Rock en Seine: what was the weather like at past editions?
At 11 of 18 editions of Rock en Seine with known dates from 2004 to 2024 (61%), at least one festival day had rain (≥ 1 mm); a day of 30 °C or more came at 3 of 18 editions. Source: ERA5 reanalysis (Copernicus), data to 2024.
11 / 18editions with at least one rainy day
24%of festival days rainy
2 / 18editions with mud (≥ 40 mm incl. the week before)
3 / 18editions with a day ≥ 30 °C
7 °C (2018)coldest night
2 mmmedian rain per edition
Climate, not a forecast: these are statistics of past weather, not a forecast for the next edition.
Climate of the usual dates
If the next edition falls on its usual dates (25–27 August), the weather on those calendar days in 1991–2025 gives these odds:
- 57% — chance of at least one rainy day
- 28% — share of rainy days
- 24 °C — average daily maximum
- 17% — chance of a day of 30 °C or more
- 6% — chance of a night below 8 °C
Average daily maximum on these dates: 23.5 °C in 1991–2005, 24.9 °C in 2011–2025.
Weather at past editions
| Year | Dates | Rainy days | Rain | Max | Night min | Note |
|---|---|---|---|---|---|---|
| 2024 | 23–25 August | 1 / 3 | 2 mm | 29 °C | 11 °C | last 3 days of 21–25 August |
| 2023 | 25–27 August | 2 / 3 | 7 mm | 22 °C | 12 °C | last 3 days of 23–27 August |
| 2022 | 26–28 August | 0 / 3 | 0 mm | 26 °C | 13 °C | last 3 days of 25–28 August |
| 2019 | 23–25 August | 0 / 3 | 0 mm | 32 °C | 12 °C | — |
| 2018 | 24–26 August | 1 / 3 | 2 mm | 23 °C | 7 °C | — |
| 2017 | 25–27 August | 1 / 3 | 34 mm | 28 °C | 16 °C | — |
| 2016 | 26–28 August | 0 / 3 | 1 mm | 34 °C | 18 °C | — |
| 2015 | 28–30 August | 0 / 3 | 0 mm | 32 °C | 14 °C | — |
| 2014 | 22–24 August | 0 / 3 | 0 mm | 20 °C | 8 °C | — |
| 2013 | 23–25 August | 1 / 3 | 18 mm | 30 °C | 12 °C | — |
| 2012 | 24–26 August | 1 / 3 | 2 mm | 24 °C | 15 °C | — |
| 2011 | 26–28 August | 1 / 3 | 13 mm | 20 °C | 12 °C | — |
| 2010 | 27–29 August | 1 / 3 | 7 mm | 24 °C | 11 °C | — |
| 2009 | 28–30 August | 0 / 3 | 0 mm | 24 °C | 9 °C | — |
| 2007 | 24–26 August | 0 / 3 | 0 mm | 25 °C | 14 °C | — |
| 2006 | 25–26 August | 1 / 2 | 2 mm | 22 °C | 11 °C | — |
| 2005 | 25–26 August | 1 / 2 | 17 mm | 21 °C | 10 °C | — |
| 2004 | 27–28 August | 1 / 2 | 9 mm | 22 °C | 12 °C | — |
How to read these numbers
- ERA5 is a reanalysis on a 0.25° grid (about 25 km): it counts slightly more light-rain days than nearby weather stations (by about 5–7 percentage points) and gives daytime highs about 1–2.5 °C below station readings, so real hot days were hotter than shown here.
- Edition window: the official programme days (main festival days, without camping or warm-up days before the start).
- For 3 editions the source lists a longer span (camping or warm-up days, a second weekend); we used the last 3 days, the festival's usual length.
- “Mud” means at least 40 mm of rain over the festival days and the week before.
- No dates found for 2008: these editions are not counted.
- Dates of past editions: Wikidata and Wikipedia (de, en, fr, it, nl); cancelled editions (e.g. 2020–21) are not counted.
Dates and sources
Coordinates: 48.837, 2.215; ERA5 cell centred at 48.75, 2.25 (average ground height of the cell 104 m).