Rothesay (NB) Temperature by Month

Rothesay in New Brunswick, Canada sees significant seasonal temperature differences, with daytime highs between -1°C (30°F) in January and 22°C (72°F) in August, averaging 11°C (52°F) annually. Explore the full monthly breakdown below.

Depending on the time of the year, temperatures range from comfortable to very cold in Rothesay. At night, minimum temperatures range from 15°C (59°F) in August to -11°C (12°F) in January.

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

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest.

The chart below shows the average temperature throughout the year:

Rothesay's average annual maximum temperature is 11°C (52°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Glasgow, Scotland averages 13°C (55°F) a year, mild but often grey, with cold winters and rarely hot summers.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

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 Rothesay's weather, including monthly rainfall, sunshine hours, and humidity, visit our Rothesay climate page.