Port Sydney (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Port Sydney.
Climate overview of Port Sydney
Temperatures in Port Sydney, Ontario, Canada, vary greatly throughout the year. July is the hottest month at 25°C (77°F), while January is the coldest at -4°C (25°F).
Rain/snowfall is high, totalling around 1123 mm (44 in) per year. August is the wettest month and February the driest. The city also experiences warm summers and very cold winters.
Port Sydney Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Port Sydney - and find the best time to visit.
Monthly Temperature in Port Sydney
The climate in Port Sydney is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 25°C (77°F) in July, the warmest time of the year, to a very cold -4°C (25°F) during cooler months like January.
At night, you can expect temperatures ranging from 15°C (59°F) in July to around -14°C (7°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Port Sydney
Port Sydney has a notably wet climate with abundant precipitation, recording 1123 mm (44 in) of rain/snowfall per year. Year-round, Port Sydney has a balanced climate with minimal variation in precipitation. The difference between the wettest month, August, with 108 mm (4.3 in), and the driest month, February, with 69 mm (2.7 in), is minimal. For more details, please visit our Port Sydney 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 Port Sydney
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -14°C (7°F).
Frequently asked questions about the climate in Port Sydney
What is the best time to visit Port Sydney?
June, July, August and September typically offer the most optimal weather in Port Sydney. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Port Sydney has warm summers and very cold winters.
What temperatures can I expect in Port Sydney?
Daytime highs range from -4°C (25°F) in January to 25°C (77°F) in July. Nighttime lows range from -14°C (7°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Port Sydney get?
Annual rainfall is around 1123 mm (44 in). August is the wettest month with 108 mm (4.3 in), while February is the driest with 69 mm (2.7 in).
Port Sydney 3-Day Forecast
Port Sydney on the map
Port Sydney is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 5 most beautiful lakes in Canada
Explore Canada's stunning lakes: Lake Louise, Lake Superior, Maligne Lake, Emerald Lake, and Lake Okanagan, each offering unique beauty and activities.
Canoeing the south Nahannii
The South Nahanni in the northwest of Canada is one of the most impressive wilderness rivers in the world. Canoeing the south Nahanni is something you must add to your bucket list.
See Polar Bears in Churchill Canada
Thousands of bears gather at the small town of Churchill. In the evening the northern lights give a light show against the dark evening sky. An unforgettable experience.
Banff National Park
Snowy mountains, clear blue lakes and green forests make Banff National Park a wonderful bucket list destination. The pristine wilderness is a mecca for walkers.