December is one of the cooler months of the year in Connahs Quay, with average highs near 6.4°C and lows around 2.1°C (mean 4.3°C). It is a relatively wet time of year, averaging 90 mm of rainfall and 95% relative humidity across the period.
December is one of the cooler months of the year in Connahs Quay. Across 45 years of records, the warmest December in Connahs Quay was 2015 — when the month averaged 8.1°C — while the coldest was 1981 at -0.5°C. Typical December days reach 6.4°C with nights near 2.1°C. The long-term trend is warming, about 0.5°C per decade.
December is a relatively wet time of year in Connahs Quay, averaging 90 mm of rainfall. The wettest December on record was 2012 with 154 mm, while the driest was 1991 at 38 mm.
Relative humidity in Connahs Quay during December averages 95%. The most humid December was 2010 at 97%, and the least humid was 2011 at 92%.
December receives about 0.5 kWh/m²/day of solar energy in Connahs Quay. The sunniest Decembers were 2008, 2010 and 2022, among others at 0.6 kWh/m²/day, and the cloudiest were 2011, 2015 and 2021, among others at 0.4.
Average wind speed in Connahs Quay during December is 3.2 m/s. The windiest December was 2015 at 4.4 m/s, while the calmest was 2010 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.9°C | 3.6°C | 4.2°C | 4.8°C | 5.3°C | +1.4°C |
| Avg High | 6.0°C | 5.8°C | 6.2°C | 7.1°C | 7.2°C | +1.2°C |
| Avg Low | 1.8°C | 1.4°C | 2.1°C | 2.6°C | 3.3°C | +1.5°C |
| Avg Rain | 81 mm | 87 mm | 88 mm | 92 mm | 111 mm | +30 mm |
December temperatures in Connahs Quay have risen by about 2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -9.1°C (1981) to a record high of 13.7°C (2025).
Rainfall in December is a relatively wet time of year, averaging 90 mm, with a wettest year of 154 mm.
A quieter season to visit Connahs Quay
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Connahs Quay. That said, December — with days averaging 6.4°C and nights around 2.1°C (mean 4.3°C) and higher rainfall (90 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 7.9°C | 5.8°C | 3.7°C | 13.7°C | -0.9°C | 113 mm | 95% | 3.2 m/s | — |
| 2024 | 8.3°C | 6.3°C | 4.3°C | 12.7°C | -1.2°C | 99 mm | 94% | 3.4 m/s | 0.5 |
| 2023 | 7.9°C | 6.0°C | 4.2°C | 12.1°C | -2.0°C | 130 mm | 94% | 3.9 m/s | 0.5 |
| 2022 | 5.4°C | 3.3°C | 1.2°C | 12.2°C | -5.1°C | 74 mm | 96% | 2.5 m/s | 0.6 |
| 2021 | 7.5°C | 5.6°C | 3.6°C | 12.9°C | -2.2°C | 108 mm | 95% | 3 m/s | 0.4 |
| 2020 | 6.5°C | 4.5°C | 2.5°C | 11.8°C | -1.7°C | 140 mm | 96% | 2.9 m/s | 0.5 |
| 2019 | 7.4°C | 5.0°C | 2.7°C | 12.2°C | -1.4°C | 78 mm | 95% | 3.2 m/s | 0.5 |
| 2018 | 8.1°C | 6.1°C | 4.0°C | 12.0°C | -2.8°C | 105 mm | 95% | 3.1 m/s | 0.5 |
| 2017 | 6.6°C | 4.5°C | 2.4°C | 11.9°C | -4.1°C | 90 mm | 95% | 3.1 m/s | 0.5 |
| 2016 | 7.7°C | 5.5°C | 3.3°C | 12.2°C | -1.2°C | 40 mm | 96% | 2.6 m/s | 0.5 |
| 2015 🔥 | 10.6°C | 8.1°C | 5.6°C | 13.1°C | 1.4°C | 139 mm | 92% | 4.4 m/s | 0.4 |
| 2014 | 6.8°C | 4.7°C | 2.6°C | 11.6°C | -1.9°C | 87 mm | 93% | 3.4 m/s | 0.5 |
| 2013 | 8.3°C | 5.6°C | 3.0°C | 12.0°C | 0.0°C | 61 mm | 93% | 3.8 m/s | 0.5 |
| 2012 🌧️ | 5.9°C | 3.8°C | 1.7°C | 11.2°C | -3.2°C | 154 mm | 95% | 3.2 m/s | 0.5 |
| 2011 | 7.6°C | 5.4°C | 3.2°C | 11.3°C | 0.0°C | 118 mm | 92% | 4 m/s | 0.4 |
| 2010 | 1.6°C | -0.4°C | -2.4°C | 6.2°C | -6.7°C | 48 mm | 97% | 2 m/s | 0.6 |
| 2009 | 4.3°C | 2.5°C | 0.6°C | 10.5°C | -4.2°C | 95 mm | 96% | 2.6 m/s | 0.5 |
| 2008 | 5.2°C | 3.1°C | 0.9°C | 10.7°C | -2.8°C | 62 mm | 96% | 2.4 m/s | 0.6 |
