Chaotic Miami Grand Prix expected: here’s what the weather forecast reveals

The expected rain is also likely to be accompanied by thunderstorms, potentially throwing a curveball into what is already shaping up to be a challenging, weather-affected race for teams in Miami. However, while Sunday is expected to be wet, conditions across the rest of the weekend are forecast to remain relatively dry.

Friday, which marks the first on-track action of the Florida event – featuring the sole free practice session and Sprint Qualifying – is expected to see largely partly cloudy skies. Temperatures are set to reach a high of 30°C, with winds ranging between 15–30 km/h and no significant chance of rain.

Saturday, which hosts the Sprint race followed by Grand Prix qualifying, is also forecast to be partly cloudy. Temperatures are expected to peak at 32°C, with stronger winds of 25–40 km/h. Conditions are likely to cool during qualifying, with temperatures dropping to around 24°C.

Sunday, however, presents the most unpredictable and challenging weather conditions. Alongside the high probability of rain and thunderstorms, temperatures are expected to reach a high of 27°C, with winds between 15–25 km/h. Localised heavy rainfall remains a strong possibility.

Under the regulations, the race director can declare a “Rain Hazard” up to two hours before the race if the probability of rain exceeds 40%, signalling potentially low-grip conditions. In addition, Florida enforces particularly strict protocols regarding lightning and thunderstorms, which could pose even greater disruption risks than a standard wet race.

It is this factor that has teams and drivers on high alert. Unlike in many other countries, U.S. regulations require major outdoor events – including Formula 1 Grands Prix – to be suspended if thunderstorms approach and there is a risk of lightning. In such cases, the medical helicopter would be unable to operate, and spectator safety would also be compromised, requiring evacuation from the venue.

As a result, if thunderstorms hit the circuit, even without severe flooding, the race could be red-flagged, forcing drivers back into the pit lane.

With extreme weather forecast for Sunday, Formula 1 drivers have shared their views on the prospect of racing under such conditions.

Both Carlos Sainz and Kimi Antonelli expressed enthusiasm about racing in the rain when asked about wet-weather running at the Miami circuit. However, they also highlighted the significant safety risks involved, while suggesting that improvements could be made to enhance wet-weather racing.

The pair pointed to the risk of aquaplaning on a circuit prone to standing water, as well as the ongoing visibility issues that continue to challenge drivers in heavy rain.

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