July
Other strong months: August and June
85/100 weather score
Finland · 1991–2020
Best time to visit
Helsinki
For Helsinki, July has the most comfortable weather in our climate comparison. Typical daytime highs are 21.9°C, nights average 14.5°C, and rainfall totals about 57 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthJuly
Typical daytime high21.9°C
Typical night-time low14.5°C
July rainfall57 mm
July
Other strong months: August and June
52/100 weather score
June
Other strong months: July and August
84/100 weather score
Make the answer personal
Choose the weather
that suits you.
Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.
3 months fit your choices for Helsinki
The lowest comfort score is 5 out of 100. January, February, March, November and December share that score. In January, that is mainly because days reach only -0.8°C, 25° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Helsinki?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Helsinki?
July is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 21.9°C and 57 mm of rain.
What is the hottest month in Helsinki?
July is hottest in this record, with a typical daytime high of 21.9°C and a night-time low of 14.5°C.
Which month has the least rain?
March and April have the lowest monthly rainfall total at 34 mm.
Is this a weather forecast?
No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.
Month by month
See how the weather
changes through the year.
The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | -0.8°C | -5.6°C | 53 mm | 11.5 | 2.1°C | 6 h 36 | 5 | Strong coverage |
| February | -1.3°C | -6.4°C | 38 mm | 8.8 | 0.8°C | 8 h 59 | 5 | Strong coverage |
| March | 2.3°C | -3.6°C | 34 mm | 7.6 | 0.7°C | 11 h 33 | 5 | Strong coverage |
| April | 8.1°C | 1.1°C | 34 mm | 7.3 | 2.2°C | 14 h 27 | 19 | Strong coverage |
| May | 14.5°C | 6.4°C | 38 mm | 6.9 | 6.2°C | 17 h 08 | 49 | Strong coverage |
| June | 18.8°C | 11.2°C | 60 mm | 8.4 | 11.4°C | 18 h 52 | 68 | Strong coverage |
| July | 21.9°C | 14.5°C | 57 mm | 7.4 | 16.1°C | 18 h 08 | 85 | Strong coverage |
| August | 20.5°C | 13.5°C | 81 mm | 9.7 | 17.2°C | 15 h 39 | 73 | Strong coverage |
| September | 15.4°C | 9.3°C | 56 mm | 8.6 | 14.4°C | 12 h 46 | 53 | Strong coverage |
| October | 9.1°C | 4.2°C | 73 mm | 10.2 | 10.3°C | 9 h 58 | 20 | Strong coverage |
| November | 4.4°C | 0.4°C | 69 mm | 11.5 | 7.0°C | 7 h 21 | 5 | Strong coverage |
| December | 1.4°C | -2.9°C | 58 mm | 11.3 | 4.2°C | 5 h 52 | 5 | Strong coverage |
What has changed
Recent daytime highs are
2.0°C warmer in Helsinki.
Each bar shows the difference between the 2011–2025 average daytime high and the 1961–1990 average for the same month at the same station. A blank month does not have enough older observations for a reliable comparison.
Jan
+2.2
Feb
+2.8
Mar
+2.6
Apr
+2.1
May
+1.4
Jun
+1.0
Jul
+1.7
Aug
+1.7
Sep
+2.4
Oct
+1.1
Nov
+2.1
Dec
+2.6
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 8.5°C6 Jan 1973 | -34.3°C10 Jan 1987 | 20 mm12 Jan 2021 | 91 mm2005 · driest 5 mm in 1996 | 76 |
| February | 10.2°C19 Feb 1998 | -31.5°C3 Feb 1966 | 34 mm16 Feb 2020 | 110 mm1957 · driest 1 mm in 1994 | 76 |
| March | 15.1°C26 Mar 2007 | -22.1°C1 Mar 1965 | 21 mm30 Mar 1961 | 73 mm1951 · driest 2 mm in 1964 | 76 |
| April | 21.9°C28 Apr 1993 | -13.5°C1 Apr 1963 | 36 mm27 Apr 2001 | 113 mm1977 · driest 4 mm in 1987 | 76 |
| May | 27.6°C29 May 1963 | -3.1°C3 May 1999 | 40 mm26 May 2021 | 85 mm1958 · driest 3 mm in 1954 | 76 |
| June | 30.5°C28 Jun 1972 | 1.0°C1 Jun 2000 | 42 mm16 Jun 2016 | 140 mm2016 · driest 4 mm in 1970 | 76 |
| July | 33.2°C28 Jul 2019 | 7.0°C5 Jul 1965 | 79 mm24 Jul 1993 | 177 mm2004 · driest 2 mm in 1994 | 75 |
| August | 31.2°C8 Aug 1975 | 2.8°C29 Aug 1966 | 53 mm24 Aug 1967 | 180 mm2005 · driest 1 mm in 1996 | 75 |
| September | 26.2°C6 Sep 1968 | -4.5°C28 Sep 1986 | 41 mm12 Sep 1962 | 160 mm2012 · driest 3 mm in 1959 | 75 |
| October | 17.5°C5 Oct 2005 | -11.6°C31 Oct 1992 | 46 mm13 Oct 1963 | 184 mm2006 · driest 11 mm in 1951 | 75 |
| November | 14.3°C12 Nov 2022 | -18.6°C30 Nov 1980 | 28 mm20 Nov 2024 | 160 mm1996 · driest 7 mm in 1993 | 75 |
| December | 10.5°C20 Dec 2015 | -29.5°C31 Dec 1978 | 30 mm12 Dec 2017 | 121 mm2011 · driest 9 mm in 1978 | 75 |
| Month | Days 25°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 0 | 25 | 1 |
| February | 0 | 23 | <1 |
| March | 0 | 22 | <1 |
| April | 0 | 10 | <1 |
| May | <1 | <1 | <1 |
| June | 1 | 0 | 2 |
| July | 6 | 0 | 2 |
| August | 3 | 0 | 3 |
| September | 0 | <1 | 2 |
| October | 0 | 6 | 2 |
| November | 0 | 13 | 2 |
| December | 0 | 20 | <1 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 36% | 3% | 47% | -5.9–1.8°C |
| February | 0% | 30% | 2% | 38% | -6.4–2.1°C |
| March | 0% | 25% | 2% | 30% | -1.4–4.1°C |
| April | <1% | 24% | 3% | 28% | 4.9–9.8°C |
| May | 10% | 22% | 2% | 23% | 12.0–16.2°C |
| June | 33% | 27% | 5% | 32% | 16.8–21.3°C |
| July | 52% | 27% | 6% | 33% | 19.1–24.0°C |
| August | 36% | 34% | 8% | 46% | 18.0–21.8°C |
| September | 4% | 32% | 6% | 41% | 12.8–16.9°C |
| October | 0% | 34% | 7% | 44% | 7.1–11.1°C |
| November | 0% | 40% | 5% | 54% | 1.3–6.4°C |
| December | 0% | 38% | 4% | 53% | -3.1–3.9°C |
A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.
The evidence behind this page
Where these figures
come from.
- Place identity
- GeoNames 658225
- NOAA station
- FI000000304 · HELSINKI KAISANIEMI AWS
- Station distance
- 0.9 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 60.17°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 6 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Helsinki is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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