Derry Weather in December
Average highs run from 8°C on December 1 to 6°C on December 31, and lows from 4°C to 3°C. Normal precipitation for the month is 127 mm over about 22 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
- 7°C
- Average low
- 4°C
- Precipitation
- 127 mm
- Reanalysis high
- 13°CDec 7, 2016
- Reanalysis low
- -3°CDec 2, 2010
- Daylight
- 7 h 36 min to 7 h 16 min
- Cloud cover
- 83%
- Humidity
- 92%
- Dew point
- 4°C
- Wind
- 25.6 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 | 8°C | 4°C | 12°C 2015 | -2°C 2010 | 72% |
| Dec 2 | 8°C | 4°C | 12°C 1995 | -3°C 2010 | 72% |
| Dec 3 | 8°C | 4°C | 12°C 1994 | -2°C 2010 | 71% |
| Dec 4 | 8°C | 4°C | 12°C 2007 | 1°C 2016 | 70% |
| Dec 5 | 8°C | 4°C | 12°C 2007 | -1°C 2010 | 70% |
| Dec 6 | 8°C | 4°C | 12°C 2007 | -1°C 2010 | 70% |
| Dec 7 | 8°C | 4°C | 13°C 2016 | -1°C 2010 | 70% |
| Dec 8 | 7°C | 4°C | 11°C 2015 | 0°C 1995 | 70% |
| Dec 9 | 7°C | 4°C | 12°C 2016 | 0°C 2017 | 71% |
| Dec 10 | 7°C | 4°C | 13°C 1994 | 0°C 2017 | 70% |
| Dec 11 | 7°C | 4°C | 13°C 1994 | 1°C 2012 | 70% |
| Dec 12 | 7°C | 4°C | 13°C 2013 | 1°C 2002 | 69% |
| Dec 13 | 7°C | 4°C | 12°C 1998 | 0°C 1996 | 68% |
| Dec 14 | 7°C | 4°C | 12°C 1998 | 1°C 1999 | 68% |
| Dec 15 | 7°C | 4°C | 10°C 2015 | 0°C 2000 | 68% |
| Dec 16 | 7°C | 4°C | 11°C 2015 | 1°C 2019 | 68% |
| Dec 17 | 7°C | 4°C | 12°C 2015 | 0°C 2010 | 68% |
| Dec 18 | 7°C | 4°C | 12°C 2015 | -3°C 2010 | 69% |
| Dec 19 | 7°C | 4°C | 13°C 2015 | -2°C 2010 | 69% |
| Dec 20 | 7°C | 4°C | 11°C 2017 | -2°C 2010 | 69% |
| Dec 21 | 7°C | 3°C | 11°C 2014 | -3°C 2010 | 68% |
| Dec 22 | 7°C | 3°C | 12°C 2015 | -2°C 2010 | 69% |
| Dec 23 | 7°C | 3°C | 11°C 2002 | -2°C 2010 | 69% |
| Dec 24 | 7°C | 3°C | 11°C 2016 | -2°C 2010 | 69% |
| Dec 25 | 7°C | 3°C | 11°C 2011 | -3°C 2010 | 69% |
| Dec 26 | 6°C | 3°C | 11°C 2011 | -2°C 1995 | 70% |
| Dec 27 | 6°C | 3°C | 11°C 2019 | -3°C 1995 | 70% |
| Dec 28 | 6°C | 3°C | 11°C 2012 | -3°C 1995 | 71% |
| Dec 29 | 6°C | 3°C | 12°C 2015 | -3°C 1995 | 71% |
| Dec 30 | 6°C | 3°C | 12°C 2015 | -1°C 2000 | 71% |
| Dec 31 | 6°C | 3°C | 11°C 2011 | -1°C 2001 | 70% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT).
- December 1
- sunrise 8:30 AM, sunset 4:06 PM
- December 31
- sunrise 8:54 AM, sunset 4:10 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.