September Weather in Mayo, Canada

Last updated: June 18, 2025

In September, the average temperature in Mayo, Canada hovers around 7°C (45°F). Temperatures can vary significantly, with a minimum of -5°C (23°F) and a maximum reaching 24°C (75°F). Expect about 46 mm (1.8 in) of precipitation over approximately 10 days, contributing to a high average humidity of 91%.

September Temperature in Mayo

In September in Mayo, the average temperature is 7°C (45°F), with maximums reaching up to 24°C (75°F) and minimums dropping as low as -5°C (23°F). This diverse range in temperatures makes it essential for travelers to pack layers suitable for both warm afternoons and chilly evenings.

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

The chart illustrates September temperature patterns in Mayo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mayo, September typically has an average temperature of 7°C (45°F), with highs reaching up to 24°C (75°F) and lows dropping to around -5°C (23°F).

Data source: Temperature data for Mayo generated using information from the Copernicus Climate Change Service.

September Precipitation in Mayo

In Mayo in September, the precipitation amount is 46 mm (1.8 in) over the course of 10 days.

September Precipitation Trends in Mayo

The chart displays monthly precipitation patterns in Mayo, 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 Mayo, September typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Mayo

In Mayo in September humidity is 91%. With an average temperature of 7°C (45°F), this humidity feels like a thick blanket wrapping around you, making it difficult to stay comfortable while traveling.

September Average Humidity in Mayo

This chart illustrates the average monthly humidity levels in Mayo, 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 Mayo is approximately 91%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mayo

In Mayo in September, 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 Mayo for better planning.

Maximum UV Index Levels in Mayo for September

The chart shows the monthly maximum UV Index (UVI) for Mayo 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 Mayo typically reaches 4, which falls under the moderate exposure category.

Data source: Mayo 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 Mayo Compares to Other Months

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

This table compares monthly weather conditions in Mayo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-22°C (-7°F)	15 mm (0.6 inches)	97%	low
February Weather	-23°C (-8°F)	15 mm (0.6 inches)	96%	low
March Weather	-13°C (10°F)	14 mm (0.5 inches)	93%	moderate
April Weather	-2°C (28°F)	18 mm (0.7 inches)	89%	moderate
May Weather	8°C (47°F)	45 mm (1.8 inches)	84%	moderate
June Weather	14°C (58°F)	62 mm (2.4 inches)	82%	high
July Weather	16°C (61°F)	60 mm (2.4 inches)	84%	high
August Weather	13°C (56°F)	67 mm (2.6 inches)	89%	moderate
September Weather	7°C (45°F)	46 mm (1.8 inches)	91%	moderate
October Weather	-2°C (30°F)	44 mm (1.7 inches)	97%	low
November Weather	-16°C (4°F)	33 mm (1.3 inches)	100%	low
December Weather	-20°C (-3°F)	29 mm (1.2 inches)	99%	low