Summer return: weather forecast for September surprised!

Summer return: weather forecast for September surprised!

September brings hope for a golden summer return! From the weekend, more precisely on September 6th and 7th, 2025, we can look forward to warm weather. A high pressure area over Europe is causing temperatures to break the 25 degree mark in many places, giving us a few wonderful days. Whether it's swimming trips, barbecue evenings or simply relaxing hours outdoors - the possibilities to enjoy late summer seem endless. However, caution is advised: in the afternoon hours we can also expect minor disruptions with showers or even thunderstorms. Therefore, excursionists should not only have sunscreen, but also an umbrella, notes the Gießener Anzeiger.

September has a reputation for often bringing summer back. Indian summer, a real term from the German weather vocabulary, is particularly popular during this time. What is behind this phenomenon? As the weather service reports, Indian summer means mild temperatures paired with lots of sunshine, often after the first signs of autumn, usually in September or early October. Mild weather of up to 30 degrees could await us around the first weekend in September.

The phenomenon of Indian summer

Indian summer takes its name from the Old German “weiben,” which means “to tie spider threads.” When the days are warm again, spiderlings take the opportunity to spread themselves through the air with their fine threads. These cobwebs are particularly visible when the sun is low, which further reinforces the romantic image of warm late summer days. From a meteorological point of view, Indian summer is actually a phase of stable high pressure that typically begins in late September when the nights become cooler. Nevertheless, we can look forward to a high-pressure interlude at the beginning of September, which will not only bring summer back, but also give us the opportunity to enjoy days suitable for terraces.

Even if the long-term weather forecast contains uncertainties, September 2025 can be expected to have many beautiful late summer days. A real Indian summer could possibly still be in store for us here, but probably not until later in the month, as meteorologist Johannes Habermehl explains. Small changes in the air flow can also influence the weather, so we should be prepared for anything in the coming days.

In summary, we can look forward to summery temperatures in the next few days, even if Indian summer actually brings with it more stable conditions towards the end of the month. Anyone who has the opportunity should enjoy these warm late summer days, because they could soon be a memory again.

For more information about the Indian summer weather phenomenon and the current weather forecasts, you can read the articles on Gießener Anzeiger, The weather and Utopia read up.