On September 15, 2026, Ukraine will see variable cloud cover, and against the backdrop of an eastern cyclone passing through, rain and even thunderstorms are expected in several regions. This is reported by RBC-Ukraine, citing data from the Ukrainian Hydrometeorological Center. According to the forecast, the highest amount of precipitation will fall in the eastern part of the country, while most of the territory will see the day pass without significant precipitation, except for light rain in the west.
Where rain and thunderstorms are expected on September 15
Meteorologists forecast moderate, locally heavy rain in the eastern regions, as well as in most of the southern and central regions and in the Sumy area. These are the territories that will be most affected by the eastern cyclone. No precipitation is expected in the rest of Ukraine: the exception is the western regions, where light rain will fall in places during the day. Thus, the contrast between the eastern and western parts of the country will be noticeable on this day.
Forecast for the Kyiv region
In the Kyiv region on September 15, variable cloud cover will persist, but without precipitation. The wind is expected to be northwesterly, at 7–12 meters per second. During the day, the air across the region will warm up to 17–22 degrees. For Kyiv and the surrounding areas, this means a relatively calm, rain-free day with a moderate wind.
Causes of the bad weather: the eastern cyclone
According to meteorologist Nataliya Dydenko, the rain on September 15 is linked to the activity of an eastern cyclone, which will most strongly affect the Sumy, Poltava, and Dnipropetrovsk regions. On the same days, fresh air will also reach Zaporizhzhia. The wind across the country will be predominantly northwesterly, at 7–12 m/s, which corresponds to a moderate rather than a stormy regime.
Contradictory data
There are discrepancies in meteorologists' assessments for the coming days that are important to take into account. On the one hand, Nataliya Dydenko warned that from next week, starting September 21, the weather could become noticeably colder and rainier. On the other hand, the head of the Cherkasy Regional Hydrometeorological Center, Vitaliy Postrihan, stated that from September 16 to 20, Ukraine could see "Indian summer" (a warm, dry spell in autumn): the cyclone will leave the country's territory, and an anticyclone from the southwest will bring dry, warm, and sunny weather with daytime temperatures up to 26 degrees. These forecasts refer to different time windows and do not exclude each other, but they paint a contradictory picture of "tomorrow's" weather. In addition, a number of outlets in their headlines spoke of a "stormy wind" on September 15, whereas the actual forecast figures (7–12 m/s) indicate a moderate wind with no stormy character — here too there is a mismatch between the sensational wording and the numbers.
Conclusion: a contrasting day and a weather shift next week
In conclusion, September 15 in Ukraine will be contrasting: the east and south will receive rain and thunderstorms, the center will be mostly without precipitation, and the west will see light daytime rain. The Kyiv region will remain in the dry zone at 17–22 degrees. The further development depends on how quickly the cyclone gives way to the anticyclone: according to some estimates, this will bring an "Indian summer" up to 26 degrees, while according to others, from September 21 the weather will become colder and rainier.
