Vaasa Weather in December
Average highs run from 1°C on December 1 to -1°C on December 31, and lows from -1°C to -4°C. Normal precipitation for the month is 59 mm over about 12 wet days.
December day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
December at a glance
- Average high
- 0°C
- Average low
- -3°C
- Precipitation
- 59 mm
- Reanalysis high
- 7°CDec 6, 2000
- Reanalysis low
- -18°CDec 29, 2002
- Daylight
- 5 h 28 min to 4 h 51 min
- Cloud cover
- 78%
- Humidity
- 92%
- Dew point
- -2°C
- Wind
- 18.0 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 |
|---|---|---|---|---|---|
| Dec 1 | 1°C | -1°C | 6°C 2011 | -12°C 2002 | 49% |
| Dec 2 | 1°C | -1°C | 6°C 2011 | -9°C 2002 | 48% |
| Dec 3 | 1°C | -1°C | 6°C 2000 | -8°C 2002 | 48% |
| Dec 4 | 1°C | -1°C | 6°C 2000 | -11°C 2002 | 48% |
| Dec 5 | 1°C | -1°C | 6°C 2000 | -11°C 2002 | 47% |
| Dec 6 | 1°C | -1°C | 7°C 2000 | -12°C 2002 | 48% |
| Dec 7 | 1°C | -1°C | 7°C 2000 | -11°C 2002 | 47% |
| Dec 8 | 1°C | -1°C | 6°C 2006 | -10°C 2002 | 47% |
| Dec 9 | 1°C | -2°C | 6°C 2015 | -9°C 2002 | 47% |
| Dec 10 | 1°C | -2°C | 6°C 2015 | -7°C 2002 | 47% |
| Dec 11 | 1°C | -2°C | 6°C 2000 | -8°C 2010 | 47% |
| Dec 12 | 1°C | -2°C | 5°C 2000 | -9°C 1999 | 47% |
| Dec 13 | 1°C | -2°C | 5°C 2006 | -11°C 2010 | 46% |
| Dec 14 | 0°C | -2°C | 6°C 2006 | -11°C 2010 | 46% |
| Dec 15 | 0°C | -2°C | 5°C 2006 | -12°C 2010 | 44% |
| Dec 16 | 0°C | -2°C | 4°C 2013 | -8°C 1999 | 44% |
| Dec 17 | 0°C | -3°C | 4°C 2013 | -12°C 2010 | 42% |
| Dec 18 | 0°C | -3°C | 4°C 2008 | -14°C 2010 | 42% |
| Dec 19 | 0°C | -3°C | 4°C 2008 | -13°C 2010 | 41% |
| Dec 20 | 0°C | -3°C | 6°C 2015 | -14°C 2010 | 41% |
| Dec 21 | -1°C | -3°C | 7°C 2015 | -12°C 2012 | 40% |
| Dec 22 | -1°C | -3°C | 5°C 2006 | -15°C 2012 | 41% |
| Dec 23 | -1°C | -4°C | 5°C 2006 | -16°C 2012 | 41% |
| Dec 24 | -1°C | -4°C | 5°C 2006 | -17°C 2010 | 40% |
| Dec 25 | -1°C | -4°C | 5°C 2015 | -17°C 2010 | 41% |
| Dec 26 | -1°C | -4°C | 5°C 2011 | -14°C 2012 | 41% |
| Dec 27 | -1°C | -4°C | 5°C 2007 | -14°C 1993 | 40% |
| Dec 28 | -1°C | -4°C | 5°C 2007 | -16°C 2010 | 40% |
| Dec 29 | -1°C | -4°C | 5°C 2007 | -18°C 2002 | 40% |
| Dec 30 | -1°C | -4°C | 4°C 2019 | -15°C 2002 | 41% |
| Dec 31 | -1°C | -4°C | 4°C 2016 | -15°C 2002 | 42% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- December 1
- sunrise 9:38 AM, sunset 3:06 PM
- December 31
- sunrise 10:11 AM, sunset 3:02 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.