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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Lewes's climate page.
Lewes Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
19°C (66°F)
Water Temperature
18°C (64°F) *
Chance of Rain
41%
Precipitation
67 mm (2.6 in)
Rainy days
12 days
Best Places in the United Kingdom in September
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in September →
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What to Wear in Lewes in September
For Lewes in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Expect water temperatures of around 18°C (64°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items.What To Do in Lewes in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Lewes's climate page.
Temperature Rainfall Water Temp
See the full Lewes climate overview or explore weather in the United Kingdom.
