St. Agnes Weather in September

September in St. Agnes brings pleasant temperatures around 19°C (66°F) during the day, dropping to 13°C (55°F) at night, with quite a bit of rainfall expected, averaging around 69 mm (2.7 in) for the month.

Rainfall in St. Agnes in September

The climate data from previous years indicates about 16 days of rain, averaging 69 mm (2.7 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.

Temperature in St. Agnes in September

Temperatures in St. Agnes in September top out at 19°C (66°F) and drop to 13°C (55°F) overnight. The month of September belongs to the summer season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights cool down to 13°C (55°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in St. Agnes in September

You can expect a moderate amount of sunlight, with approximately 165 hours. This means a pleasant mix of sun and overcast.

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. Agnes.