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September Weather in Langley, United States

Last updated: June 24, 2025

In September, the average temperature in Langley, United States is a pleasant 15°C (60°F), with a minimum of 10°C (50°F) and a maximum reaching up to 26°C (80°F). Expect 85 mm (3.3 in) of precipitation over approximately 13 days, and be prepared for an average humidity of 74%. Enjoy the unique climate that Langley has to offer!

September Temperature in Langley

In September in Langley, the average temperature is 15°C (60°F). Maximums can reach 26°C (80°F), and minimums can be as low as 10°C (50°F). This mild climate makes it an ideal time for travelers looking to explore comfortably.

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

The chart illustrates September temperature patterns in Langley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Langley, September typically has an average temperature of 15°C (60°F), with highs reaching up to 26°C (80°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec444245495559626460534844
Data source: Temperature data for Langley 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 Langley

In Langley in September, the precipitation amount is 85 mm (3.3 in) spread over 13 days.

September Precipitation Trends in Langley

The chart displays monthly precipitation patterns in Langley, 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 Langley, September typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec167152119956766293085140186186
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Langley

In Langley in September humidity is 74%. With an average temperature of 15°C (60°F), this humidity feels like a warm embrace that can make outdoor activities feel slightly stifling, so travelers should be prepared to hydrate frequently and take breaks in the shade.

September Average Humidity in Langley

This chart illustrates the average monthly humidity levels in Langley, 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 Langley is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%85%83%84%84%82%73%74%83%86%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Langley

In Langley in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Langley.

Maximum UV Index Levels in Langley for September

The chart shows the monthly maximum UV Index (UVI) for Langley 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 Langley typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987521
Data source: Langley 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 Langley Compares to Other Months

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

This table compares monthly weather conditions in Langley, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)167 mm (6.6 inches)86%low
February Weather5°C (42°F)152 mm (6.0 inches)84%moderate
March Weather7°C (46°F)119 mm (4.7 inches)85%moderate
April Weather10°C (49°F)95 mm (3.8 inches)83%high
May Weather13°C (55°F)67 mm (2.7 inches)84%very high
June Weather15°C (59°F)66 mm (2.6 inches)84%very high
July Weather17°C (63°F)29 mm (1.1 inches)82%very high
August Weather18°C (64°F)30 mm (1.2 inches)73%very high
September Weather15°C (60°F)85 mm (3.3 inches)74%high
October Weather12°C (53°F)140 mm (5.5 inches)83%moderate
November Weather9°C (48°F)186 mm (7.3 inches)86%low
December Weather7°C (44°F)186 mm (7.3 inches)87%low

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