St Austell Weather in December
December in St Austell brings low temperatures, with daytime highs of 11°C (52°F) and nights around 6°C (43°F). It's also the wettest month of the year, so an umbrella is a must.
Rainfall in St Austell in December
As the month with the most rain, you'll want to have an umbrella with you to manage the frequent showers. Past climate data indicates that roughly 21 days will see rain, totalling around 102 mm (4 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in St Austell in December
December in St Austell brings typical temperatures with highs around 11°C (52°F) and lows of 6°C (43°F). December is part of the winter season. Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. At 6°C (43°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in St Austell in December
The month has fewer sunny days, with around 65 hours of sunshine.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for St Austell.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our St Austell's climate page.
St Austell Temperature in December
Min Temperature
6°C (43°F)
Max Temperature
11°C (52°F)
Chance of Rain
68%
Precipitation
102 mm (4 in)
Rainy days
21 days
Sunshine
65 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in St Austell typically stay consistent throughout December, with daily highs averaging around 11°C (52°F). Nights are cold, with lows around 5°C (41°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for St Austell in December
Browse day-by-day weather records for St Austell spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
St Austell historical weather extremes in December
Our historical data for St Austell spans 1976 to 2025, revealing these weather extremes.
- St Austell recorded its highest December temperature of 16°C (61°F) on December 2, 1985.
- The coldest December day was on December 31, 1978, with a maximum of -2°C (28°F).
- The lowest overnight temperature recorded in December was -5°C (23°F) (December 31, 1996).
- Peak precipitation in December occurred on December 18, 1999, when 69 mm (2.7 in) of precipitation was measured.
Best Places in the United Kingdom in December
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in St Austell in December
The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in St Austell in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our St Austell's climate page.
See the full St Austell climate overview or explore weather in the United Kingdom.
