Portugal Half Marathon: race-day weather at past editions
Portugal Half Marathon: at 9:00 on race day the temperature averaged 19 °C over 25 editions from 2000 to 2025 (from 14 °C to 22 °C); rain fell during race hours (08:00–14:00) in 2 editions (8%). Source: ERA5 reanalysis (Copernicus), data to 2025.
19 °Caverage at 9:00 on race day
2 / 25editions with rain 08–14 h
20 / 25editions with ≥ 20 °C by 14:00
28 °C (2017)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 (4 October, ± 3 days) in 1991–2025:
- 18 °C — average temperature at 9:00
- 9% — share of mornings with rain 08–14 h
- 22 °C — average daily maximum
Average daily maximum on these dates: 21.8 °C in 1991–2005, 23.3 °C in 2011–2025.
Weather at past editions
| Year | Date | 9:00 | Max 08–14 | Rain 08–14 |
|---|---|---|---|---|
| 2025 | 26 October | 17 °C | 21 °C | 0.0 mm |
| 2024 | 6 October | 21 °C | 22 °C | 0.6 mm |
| 2023 | 8 October | 20 °C | 28 °C | 0.0 mm |
| 2022 | 9 October | 17 °C | 21 °C | 0.0 mm |
| 2021 | 17 October | 19 °C | 21 °C | 0.0 mm |
| 2019 | 20 October | 14 °C | 17 °C | 0.4 mm |
| 2018 | 14 October | 16 °C | 18 °C | 0.0 mm |
| 2017 | 15 October | 22 °C | 28 °C | 0.0 mm |
| 2016 | 2 October | 17 °C | 20 °C | 0.0 mm |
| 2015 | 18 October | 18 °C | 19 °C | 3.7 mm |
| 2014 | 5 October | 18 °C | 20 °C | 0.0 mm |
| 2013 | 6 October | 18 °C | 23 °C | 0.0 mm |
| 2012 | 30 September | 19 °C | 22 °C | 0.0 mm |
| 2011 | 25 September | 20 °C | 23 °C | 0.0 mm |
| 2010 | 26 September | 18 °C | 22 °C | 0.0 mm |
| 2009 | 4 October | 20 °C | 24 °C | 0.0 mm |
| 2008 | 28 September | 19 °C | 23 °C | 0.0 mm |
| 2007 | 16 September | 21 °C | 24 °C | 0.2 mm |
| 2006 | 24 September | 20 °C | 21 °C | 0.0 mm |
| 2005 | 25 September | 19 °C | 22 °C | 0.0 mm |
| 2004 | 26 September | 20 °C | 26 °C | 0.0 mm |
| 2003 | 28 September | 20 °C | 23 °C | 0.0 mm |
| 2002 | 29 September | 20 °C | 23 °C | 0.0 mm |
| 2001 | 30 September | 18 °C | 22 °C | 0.0 mm |
| 2000 | 22 October | 14 °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, pt); cancelled editions (e.g. 2020–21) are not counted.
Dates and sources
Coordinates: 38.708, -9.139; ERA5 cell centred at 38.75, -9.25 (average ground height of the cell 67 m).