FIA activates Rain Hazard protocol for Canadian GP as rain threat looms over Montreal. FIA prepares for wet Canadian GP with Rain Hazard protocol as Montreal forecast remains uncertain.

Just as in Miami, the threat of rain has prompted the FIA to officially activate the “Rain Hazard” regulatory protocol ahead of qualifying in Montreal.

Perhaps it is almost a way of tempting fate in the hope of avoiding a wet race, but three weeks after the same situation unfolded in Miami following the Sprint Race, race control has once again formalised the possibility of wet-weather conditions for the Canadian Grand Prix.

In Florida, the rain ultimately never arrived, helped in part by the decision to bring the race start forward. Now, with weather uncertainty once again hanging over a Grand Prix weekend, the FIA has given teams the option to make certain setup changes to their cars after parc fermé conditions come into force following qualifying, without risking penalties for breaching the usual regulations.

Rain Hazard: what changes compared to a normal Grand Prix?

Although this is already becoming a relatively frequent occurrence — this is the second Grand Prix in quick succession — it is still worth explaining, as this remains a relatively new rule introduced for the 2026 Formula 1 season.

When declared at the discretion of the race director, provided there is at least a 40% chance of a wet race according to forecasts from the official Meteo France weather service, the Rain Hazard protocol allows teams a limited exemption from parc fermé restrictions.

However, this is far from a complete free-for-all. While the exact list of permitted changes is contained in confidential documentation provided only to teams, it is understood that modifications such as ride height adjustments and changes to the front movable wing angle are allowed.

That front wing element can still be opened on the straights in wet conditions, unlike the rear movable wing, which must remain closed for safety reasons.

According to specialist outlet The Race, the decision to introduce parc fermé exemptions under the Rain Hazard protocol was primarily designed to avoid a wave of post-race disqualifications in cases where a wet race follows a dry qualifying session. Because movable aerodynamic elements remain partially restricted for safety reasons, cars are subjected to greater vertical loads on the straights, which could lead to abnormal floor wear and potentially trigger multiple disqualifications after the race.

For this reason, the FIA first introduced the possibility of allowing only the front movable wing to operate in wet conditions, before later adding the Rain Hazard protocol to permit limited setup adjustments, particularly ride height changes.

Montreal weather forecast remains uncertain

In any case, while several drivers have expressed concerns about racing in wet conditions with lighter cars, less aerodynamic downforce, and significantly more electrical power deployment on the straights and corner exits, the risk of rain now appears to be easing compared to earlier forecasts.

That said, weather predictions are constantly evolving by nature, and uncertainty remains. It is still unclear whether race control could once again consider bringing the start of the Canadian Grand Prix forward, as was successfully done in Miami, in order to reduce potential risks.

The race had originally been scheduled for 4:00 PM local time (10:00 PM CET), partly to avoid a scheduling clash with the Indianapolis 500, which is set to begin at 6:45 PM CET.