Helsinki Weather in April
Average highs run from 3°C on April 1 to 8°C on April 30, and lows from -1°C to 3°C. Normal precipitation for the month is 45 mm over about 9 wet days.
April day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
April at a glance
- Average high
- 5°C
- Average low
- 1°C
- Precipitation
- 45 mm
- Reanalysis high
- 17°CApr 29, 1998
- Reanalysis low
- -9°CApr 2, 2003
- Daylight
- 13 h 18 min to 15 h 56 min
- Cloud cover
- 66%
- Humidity
- 85%
- Dew point
- 1°C
- Wind
- 14.8 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Apr 1 | 3°C | -1°C | 7°C 2008 | -9°C 2003 | 33% |
| Apr 2 | 3°C | -1°C | 6°C 2007 | -9°C 2003 | 34% |
| Apr 3 | 3°C | -1°C | 7°C 2008 | -8°C 1998 | 33% |
| Apr 4 | 3°C | -1°C | 8°C 2019 | -8°C 1998 | 33% |
| Apr 5 | 3°C | -1°C | 8°C 2019 | -5°C 1999 | 33% |
| Apr 6 | 3°C | -1°C | 8°C 2016 | -6°C 2003 | 34% |
| Apr 7 | 4°C | -1°C | 9°C 2020 | -7°C 2003 | 34% |
| Apr 8 | 4°C | 0°C | 9°C 2001 | -7°C 2003 | 32% |
| Apr 9 | 4°C | 0°C | 7°C 2018 | -7°C 1998 | 33% |
| Apr 10 | 4°C | 0°C | 8°C 2017 | -4°C 1998 | 33% |
| Apr 11 | 4°C | 0°C | 8°C 2009 | -4°C 1996 | 32% |
| Apr 12 | 5°C | 0°C | 10°C 1991 | -4°C 1997 | 32% |
| Apr 13 | 5°C | 0°C | 10°C 1991 | -5°C 1996 | 31% |
| Apr 14 | 5°C | 0°C | 11°C 2018 | -3°C 1996 | 30% |
| Apr 15 | 5°C | 1°C | 10°C 2005 | -3°C 1998 | 28% |
| Apr 16 | 5°C | 1°C | 10°C 2018 | -2°C 1996 | 30% |
| Apr 17 | 5°C | 1°C | 10°C 2004 | -1°C 2017 | 28% |
| Apr 18 | 6°C | 1°C | 14°C 2019 | -2°C 1992 | 28% |
| Apr 19 | 6°C | 1°C | 13°C 2000 | -2°C 2009 | 28% |
| Apr 20 | 6°C | 1°C | 13°C 2014 | -3°C 1994 | 28% |
| Apr 21 | 6°C | 2°C | 12°C 2003 | -3°C 1993 | 26% |
| Apr 22 | 6°C | 2°C | 15°C 2003 | -2°C 1992 | 27% |
| Apr 23 | 7°C | 2°C | 11°C 2019 | -2°C 1992 | 28% |
| Apr 24 | 7°C | 2°C | 16°C 1995 | -3°C 2003 | 28% |
| Apr 25 | 7°C | 2°C | 12°C 1993 | -5°C 2003 | 28% |
| Apr 26 | 7°C | 2°C | 12°C 1998 | -4°C 2003 | 28% |
| Apr 27 | 7°C | 3°C | 15°C 2014 | -4°C 2003 | 28% |
| Apr 28 | 8°C | 3°C | 13°C 1998 | 1°C 2013 | 28% |
| Apr 29 | 8°C | 3°C | 17°C 1998 | 0°C 1991 | 28% |
| Apr 30 | 8°C | 3°C | 15°C 1998 | -1°C 1999 | 27% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+3).
- April 1
- sunrise 6:46 AM, sunset 8:04 PM
- April 30
- sunrise 5:20 AM, sunset 9:16 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.