Unterkulm Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Unterkulm.
Climate overview of Unterkulm
Unterkulm, Aargau, Switzerland, experiences significant temperature variation throughout the year. Summers bring daytime highs of 25°C (77°F) in July, while winters cool to 5°C (41°F) in January.
With around 1496 mm (59 in) of annual rain/snowfall, Unterkulm has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has warm summers and cold winters. The wettest month is July. The sunniest month is July, with 7.7 hours of sunshine per day on average.
Unterkulm Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Unterkulm - and find the best time to visit.
Monthly Temperature in Unterkulm
Depending on the time of the year, temperatures range from comfortable to chilly in Unterkulm. Average daytime temperatures reach a comfortable 25°C (77°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 5°C (41°F).
At night, temperatures range from around 14°C (57°F) in July to -1°C (30°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Unterkulm
Unterkulm has a relatively rain/snowy climate with high precipitation levels, averaging 1496 mm (59 in) of rain/snowfall annually. Unterkulm experiences moderate seasonal variation in rainfall, with monthly averages ranging from 171 mm (6.7 in) in July, the wettest month, and 92 mm (3.6 in) in February, the driest month. For more details, please visit our Unterkulm Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
Sunshine Hours in Unterkulm
Unterkulm can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 7.7 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Unterkulm by Month
The relative humidity is high throughout the year in Unterkulm.
The city experiences its highest humidity in November, reaching 85%. In April, the humidity drops to its lowest level at 67%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Unterkulm
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -1°C (30°F).
Frequently asked questions about the climate in Unterkulm
What is the best time to visit Unterkulm?
June, July, August and September typically offer the most optimal weather in Unterkulm. In contrast, January, February, March, November and December tend to have less optimal conditions. Unterkulm has warm summers and cold winters.
What temperatures can I expect in Unterkulm?
Daytime highs range from 5°C (41°F) in January to 25°C (77°F) in July. Nighttime lows range from -1°C (30°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Unterkulm get?
Annual rainfall is around 1496 mm (59 in). July is the wettest month with 171 mm (6.7 in), while February is the driest with 92 mm (3.6 in).
How sunny is Unterkulm?
Unterkulm receives around 1,705 hours of sunshine per year. July is the sunniest month with 230 hours, while December is the cloudiest with just 48 hours.
Unterkulm 3-Day Forecast
Unterkulm 3-Day Forecast
Unterkulm on the map
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