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October Weather in Grande-Synthe, France

Last updated: August 23, 2025

In October, the average temperature in Grande-Synthe, France hovers around 13°C (56°F), with a minimum dipping to 3°C (38°F) and a maximum reaching up to 25°C (77°F). Expect about 80 mm (3.2 in) of precipitation spread over 13 days, contributing to a high average humidity of 89%. Prepare for a mix of cool and wet conditions!

October Temperature in Grande-Synthe

In October in Grande-Synthe, the average temperature is 13°C (56°F). The maximum can reach 25°C (77°F), while the minimum can drop as low as 3°C (38°F). This makes it a great time to explore Grande-Synthe while enjoying mild weather and suitable conditions for outdoor activities.

October Weather in Grande-Synthe: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Grande-Synthe, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grande-Synthe, October typically has an average temperature of 13°C (56°F), with highs reaching up to 25°C (77°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec424346505663666661554844
Data source: Temperature data for Grande-Synthe 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.

October Precipitation in Grande-Synthe

In Grande-Synthe in October, the precipitation amount is 80 mm (3.2 in) spread over 13 days.

October Precipitation Trends in Grande-Synthe

The chart displays monthly precipitation patterns in Grande-Synthe, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Grande-Synthe, October typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec605458325964507146805593
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Grande-Synthe

In Grande-Synthe in October humidity is 89%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making outdoor travel feel heavy and uncomfortable.

October Average Humidity in Grande-Synthe

This chart illustrates the average monthly humidity levels in Grande-Synthe, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Grande-Synthe is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Grande-Synthe

In Grande-Synthe in October, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Grande-Synthe for better planning.

Maximum UV Index Levels in Grande-Synthe for October

The chart shows the monthly maximum UV Index (UVI) for Grande-Synthe in October, 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 October, the maximum UV index in Grande-Synthe typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Grande-Synthe October 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 October Weather in Grande-Synthe Compares to Other Months

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

This table compares monthly weather conditions in Grande-Synthe, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)60 mm (2.4 inches)91%low
February Weather6°C (44°F)54 mm (2.1 inches)89%low
March Weather8°C (46°F)58 mm (2.3 inches)86%moderate
April Weather10°C (51°F)32 mm (1.2 inches)85%moderate
May Weather13°C (56°F)59 mm (2.3 inches)82%high
June Weather17°C (63°F)64 mm (2.5 inches)81%very high
July Weather19°C (66°F)50 mm (1.9 inches)76%very high
August Weather19°C (66°F)71 mm (2.8 inches)73%high
September Weather16°C (61°F)46 mm (1.8 inches)80%moderate
October Weather13°C (56°F)80 mm (3.2 inches)89%moderate
November Weather9°C (48°F)55 mm (2.1 inches)92%low
December Weather7°C (45°F)93 mm (3.7 inches)92%low

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