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April Weather in Lannion, France

Last updated: August 23, 2025

In April, the average temperature in Lannion, France hovers around 10°C (51°F), with a minimum dipping to 4°C (40°F) and a maximum reaching up to 23°C (74°F). Expect about 50 mm (2.0 in) of precipitation spread across 9 days, while the air carries a notable average humidity of 84%. Stay prepared for a mix of cool and mild conditions!

April Temperature in Lannion

In April in Lannion, the average temperature is 10°C (51°F). Maximums can reach 23°C (74°F), and minimums can drop to as low as 4°C (40°F). This climate is ideal for travelers who enjoy mild weather and exploring outdoor activities.

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

The chart illustrates April temperature patterns in Lannion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lannion, April typically has an average temperature of 10°C (51°F), with highs reaching up to 23°C (74°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec474748505459626261575249
Data source: Temperature data for Lannion 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 Lannion

In Lannion in April, the precipitation amount is 50 mm (2.0 in) over the course of 9 days.

April Precipitation Trends in Lannion

The chart displays monthly precipitation patterns in Lannion, 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 Lannion, April typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec979678506875444757142109167
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Lannion

In Lannion in April humidity is 84%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill enveloping you, making even short distances feel burdensome and leaving you longing for a cozy indoor refuge while exploring the area.

April Average Humidity in Lannion

This chart illustrates the average monthly humidity levels in Lannion, 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 Lannion is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%85%84%81%77%63%71%76%89%90%90%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lannion

In Lannion in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Lannion, you can refer to this Hourly UV Index in Lannion.

Maximum UV Index Levels in Lannion for April

The chart shows the monthly maximum UV Index (UVI) for Lannion 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 Lannion typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Lannion 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 Lannion Compares to Other Months

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

This table compares monthly weather conditions in Lannion, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)97 mm (3.8 inches)89%low
February Weather8°C (48°F)96 mm (3.8 inches)88%moderate
March Weather9°C (49°F)78 mm (3.1 inches)85%moderate
April Weather10°C (51°F)50 mm (2.0 inches)84%high
May Weather12°C (55°F)68 mm (2.7 inches)81%very high
June Weather15°C (59°F)75 mm (2.9 inches)77%very high
July Weather17°C (62°F)44 mm (1.7 inches)63%very high
August Weather17°C (63°F)47 mm (1.9 inches)71%very high
September Weather16°C (61°F)57 mm (2.3 inches)76%high
October Weather14°C (57°F)142 mm (5.6 inches)89%moderate
November Weather11°C (52°F)109 mm (4.3 inches)90%low
December Weather10°C (50°F)167 mm (6.6 inches)90%low

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