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April Weather in Lille, Belgium

Last updated: August 22, 2025

In Lille, Belgium, the average temperature in April hovers around 10°C (51°F). Expect a range of conditions, with minimum temperatures dipping to -4°C (26°F) and highs reaching up to 28°C (83°F). During this month, precipitation totals about 38 mm (1.5 in) across approximately 8 days, while the air remains quite humid at an average of 85%.

April Temperature in Lille

In April in Lille, the average temperature is 10°C (51°F). Maximum temperatures can reach 28°C (83°F), while the minimum can drop as low as -4°C (26°F). Be prepared for a wide range of temperatures when traveling to Lille this April.

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

The chart illustrates April temperature patterns in Lille, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lille, April typically has an average temperature of 10°C (51°F), with highs reaching up to 28°C (83°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec394245505765666660544542
Data source: Temperature data for Lille 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 Lille

In Lille in April, the total precipitation amount is 38 mm (1.5 in), spread over 8 days.

April Precipitation Trends in Lille

The chart displays monthly precipitation patterns in Lille, 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 Lille, April typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec657272386566777856845793
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Lille

In Lille in April, humidity is 85%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill enveloping you, making travel quite uncomfortable as your clothes cling to your skin and the air feels heavy, often leaving you longing for a dry, warmer environment.

April Average Humidity in Lille

This chart illustrates the average monthly humidity levels in Lille, 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 Lille is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%85%82%82%80%76%82%89%92%92%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lille

In Lille 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 Lille.

Maximum UV Index Levels in Lille for April

The chart shows the monthly maximum UV Index (UVI) for Lille 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 Lille typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Lille 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 Lille Compares to Other Months

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

This table compares monthly weather conditions in Lille, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)65 mm (2.5 inches)91%low
February Weather5°C (42°F)72 mm (2.8 inches)89%low
March Weather7°C (45°F)72 mm (2.8 inches)87%moderate
April Weather10°C (51°F)38 mm (1.5 inches)85%moderate
May Weather14°C (57°F)65 mm (2.6 inches)82%high
June Weather19°C (66°F)66 mm (2.6 inches)82%very high
July Weather19°C (67°F)77 mm (3.0 inches)80%very high
August Weather19°C (66°F)78 mm (3.1 inches)76%high
September Weather16°C (60°F)56 mm (2.2 inches)82%moderate
October Weather12°C (55°F)84 mm (3.3 inches)89%moderate
November Weather7°C (46°F)57 mm (2.2 inches)92%low
December Weather6°C (42°F)93 mm (3.7 inches)92%low

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