Turku Temperature by Month

The average annual maximum temperature in Turku, Southern Finland, Finland is 11°C (52°F), with daytime highs ranging from 0°C (32°F) in February to 23°C (73°F) in July. This page covers monthly averages, day-night differences, and how Turku compares to cities worldwide.

Depending on the time of the year, temperatures range from comfortable to very cold in Turku. At night, minimum temperatures range from 13°C (55°F) in July to -8°C (18°F) in February.

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 288 hours of sunshine.

The chart below shows the average temperature throughout the year:

Turku'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.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

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.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

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