April Weather in Lahn, Germany

Last updated: August 23, 2025

In April, the average temperature in Lahn, Germany hovers around 9°C (49°F). Expect a chilly minimum of -4°C (25°F) and a warm maximum reaching 28°C (83°F). With an average humidity of 84% and 40 mm (1.6 in) of precipitation spread over 9 days, be prepared for a mix of cool and damp conditions.

April Temperature in Lahn

In April in Lahn, the average temperature is 9°C (49°F). Maximums can reach 28°C (83°F), while minimums can drop to as low as -4°C (25°F). Therefore, travelers should be prepared for a wide range of temperatures during their visit.

April Weather in Lahn: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Lahn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lahn, April typically has an average temperature of 9°C (49°F), with highs reaching up to 28°C (83°F) and lows dropping to around -4°C (25°F).

Data source: Temperature data for Lahn generated using information from the Copernicus Climate Change Service.

April Precipitation in Lahn

In Lahn in April, the precipitation amount is 40 mm (1.6 in) over the course of 9 days.

April Precipitation Trends in Lahn

The chart displays monthly precipitation patterns in Lahn, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Lahn, April typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Lahn

In Lahn in April, humidity is 84%. With an average temperature of 9°C (49°F), this humidity feels like a chilly embrace, making travel uncomfortable as the dampness seeps into your clothes and lingers in the air, leaving you feeling cool yet clammy.

April Average Humidity in Lahn

This chart illustrates the average monthly humidity levels in Lahn, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Lahn is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lahn

In Lahn in April, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Lahn.

Maximum UV Index Levels in Lahn for April

The chart shows the monthly maximum UV Index (UVI) for Lahn in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Lahn typically reaches 5, which falls under the moderate exposure category.

Data source: Lahn April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How April Weather in Lahn Compares to Other Months

Weather in Lahn varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Lahn, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Lahn, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (39°F)	66 mm (2.6 inches)	88%	low
February Weather	4°C (40°F)	69 mm (2.7 inches)	88%	low
March Weather	6°C (43°F)	71 mm (2.8 inches)	86%	moderate
April Weather	9°C (49°F)	40 mm (1.6 inches)	84%	moderate
May Weather	13°C (56°F)	61 mm (2.4 inches)	80%	high
June Weather	18°C (65°F)	69 mm (2.7 inches)	75%	very high
July Weather	18°C (65°F)	84 mm (3.3 inches)	75%	high
August Weather	19°C (66°F)	77 mm (3.0 inches)	75%	high
September Weather	15°C (59°F)	58 mm (2.3 inches)	83%	moderate
October Weather	12°C (53°F)	86 mm (3.4 inches)	86%	moderate
November Weather	7°C (45°F)	55 mm (2.2 inches)	87%	low
December Weather	5°C (41°F)	85 mm (3.4 inches)	86%	low