Lahti Temperature by Month
Lahti, Southern Finland, Finland has an average annual maximum temperature of 10°C (50°F), ranging from -2°C (28°F) in February to 23°C (73°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Lahti Monthly Temperatures
Visitors to Lahti can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 13°C (55°F) in July to -9°C (16°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Lahti by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Lahti Temperatures: 1976-2026
Browse day-by-day temperature records for Lahti spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Lahti vs Finland
The map below shows the annual temperature across Finland. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Lahti vs World: Temperature Compared
Lahti's average annual maximum temperature is 10°C (50°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.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Lahti this rarely lasts long on the ground.
For more on Lahti's weather — including monthly rainfall, sunshine hours, and humidity — visit our Lahti climate page.
