This information may change. Always check the official source.Last verified: August 2026 by Ondřej Kadlec
Best time to visit Finland
In Helsinki: June to August — the months averaging 18–27 °C by day. No other month of the twelve falls inside that band in Helsinki.
Finland is not one climate. Each reference city below is answered on its own numbers.
Helsinki
Jan-2°January: -2 °C by day, -6 °C at night, 53 mm of rain
Feb-2°February: -2 °C by day, -7 °C at night, 48 mm of rain
Mar1°March: 1 °C by day, -5 °C at night, 37 mm of rain
Apr7°April: 7 °C by day, 0 °C at night, 37 mm of rain
May13°May: 13 °C by day, 6 °C at night, 48 mm of rain
Jun18°June: 18 °C by day, 11 °C at night, 69 mm of rain, recommended
Jul21°July: 21 °C by day, 14 °C at night, 78 mm of rain, recommended
Aug20°August: 20 °C by day, 14 °C at night, 78 mm of rain, recommended
Sep15°September: 15 °C by day, 10 °C at night, 59 mm of rain
Oct9°October: 9 °C by day, 5 °C at night, 67 mm of rain
Nov4°November: 4 °C by day, 1 °C at night, 65 mm of rain
Dec0°December: 0 °C by day, -3 °C at night, 59 mm of rain
Warmest
July, 21 °C
Coolest
January, -2 °C
Driest
March, 37 mm
Wettest
July, 78 mm
Rovaniemi
July — 18–27 °C by day. No other month of the twelve falls inside that band in Rovaniemi.
Jan-7°January: -7 °C by day, -13 °C at night, 37 mm of rain
Feb-7°February: -7 °C by day, -12 °C at night, 33 mm of rain
Mar-2°March: -2 °C by day, -9 °C at night, 31 mm of rain
Apr4°April: 4 °C by day, -4 °C at night, 37 mm of rain
May10°May: 10 °C by day, 2 °C at night, 50 mm of rain
Jun17°June: 17 °C by day, 9 °C at night, 67 mm of rain
Jul19°July: 19 °C by day, 12 °C at night, 85 mm of rain, recommended
Aug17°August: 17 °C by day, 10 °C at night, 73 mm of rain
Sep11°September: 11 °C by day, 6 °C at night, 58 mm of rain
Oct4°October: 4 °C by day, 0 °C at night, 57 mm of rain
Nov-2°November: -2 °C by day, -6 °C at night, 47 mm of rain
Dec-5°December: -5 °C by day, -11 °C at night, 41 mm of rain
Warmest
July, 19 °C
Coolest
January, -7 °C
Driest
March, 31 mm
Wettest
July, 85 mm
Turku
June to August — 18–27 °C by day. No other month of the twelve falls inside that band in Turku.
Jan-2°January: -2 °C by day, -6 °C at night, 51 mm of rain
Feb-2°February: -2 °C by day, -7 °C at night, 43 mm of rain
Mar2°March: 2 °C by day, -5 °C at night, 36 mm of rain
Apr8°April: 8 °C by day, 0 °C at night, 34 mm of rain
May15°May: 15 °C by day, 5 °C at night, 44 mm of rain
Jun19°June: 19 °C by day, 10 °C at night, 69 mm of rain, recommended
Jul22°July: 22 °C by day, 14 °C at night, 93 mm of rain, recommended
Aug20°August: 20 °C by day, 13 °C at night, 90 mm of rain, recommended
Sep15°September: 15 °C by day, 9 °C at night, 58 mm of rain
Oct9°October: 9 °C by day, 4 °C at night, 66 mm of rain
Nov4°November: 4 °C by day, 0 °C at night, 58 mm of rain
Dec0°December: 0 °C by day, -4 °C at night, 57 mm of rain
Warmest
July, 22 °C
Coolest
January, -2 °C
Driest
April, 34 mm
Wettest
July, 93 mm
How this is worked out: a month qualifies when its mean daytime high falls between 18 °C and 27 °C. Where more than five qualify, the answer is the driest run of consecutive qualifying months; where none do, it is the driest three months in a row if the year is hot throughout, or the warmest three if it never gets there. The figures are the thirty-year monthly averages charted below, and they are averages, not a forecast — any single year can miss them by a wide margin.
Helsinki
Long-term averages for Helsinki: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Helsinki
Month
Day (°C)
Night (°C)
Rain (mm)
January
-2
-6
53
February
-2
-7
48
March
1
-5
37
April
7
0
37
May
13
6
48
June
18
11
69
July
21
14
78
August
20
14
78
September
15
10
59
October
9
5
67
November
4
1
65
December
0
-3
59
Rovaniemi
Long-term averages for Rovaniemi: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Rovaniemi
Month
Day (°C)
Night (°C)
Rain (mm)
January
-7
-13
37
February
-7
-12
33
March
-2
-9
31
April
4
-4
37
May
10
2
50
June
17
9
67
July
19
12
85
August
17
10
73
September
11
6
58
October
4
0
57
November
-2
-6
47
December
-5
-11
41
Turku
Long-term averages for Turku: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
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