Climate averages 1991–2020
Turku weather
in July.
A mild, moderately wet month: the warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in Turku: daytime highs average 21.4°C and nights cool to about 13.6°C. By daytime temperature it is the warmest month of the year.
Expect about 85 mm of rain on roughly 12 days, which makes July a moderately wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 18 h 09 min on an average July day.
The nearest other city in this atlas is Pori (117 km away). In July its highs average 20.0°C, 1.4°C cooler than Turku, with 74 mm of rain.
Among the 13 cities listed in Finland, Turku ranks 4th of 13 for the warmest July highs and joint 10th of 13 for the driest July (rainfall, lowest first). The mean July high of those 13 cities is 20.8°C; Turku is 0.6°C warmer than that mean.
From July to August, average highs fall by 1.3°C to 20.1°C, and monthly rainfall falls from 85 mm to 80 mm.
The annual picture
July in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Turku climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.5°C-6.0°C | -6.0°C | 49 | 10.1 | 6.77 h |
| February | -2.0°C-7.2°C | -7.2°C | 38 | 8.5 | 9.09 h |
| March | 1.7°C-4.7°C | -4.7°C | 35 | 8.2 | 11.712 h |
| April | 8.2°C0.1°C | 0.1°C | 33 | 8.0 | 14.615 h |
| May | 14.4°C5.4°C | 5.4°C | 41 | 8.9 | 17.217 h |
| June | 18.5°C10.2°C | 10.2°C | 68 | 10.8 | 18.919 h |
| July, selected | 21.4°C13.6°C | 13.6°C | 85 | 12.3 | 18.118 h |
| August | 20.1°C12.9°C | 12.9°C | 80 | 12.5 | 15.716 h |
| September | 15.0°C8.8°C | 8.8°C | 58 | 9.5 | 13.013 h |
| October | 8.3°C3.7°C | 3.7°C | 59 | 10.4 | 10.210 h |
| November | 3.5°C0.0°C | 0.0°C | 55 | 10.9 | 7.58 h |
| December | 0.4°C-3.5°C | -3.5°C | 56 | 11.6 | 5.96 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Pori in JulyFinland · 117 kmHigh 20.0°C · Low 14.0°C · 74 mm rain
- Espoo in JulyFinland · 134 kmHigh 20.6°C · Low 14.7°C · 69 mm rain
- Mariehamn in JulyAland Islands · 135 kmHigh 18.4°C · Low 15.1°C · 48 mm rain
- Tampere in JulyFinland · 142 kmHigh 20.7°C · Low 14.0°C · 83 mm rain
- Helsinki in JulyFinland · 150 kmHigh 20.8°C · Low 14.6°C · 76 mm rain
- Vantaa in JulyFinland · 153 kmHigh 21.9°C · Low 14.2°C · 76 mm rain
- Tallinn in JulyEstonia · 179 kmHigh 21.5°C · Low 14.5°C · 68 mm rain
- Lahti in JulyFinland · 194 kmHigh 21.2°C · Low 13.9°C · 76 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Turku) is explained once on the Turku year overview and on the Sources, method and limits page.