Cologne and Stuttgart have similar daytime temperatures, Cologne has 1.1°C (2°F) warmer nights, and both get similar annual rainfall.
Cologne is at its warmest in August and coolest in January, while Stuttgart peaks in August and bottoms out in January. Month for month, Cologne is the warmer of the two in 7 of 11 months.
Both collect a similar amount of rain over the year — 822 mm (32.4 in) in Cologne and 811 mm (31.9 in) in Stuttgart. The most comfortable time to visit is June, July and August in Cologne and June, July and August in Stuttgart.
| Cologne | Metric | Stuttgart |
|---|---|---|
| 🌡️ Temperature | ||
| 21.1°C | 🌡️Average daytime high | 21.5°C |
| 0°C | 🌙Average nighttime low | -1.1°C |
| August | 🔥Hottest month | August |
| January | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 822 mm | 🌧️Annual rainfall | 811 mm |
| December | ☔Wettest month | May |
| April | 🏜️Driest month | February |
| 💨 Climate | ||
| 82% | 💧Average humidity | 81% |
| 3 m/s | 💨Average wind speed | 2.6 m/s |
Overnight, Cologne typically falls to around 0°C (32°F) while Stuttgart settles near -1.1°C (30°F).
Cologne is hottest in August and coldest in January, whereas Stuttgart peaks in August and is coolest in January.
Cologne sees the most rain in December and the least in April; Stuttgart is wettest in May and driest in February.
Cologne feels the more humid of the two, averaging 82% relative humidity against 81%.
For Stuttgart, the pick of the year is June, July and August.
Month by month, here is the coldest night, the average day and the hottest afternoon each city can expect. Switch Compare to read rainfall, humidity, wind or solar instead, and Period to move between the long-term 45-year average and any single year — the shading is a quick warm-to-cool guide.
| Month | Cologne | Stuttgart | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | -8.2 | 1.1❄️ | 10.5 | -10.5 | -0.4❄️ | 9.8 |
| February | -7.4 | 2.2 | 11.9 | -9.3 | 1.3 | 11.8 |
| March | -4 | 6.5 | 16.9 | -5.4 | 5.9 | 17.3 |
| April | -2.2 | 9.6 | 21.4 | -2.9 | 9.4 | 21.8 |
| May | 2.1 | 13.7 | 25.2 | 2.1 | 13.9 | 25.7 |
| June | 6.1 | 17.7 | 29.2 | 6.4 | 18.1 | 29.7 |
| July | 8.9 | 20.2🔥 | 31.6 | 9 | 20.6🔥 | 32.2 |
| August | 8.6 | 20.1 | 31.7 | 8.5 | 20.4 | 32.4 |
| September | 5.4 | 16.2 | 27 | 4.4 | 16.1 | 27.9 |
| October | 0.6 | 11.2 | 21.7 | -0.6 | 11.2 | 22.9 |
| November | -3.2 | 6.1 | 15.3 | -4.9 | 5.4 | 15.6 |
| December | -6.8 | 2.2 | 11.2 | -9.4 | 0.6 | 10.5 |
| Annual Avg | 0 | 10.6 | 21.1 | -1 | 10.2 | 21.5 |
Min / mean / max temperature (°C). 🔥 marks each city's hottest month, ❄️ its coldest; shading runs cool blue to warm red.
The same figures plotted out, so the shape of a typical year is easier to see than in a grid. Where the two lines run close together Cologne and Stuttgart feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Cologne Stuttgart
See how Cologne and Stuttgart stack up against other cities. Swipe for more.
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Quick answers to the questions people ask most when comparing Cologne and Stuttgart — each drawn straight from the climate figures above.
Cologne and Stuttgart are about equally warm. Daytime highs average 21.1°C (70°F) in Cologne and 21.5°C (70.7°F) in Stuttgart, so neither is clearly the warmer choice over the year. Nights are milder in Cologne, with average lows of 0°C (32°F) versus -1.1°C (30°F).
Cologne is hottest in August, averaging highs of about 31.7°C (89°F), while Stuttgart peaks in August at around 32.4°C (90.2°F). That makes Stuttgart the hotter of the two at the height of summer.
Stuttgart gets colder. In its coldest month (January) overnight lows average about -10.5°C (13.2°F), compared with -8.2°C (17.2°F) at the low point of the year in Cologne.
They get a similar amount of rain over a year — about 822 mm (32.4 in) in Cologne and 811 mm (31.9 in) in Stuttgart. Cologne is wettest in December and driest in April; Stuttgart is wettest in May and driest in February.
Humidity is similar in both, averaging around 82% in Cologne and 81% in Stuttgart across the year.
The most comfortable months in Cologne are June, July and August, when average temperatures are at their mildest.
Stuttgart is at its most pleasant around June, July and August, based on the mildest average temperatures of the year.
Cologne is the warmer city in 7 of the 11 months of the year. The gap is widest in December, about 1.6°C (2.9°F), and narrowest in October, about 0°C (0°F).
Stuttgart has the bigger seasonal swing, about 21°C (37.8°F) between its coldest and hottest months versus 19.1°C (34.4°F) in Cologne — so Cologne has the steadier, more even climate.
Every figure on this page is calculated from NASA POWER satellite climate data spanning 1981–2025 (45 years). The averages describe the long-term climate of Cologne and Stuttgart, not a single year's weather or a short-range forecast.
