Monthly climate guide
Aachen weather in January
January in Aachen is typically cold, with average daytime highs around 5°C (42°F) and night-time lows near 0°C (32°F). The month usually brings about 66 mm of rain (some rain) and is often cloudy. Daytime highs are 2°C cooler than December and about the same as February.
What stands out in January
- Pack for frost — nights average 0°C in January.
- It's one of the greyest months, with cloud cover near 83%.
- Seasonally, January counts as mid-winter in Aachen.
- Days and nights are close, only about 5°C apart.
January is typically Aachen's coolest month.
Avg high
5°C
42°F
Avg low
0°C
32°F
Rainfall
66 mm
some rain
Humidity
91%
relative
Sky
83%
cloud · often cloudy
Aachen weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 5°C / 42°F | 0°C / 32°F | 66 mm | 91% | 83% |
| February | 7°C / 44°F | 0°C / 31°F | 51 mm | 87% | 75% |
| March | 11°C / 52°F | 2°C / 35°F | 46 mm | 82% | 68% |
| April | 16°C / 60°F | 5°C / 40°F | 36 mm | 75% | 65% |
| May | 19°C / 66°F | 8°C / 46°F | 57 mm | 74% | 69% |
| June | 22°C / 72°F | 12°C / 53°F | 72 mm | 73% | 71% |
| July | 24°C / 76°F | 14°C / 57°F | 67 mm | 69% | 68% |
| August | 25°C / 76°F | 14°C / 57°F | 69 mm | 69% | 66% |
| September | 21°C / 70°F | 11°C / 51°F | 50 mm | 72% | 64% |
| October | 16°C / 61°F | 7°C / 45°F | 58 mm | 82% | 72% |
| November | 10°C / 50°F | 3°C / 38°F | 52 mm | 89% | 77% |
| December | 7°C / 45°F | 2°C / 35°F | 75 mm | 92% | 83% |
What to pack for January
- A proper insulated winter coat
- A hat, scarf and gloves
- Thermal base layers and warm, grippy boots for icy mornings
- A small travel umbrella, just in case
Is January a good time to visit Aachen?
Compare the months in the chart above to find your ideal window.
Best time to visit Aachen →Other Germany cities in January
Cite or embed this data
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Aachen weather in January. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/germany/aachen/january
<a href="https://weathercompare.eu/weather/germany/aachen/january">Aachen weather in January</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/germany/aachen" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Aachen weather in January"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/germany/aachen/january">Aachen weather in January</a> – WeatherCompare</p>
Aachen in January: quick answers
Is January a good time to visit Aachen?
January is cool in Aachen, with highs around 5°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Aachen in January?
Average highs are about 5°C (42°F) and average lows about 0°C (32°F), based on 10 years of daily data.
Does it rain a lot in Aachen in January?
Aachen typically gets around 66 mm of rain in January — some rain.
Figures are long-term averages for the area around Aachen (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.