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September Weather in Catalina, Canada

Last updated: June 18, 2025

In September, the average temperature in Catalina, Canada hovers around 13°C (56°F). Expect minimums dipping to 5°C (42°F) and highs peaking at 21°C (69°F). During this period, prepare for approximately 114 mm (4.5 in) of precipitation spread over 13 days, with an average humidity level of 88%.

September Temperature in Catalina

In September in Catalina, the average temperature is 13°C (56°F). The maximum can reach 21°C (69°F), and the minimum can be as low as 5°C (42°F). This mild climate makes it a great time for travelers to enjoy outdoor activities and explore the beauty of Catalina.

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

The chart illustrates September temperature patterns in Catalina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Catalina, September typically has an average temperature of 13°C (56°F), with highs reaching up to 21°C (69°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec282529343947566155474032
Data source: Temperature data for Catalina 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 Catalina

In Catalina in September, the total precipitation amount is 114 mm (4.5 in), distributed over the course of 13 days.

September Precipitation Trends in Catalina

The chart displays monthly precipitation patterns in Catalina, 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 Catalina, September typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec96991031328786898311498114122
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Catalina

In Catalina in September, humidity is 88%. With an average temperature of 13°C (56°F), this humidity feels like a thick, warm blanket wrapping around you, making outdoor adventures sticky and challenging.

September Average Humidity in Catalina

This chart illustrates the average monthly humidity levels in Catalina, 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 Catalina is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%87%88%90%89%86%89%90%88%87%85%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Catalina

In Catalina in September, 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 Catalina, you can refer to this Hourly UV Index in Catalina.

Maximum UV Index Levels in Catalina for September

The chart shows the monthly maximum UV Index (UVI) for Catalina 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 Catalina typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356810876421
Data source: Catalina 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 Catalina Compares to Other Months

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

This table compares monthly weather conditions in Catalina, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)96 mm (3.8 inches)85%low
February Weather-4°C (25°F)99 mm (3.9 inches)87%moderate
March Weather-2°C (29°F)103 mm (4.0 inches)88%moderate
April Weather1°C (35°F)132 mm (5.2 inches)90%high
May Weather4°C (39°F)87 mm (3.4 inches)89%very high
June Weather9°C (48°F)85 mm (3.4 inches)86%very high
July Weather13°C (56°F)89 mm (3.5 inches)89%very high
August Weather16°C (61°F)82 mm (3.2 inches)90%high
September Weather13°C (56°F)114 mm (4.5 inches)88%high
October Weather8°C (47°F)98 mm (3.9 inches)87%moderate
November Weather4°C (40°F)114 mm (4.5 inches)85%low
December Weather0°C (33°F)122 mm (4.8 inches)85%low

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