Festival and marathon weather in Switzerland

8 festivals and races in Switzerland with at least 10 dated editions since 1991, with the weather of every past edition from ERA5 (1991–2025).

Data updated: 2 November 2026 · Sources, licences and data

Calculated 3 November 2026 · weather: ERA5 1991–2025 · edition dates checked 2 November 2026

Music festivals

Event	Country	Usual dates	Rain on ≥ 1 day	Day ≥ 30 °C	Editions
Greenfield FestivalSwitzerland	Switzerland	12–14 June	95%	5%	19
GurtenfestivalSwitzerland	Switzerland	16–18 July	76%	32%	25

Event	Country	Usual dates	Share of rainy days	Day ≥ 30 °C	Editions
Basel Carnival (Basler Fasnacht)Switzerland	Switzerland	27 February – 1 March	48%	0%	33
Street Parade (Zürich)Switzerland	Switzerland	11 August	39%	14%	28

Event	Country	Usual dates	Avg at 9:00	Rain in race hours	Editions
Geneva MarathonSwitzerland	Switzerland	7 May	13 °C	44%	18
GreifenseelaufSwitzerland	Switzerland	19 September	14 °C	26%	34
Lausanne MarathonSwitzerland	Switzerland	25 October	10 °C	27%	30
Swiss City MarathonSwitzerland	Switzerland	28 October	11 °C	28%	18

Climate, not a forecast: these are statistics of past weather, not a forecast for the next edition.