Nice, French Riviera
The 2026 Ironman 70.3 World Championship brings middle-distance racing back to Nice, with Mediterranean water, a hilly Alpes-Maritimes bike and a fast Promenade des Anglais run.
Typical race window
Monthly climate normal from 2016-2025 archive data.
18°C-25°C
15 km/h
33 km/h
17%
A typical day in September averages 1.7 mm of precipitation, with average gusts around 34 km/h. Treat this as planning context, not a live forecast.
Jan
13°C
Feb
14°C
Mar
15°C
Apr
18°C
May
21°C
Jun
26°C
Jul
28°C
Aug
29°C
Sep
25°C
Oct
21°C
Nov
16°C
Dec
14°C
The official course profile lists an ocean swim, so sea temperature, chop and Côte d'Azur beach guidance are the key pre-race checks.
The hilly bike through the Alpes-Maritimes hinterland makes wind, descending confidence and temperature changes more important than a flat coastal forecast alone.
The flat Promenade des Anglais run should be fast, but September sun, heat reflection and humidity can still turn pacing and cooling into decisive factors.
Live race-day forecast
This race page stays evergreen. For date, start time and expected segment durations, open the race-day planner with Nice, French Riviera prefilled.