How often does weather delay flights at Marseille-Provence?
From January 2018 to September 2026, EUROCONTROL recorded arrival restrictions for weather (regulation reason W) at Marseille-Provence (MRS) on 41 of 3,195 days (1.3%). The worst month is December: 2% of days and 0.0 minutes of weather delay per arriving flight on average. Calmest: June–July (0% of days). Weather caused 3% of all arrival-regulation delay minutes at this airport. Source: EUROCONTROL.
Month by month
| Month | Days with weather restrictions | Days with ≥ 1 min per arrival | Minutes per arriving flight |
|---|---|---|---|
| January | 2% | 1% | 0.05 |
| February | 2% | 0% | 0.02 |
| March | 1% | 0% | 0.00 |
| April | 1% | 0% | 0.01 |
| May | 1% | 0% | 0.00 |
| June | 0% | 0% | 0.00 |
| July | 0% | 0% | 0.00 |
| August | 1% | 1% | 0.03 |
| September | 2% | 1% | 0.07 |
| October | 2% | 0% | 0.02 |
| November | 2% | 0% | 0.01 |
| December | 2% | 1% | 0.04 |
Share of days on which EUROCONTROL's network manager limited arrivals because of weather at or around the airport (regulation reason W), 2018–2026. Minutes per arriving flight = weather-regulation delay ÷ all arrivals that month. Worst weeks of the year: week 47 (5%), week 40 (5%), week 42 (4%).
Year by year
| Year | Days with weather restrictions | Minutes per arriving flight | Arrivals |
|---|---|---|---|
| 2018 | 6 of 365 | 0.02 | 48,861 |
| 2019 | 4 of 365 | 0.01 | 50,974 |
| 2020 | 1 of 366 | 0.01 | 23,741 |
| 2021 | 4 of 365 | 0.01 | 29,946 |
| 2022 | 4 of 365 | 0.00 | 45,816 |
| 2023 | 3 of 365 | 0.01 | 50,279 |
| 2024 | 10 of 366 | 0.05 | 50,365 |
| 2025 | 7 of 365 | 0.04 | 49,716 |
| 2026 (Jan–Sep) | 2 of 273 | 0.02 | 37,927 |
2020–2021: far fewer flights during the pandemic.
Weather among all causes
| Cause of arrival regulation | Share of delay minutes |
|---|---|
| Industrial action (atc) | 28% |
| Atc equipment | 22% |
| Airspace management | 11% |
| Aerodrome capacity | 10% |
| Special event | 9% |
| Atc staffing | 6% |
| Other | 5% |
| Air traffic control capacity | 4% |
| Weather | 3% |
Causes with at least 2% of all arrival-regulation delay minutes, 2018–2026.
What the weather was like on those days
| In the airport's weather reports (METAR, 05–21 UTC) | Days with weather restrictions | Other days | Ratio |
|---|---|---|---|
| Thunderstorm reported | 20% | 4.1% | 4.8× |
| Fog or visibility under 800 m | 41% | 1.0% | — |
| Cloud base at or below 200 ft | 7.3% | 0.1% | — |
| Gusts of 30 knots or more | 12% | 13% | 0.9× |
| Crosswind of 20 knots or more on the best runway | 0.0% | 1.2% | — |
| Snow | 2.4% | 0.1% | — |
| Freezing rain or drizzle | 0.0% | 0.0% | — |
On 34% of the restriction days none of these showed up in the airport's own reports: restrictions are also set on forecasts, for weather on the approach or elsewhere in the area, and when the wind direction forces a less efficient runway layout. The weather is what came with the delays, not proof of their cause. Based on 3,195 days with full METAR coverage.
The heaviest days
| Date and reported weather | Weather delay, minutes | Arrivals | Minutes per arrival |
|---|---|---|---|
| 21 September 2025 Thunderstorm reported | 1,108 | 122 | 9.1 |
| 30 September 2026 Thunderstorm reported | 767 | 146 | 5.3 |
| 31 January 2024 Fog or visibility under 800 m | 670 | 109 | 6.1 |
| 1 December 2023 none of these in the airport's METAR | 585 | 132 | 4.4 |
| 15 August 2024 Thunderstorm reported | 544 | 148 | 3.7 |
What these numbers cover
- Only delays from air traffic flow management (ATFM) regulations on arrivals are counted — not all delays, not departures, and not cancellations or diversions. A day with restrictions does not mean every flight was late.
- Airport ICAO code LFML, IATA MRS. Ranking by share of restriction days: 65 of 94 airports on this site.