St Austell Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit St Austell.
Climate overview of St Austell
St Austell, Cornwall, United Kingdom, experiences moderate temperature changes through the seasons. August is the warmest month with daytime highs of 20°C (68°F), while February is the coolest at 10°C (50°F).
Annual rainfall is moderate at around 997 mm (39 in), with December being the wettest month. The city also has pleasant summers and cold winters. The sunniest month is May, with 7.4 hours of sunshine per day on average.
St Austell Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in St Austell - and find the best time to visit.
Monthly Temperature in St Austell
In St Austell, seasonal changes bring about a moderate variation in temperatures. Average daytime temperatures reach a pleasant 20°C (68°F) in August. In February, the coolest month of the year, temperatures drop to a chilly 10°C (50°F).
At night, temperatures range from around 14°C (57°F) in August to 5°C (41°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in St Austell
Generally, St Austell has a moderate amount of precipitation, averaging 997 mm (39 in) of rainfall annually. Despite minor fluctuations, St Austell enjoys fairly consistent precipitation throughout the year. In December, you can expect around 102 mm (4 in) of precipitation, while in September, St Austell receives about 69 mm (2.7 in). For more details, please visit our St Austell Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in St Austell
St Austell can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 7.4 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.2 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit St Austell
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: July and August
- Most sunshine: May and June
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in St Austell
What is the best time to visit St Austell?
July and August typically offer the most optimal weather in St Austell. In contrast, January, February, November and December tend to have less optimal conditions. St Austell has pleasant summers and cold winters.
What temperatures can I expect in St Austell?
Daytime highs range from 10°C (50°F) in February to 20°C (68°F) in August. Nighttime lows range from 5°C (41°F) to 14°C (57°F).
How much rain does St Austell get?
Annual rainfall is around 997 mm (39 in). December is the wettest month with 102 mm (4 in), while September is the driest with 69 mm (2.7 in).
How sunny is St Austell?
St Austell receives around 1,753 hours of sunshine per year. May is the sunniest month with 222 hours, while December is the cloudiest with just 65 hours.
St Austell 3-Day Forecast
St Austell 3-Day Forecast
St Austell on the map
St Austell is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
London
23°C (73°F) Bath22°C (72°F) York22°C (72°F) Manchester
21°C (70°F) Edinburgh
19°C (66°F) Glasgow19°C (66°F) Torquay20°C (68°F) Blackpool19°C (66°F) 
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