Sussex (NB) Temperature by Month

Sussex in New Brunswick, Canada sees significant seasonal temperature differences, with daytime highs between -2°C (28°F) in January and 25°C (77°F) in July, averaging 12°C (54°F) annually. Explore the full monthly breakdown below.

The weather in Sussex experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 14°C (57°F) in July to -14°C (7°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Sussex by month:

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. July, the warmest month of the year, receives 256 hours of sunshine.

The chart below shows the average temperature throughout the year:

Sussex's average annual maximum temperature is 12°C (54°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Sussex's weather, including monthly rainfall, sunshine hours, and humidity, visit our Sussex climate page.