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July Weather in Saint-Thomas, Canada

Last updated: June 18, 2025

In Saint-Thomas, Canada, the average temperature in July hovers around 22°C (71°F), with a minimum of 9°C (49°F) and a maximum reaching 35°C (95°F). Expect about 89 mm (3.5 in) of precipitation spread over 13 days, contributing to an average humidity of 76%. Enjoy the comfortable yet varied weather!

July Temperature in Saint-Thomas

In July in Saint-Thomas, the average temperature is 22°C (71°F). Maximums can reach 35°C (95°F), while minimums can drop to as low as 9°C (49°F). This makes Saint-Thomas an ideal destination for travelers looking to enjoy warm days and mild evenings.

July Weather in Saint-Thomas: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Saint-Thomas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Thomas, July typically has an average temperature of 22°C (71°F), with highs reaching up to 35°C (95°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec151827415665716960483321
Data source: Temperature data for Saint-Thomas 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.

July Precipitation in Saint-Thomas

In Saint-Thomas in July, the precipitation amount is 89 mm (3.5 in) distributed over 13 days.

July Precipitation Trends in Saint-Thomas

The chart displays monthly precipitation patterns in Saint-Thomas, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Saint-Thomas, July typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec8382851219695891046412411490
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Saint-Thomas

In Saint-Thomas in July, humidity is 76%. With an average temperature of 22°C (71°F), this humidity feels like traveling through a warm, dense mist that clings to your skin, making every step feel heavier and the air seem thicker, which can be quite draining for outdoor activities.

July Average Humidity in Saint-Thomas

This chart illustrates the average monthly humidity levels in Saint-Thomas, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Saint-Thomas is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Saint-Thomas

In Saint-Thomas in July, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Saint-Thomas.

Maximum UV Index Levels in Saint-Thomas for July

The chart shows the monthly maximum UV Index (UVI) for Saint-Thomas in July, 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 July, the maximum UV index in Saint-Thomas typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Saint-Thomas July 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 July Weather in Saint-Thomas Compares to Other Months

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

This table compares monthly weather conditions in Saint-Thomas, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (15°F)83 mm (3.3 inches)93%low
February Weather-8°C (18°F)82 mm (3.2 inches)92%moderate
March Weather-3°C (27°F)85 mm (3.4 inches)86%moderate
April Weather5°C (42°F)121 mm (4.8 inches)85%high
May Weather13°C (56°F)96 mm (3.8 inches)80%very high
June Weather19°C (66°F)95 mm (3.7 inches)74%very high
July Weather22°C (71°F)89 mm (3.5 inches)76%very high
August Weather20°C (69°F)104 mm (4.1 inches)75%very high
September Weather16°C (60°F)64 mm (2.5 inches)78%high
October Weather9°C (49°F)124 mm (4.9 inches)86%moderate
November Weather0°C (33°F)114 mm (4.5 inches)88%moderate
December Weather-6°C (21°F)90 mm (3.5 inches)89%low

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