Orkney Weather in December

NASA POWER reanalysis for the half-degree grid cell around Orkney, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 31°C on December 1 to 32°C on December 31, and lows from 15°C to 17°C. Normal precipitation for the month is 84 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: 31°C
Average low: 16°C
Precipitation: 84 mm
Reanalysis high: 40°CDec 7, 2015
Reanalysis low: 5°CDec 1, 1995
Daylight: 13 h 43 min to 13 h 49 min
Cloud cover: 63%
Humidity: 49%
Dew point: 10°C
Wind: 14.4 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	31°C	15°C	38°C 2019	5°C 1995	42%
Dec 2	31°C	15°C	37°C 2019	9°C 1995	44%
Dec 3	31°C	15°C	36°C 2016	10°C 2001	45%
Dec 4	31°C	16°C	37°C 2016	7°C 1998	46%
Dec 5	31°C	16°C	38°C 2015	9°C 1998	47%
Dec 6	31°C	16°C	39°C 2015	12°C 2010	47%
Dec 7	31°C	16°C	40°C 2015	12°C 1993	47%
Dec 8	31°C	16°C	36°C 1997	13°C 2017	47%
Dec 9	31°C	16°C	36°C 1997	14°C 2007	48%
Dec 10	31°C	16°C	38°C 1997	12°C 2018	47%
Dec 11	31°C	16°C	38°C 2015	12°C 2019	48%
Dec 12	31°C	16°C	37°C 1997	8°C 2005	48%
Dec 13	31°C	16°C	38°C 1997	11°C 2005	48%
Dec 14	31°C	16°C	38°C 2018	12°C 2017	49%
Dec 15	31°C	16°C	38°C 2006	10°C 2011	49%
Dec 16	31°C	16°C	38°C 2018	9°C 2019	49%
Dec 17	32°C	16°C	38°C 2015	12°C 2010	48%
Dec 18	32°C	16°C	37°C 2003	9°C 1997	47%
Dec 19	32°C	16°C	38°C 2015	9°C 1996	47%
Dec 20	32°C	16°C	37°C 2015	11°C 2007	47%
Dec 21	32°C	17°C	37°C 1994	12°C 1998	49%
Dec 22	32°C	17°C	37°C 1994	11°C 1998	49%
Dec 23	32°C	17°C	38°C 2018	13°C 1995	50%
Dec 24	32°C	17°C	39°C 2015	13°C 2002	50%
Dec 25	32°C	17°C	39°C 2018	11°C 1994	50%
Dec 26	32°C	17°C	39°C 2018	10°C 2001	50%
Dec 27	32°C	17°C	39°C 2018	7°C 2003	49%
Dec 28	32°C	17°C	36°C 2017	13°C 2003	49%
Dec 29	32°C	17°C	36°C 2012	12°C 1993	48%
Dec 30	32°C	17°C	36°C 2012	13°C 2000	47%
Dec 31	32°C	17°C	37°C 2004	12°C 2006	46%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+2).

December 1: sunrise 5:11 AM, sunset 6:54 PM
December 31: sunrise 5:22 AM, sunset 7:11 PM

Every day of December: sun and moon

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.