United Kingdom weather in September - temperature, rain and is it a good time to visit?

September is one of the best months for a holiday in United Kingdom.
Daytime
18°
Night
11°
☀️ Day length
12 h 47 min
Chance of rain
46%
Thunder days
2%
Humid days
21%
WEATHER THROUGH THE YEARUnited Kingdom - September vs the year10°13°16°19°11°22°13°20°13°18°11°15°11°CHANCE OF RAIN (%)645752484945485446566459JanFebMarAprMayJunJulAugSepOctNovDecWARMESTJul (22°)COLDESTJan (8°)DRIESTJun (45%)WETTESTJan (64%)world-prices.com · 2026-07-08 · ★ best months
In September, United Kingdom averages about 18° during the day and 11° at night. There's a moderate chance of rain (about 46%).

United Kingdom weather all year - average temperatures and rain

MonthDayNightChance of rain
January 8℃3℃64%
February 8℃2℃57%
March 10℃3℃52%
April 13℃5℃48%
May ★ 16℃8℃49%
June ★ 19℃11℃45%
July ★ 22℃13℃48%
August ★ 20℃13℃54%
September 18℃11℃46%
October ★ 15℃9℃56%
November 11℃5℃64%
December 9℃4℃59%
★ - months most often recommended for travel

Where is it warmest in United Kingdom in September? Weather by city

PlaceDayNight🌊 SeaChance of rain
London 19℃11℃-39%
Sheffield 19℃10℃-46%
Coventry 19℃11℃-31%
Liverpool 18℃11℃17℃51%
Manchester 18℃10℃-56%
York 18℃9℃-36%
Cardiff 18℃12℃18℃53%
Jersey 18℃13℃19℃54%
Newcastle 17℃9℃-48%
Bristol 17℃10℃18℃48%
Travelling soon? Check the live 14-day weather forecast for United Kingdom.

United Kingdom weather - other months

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember