September is coming – but forget autumn

Summer is not over yet – even though we are now entering September.
Next week there is a chance for summer temperatures.
– It can be up to 30 degrees, says Peter Kondrup, TV4 meteorologist.

The first week of September begins on Monday with wind and rain along the Norrland and Uppland coasts. But then things quickly turn around.

– As early as Tuesday, the weather begins to stabilize in southern Sweden, with temperatures from 20 to 24 degrees. In the central and northern parts of the country there may be continued showers, says Peter Kondrup, meteorologist TV4 Nyheterna.

Unusually warm for the time of year

During Wednesday, a high pressure east of Sweden strengthens and starts pumping in warm air.

– It can be 27-28 degrees in southern Sweden, and upwards of 20 degrees in Norrbotten. These are unusually high temperatures for the time of year, says Peter Kondrup.

– During Thursday, it can be roughly the same temperature, and the heat will spread even further north. It is not impossible that in the southwestern parts of the country it could be 30 degrees, says Peter Kondrup.

According to other weather models, such as the American GFS, the data indicates that it could be around 30 degrees already earlier this week.

Could be a heat wave

And the heat is expected to stay for several days. Should it be 25 degrees five days in a row in the same place, it is a heat wave.

– In that case, it will probably be the first time we get a heat wave in September, but we will have to come back to that next week, says Peter Kondrup.

Last year, the average temperature in September was in some places higher than the average temperature in both July and August. But then it was also an unusually cold July in many places.

As for the hottest summer day, it occurred in June both this year and last year.
In the summer of 2023, 31.1 degrees were measured on June 15 in Östmark. This year, 32 degrees were measured on June 28 in Uppsala.