2026 Belgian Grand Prix: Spa forecast points to wet weekend

Rain threatens every day of track action

Formula 1 drivers could face their first competitive wet-weather running of the 2026 season at this weekend’s Belgian Grand Prix, with current forecasts pointing to rain across all three days at Spa-Francorchamps.

No fully wet competitive session has yet taken place during a grand prix weekend this season. That would make Spa an important first examination of how the 2026 cars perform when rain, rather than simply a threat on the radar, becomes a defining factor in practice, qualifying or the race.

Drivers face first true wet-weather test

However, those outings have not provided the same competitive challenge as a grand prix session. The Canadian Grand Prix began with some sprinkles, but most of the field still chose slick tyres for the start. Spa could therefore deliver the first genuine test of wet-weather race preparation for the field in 2026.

The weather forecast also adds another variable to a circuit already defined in the source material by its long straight-line sections. The latest Spa track map outlines the circuit’s 2026 Straight Mode and Overtake Mode zones, providing useful context for how teams will assess the weekend’s conditions.

Mild temperatures and shifting wind

Temperatures are expected to remain in the mid-20s throughout the weekend. Winds are forecast to come roughly from the north-west, creating a tailwind down the Kemmel Straight, which runs directly south, and a headwind into the Bus-Stop chicane at the end of the lap.

That combination could further complicate the drivers’ and teams’ assessment of the track, particularly if rain affects grip levels across the circuit. With showers currently forecast on every day of running, Spa’s weather may become the defining variable of the Belgian Grand Prix before the cars even reach the starting grid.