| 2007 | 6.6°C | 4.3°C | 2.0°C | 12.6°C | -3.4°C | 97 mm | 94% | 3.5 m/s | 0.5 |
| 2006 | 8.2°C | 5.9°C | 3.6°C | 12.7°C | -0.5°C | 123 mm | 94% | 3.5 m/s | 0.5 |
| 2005 | 6.6°C | 4.5°C | 2.5°C | 10.2°C | -2.8°C | 63 mm | 96% | 2.6 m/s | 0.5 |
| 2004 | 7.4°C | 5.3°C | 3.2°C | 10.8°C | -2.4°C | 62 mm | 95% | 2.9 m/s | 0.5 |
| 2003 | 6.3°C | 4.0°C | 1.6°C | 11.6°C | -3.7°C | 94 mm | 95% | 2.8 m/s | 0.5 |
| 2002 | 5.8°C | 4.2°C | 2.6°C | 10.7°C | -2.0°C | 123 mm | 96% | 3 m/s | 0.5 |
| 2001 | 5.5°C | 3.0°C | 0.5°C | 12.1°C | -2.9°C | 52 mm | 95% | 2.8 m/s | 0.6 |
| 2000 | 6.3°C | 4.7°C | 3.1°C | 12.3°C | -3.3°C | 108 mm | 95% | 3.5 m/s | 0.5 |
| 1999 | 6.1°C | 4.3°C | 2.4°C | 11.2°C | -3.5°C | 129 mm | 92% | 3.9 m/s | 0.5 |
| 1998 | 7.3°C | 4.8°C | 2.4°C | 12.9°C | -2.9°C | 76 mm | 95% | 3.1 m/s | 0.5 |
| 1997 | 6.8°C | 4.8°C | 2.9°C | 12.0°C | -1.7°C | 114 mm | 95% | 3.3 m/s | 0.4 |
| 1996 | 3.8°C | 1.8°C | -0.3°C | 9.6°C | -3.7°C | 50 mm | 96% | 2.7 m/s | 0.5 |
| 1995 | 2.9°C | 0.8°C | -1.4°C | 12.0°C | -8.0°C | 71 mm | 95% | 2.5 m/s | 0.5 |
| 1994 | 7.9°C | 5.5°C | 3.2°C | 13.3°C | -1.9°C | 111 mm | 94% | 3.6 m/s | 0.5 |
| 1993 | 6.4°C | 4.1°C | 1.8°C | 11.7°C | -2.8°C | 128 mm | 93% | 4 m/s | 0.4 |
| 1992 | 5.0°C | 2.8°C | 0.6°C | 11.6°C | -5.8°C | 65 mm | 95% | 2.8 m/s | 0.5 |
| 1991 | 5.9°C | 3.9°C | 1.8°C | 11.9°C | -4.1°C | 38 mm | 94% | 3 m/s | 0.5 |
| 1990 | 5.5°C | 3.1°C | 0.8°C | 10.9°C | -2.5°C | 90 mm | 94% | 3.2 m/s | 0.5 |
| 1989 | 4.8°C | 3.0°C | 1.2°C | 10.8°C | -3.5°C | 109 mm | 96% | 2.7 m/s | 0.5 |
| 1988 | 8.3°C | 6.4°C | 4.6°C | 11.7°C | -1.5°C | 44 mm | 94% | 3.4 m/s | 0.4 |
| 1987 | 6.1°C | 4.3°C | 2.5°C | 11.9°C | -3.5°C | 42 mm | 96% | 3 m/s | 0.5 |
| 1986 | 7.2°C | 4.6°C | 2.1°C | 12.9°C | -1.6°C | 115 mm | 93% | 4 m/s | 0.5 |
| 1985 | 7.2°C | 5.3°C | 3.4°C | 13.1°C | -5.0°C | 89 mm | 94% | 3.2 m/s | 0.5 |
| 1984 | 6.2°C | 4.2°C | 2.1°C | 11.2°C | -2.2°C | 83 mm | 95% | 2.7 m/s | 0.5 |
| 1983 | 7.1°C | 4.7°C | 2.4°C | 12.1°C | -2.1°C | 97 mm | 94% | 3.5 m/s | — |
| 1982 | 5.6°C | 3.2°C | 0.8°C | 10.3°C | -2.6°C | 78 mm | 94% | 3.3 m/s | — |
| 1981 ❄️ | 1.7°C | -0.5°C | -2.8°C | 9.6°C | -9.1°C | 67 mm | 96% | 2.7 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 6.4°C with lows near 2.1°C (mean 4.3°C), based on 45 years of NASA POWER data.
December averages 90 mm of rainfall in Connahs Quay, a relatively wet time of year. The wettest on record was 154 mm in 2012.
The hottest December reached 13.7°C in 2025. The coldest dipped to -9.1°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2°C. Daytime highs moved from 5.6°C to 7.4°C and overnight lows from 1.2°C to 3.4°C over the same span.
December is one of the cooler months of the year in Connahs Quay and a relatively wet time of year, so plan for around 6.4°C daytime highs and 2.1°C at night.
Not quite — December is the 3rd coolest month in Connahs Quay, averaging 4.3°C.
For December in Connahs Quay, pack warm layers and a jacket for chilly mornings, with typical highs of 6.4°C and lows of 2.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 95% — quite humid.
Average wind speed in December is 3.2 m/s. The windiest December on record averaged 4.4 m/s (2015).
The wettest December on record was 2012 with 154 mm. On average, December sees 90 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Connahs Quay behaves each December, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for December specifically, along with year-by-year records and how the month has changed over the decades.
