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September Weather in Frethun, France

Last updated: August 23, 2025

In September, the average temperature in Frethun, France hovers around 17°C (62°F), with lows dipping to 11°C (51°F) and highs reaching up to 23°C (75°F). Expect some rain, with a total precipitation of 65 mm (2.6 in) spread over roughly 11 days. The atmosphere is quite humid, with an average humidity level of 80%.

September Temperature in Frethun

In September in Frethun, the average temperature is 17°C (62°F). Maximum temperatures can reach 23°C (75°F), while minimums can drop to 11°C (51°F). This mild climate makes Frethun an ideal destination for outdoor activities and exploration during this time.

September Weather in Frethun: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Frethun, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Frethun, September typically has an average temperature of 17°C (62°F), with highs reaching up to 23°C (75°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec434446495460646562575046
Data source: Temperature data for Frethun 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.

September Precipitation in Frethun

In Frethun in September, the precipitation amount is 65 mm (2.6 in) over a span of 11 days.

September Precipitation Trends in Frethun

The chart displays monthly precipitation patterns in Frethun, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Frethun, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec75676328606248746511890133
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Frethun

In Frethun in September, humidity is 80%. With an average temperature of 17°C (62°F), this humidity feels like a heavy blanket wrapping around you, making travel sticky and uncomfortable, and often leaving you longing for a refreshing breeze.

September Average Humidity in Frethun

This chart illustrates the average monthly humidity levels in Frethun, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Frethun is approximately 80%, 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 September generated using information from the Copernicus Climate Change Service.

September UV Index in Frethun

In Frethun in September, 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 Frethun.

Maximum UV Index Levels in Frethun for September

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

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

This table compares monthly weather conditions in Frethun, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)75 mm (2.9 inches)91%low
February Weather7°C (44°F)67 mm (2.6 inches)89%low
March Weather8°C (46°F)63 mm (2.5 inches)86%moderate
April Weather9°C (49°F)28 mm (1.1 inches)85%moderate
May Weather12°C (54°F)60 mm (2.4 inches)82%high
June Weather16°C (60°F)62 mm (2.4 inches)81%very high
July Weather18°C (64°F)48 mm (1.9 inches)76%very high
August Weather18°C (65°F)74 mm (2.9 inches)73%high
September Weather17°C (62°F)65 mm (2.6 inches)80%moderate
October Weather14°C (57°F)118 mm (4.6 inches)89%moderate
November Weather10°C (50°F)90 mm (3.6 inches)92%low
December Weather8°C (47°F)133 mm (5.2 inches)92%low

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