Hannover Marathon: race-day weather at past editions
Hannover Marathon: at 9:00 on race day the temperature averaged 9 °C over 33 editions from 1991 to 2025 (from 0 °C to 15 °C); rain fell during race hours (08:00–14:00) in 6 editions (18%). Source: ERA5 reanalysis (Copernicus), data to 2025.
9 °Caverage at 9:00 on race day
6 / 33editions with rain 08–14 h
6 / 33editions with ≥ 20 °C by 14:00
24 °C (2000)warmest race morning–midday
Climate, not a forecast: these are statistics of past weather, not a forecast for the next edition.
Climate of the usual dates
Weather around the usual race date (2 May, ± 3 days) in 1991–2025:
- 10 °C — average temperature at 9:00
- 24% — share of mornings with rain 08–14 h
- 16 °C — average daily maximum
Average daily maximum on these dates: 16.7 °C in 1991–2005, 16.1 °C in 2011–2025.
Weather at past editions
| Year | Date | 9:00 | Max 08–14 | Rain 08–14 |
|---|---|---|---|---|
| 2025 | 6 April | 3 °C | 8 °C | 0.0 mm |
| 2024 | 14 April | 14 °C | 15 °C | 0.0 mm |
| 2023 | 26 March | 8 °C | 9 °C | 0.9 mm |
| 2022 | 3 April | 0 °C | 5 °C | 0.3 mm |
| 2019 | 7 April | 10 °C | 19 °C | 0.0 mm |
| 2018 | 8 April | 13 °C | 23 °C | 0.0 mm |
| 2017 | 9 April | 8 °C | 18 °C | 0.0 mm |
| 2016 | 10 April | 9 °C | 15 °C | 0.0 mm |
| 2015 | 19 April | 5 °C | 14 °C | 0.0 mm |
| 2014 | 27 April | 14 °C | 18 °C | 1.2 mm |
| 2013 | 5 May | 13 °C | 19 °C | 0.0 mm |
| 2012 | 6 May | 7 °C | 9 °C | 0.1 mm |
| 2011 | 8 May | 15 °C | 22 °C | 0.0 mm |
| 2010 | 2 May | 8 °C | 12 °C | 0.0 mm |
| 2009 | 3 May | 12 °C | 18 °C | 0.4 mm |
| 2008 | 4 May | 12 °C | 17 °C | 0.0 mm |
| 2007 | 6 May | 11 °C | 20 °C | 0.0 mm |
| 2006 | 7 May | 14 °C | 22 °C | 0.0 mm |
| 2005 | 8 May | 7 °C | 10 °C | 1.0 mm |
| 2004 | 2 May | 12 °C | 12 °C | 1.4 mm |
| 2003 | 4 May | 12 °C | 20 °C | 0.0 mm |
| 2002 | 5 May | 10 °C | 14 °C | 0.3 mm |
| 2001 | 6 May | 8 °C | 12 °C | 0.4 mm |
| 2000 | 14 May | 15 °C | 24 °C | 0.0 mm |
| 1999 | 16 May | 8 °C | 13 °C | 0.0 mm |
| 1998 | 5 April | 10 °C | 13 °C | 0.4 mm |
| 1997 | 6 April | 2 °C | 6 °C | 0.7 mm |
| 1996 | 14 April | 4 °C | 10 °C | 0.0 mm |
| 1995 | 14 May | 6 °C | 11 °C | 0.2 mm |
| 1994 | 29 May | 9 °C | 12 °C | 0.0 mm |
| 1993 | 18 April | 10 °C | 14 °C | 0.2 mm |
| 1992 | 16 April | 4 °C | 4 °C | 3.7 mm |
| 1991 | 12 April | 10 °C | 19 °C | 0.0 mm |
How to read these numbers
- ERA5 gives daytime highs about 1–2.5 °C below nearby weather stations, so on warm race days runners felt more heat than the numbers here show; we do not correct for this.
- Edition window: the race day; 9:00 local time is taken as the typical start.
- Dates of past editions: Wikidata and Wikipedia (de, en, fr, nl); cancelled editions (e.g. 2020–21) are not counted.
Dates and sources
Coordinates: 52.374, 9.739; ERA5 cell centred at 52.25, 9.75 (average ground height of the cell 100 m).