Aachen Climate by Month
Aachen, North Rhine-Westphalia, Germany
Mild summers and cool winters, with rain spread through the year.
Mild summers and cool winters, with rain spread through the year: that's Aachen's climate in short. Afternoon highs range from 42°F (6°C) in January to 74°F (23°C) in July, and January nights average 33°F (1°C). It gets 34 in (876 mm) of rain a year, spread across the months.
- Warmest month
- 74°F(23°C)
- Average high, July
- Coldest nights
- 33°F(1°C)
- Average low, January
- Rain per year
- 34 in(876 mm)
- No clear rainy season
- Humidity
- 74%
- Sunniest: June
Best and worst months in Aachen
Best for weatherJune to August are the best time for weather in Aachen: highs near 73°F (23°C) and about 3.2 in (81 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 44°F (6°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Aachen weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 42°F(6°C) | 33°F(1°C) | 3.0 in(75 mm) | 78% | 0.7 |
| FebFebruary | 44°F(7°C) | 34°F(1°C) | 3.0 in(75 mm) | 75% | 1.4 |
| MarMarch | 51°F(11°C) | 37°F(3°C) | 2.7 in(68 mm) | 71% | 2.5 |
| AprApril | 59°F(15°C) | 42°F(6°C) | 2.0 in(50 mm) | 64% | 4.1 |
| MayMay | 65°F(19°C) | 48°F(9°C) | 2.4 in(60 mm) | 70% | 4.9 |
| JunJuneBest | 71°F(22°C) | 53°F(12°C) | 2.9 in(74 mm) | 68% | 5.3 |
| JulJulyBest | 74°F(23°C) | 57°F(14°C) | 3.5 in(90 mm) | 70% | 5.0 |
| AugAugustBest | 74°F(23°C) | 57°F(14°C) | 3.1 in(80 mm) | 70% | 4.4 |
| SepSeptember | 67°F(19°C) | 52°F(11°C) | 3.0 in(75 mm) | 75% | 3.2 |
| OctOctober | 59°F(15°C) | 46°F(8°C) | 2.7 in(69 mm) | 82% | 1.8 |
| NovNovember | 49°F(10°C) | 40°F(4°C) | 2.8 in(71 mm) | 80% | 0.9 |
| DecDecember | 44°F(6°C) | 35°F(2°C) | 3.5 in(89 mm) | 85% | 0.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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