June Weather in Oakville, United States

Last updated: June 24, 2025

In Oakville, United States, the average temperature in June hovers around 15°C (59°F). However, prepare for a range of weather, as temperatures can dip to a chilly 4°C (40°F) or soar to a sweltering 42°C (108°F). Rainfall makes its presence felt with an average of 57 mm (2.2 in) over 8 days, and humidity stays high at 84%, creating a uniquely vibrant climate.

June Temperature in Oakville

In June in Oakville, the average temperature is 15°C (59°F). Maximums can reach 42°C (108°F), while minimums can drop as low as 4°C (40°F). Travelers should be prepared for a wide temperature range and pack accordingly.

June Weather in Oakville: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Oakville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oakville, June typically has an average temperature of 15°C (59°F), with highs reaching up to 42°C (108°F) and lows dropping to around 4°C (40°F).

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

June Precipitation in Oakville

In Oakville in June, the precipitation amount is 57 mm (2.2 in) over the course of 8 days.

June Precipitation Trends in Oakville

The chart displays monthly precipitation patterns in Oakville, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Oakville, June typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

June Humidity in Oakville

In Oakville in June, humidity is 84%. With an average temperature of 15°C (59°F), this humidity feels like an oppressive blanket wrapping around you, making it challenging to enjoy outdoor activities and travel comfortably.

June Average Humidity in Oakville

This chart illustrates the average monthly humidity levels in Oakville, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Oakville is approximately 84%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Oakville

In Oakville in June, 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 Oakville.

Maximum UV Index Levels in Oakville for June

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

Data source: Oakville June 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 June Weather in Oakville Compares to Other Months

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

This table compares monthly weather conditions in Oakville, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	205 mm (8.1 inches)	86%	low
February Weather	4°C (40°F)	171 mm (6.7 inches)	84%	moderate
March Weather	6°C (44°F)	142 mm (5.6 inches)	85%	moderate
April Weather	9°C (49°F)	122 mm (4.8 inches)	83%	high
May Weather	12°C (55°F)	75 mm (2.9 inches)	84%	very high
June Weather	15°C (59°F)	57 mm (2.2 inches)	84%	very high
July Weather	17°C (63°F)	11 mm (0.4 inches)	82%	very high
August Weather	18°C (64°F)	13 mm (0.5 inches)	73%	very high
September Weather	15°C (60°F)	90 mm (3.5 inches)	74%	high
October Weather	10°C (50°F)	137 mm (5.4 inches)	83%	moderate
November Weather	7°C (45°F)	198 mm (7.8 inches)	86%	moderate
December Weather	4°C (40°F)	210 mm (8.3 inches)	87%	low