It's going to be a hot day in the Paris region this Wednesday, June 25, 2025. The thermometer could climb to 35°C, or even 36°C, in some towns in the region. A yellow heatwave alert has been activated in Paris and its inner suburbs, as well as in Essonne and Seine-et-Marne.
And the weather is set to turn stormy towards the end of the day in the Ile-de-France region. " In a very hot and unstable context, a stormy deterioration is setting in from the southwest. It is between late afternoon and mid-night that the most virulent developments are expected " says Météo France, which has therefore placed Paris and the whole of the Île-de-France region under a "vigilance orange" forthunderstorms this Wednesday. According to the weather service, " these storms are then likely to be accompanied by sustained rain, significant electrical activity, hail, as well as gusts that could be locally violent ".
Thunderstorms in Paris and Île-de-France: yellow alert on Monday, October 20
Météo France has issued a yellow alert for thunderstorms across the entire Île-de-France region on Monday, October 20, 2025. The eight departments of the Île-de-France region are among the 30 areas affected by this weather alert. Here is an overview of what to expect. [Read more]
The expected hot weather and the risk of violent thunderstorms are not without consequences for public transport users in the Paris region. Transilien SNCF is announcing disruptions and interruptions to traffic on lines L and J. On certain routes of these two Transilien lines, a total halt to traffic is planned from 8:00 p.m., in order to " guarantee the safety of passengers and staff ".
In detail, on line J, a total interruption of traffic is scheduled for June 25 between Mantes-la-Jolie and Vernon, from 8pm, then between Pontoise and Gisors, from 10pm. " No road substitutions will be made ", it adds.
On Transilien line J, train traffic will be completely interrupted between Saint-Cloud and Saint-Nom-la-Bretèche this June 25 from 10:00 pm. Here too, there will be no road substitutions.
Transilien SNCF is therefore advising users to postpone their journeys"as far as possible". The storms could also cause disruptions on other network lines in the evening. It is therefore advisable to check train timetables before going to the station. Remember to hydrate before arriving at the station, and take water with you on your journey.
Official website
www.transilien.com
Thunderstorms in Paris and Île-de-France: yellow alert on Monday, October 20
