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June Weather in Ottawa, United States

Last updated: June 24, 2025

In Ottawa, United States, the average temperature in June hovers around 22°C (72°F), with a minimum of 7°C (45°F) and a maximum reaching up to 35°C (94°F). Expect 122 mm (4.8 in) of precipitation spread over 13 days, contributing to an average humidity of 82%. Be prepared for a mix of warm days and refreshing rains!

June Temperature in Ottawa

In June, in Ottawa, the average temperature is 22°C (72°F). The maximum can reach 35°C (94°F), and the minimum can be as low as 7°C (45°F). It's the perfect time to visit if you enjoy warm weather along with the possibility of cooler evenings.

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

The chart illustrates June temperature patterns in Ottawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ottawa, June typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (94°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec293141506372767368574135
Data source: Temperature data for Ottawa 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.

June Precipitation in Ottawa

In Ottawa in June, the precipitation amount is 122 mm (4.8 in) recorded over a span of 13 days.

June Precipitation Trends in Ottawa

The chart displays monthly precipitation patterns in Ottawa, 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 Ottawa, June typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec738395991341221108870918562
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Ottawa

In Ottawa in June humidity is 82%. With an average temperature of 22°C (72°F), this humidity feels like walking through a warm, damp blanket, making travel feel more exhausting and sticky as sweat clings to your skin, and every step seems to draw you into a slow, sultry embrace.

June Average Humidity in Ottawa

This chart illustrates the average monthly humidity levels in Ottawa, 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 Ottawa is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Ottawa

In Ottawa in June, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Ottawa.

Maximum UV Index Levels in Ottawa for June

The chart shows the monthly maximum UV Index (UVI) for Ottawa 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 Ottawa typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Ottawa 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 Ottawa Compares to Other Months

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

This table compares monthly weather conditions in Ottawa, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)73 mm (2.9 inches)88%moderate
February Weather0°C (32°F)83 mm (3.3 inches)87%moderate
March Weather5°C (41°F)95 mm (3.8 inches)87%high
April Weather10°C (50°F)99 mm (3.9 inches)87%very high
May Weather17°C (63°F)134 mm (5.3 inches)81%very high
June Weather22°C (72°F)122 mm (4.8 inches)82%very high
July Weather24°C (76°F)110 mm (4.3 inches)81%very high
August Weather23°C (73°F)88 mm (3.4 inches)78%very high
September Weather20°C (68°F)70 mm (2.8 inches)78%very high
October Weather14°C (57°F)91 mm (3.6 inches)82%high
November Weather5°C (42°F)85 mm (3.3 inches)89%moderate
December Weather2°C (35°F)62 mm (2.5 inches)86%low

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