December 2021

2021

🌡️ Temperature

In the UK, December 2021 was very hot. 🌡️

  • The average temperature in December 2021 was 6.4°C.
  • That's 2.3°C hotter than the average of 4.1°C.
  • This puts it in the 90th percentile for heat, as the 35th hottest December on record.
Distribution of average December temperatures (1659 - 2021)
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The hottest December ever was in 2015, when it averaged 9.7°C, and the coldest year was 1890 at -0.8°C.


🌧️ Rainfall

In the UK, December 2021 was wet. 🌧️

  • The total rainfall in December 2021 was 106.4mm.
  • That's 17.2mm wetter than the average of 89.2mm.
  • This puts it in the 69th percentile for rainfall, as the 78th wettest December on record.
Distribution of total December rainfall (1769 - 2021)
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The wettest December ever was in 1876, when rainfall totalled 193.9mm, and the driest year was 1788 at 8.9mm.


☀️ Sunlight

In the UK, December 2021 was very cloudy. ☁️

  • In December 2021 there were27.6 hours of sunshine.
  • That's 10.8 hours less sunshine than the average of 38.4 hours.
  • This puts it in the 5th percentile for sunshine, as the 5th least sunny December on record.
Distribution of December sunshine hours in (1920 - 2022)
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The sunniest December ever was in 2001, when there were 64 hours of sunshine, and the least sunny year was 2022 with 0 hours of sunshine.