April Weather in Iserlohn, Germany

Last updated: August 23, 2025

In April, the average temperature in Iserlohn, Germany hovers around 10°C (50°F), but be prepared for a wide range with minimums dipping to -4°C (25°F) and maximums soaring to 27°C (82°F). This month sees about 42 mm (1.6 in) of precipitation over 9 days, with an average humidity of 83%. Be sure to pack accordingly!

April Temperature in Iserlohn

In April in Iserlohn, the average temperature is 10°C (50°F). The maximum can reach 27°C (82°F) and the minimum can be as low as -4°C (25°F). Be prepared for a wide range of temperatures when traveling, and pack accordingly.

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

The chart illustrates April temperature patterns in Iserlohn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iserlohn, April typically has an average temperature of 10°C (50°F), with highs reaching up to 27°C (82°F) and lows dropping to around -4°C (25°F).

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

April Precipitation in Iserlohn

In Iserlohn in April, the precipitation amount is 42 mm (1.6 in) over the course of 9 days.

April Precipitation Trends in Iserlohn

The chart displays monthly precipitation patterns in Iserlohn, 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 Iserlohn, April typically receives around 42 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 Iserlohn

In Iserlohn in April, humidity is 83%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration less comfortable and prompting visitors to seek cozy indoor activities.

April Average Humidity in Iserlohn

This chart illustrates the average monthly humidity levels in Iserlohn, 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 Iserlohn is approximately 83%, 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 Iserlohn

In Iserlohn 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 Iserlohn.

Maximum UV Index Levels in Iserlohn for April

The chart shows the monthly maximum UV Index (UVI) for Iserlohn 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 Iserlohn typically reaches 5, which falls under the moderate exposure category.

Data source: Iserlohn 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 Iserlohn Compares to Other Months

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

This table compares monthly weather conditions in Iserlohn, 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 (38°F)	80 mm (3.1 inches)	92%	low
February Weather	4°C (40°F)	82 mm (3.2 inches)	90%	low
March Weather	6°C (44°F)	84 mm (3.3 inches)	87%	moderate
April Weather	10°C (50°F)	42 mm (1.6 inches)	83%	moderate
May Weather	13°C (56°F)	73 mm (2.9 inches)	76%	high
June Weather	18°C (65°F)	67 mm (2.6 inches)	74%	very high
July Weather	19°C (66°F)	93 mm (3.7 inches)	74%	very high
August Weather	19°C (66°F)	80 mm (3.1 inches)	75%	high
September Weather	15°C (59°F)	63 mm (2.5 inches)	82%	moderate
October Weather	12°C (53°F)	91 mm (3.6 inches)	88%	moderate
November Weather	7°C (44°F)	57 mm (2.3 inches)	90%	low
December Weather	5°C (40°F)	102 mm (4.0 inches)	92%	low