Temperature in Cornwall in December

Daytime highs, nighttime lows and the warmest cities in Cornwall, the United Kingdom this December.

Cornwall, the United Kingdom, a region in the United Kingdom, experiences maximum daytime temperatures in December ranging from 10°C (50°F) in Gunnislake to 12°C (54°F) in St Just. Nighttime temperatures generally drop to 9°C (48°F) in St Just and 4°C (39°F) in Gunnislake. December is part of the winter season

What is the temperature of the different cities in Cornwall, the United Kingdom in December?

Explore the map below to discover average December temperatures at the top destinations in Cornwall. For a deeper dive, simply click on any destination dot.

Select a Month

Check the conditions for any month of the year.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

For a detailed overview over the year and the best time to visit Cornwall, check out our Cornwall's climate page.

See also: Cornwall weather by month.

Best Places to Visit in Cornwall in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Cornwall.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in December: blue is cold, red is hot.

See all December weather averages, cities and regions in Cornwall

Cornwall temperatures in December: frequently asked questions

How hot does it get in Cornwall, the United Kingdom in December?

Expect daytime temperatures around 11°C (52°F) in Newquay. That makes December a low month for Cornwall, the United Kingdom.

How cold does it get at night in Cornwall, the United Kingdom in December?

Average overnight lows in Cornwall, the United Kingdom during December sit near 6°C (43°F) in Newquay.

What is the warmest city in December in Cornwall, the United Kingdom?

St Just tops the warmest city list in our database with average maximum daytime temperatures around 12°C (54°F) and a minimum nighttime temperature of around 9°C (48°F).

What is the coldest city in December in Cornwall, the United Kingdom?

Our database indicates that in December, Gunnislake is the city with the coolest temperatures in Cornwall, the United Kingdom. You can expect daytime highs of 10°C (50°F) and nighttime lows close to 4°C (39°F).

How much sun does Cornwall, the United Kingdom get in December?

Most cities witness limited sunny days; expect roughly 65 hours of sunlight in Newquay. This subdued sunlight is perfect for those who prefer cooler, cloudier weather rather than intense sunny days.

Interested in more climate information?

We have much more information about the climate in Cornwall.

Weather and climate has detailed information for every country in the world. Are you going to the United Kingdom? Get detailed historical weather averages for many cities in the United Kingdom.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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