Updated: 2026-08-01
The coldest temperature ever recorded at the point closest to London — the Met Office station at High Beach, Essex — is -10.8 °C, measured on 12 January 1987. That morning, the thermometer at this site dropped below the previous record and has not been beaten since. It remains the absolute minimum for the station across all years with data (1978–2025).
That's the coldest minimum temperature in the entire observed period.The point of measurement nearest London is the Met Office station at High Beach, in the county of Essex, sitting at an altitude of 110 m, roughly 20.8 km from the city centre. These are the records from that station—not a reading taken in London itself. Urban warmth, local topography, or the influence of the Thames can make the city’s actual air temperatures differ from this nearby rural site. But as the closest official observing point, its long record is the most reliable proxy we have for evaluating how cold it can get in the London area.
That record of -10.8 °C occurred during the notorious cold snap of January 1987. The same event also produced the second-coldest night in the station’s history, with a minimum of -10.5 °C on the following day, 13 January 1987. It was a severe, prolonged freeze that still stands out in the UK’s modern climate record.
These are the five lowest minimum temperatures registered at High Beach since 1978. The table also shows the daily maximum temperature recorded on those same dates, giving a sense of how unusual the entire day was.
| Date | Min temp (°C) | Max temp (°C) |
|---|---|---|
| 1987-01-12 | -10.8 | -4.0 |
| 1986-02-10 | -10.5 | 0.5 |
| 1987-01-13 | -10.5 | -7.6 |
| 1981-12-13 | -10.0 | 1.0 |
| 1979-01-03 | -9.9 | 0.1 |
Notice that the two most extreme nights, 12 and 13 January 1987, both had sub-zero daytime maximums. On 12 January, the mercury did not climb above -4.0 °C—exceptional conditions where the whole day stayed below freezing. The other freezing days on this list had milder daytime temperatures, but their nighttime minima still dropped below -9.9 °C.
To see the normal seasonal cycle of cold extremes, here is the coldest temperature ever recorded for each calendar month, along with the average daily minimum temperature for that month across the entire station history.
| Month | Record minimum (°C) | Average minimum (°C) |
|---|---|---|
| 01 | -10.8 | 1.3 |
| 02 | -10.5 | 1.4 |
| 03 | -6.3 | 2.9 |
| 04 | -3.9 | 4.4 |
| 05 | -2.1 | 7.2 |
| 06 | 1.3 | 10.2 |
| 07 | 5.3 | 12.4 |
| 08 | 4.0 | 12.2 |
| 09 | -0.2 | 10.1 |
| 10 | -3.2 | 7.5 |
| 11 | -6.0 | 4.1 |
| 12 | -10.0 | 2.3 |
The pattern is clear: January and February are the months where deep freezes are most likely. But note that December also holds a very low record of -10.0 °C, and even March has dropped to -6.3 °C. These are not just quaint historical oddities—they are the kind of extreme events that stressed energy grids and disrupted transport in the past.
The chart below (rendered as an interactive figure from the data in the table) tracks the lowest minimum temperature recorded each year at High Beach. You can see how winter severity fluctuates: some years barely reach -3 °C, while others plunge below -9 °C.
The figure above shows the complete annual series of lowest minimum temperatures. The table below lists the most notable years for reference; the full series comes from Met Office.
| Year | Lowest minimum (°C) |
|---|---|
| 1987 | -10.8 |
| 1990 | -3.5 |
| 2002 | -3.0 |
| 2011 | -4.3 |
| 2014 | -2.8 |
| 2015 | -4.2 |
| 2020 | -2.5 |
The 1980s were clearly the coldest decade in this record: 1981, 1986, and 1987 all produced minima of -10.0 °C or lower. Since 1991, no year has matched that intensity, though 2012 did reach -8.8 °C and 2010 hit -7.7 °C. The most recent winters have been milder, with 2020 only reaching -2.5 °C, the highest minimum of the entire series.
These are the data, precisely as measured at High Beach, Essex. The station’s record covers from August 1978 to December 2025. While London itself may have slightly different conditions due to urban heating or local geography, this nearby site gives the most consistent and complete picture we have of how cold it can actually get within the wider London region.
Source: Met Office (official national meteorological service), MIDAS station High Beach, Essex, UK. Period: 1978–2025.
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© 2026 HistoClima · data: Met Office (OGL v3.0) · not affiliated with Met Office · citation permitted with source.