Summerside (PE) Temperature by Month

Summerside in Prince Edward Island, Canada sees significant seasonal temperature differences, with daytime highs between -2°C (28°F) in February and 24°C (75°F) in July, averaging 11°C (52°F) annually. Explore the full monthly breakdown below.

The climate in Summerside is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 16°C (61°F) in July to -11°C (12°F) in February.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 254 hours of sunshine.

The chart below shows the average temperature throughout the year:

Summerside'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:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

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

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

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