Uccle climate by month
Averages and records for each calendar month at Uccle, Belgium, from 1833 to 2026. The warmest month is July, averaging 23.0°C; the coolest is January at 4.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 4.9°C | −0.5°C | 15.3°C16 January 1947 | −21.1°C25 January 1881 | 176 / 194 |
| February | 6.3°C | −0.1°C | 20.2°C26 February 2019 | −18.3°C7 February 1895 | 174 / 194 |
| March | 9.9°C | 1.9°C | 24.2°C29 March 1968 | −13.6°C14 March 1845 | 187 / 194 |
| April | 13.9°C | 4.5°C | 28.7°C17 April 1949 | −5.0°C9 April 1837 | 187 / 194 |
| May | 18.3°C | 8.0°C | 34.1°C24 May 1922 | −2.2°C8 May 1944 | 190 / 194 |
| June | 21.3°C | 11.0°C | 38.8°C27 June 1947 | 0.3°C1 June 1936 | 189 / 194 |
| July | 23.0°C | 12.8°C | 39.7°C25 July 2019 | 4.4°C1 July 1906 | 192 / 194 |
| August | 22.6°C | 12.7°C | 36.5°C19 August 1932 | 4.7°C27 August 1833 | 191 / 194 |
| September | 19.4°C | 10.3°C | 34.9°C4 September 1929 | 0.0°C24 September 1931 | 185 / 194 |
| October | 14.4°C | 6.9°C | 27.8°C6 October 1921 | −6.8°C28 October 1931 | 185 / 192 |
| November | 8.8°C | 3.0°C | 20.4°C7 November 1955 | −12.8°C27 November 1890 | 175 / 192 |
| December | 5.6°C | 0.5°C | 16.7°C16 December 1989 | −17.7°C9 December 1879 | 169 / 193 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 169 to 192 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.