rainfall in Cologne ranges from 52.0 - 90.0 inches per month. June is typically the wettest month, when rainfall can reach 90.0 mm. February is typically the driest time to visit Cologne when rainfall is around 52.0 mm.
If weather is an important factor for your trip to Cologne, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).
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