Olsztyn Temperature by Month
The average annual maximum temperature in Olsztyn, Warmia-Masuria, Poland is 13°C (55°F), with daytime highs ranging from 1°C (34°F) in January to 24°C (75°F) in July. This page covers monthly averages, day-night differences, and how Olsztyn compares to cities worldwide.
Olsztyn Monthly Temperatures
Visitors to Olsztyn will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 13°C (55°F) in July to -4°C (25°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Olsztyn 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:
Temperature: Olsztyn vs Poland
The map below shows the annual temperature across Poland. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Olsztyn vs World: Temperature Compared
Olsztyn's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to 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.
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 Olsztyn's weather — including monthly rainfall, sunshine hours, and humidity — visit our Olsztyn climate page.
