FIA declares heat hazard for Singapore’s Sprint and race
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The FIA has declared a heat hazard for Singapore’s Sprint and race after the Official Weather Service forecast a heat index above 31.0°C at some point during either event. Mercedes says drivers lose an average of 3kg in the heat and prepare by taking exercise bikes into saunas to simulate Singapore’s conditions or working out in multiple layers of clothing, GPBeat reports.
On 8 October, the FIA declared a Heat Hazard for both the Singapore Sprint and race after the Official Weather Service forecast a heat index above 31.0°C at some point during either event. The 2026 Singapore weekend runs from 9 to 11 October.
Singapore’s heat is also a physical challenge for drivers. In a feature published on 5 October, Mercedes says drivers lose an average of 3kg of body weight in the heat. Formula 1’s circuit guide says drivers can lose as much as 3kg over a race.
According to Mercedes, drivers prepare for Singapore’s conditions by taking exercise bikes into saunas to simulate the heat or working out in multiple layers of clothing.
Sources 03
- PRIMARY SOURCEFive Things You Didn't Know About the 2026 Singapore GPMercedes F1 · Team statement; interested source
- PRIMARY SOURCEEverything you need to know about the Marina Bay Street CircuitFormula 1
- PRIMARY SOURCEDoc 4 - Heat Hazard DeclarationFIA F1 decision documents
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