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Sussex (NB) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sussex.
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Climate overview of Sussex
Sussex, New Brunswick, Canada, sees big temperature differences between seasons, with July peaking at 25°C (77°F) and January dropping to -2°C (28°F).
With around 1235 mm (49 in) of annual rain/snowfall, Sussex has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has warm summers and very cold winters. The wettest month is December. The sunniest month is July, with 8.5 hours of sunshine per day on average.
Sussex Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sussex - and find the best time to visit.
Monthly Temperature in Sussex
Visitors to Sussex can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 25°C (77°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -2°C (28°F).
At night, temperatures range from around 14°C (57°F) in July to -14°C (7°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sussex
Sussex is known for its substantial rain/snowfall, with annual precipitation reaching 1235 mm (49 in). Despite minor fluctuations, Sussex enjoys fairly consistent precipitation throughout the year. In December, you can expect around 122 mm (4.8 in) of precipitation, while in August, Sussex receives about 83 mm (3.3 in). For more details, please visit our Sussex Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Sussex
Sussex can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 8.5 hours of sunshine daily. In contrast, the city experiences much darker days in November, with only 3.2 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Moncton, Canada (68 KM, 42 Miles).
Daily hours of sunshine
Data from: Moncton, Canada (68 KM, 42 Miles).
Daily percentage of sunshine
Data from: Moncton, Canada (68 KM, 42 Miles).
Best Time to Visit Sussex
The most comfortable overall weather for exploring Sussex is usually found in July and August. Conditions are generally least comfortable in January, February, March, April, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
very cold
Feb
very cold
Mar
cold
Apr
cold
May
good
Jun
very good
Jul
excellent
Aug
excellent
Sep
very good
Oct
mixed
Nov
wet
Dec
cold
- Best overall: July and August
- Warmest weather: July and August
- Most sunshine: July
- 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 Sussex
What is the best time to visit Sussex?
July and August typically offer the most optimal weather in Sussex. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Sussex has warm summers and very cold winters.
What temperatures can I expect in Sussex?
Daytime highs range from -2°C (28°F) in January to 25°C (77°F) in July. Nighttime lows range from -14°C (7°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Sussex get?
Annual rainfall is around 1235 mm (49 in). December is the wettest month with 122 mm (4.8 in), while August is the driest with 83 mm (3.3 in). In the coldest months, precipitation may fall as snow.
How sunny is Sussex?
Sussex receives around 1,998 hours of sunshine per year. July is the sunniest month with 256 hours, while November is the cloudiest with just 95 hours.
Sussex 3-Day Forecast
Sussex on the map
Sussex is highlighted - select any city to see its climate.
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