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April Weather in Lontzen, Belgium

Last updated: August 22, 2025

In April, the average temperature in Lontzen, Belgium hovers around 9°C (49°F). Expect chilly nights, with minimum temperatures dropping to a brisk -3°C (26°F), while daytime highs can reach a comfortable 27°C (81°F). With an average precipitation of 40 mm (1.6 in) spread over 10 days, and a notable humidity level of 84%, prepare for a mix of wet and dry spells during your stay.

April Temperature in Lontzen

In April in Lontzen, the average temperature is 9°C (49°F), with maximums reaching 27°C (81°F) and minimums dropping as low as -3°C (26°F). It's advisable to pack both warm and light clothing to prepare for the variable weather conditions while traveling.

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

The chart illustrates April temperature patterns in Lontzen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lontzen, April typically has an average temperature of 9°C (49°F), with highs reaching up to 27°C (81°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec374044495564656559534440
Data source: Temperature data for Lontzen generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Lontzen

In Lontzen in April, the precipitation amount is 40 mm (1.6 in) over a span of 10 days.

April Precipitation Trends in Lontzen

The chart displays monthly precipitation patterns in Lontzen, 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 Lontzen, April typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec7978874074889478648259112
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Lontzen

In Lontzen 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 Lontzen

This chart illustrates the average monthly humidity levels in Lontzen, 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 Lontzen is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%87%84%77%74%72%71%81%88%91%92%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lontzen

In Lontzen 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 Lontzen.

Maximum UV Index Levels in Lontzen for April

The chart shows the monthly maximum UV Index (UVI) for Lontzen 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 Lontzen typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Lontzen 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 Lontzen Compares to Other Months

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

This table compares monthly weather conditions in Lontzen, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)79 mm (3.1 inches)91%low
February Weather5°C (40°F)78 mm (3.1 inches)90%low
March Weather7°C (44°F)87 mm (3.4 inches)87%moderate
April Weather9°C (49°F)40 mm (1.6 inches)84%moderate
May Weather13°C (56°F)74 mm (2.9 inches)77%high
June Weather18°C (64°F)88 mm (3.4 inches)74%very high
July Weather19°C (66°F)94 mm (3.7 inches)72%very high
August Weather19°C (66°F)78 mm (3.1 inches)71%high
September Weather15°C (59°F)64 mm (2.5 inches)81%moderate
October Weather11°C (53°F)82 mm (3.2 inches)88%moderate
November Weather7°C (44°F)59 mm (2.3 inches)91%low
December Weather5°C (41°F)112 mm (4.4 inches)92%low

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