London weather in 2023
London weather in 2023, with 365 daily observations from Open-Meteo archive data.
Interactive graph
Open London in the interactive graph
Use the graph view to inspect 2023 alongside other available years for London.
Year summary
In 2023, London averaged 15.5 C for daily highs and 7.9 C for daily lows.
A 1991-2020 normal is not available for this location yet, so this page compares 2023 with the 2023-2025 archive baseline. The 2023 average daily high was -0.1 C from that baseline, and total precipitation was +18.3 mm from the baseline total.
The warmest month was June, with an average high of 23.4 C, while January had the lowest average low at 1.6 C.
The wettest month was March, totaling 98.6 mm. The hottest day reached 31.4 C on September 9, 2023.
Monthly averages and precipitation
| Month | Avg low C | Avg high C | Rain and snow mm | Days |
|---|---|---|---|---|
| January | 1.6 | 8.3 | 58.6 | 31 |
| February | 2.7 | 9.9 | 11.9 | 28 |
| March | 4.2 | 10.5 | 98.6 | 31 |
| April | 4.5 | 13.2 | 71.4 | 30 |
| May | 8.1 | 17.2 | 36.6 | 31 |
| June | 12.5 | 23.4 | 39.5 | 30 |
| July | 13.6 | 21.2 | 90.0 | 31 |
| August | 13.1 | 21.7 | 55.9 | 31 |
| September | 13.8 | 23.1 | 57.7 | 30 |
| October | 10.0 | 17.0 | 91.8 | 31 |
| November | 4.9 | 10.7 | 90.0 | 30 |
| December | 5.2 | 9.8 | 79.0 | 31 |
Daily records in 2023
| Record | Date | Value |
|---|---|---|
| Hottest day | September 9, 2023 | 31.4 C |
| Coldest night | January 17, 2023 | -4.7 C |
| Wettest day | September 20, 2023 | 27.3 mm |
Related pages
Weather data source: Open-Meteo Archive API. City metadata source: GeoNames cities15000.