Medan / Polonia weather by month
Averages and records for each calendar month at Medan / Polonia, Indonesia, from 1958 to 2025. The warmest month is May, averaging 32.8°C; the coolest is December at 30.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 31.1°C | 22.7°C | 34.4°C15 January 2012 | 17.2°C23 January 2022 | 24 / 43 |
| February | 31.8°C | 22.4°C | 39.0°C23 February 1979 | 18.0°C26 February 1981 | 13 / 44 |
| March | 32.6°C | 22.9°C | 36.3°C8 March 1987 | 19.0°C2 March 1979 | 25 / 43 |
| April | 32.7°C | 23.8°C | 36.4°C16 April 2013 | 21.0°C15 April 1979 | 19 / 42 |
| May | 32.8°C | 23.5°C | 36.6°C16 May 2004 | 21.0°C7 May 1979 | 22 / 43 |
| June | 32.6°C | 24.4°C | 38.0°C28 June 2007 | 20.0°C26 June 1986 | 19 / 44 |
| July | 32.6°C | 23.5°C | 36.5°C8 July 2001 | 20.0°C5 July 1981 | 23 / 43 |
| August | 32.5°C | 23.1°C | 37.2°C11 August 1986 | 20.0°C12 August 1981 | 17 / 43 |
| September | 31.7°C | 23.0°C | 36.0°C21 September 1980 | 20.4°C13 September 1986 | 20 / 42 |
| October | 31.3°C | 22.9°C | 37.4°C7 October 2003 | 20.0°C14 October 1958 | 20 / 44 |
| November | 31.1°C | 23.4°C | 37.8°C26 November 2012 | 20.2°C4 November 1986 | 16 / 43 |
| December | 30.7°C | 23.1°C | 34.4°C6 December 2016 | 19.4°C25 December 2021 | 22 / 43 |
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 13 to 25 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
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.