Average weather, temperature, rainfall, sunshine hours
The climate of Turku is Baltic, that is,
moderately continental, with cold winters, during which the average temperature is a few degrees below freezing, and mild to pleasantly warm summers.
The city is located in the south-west of Finland.
The
white nights, when it doesn't get completely dark even at midnight, occur from 11 May to 3 August.
In winter, there can be cold spells of arctic origin, while in summer, there can be short hot periods. In January 1987, it fell to -35 °C (-31 °F), while in summer, it reached 32 °C (89.5 °F) in July 2010.
The
average temperature of the coldest month (February) is of -5.2 °C (23 °F), that of the warmest month (July) is of 17.5 °C (63 °F). Here are the average temperatures.
Turku - Average temperatures| Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
|---|
| January | -7 | -2 | -4.5 | 19 | 29 | 23.9 |
|---|
| February | -8 | -2 | -5.2 | 17 | 28 | 22.6 |
|---|
| March | -5 | 2 | -1.5 | 23 | 36 | 29.4 |
|---|
| April | 0 | 9 | 4.3 | 32 | 48 | 39.7 |
|---|
| May | 5 | 16 | 10.2 | 41 | 60 | 50.3 |
|---|
| June | 9 | 20 | 14.4 | 49 | 67 | 57.9 |
|---|
| July | 13 | 22 | 17.4 | 55 | 72 | 63.4 |
|---|
| August | 12 | 20 | 16 | 53 | 69 | 60.9 |
|---|
| September | 7 | 15 | 11 | 45 | 59 | 51.9 |
|---|
| October | 3 | 9 | 6 | 38 | 48 | 42.8 |
|---|
| November | -2 | 3 | 0.7 | 29 | 37 | 33.3 |
|---|
| December | -6 | 0 | -2.8 | 22 | 32 | 26.9 |
|---|
| Year | 1.8 | 9.4 | 5.55 | 35.2 | 48.8 | 42 |
|---|
amounts to 725 millimeters (28.5 inches) per year: so, it is at an intermediate level. It ranges from 30 mm (1.2 in) in the driest month (April) to 80 mm (3.1 in) in the wettest ones (July, August, October). Here is the average precipitation.
Turku - Average precipitation| Month | Millimeters | Inches | Days |
|---|
| January | 60 | 2.4 | 11 |
|---|
| February | 40 | 1.6 | 8 |
|---|
| March | 45 | 1.8 | 9 |
|---|
| April | 30 | 1.2 | 7 |
|---|
| May | 40 | 1.6 | 7 |
|---|
| June | 60 | 2.4 | 8 |
|---|
| July | 80 | 3.1 | 9 |
|---|
| August | 80 | 3.1 | 11 |
|---|
| September | 65 | 2.6 | 9 |
|---|
| October | 80 | 3.1 | 12 |
|---|
| November | 75 | 3 | 13 |
|---|
| December | 70 | 2.8 | 12 |
|---|
| Year | 725 | 28.5 | 116 |
|---|
On average, there are around 1,840
sunshine hours per year. Here are the average sunshine hours per day.
Turku - Sunshine hours| Month | Average | Total |
|---|
January | 1.5 | 40 | February | 2.5 | 75 | March | 4.5 | 135 | April | 7 | 205 | May | 9 | 285 | June | 9 | 275 | July | 9.5 | 285 | August | 7.5 | 230 | September | 5 | 155 | October | 3 | 90 | November | 1.5 | 40 | December | 1 | 25 | Year | 5 | 1840 |
The
sea temperature ranges between 1 °C (34 °F) and 17 °C (63 °F). So, it never becomes warm for swimming. Here are the average sea temperatures.
Turku - Sea temperature| Month | Celsius (°C) | Fahrenheit (°F) |
|---|
January | 3 | 37 | February | 2 | 35 | March | 1 | 35 | April | 3 | 37 | May | 6 | 42 | June | 11 | 52 | July | 16 | 61 | August | 17 | 63 | September | 15 | 58 | October | 11 | 51 | November | 8 | 46 | December | 5 | 41 | Year | 8.1 | 46.6 |
![]()
Best Time
The
best time to visit Turku is the
summer, from June to August, since it is the mildest season. However, you must take into account some rainy days and a bit of cold at night.