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Hourly Forecast
Daylight Hours
07:04
Sunrise
19:21
Sunset
Moon
Waxing Crescent
13:30
Moonrise
21:07
Moonset
Daily Forecast
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Humidity
Weather in St Austell today, September 16, 2026
Cloud cover dominates in St Austell on September 16, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. The morning sky stays heavily clouded, with cover near 60% around 09:00. Grey conditions set the early tone before any later change.
The day peaks near 17°C and cools toward 14°C. Relative humidity sits between 64% and 84%, reaching its peak around 21:00. Winds stay light, near 6.4 km/h by 10:00, so the day feels still more than breezy.
Afternoon skies stay clogged, peaking close to 100% near 19:00. The grey theme continues rather than clearing out. Visibility holds near 35.7 km, though it can fall to 28.8 km. Daylight runs from 07:04 to 19:21, lasting 12 hours 17 minutes of sunlight today.
The practical takeaway for St Austell on September 16, 2026 is a cloudy day that stays usable, just not particularly bright, around 17°C.
Frequently asked questions about weather in St Austell
How warm does it get in St Austell?
The warmest month in St Austell is July, with average high temperatures of 20°C. The average temperature during this period is around 17°C.
How cold does it get in St Austell?
The coldest month in St Austell is January, with average low temperatures of 6°C. The average temperature during this period is around 8°C.
What is the wettest time of year in St Austell?
The wettest month in St Austell is November, with an average of 108mm of precipitation.
What is the driest time of year in St Austell?
The driest month in St Austell is May, with an average of 61mm of precipitation.
