Lewes Weather in September

September in Lewes sees daytime temperatures around 19°C (66°F) and lows of 13°C (55°F) at night. With around 67 mm (2.6 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Lewes in September

Typically, about 12 days will experience rainfall, with an average of 67 mm (2.6 in) for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Lewes in September

Daytime temperatures in Lewes reach 19°C (66°F) in September, dropping to 13°C (55°F) at night. September is part of the summer season. Conditions are often most pleasant around the middle of the day. 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.

Average water temperature in September

The water temperature is 18°C (64°F), chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Lewes.