St Mellion Weather in September

St Mellion in September averages 19°C (66°F) during the day and 11°C (52°F) at night. This is the driest month of the year, and part of the summer season.

Rainfall in St Mellion in September

As the driest month, it's a great time for hiking and exploring the area. Past climate data indicates that roughly 15 days will see rain, totalling around 70 mm (2.8 in) for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.

Temperature in St Mellion in September

September in St Mellion brings typical temperatures with highs around 19°C (66°F) and lows of 11°C (52°F). The summer season is characteristic of September. Conditions are often most pleasant around the middle of the day. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in St Mellion in September

The month experiences a moderate amount of sunlight, with 162 hours of sunshine. This provides a nice balance between sunshine and clouds.

Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.