After a short midweek lull, the heat is once again on the rise in Île-de-France. A new heat wave takes hold starting this Sunday, July 5, 2026 across Paris and the entire Île-de-France region, from Yvelines (78) to Seine-et-Marne (77). According to Météo-France, the thermometer will keep rising day after day, powered by a new heat dome forming over western Europe.
The weekend serves as a warm-up. Saturday, July 4, temperatures are already forecast to peak around 32 to 33°C in Paris, under bright sunshine and a dry feel. But it’s not until Sunday that the heat truly intensifies, with increasingly heavy air and nights that struggle to cool down.
The week of July 6 is shaping up to be the hottest of the season. Meteo-France foresees peak temperatures of 34 to 35°C in Île-de-France between Tuesday, July 7 and Thursday, July 10, with readings roughly between 33 and 35°C for Paris and the inner suburbs. Nationwide, the agency expects highs of up to 35 to 36°C for the period July 7–10.
That's the question. Météo-France now regards a spell of extreme heat for the week of July 6–13 as more likely, but remains cautious about its actual severity. The canicule threshold is only applied when high temperatures, day and night, persist for at least three consecutive days.
In Île-de-France, in the north of the country, heat is expected to be less severe than in the south, where forecasters locally warn of 38 to 40°C. In response to these projections, the government convened an interministerial crisis cell as early as June 29 to anticipate the upcoming heat waves. To follow developments most closely, the smart move is to check the daily vigilance map from Météo-France, updated every day.
The reflexes remain the same: stay well hydrated, limit exertion to the coolest hours (between 12 p.m. and 4 p.m.), and favor shaded or air-conditioned spaces. To catch your breath, you can opt for air-conditioned stores during the sales or for supervised swimming sites in the Seine and Marne, which are partly reopening this weekend.
We'll keep you updated day by day on how the weather is shaping up in Île-de-France. You can also (re)read our full update on the possibility of a heatwave returning in July in Île-de-France, as well as our ideas for outings to cool off when it's too hot in the region.
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Dates and Opening Time
From July 4, 2026 to July 12, 2026
