Royan Weather in December
Average highs run from 12°C on December 1 to 10°C on December 31, and lows from 8°C to 7°C. Normal precipitation for the month is 87 mm over about 16 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
- 11°C
- Average low
- 7°C
- Precipitation
- 87 mm
- Reanalysis high
- 18°CDec 7, 2000
- Reanalysis low
- -5°CDec 29, 1996
- Daylight
- 8 h 58 min to 8 h 45 min
- Cloud cover
- 73%
- Humidity
- 86%
- Dew point
- 7°C
- Wind
- 23.4 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 | 12°C | 8°C | 16°C 2011 | 2°C 2010 | 47% |
| Dec 2 | 12°C | 8°C | 16°C 1992 | 2°C 2016 | 47% |
| Dec 3 | 12°C | 8°C | 16°C 1994 | 2°C 2016 | 46% |
| Dec 4 | 12°C | 8°C | 16°C 2006 | 3°C 1997 | 46% |
| Dec 5 | 12°C | 8°C | 17°C 2006 | 2°C 1991 | 46% |
| Dec 6 | 12°C | 8°C | 15°C 2000 | 2°C 1995 | 46% |
| Dec 7 | 12°C | 8°C | 18°C 2000 | 2°C 1995 | 44% |
| Dec 8 | 11°C | 8°C | 16°C 2006 | 2°C 1991 | 44% |
| Dec 9 | 11°C | 8°C | 15°C 1994 | 1°C 1991 | 44% |
| Dec 10 | 11°C | 7°C | 15°C 2000 | 2°C 2010 | 44% |
| Dec 11 | 11°C | 7°C | 15°C 2000 | 2°C 2005 | 44% |
| Dec 12 | 11°C | 7°C | 15°C 2000 | 1°C 2012 | 44% |
| Dec 13 | 11°C | 7°C | 15°C 2011 | 1°C 2010 | 44% |
| Dec 14 | 11°C | 7°C | 15°C 2019 | -2°C 2001 | 45% |
| Dec 15 | 11°C | 7°C | 15°C 2019 | -2°C 2001 | 44% |
| Dec 16 | 11°C | 7°C | 16°C 2011 | -2°C 2001 | 43% |
| Dec 17 | 11°C | 7°C | 14°C 2015 | -2°C 2001 | 44% |
| Dec 18 | 11°C | 7°C | 14°C 2014 | -1°C 2001 | 44% |
| Dec 19 | 11°C | 7°C | 15°C 2015 | 0°C 2001 | 44% |
| Dec 20 | 11°C | 7°C | 14°C 2015 | 0°C 2001 | 45% |
| Dec 21 | 11°C | 7°C | 15°C 2015 | 0°C 2001 | 46% |
| Dec 22 | 11°C | 7°C | 15°C 1995 | 0°C 2005 | 47% |
| Dec 23 | 11°C | 7°C | 15°C 2002 | 1°C 2005 | 49% |
| Dec 24 | 11°C | 7°C | 15°C 2015 | 1°C 2001 | 49% |
| Dec 25 | 11°C | 7°C | 16°C 1997 | 0°C 2006 | 50% |
| Dec 26 | 11°C | 7°C | 15°C 1999 | -1°C 1996 | 49% |
| Dec 27 | 11°C | 7°C | 15°C 2013 | 0°C 1996 | 49% |
| Dec 28 | 10°C | 7°C | 15°C 2015 | -3°C 1996 | 49% |
| Dec 29 | 10°C | 7°C | 14°C 2009 | -5°C 1996 | 48% |
| Dec 30 | 10°C | 7°C | 14°C 2015 | -2°C 1996 | 48% |
| Dec 31 | 10°C | 7°C | 15°C 2006 | -1°C 1996 | 48% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- December 1
- sunrise 8:24 AM, sunset 5:22 PM
- December 31
- sunrise 8:45 AM, sunset 5:30 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.