The honest answer to when you should fly Cologne to Charleroi is mostly about weather and demand at the far end. On three years of daily observations at the arrival airport, Jun-Sep gives the most comfortable combination of temperature and rainfall in Charleroi.
Averages below come from three full years of daily readings at Charleroi’s main airport, not from a seasonal generalisation. The warmest month is July (average high 24°C), the coolest is January (average low 1°C), and the wettest is October (101 mm).
| Month | Avg high | Avg low | Rainfall | Wet days | Cologne high |
|---|---|---|---|---|---|
| January | 5°C | 1°C | 97 mm | 13 | 5°C |
| February | 9°C | 4°C | 90 mm | 16 | 9°C |
| March | 12°C | 4°C | 54 mm | 11 | 13°C |
| April | 16°C | 6°C | 37 mm | 10 | 16°C |
| May | 19°C | 10°C | 100 mm | 15 | 20°C |
| June good | 22°C | 13°C | 66 mm | 14 | 23°C |
| July good | 24°C | 15°C | 63 mm | 12 | 24°C |
| August good | 24°C | 15°C | 46 mm | 13 | 25°C |
| September good | 20°C | 12°C | 72 mm | 13 | 21°C |
| October | 16°C | 10°C | 101 mm | 14 | 16°C |
| November | 10°C | 5°C | 90 mm | 15 | 10°C |
| December | 8°C | 3°C | 72 mm | 12 | 7°C |
Climate data: Open-Meteo reanalysis archive.
Charleroi keeps the same clock time as Cologne, so there is no adjustment to plan for and the date you choose is purely about weather and price.
We publish observed fares for this route when we have them, and say nothing when we do not — there is no estimate on this page. What holds regardless of the route:
Midweek departures are consistently cheaper than Friday and Sunday on most routes, because that is where demand sits rather than because of any pricing trick. Where we have observed fares for Cologne–Charleroi, the weekday breakdown appears further down this page; where we do not, we leave it out rather than estimate it.
Nightly rates in Charleroi for a sample two-night stay for two adults from 29 Sep 2026, cheapest first. Rates move with your dates — check availability for a live quote.
