Live decision for Munich. Updated every 30 minutes.
Locating you…
—
Today's windows
Updated: — ·
Enter your city or postcode
—
Munich (München) sits at 520 metres in the Alpine foothills, giving it a cooler, cleaner climate than northern German cities and a distinctive atmospheric phenomenon: the Föhn. This warm, dry southerly wind can raise temperatures by 10–15°C in hours, bringing sudden warmth in any season and unusually clear skies where the Alps are visible from the city centre.
Föhn days are excellent ventilation opportunities — air quality is outstanding and the pressure inversions that normally trap urban pollution are broken. Munich has some of Germany's best outdoor air quality year-round (AQI typically 10–25), helped by its elevation, Alpine proximity, and Bavaria's strict environmental standards.
Bavarian winter ventilation follows the Stoßlüften tradition. The cold Alpine air (−5 to 5°C from November to March) is clean and dry — brief ventilation effectively refreshes indoor CO₂ without significant heat loss if done quickly. Munich's thick-walled building stock retains heat well between ventilation bursts.
In July, the warmest month in Munich, afternoons reach 24 °C on average and nights fall to 15 °C. The coolest air arrives between 04:00 and 07:00 (15 °C on average): that is when opening the windows cools the home fastest.
In January, the coldest month, air the rooms for 5–10 minutes around 15:00, the mildest hour (4 °C on average). Average humidity is 79%, so short, wide-open airing keeps condensation and mould away without losing much heat.
Fine particles (PM2.5) are usually lowest around 16:00 (8 µg/m³) and highest around 22:00 (11 µg/m³).
| Month | Avg high | Avg low | Humidity | Coolest hours | PM2.5 |
|---|---|---|---|---|---|
| January | 5 °C | -2 °C | 79% | 07:00–10:00 | 11 |
| February | 8 °C | -0 °C | 76% | 07:00–10:00 | 13 |
| March | 11 °C | 1 °C | 72% | 06:00–09:00 | 12 |
| April | 13 °C | 4 °C | 71% | 05:00–08:00 | 9 |
| May | 18 °C | 8 °C | 71% | 04:00–07:00 | 8 |
| June | 24 °C | 14 °C | 68% | 04:00–07:00 | 8 |
| July | 24 °C | 15 °C | 71% | 04:00–07:00 | 7 |
| August | 24 °C | 14 °C | 75% | 05:00–08:00 | 9 |
| September | 20 °C | 11 °C | 80% | 05:00–08:00 | 9 |
| October | 16 °C | 7 °C | 82% | 06:00–09:00 | 10 |
| November | 8 °C | 2 °C | 85% | 06:00–09:00 | 11 |
| December | 5 °C | -1 °C | 84% | 07:00–10:00 | 13 |
Data: Open-Meteo historical archive, hourly averages 2021–2025 (air quality 2023–2025), local time.
How to air your home in winter in Munich without condensation and mould →
In Munich, the best ventilation times are typically early morning (5–8 AM) and late evening (after sunset) when outdoor temperatures drop below indoor levels.
Yes, in most weather conditions. Open windows can drop indoor temperature by 2–5°C in 30 minutes if outdoor air is cooler. Check the live recommendation above for tonight.
Above 80% humidity, opening windows can make indoor air feel sticky. Combine with dehumidifier or wait for drier hours.