ClimateAverages

Turku Climate

Southwest Finland, Finland · population 175,945 · 169 weather stations within 200 km · records 1750 to 2025

Average annual daytime high
8.4°C
Warmest month · July
20.9°C
Typical daytime high
Coldest month · February
-10.0°C
Typical overnight low

Turku has an average annual daytime high of 8.4°C, based on the 1951 to 1980 baseline. Its warmest month is July, when highs typically reach 20.9°C, and its coldest is February, with overnight lows near -10.0°C.

Month by month averages

MonthAvg highAvg low
January-3.1°C-8.9°C
February-3.5°C-10.0°CColdest
March0.9°C-7.3°C
April6.7°C-1.5°C
May14.2°C3.4°C
June19.6°C8.7°C
July20.9°C11.1°CWarmest
August19.8°C10.6°C
September14.3°C6.6°C
October8.4°C2.5°C
November3.0°C-1.7°C
December-0.8°C-5.7°C

Temperature range across the year

-12°-3°5°14°23°JanFebMarAprMayJunJulAugSepOctNovDec
Daytime high Overnight low
Hottest year on record
2024
+2.8°C vs. 1951–1980
Coldest year on record
1941
-3.1°C vs. 1951–1980

These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.

Is Turku getting hotter?

Since 1900, Turku's average temperature has risen by +2.7°C. Compared to the earliest station records that begin in 1750, warming totals +2.6°C.

3.9°4.8°5.6°6.4°7.2°1951–1980 baseline190019251950197520002025

20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.

Best time to visit
June to August

Daytime highs sit within a comfortable 15°C to 26°C range.

FAQ

What is the average temperature in Turku?

Turku's average annual daytime high is 8.4°C, based on the 1951 to 1980 baseline period. The warmest month is July, with highs averaging 20.9°C, and the coldest is February, with lows averaging -10.0°C.

What is the warmest month in Turku?

July is the warmest month in Turku, with typical daytime highs of 20.9°C.

What is the hottest year on record for Turku?

2024 is the hottest year on record for Turku, running +2.8°C above the 1951 to 1980 baseline.

Is Turku getting hotter?

Yes. Since 1900, Turku has warmed by roughly +2.7°C.

When is the best time to visit Turku?

June to August typically offers the most comfortable daytime highs, in the 15°C to 26°C range.

Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.