Hanover (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Hanover.
Climate overview of Hanover
Hanover, Ontario, Canada, sees big temperature differences between seasons, with July peaking at 26°C (79°F) and January dropping to -1°C (30°F).
Rain/snowfall is high, totalling around 1075 mm (42 in) per year. June is the wettest month and March the driest. The city also experiences warm summers and very cold winters.
Hanover Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Hanover - and find the best time to visit.
Monthly Temperature in Hanover
Visitors to Hanover can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in July, the warmest time of the year, to a very cold -1°C (30°F) during cooler months like January.
At night, you can expect temperatures ranging from 14°C (57°F) in July to around -11°C (12°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Hanover
Hanover is known for its substantial rain/snowfall, with annual precipitation reaching 1075 mm (42 in). Year-round, Hanover has a balanced climate with minimal variation in precipitation. The difference between the wettest month, June, with 105 mm (4.1 in), and the driest month, March, with 69 mm (2.7 in), is minimal. For more details, please visit our Hanover Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Hanover
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July, August and September
- Warmest weather: July and August
- Fewest rainy days: July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -11°C (12°F).
Frequently asked questions about the climate in Hanover
What is the best time to visit Hanover?
May, July, August and September typically offer the most optimal weather in Hanover. In contrast, January, February, March, November and December tend to have less optimal conditions. Hanover has warm summers and very cold winters.
What temperatures can I expect in Hanover?
Daytime highs range from -1°C (30°F) in January to 26°C (79°F) in July. Nighttime lows range from -11°C (12°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Hanover get?
Annual rainfall is around 1075 mm (42 in). June is the wettest month with 105 mm (4.1 in), while March is the driest with 69 mm (2.7 in).
Hanover 3-Day Forecast
Hanover (ON) 3-Day Forecast
Hanover on the map
Hanover is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Niagara Falls
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19°C (66°F) 
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