After an unusually warm start to November, temperatures across France and Monaco are set to tumble sharply this week, with meteorologists forecasting conditions up to 5°C below seasonal norms. The drop comes in the wake of a weekend of torrential rain that swept through the southeast, which endured localised flooding and transport disruptions.
In Monaco, the contrast will be particularly stark. After enjoying balmy highs of 20°C, residents can expect a shift beginning Tuesday, with daytime temperatures falling to around 13°C by Thursday. Overnight lows are expected to dip to just 6°C. Météo-France attributes the drop to a polar air mass descending from the north and funnelling through the Rhône Valley, producing a cold, dry north-westerly wind not unlike a mild mistral.
The coming chill follows a prolonged period of unseasonable warmth along the Riviera, with recent weeks consistently registering well above average.
The weather shift also arrives on the heels of significant rainfall over the weekend. Torrents hit the southeast of France, with four departments — Drôme, Isère, Ardèche and Alpes-Maritimes — placed on orange alert by Météo-France. In the Ardèche, a 74-year-old man was reported missing on Sunday morning after being swept away by a flooding river near Saint-Vincent-de-Barrès while trying to retrieve his vehicle. Despite an extensive search involving firefighters, gendarmes and helicopter support, he had not been found as of Monday morning.
In the Alpes-Maritimes, areas around Grasse and the middle country saw the heaviest downpours, though authorities said river responses remained moderate. In Nice, Mayor Christian Estrosi activated a crisis unit, with roads in the Haut Magnan district temporarily closed due to flooding and water level concerns along the Paillon River.
By Sunday evening, Météo-France had lifted most flood alerts as the storm system moved east and weakened. Still, saturated ground and falling temperatures raise concerns about potential frost and slippery road conditions later in the week, especially inland, where lows could dip below freezing.
As the Riviera swaps sunshine for scarves, officials urge residents to prepare for the season’s first real cold spell. The sudden shift is expected to persist through the weekend, with grey skies, cool air and the chance of light rainfall setting the tone for the final stretch of November.
Stay updated with Monaco Life: sign up for our free newsletter, catch our podcast on Spotify, and follow us across Facebook, Instagram, LinkedIn, and Tik Tok.












