Daytime highs, nighttime lows and the warmest cities across the United Kingdom this September.
The United Kingdom, experiences maximum daytime temperatures in September ranging from 14°C (57°F) in Lerwick to 20°C (68°F) in Peterborough. Nighttime temperatures generally drop to 11°C (52°F) in Peterborough and 11°C (52°F) in Lerwick.
To get a sense of September's typical temperatures in the key spots of the United Kingdom, explore the map below. Click on a point for an in-depth look.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across the United Kingdom.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Average daytime highs in the United Kingdom during September reach about 20°C (68°F) in London.
Average overnight lows in the United Kingdom during September sit near 11°C (52°F) in London.
Data insights from our comprehensive database indicate that Peterborough is the city with the highest warmth. Daytime peaks average near 20°C (68°F), while the nights are characterized by a low temperature close to 11°C (52°F).
Our database indicates that in September, Lerwick is the city with the coolest temperatures in the United Kingdom. You can expect daytime highs of 14°C (57°F) and nighttime lows close to 11°C (52°F).
Across the United Kingdom, sunshine in September ranges from overcast in Eskdalemuir (95 hours) to moderately sunny in Guernsey (182 hours).
Across the United Kingdom, sea temperatures in September range from cold at 14°C (57°F) in Scarborough to cool at 18°C (64°F) in Brighton & Hove — so swimming conditions depend on which coast you pick.
We have much more information about the climate in the United Kingdom.
Weather and climate has detailed information for every country in the world. Are you going to the United Kingdom? Get detailed historical weather averages for many cities in the United Kingdom.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
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