Harjavalta Temperature by Month

Harjavalta, Western Finland, Finland has an average annual maximum temperature of 10°C (50°F), ranging from -1°C (30°F) in February to 23°C (73°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

Visitors to Harjavalta will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 12°C (54°F) in July to -8°C (18°F) in February.

The chart below illustrates the average maximum day and minimum night temperatures in Harjavalta 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:

Harjavalta'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:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

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

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