Weather in Cornwall in December

General weather information about Cornwall

Average annual temperature is 11.6 °C

Absolute maximum temperature: 28.8 °C

Absolute minimum temperature: -1.9 °C

Number of sunny days: 142 days

Number of rainy days: 223 days

Look at detailed online map of Cornwall

* Weather data for Cornwall Australia is based on climate observations for 2026 year

Cornwall air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)27.128.824.521.016.815.715.816.823.024.326.926.5
Average daytime temperature (°C)20.320.718.316.713.111.912.713.316.116.518.419.8
Average temperature (°C)15.515.513.512.08.88.08.58.310.510.713.414.5
Average night temperature (°C)11.911.59.68.65.35.05.14.55.95.69.39.6
Absolute minimum temperature (°C)7.96.84.84.21.0-0.6-0.1-1.91.0-0.13.25.9

Cornwall monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)15.014.013.011.010.09.09.011.012.013.014.015.0
Daylight mean duration (h)14.813.712.411.09.89.29.510.511.813.214.515.1
Daylight minimum duration (h)14.013.011.010.09.09.09.09.011.012.013.014.0
Sunshine mean duration (h)10.310.68.77.87.16.46.98.09.710.29.710.8
Precipitation (mm)86681987034123263624909086
Sunny days51171319141813161259
Rainy days261724171216131814192522
Snow days000000000000

Best time to visit Cornwall:

The largest precipitation sum in Cornwall is at

  • March — 198(mm)
  • June — 123(mm)