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September Weather in Marystown, Canada

Last updated: June 18, 2025

In Marystown, Canada, the average temperature for September hovers around 14°C (58°F). You can expect a minimum of 3°C (39°F) and a maximum of 22°C (73°F) throughout the month. With 108 mm (4.3 in) of precipitation spread across about 10 days, the region experiences a fairly moist climate, highlighted by an average humidity level of 88%.

September Temperature in Marystown

In September in Marystown, the average temperature is 14°C (58°F), with maximums reaching 22°C (73°F) and minimums dipping as low as 3°C (39°F). This pleasant climate makes it an ideal time for traveling and exploring the sights.

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

The chart illustrates September temperature patterns in Marystown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marystown, September typically has an average temperature of 14°C (58°F), with highs reaching up to 22°C (73°F) and lows dropping to around 3°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec282629364250596357484133
Data source: Temperature data for Marystown 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 Marystown

In Marystown in September, the total precipitation amount is 108 mm (4.3 in) spread over a duration of 10 days.

September Precipitation Trends in Marystown

The chart displays monthly precipitation patterns in Marystown, 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 Marystown, September typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec109114126110948811484109110140157
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Marystown

In Marystown in September humidity is 88%. With an average temperature of 14°C (58°F), this humidity feels like a warm, damp embrace, making travel a bit uncomfortable as you may find yourself constantly sticky and in need of refreshing breaks.

September Average Humidity in Marystown

This chart illustrates the average monthly humidity levels in Marystown, 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 Marystown is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%84%85%86%88%91%93%92%88%84%82%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Marystown

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

Maximum UV Index Levels in Marystown for September

The chart shows the monthly maximum UV Index (UVI) for Marystown 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 Marystown typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789886431
Data source: Marystown 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 Marystown Compares to Other Months

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

This table compares monthly weather conditions in Marystown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)109 mm (4.3 inches)83%low
February Weather-4°C (26°F)114 mm (4.5 inches)84%moderate
March Weather-2°C (29°F)126 mm (5.0 inches)85%moderate
April Weather2°C (37°F)110 mm (4.3 inches)86%high
May Weather5°C (42°F)94 mm (3.7 inches)88%very high
June Weather10°C (51°F)88 mm (3.5 inches)91%very high
July Weather15°C (59°F)114 mm (4.5 inches)93%very high
August Weather17°C (64°F)84 mm (3.3 inches)92%very high
September Weather14°C (58°F)108 mm (4.3 inches)88%high
October Weather9°C (49°F)110 mm (4.3 inches)84%moderate
November Weather5°C (41°F)140 mm (5.5 inches)82%moderate
December Weather1°C (33°F)157 mm (6.2 inches)81%low

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