Ílhavo Weather in December
Average highs run from 15°C on December 1 to 14°C on December 31, and lows from 9°C to 8°C. Normal precipitation for the month is 124 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
- 14°C
- Average low
- 8°C
- Precipitation
- 124 mm
- Reanalysis high
- 21°CDec 10, 1994
- Reanalysis low
- -1°CDec 30, 2014
- Daylight
- 9 h 29 min to 9 h 19 min
- Cloud cover
- 57%
- Humidity
- 85%
- Dew point
- 9°C
- Wind
- 11.9 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 | 15°C | 9°C | 19°C 1994 | 3°C 2013 | 43% |
| Dec 2 | 15°C | 9°C | 18°C 1992 | 2°C 1998 | 43% |
| Dec 3 | 15°C | 9°C | 18°C 2015 | 3°C 2013 | 41% |
| Dec 4 | 15°C | 9°C | 18°C 2006 | 3°C 2010 | 40% |
| Dec 5 | 15°C | 9°C | 19°C 2016 | 4°C 1998 | 41% |
| Dec 6 | 15°C | 9°C | 18°C 2016 | 3°C 1997 | 41% |
| Dec 7 | 15°C | 9°C | 18°C 2016 | 3°C 2013 | 40% |
| Dec 8 | 15°C | 9°C | 17°C 2017 | 4°C 2004 | 40% |
| Dec 9 | 15°C | 9°C | 18°C 1994 | 4°C 2013 | 40% |
| Dec 10 | 15°C | 9°C | 21°C 1994 | 5°C 2005 | 39% |
| Dec 11 | 15°C | 9°C | 19°C 1994 | 3°C 2005 | 40% |
| Dec 12 | 15°C | 9°C | 19°C 1994 | 4°C 2005 | 41% |
| Dec 13 | 15°C | 9°C | 19°C 1994 | 5°C 2007 | 41% |
| Dec 14 | 15°C | 9°C | 19°C 1998 | 3°C 2009 | 41% |
| Dec 15 | 15°C | 9°C | 19°C 1998 | 1°C 2009 | 40% |
| Dec 16 | 14°C | 8°C | 18°C 1998 | 0°C 2010 | 40% |
| Dec 17 | 14°C | 8°C | 18°C 2002 | 2°C 2010 | 39% |
| Dec 18 | 14°C | 8°C | 19°C 2015 | 3°C 2010 | 40% |
| Dec 19 | 14°C | 8°C | 17°C 2017 | 1°C 2009 | 40% |
| Dec 20 | 14°C | 8°C | 17°C 1995 | -1°C 2009 | 40% |
| Dec 21 | 14°C | 8°C | 17°C 2008 | 3°C 2006 | 40% |
| Dec 22 | 14°C | 8°C | 17°C 1995 | 3°C 2006 | 41% |
| Dec 23 | 14°C | 8°C | 17°C 1995 | 3°C 2003 | 42% |
| Dec 24 | 14°C | 8°C | 18°C 2019 | 0°C 2001 | 43% |
| Dec 25 | 14°C | 8°C | 17°C 1995 | 0°C 2001 | 45% |
| Dec 26 | 14°C | 8°C | 16°C 2002 | 2°C 2010 | 46% |
| Dec 27 | 14°C | 8°C | 17°C 1995 | 3°C 2020 | 45% |
| Dec 28 | 14°C | 8°C | 17°C 2016 | 3°C 1991 | 45% |
| Dec 29 | 14°C | 8°C | 18°C 2019 | 3°C 2014 | 45% |
| Dec 30 | 14°C | 8°C | 17°C 1994 | -1°C 2014 | 46% |
| Dec 31 | 14°C | 8°C | 17°C 1995 | 2°C 1999 | 46% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+0).
- December 1
- sunrise 7:39 AM, sunset 5:08 PM
- December 31
- sunrise 7:58 AM, sunset 5:17 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.