London faces 6C lows as fog patches forecast
Met Office warns of chilly nights and potential mist later this week across the capital.
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Londoners are being advised to prepare for colder nights as temperatures are predicted to fall to 6C in some areas by the end of the week. The Met Office forecasts that Thursday night into Friday morning, 29-30 October 2026, will be among the coldest periods.
Coldest areas identified
London feels 12°C weekend as Met Office warns autumn storms
Met Office forecasts cooler weekend temperatures and unsettled weather for the rest of October, linking the pattern to a strong El Niño event.
Enfield, in north London, is projected to reach an overnight low of 6C on Thursday, 29 October 2026. In south-east London, Bromley could experience temperatures as low as 6C on both Thursday and Friday nights. These areas are identified as likely to have the chilliest conditions in the capital.
Further south, Croydon and Ealing in west London are expected to see overnight temperatures drop to 7C on Friday, 30 October 2026. Ealing had overnight lows of approximately 8C on Wednesday and Thursday. East London, around the Royal Docks and ExCeL area, is also forecast to experience lows of 7C on Thursday and Friday.
Central London is expected to remain slightly warmer, with predicted overnight lows of 9C on Wednesday and 8C on Thursday. Daytime temperatures across the capital are generally expected to be around 15C to 16C, with predominantly dry conditions and sunny spells forecast for Wednesday and Thursday, and Friday expected to be mostly sunny.
Storm Austen to bring heavy rain and wind to London
The Met Office forecasts gusts of up to 41mph and temperatures reaching 16C on Saturday.
Reasons for temperature variations
Differences in overnight temperatures across London can be attributed to factors such as urban development, green spaces, and surrounding landscapes. Central London often retains heat due to the urban heat island effect from buildings and roads. Conversely, suburban areas with more open spaces can cool down more rapidly under clear skies and light winds, leading to lower recorded temperatures.
Fog and mist warning
While widespread frost is not currently indicated, the Met Office has issued a warning for potential overnight mist and fog patches later in the week. These conditions may persist into the morning, potentially affecting visibility. Motorists are advised to exercise extra care during early morning journeys if visibility is reduced.
Questions this report answers
+What are the lowest temperatures forecast for London this week?
The Met Office forecasts that parts of London, specifically Enfield and Bromley, could experience overnight lows of 6C on Thursday, 29 October 2026. Bromley may also reach this temperature on Friday, 30 October 2026.
+Which areas are expected to be coldest on Friday night?
On Friday night, 30 October 2026, Croydon and Ealing in west London are forecast to have overnight lows of 7C. Bromley could also reach 6C on this night.
+What weather conditions should people expect besides cold temperatures?
The Met Office has warned of possible mist and fog patches developing later this week. These could affect visibility, particularly during early morning journeys, and motorists are advised to drive with caution.
+Why are some parts of London colder than others at night?
Temperature variations are influenced by local environments. Central London often benefits from the urban heat island effect, retaining heat from buildings and roads. Suburban areas with more open spaces can cool down faster, leading to lower overnight temperatures in places like Enfield and Bromley.
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