July Weather in Grimsby, Canada

Last updated: June 18, 2025

In July, the average temperature in Grimsby, Canada is a pleasant 23°C (73°F). While you can expect the minimum to drop to 16°C (61°F), it can also soar to a maximum of 31°C (89°F). Be prepared for some rain, as 88 mm (3.5 in) of precipitation typically falls over 11 days, contributing to an average humidity of 77%.

July Temperature in Grimsby

In July in Grimsby, the average temperature is 23°C (73°F). Maximums can reach 31°C (89°F) and minimums can be as low as 16°C (61°F). This pleasant weather makes Grimsby an ideal destination for outdoor activities and exploring the local attractions.

July Weather in Grimsby: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Grimsby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grimsby, July typically has an average temperature of 23°C (73°F), with highs reaching up to 31°C (89°F) and lows dropping to around 16°C (61°F).

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

July Precipitation in Grimsby

In Grimsby in July, the total precipitation amount is 88 mm (3.5 in) spread over 11 days.

July Precipitation Trends in Grimsby

The chart displays monthly precipitation patterns in Grimsby, 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 Grimsby, July typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Grimsby

In Grimsby in July, humidity is 77%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable but bearable. It's essential to stay hydrated and take frequent breaks to enjoy the sights while avoiding overheating.

July Average Humidity in Grimsby

This chart illustrates the average monthly humidity levels in Grimsby, 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 Grimsby is approximately 77%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Grimsby

In Grimsby in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Grimsby.

Maximum UV Index Levels in Grimsby for July

The chart shows the monthly maximum UV Index (UVI) for Grimsby 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 Grimsby typically reaches 9, which falls under the very high exposure category.

Data source: Grimsby 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 Grimsby Compares to Other Months

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

This table compares monthly weather conditions in Grimsby, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	75 mm (3.0 inches)	91%	low
February Weather	-2°C (29°F)	83 mm (3.3 inches)	91%	moderate
March Weather	1°C (35°F)	69 mm (2.7 inches)	88%	moderate
April Weather	6°C (43°F)	115 mm (4.5 inches)	88%	very high
May Weather	12°C (53°F)	98 mm (3.9 inches)	82%	very high
June Weather	18°C (65°F)	78 mm (3.1 inches)	79%	very high
July Weather	23°C (73°F)	88 mm (3.5 inches)	77%	very high
August Weather	22°C (72°F)	76 mm (3.0 inches)	72%	very high
September Weather	19°C (66°F)	65 mm (2.6 inches)	76%	high
October Weather	13°C (56°F)	115 mm (4.5 inches)	83%	moderate
November Weather	5°C (42°F)	83 mm (3.3 inches)	88%	moderate
December Weather	1°C (35°F)	84 mm (3.3 inches)	87%	low