F1 | Rain threat over Interlagos: the weather forecast for a crucial Sao Paulo GP weekend. Formula 1 heads to Interlagos for the 2025 Brazilian Grand Prix.

Formula 1 is gearing up for the 2025 Brazilian Grand Prix, set to take place at the iconic Interlagos circuit, and the weather could once again become a major talking point. As the 21st round of the season, the race in São Paulo might prove crucial in shaping the outcome of the world championship, and forecasts indicate that rain could play a significant role across the weekend.

The weather forecast for the Brazilian Grand Prix weekend

Friday

The 21st race weekend of the season will feature the Sprint format, giving teams only one hour of free practice before the competitive sessions begin. However, the weather is expected to be far from ideal on Friday, with rainfall predicted throughout the day. Despite the wet conditions, temperatures should remain high, hovering around 28°C when the cars hit the track for the first day of action. Wet-weather performance could therefore become crucial as teams prepare setups with limited running time.

Saturday

The situation is expected to remain largely similar on Saturday. Temperatures are forecast to stay steady at around 24°C during the second day of on-track activities. Both the Sprint race and the qualifying session could be affected by rain, while strong winds are also expected, potentially creating additional challenges for drivers and engineers. Teams may have to adjust their aerodynamic balance and tire strategies to handle the changing grip levels across the day.

Sunday

On Sunday, when the cars line up for the main race, the temperature should drop to around 19°C. While no rain is expected during the Brazilian Grand Prix itself, the skies will remain mostly cloudy throughout the afternoon. The cooler conditions could have a noticeable effect on tire management and race pace, particularly for teams that have struggled to bring their tires into the right temperature window in previous wet-to-dry conditions. Although the risk of rain seems to fade for race day, the unpredictable São Paulo weather always keeps teams and drivers on alert.

With potential showers on Friday and Saturday followed by an overcast race on Sunday, the Brazilian Grand Prix promises to deliver an exciting and unpredictable weekend — one that could play a decisive role in the outcome of the 2025 Formula 1 World Championship.