--- title: "Anticyclone covers Ukraine: September 16 — warm and rain-free, then a sharp cooling from the 21st" description: "On September 16, an anticyclone will establish itself over Ukraine: according to the Ukrainian Hydrometeorological Center, warm dry weather is expected — 6–12 degrees at night and 20–25 degrees during the day. Forecasters predict a sharp cooling with rain from September 21." date: 2026-09-16T04:02:00.000Z lang: en url: https://xab.info/en/posts/anticyclone-over-ukraine-sept-16-warm-no-rain-then-sharp-cooling tags: [ukraine-weather, anticyclone, forecast, ukrgidrometcenter, indian-summer] publisher: "XAB.info" --- # Anticyclone covers Ukraine: September 16 — warm and rain-free, then a sharp cooling from the 21st ![Pedestrians cross the street on a sunny autumn day in Kyiv — warm rain-free anticyclone weather before the cooling](https://xab.info/media/2026/09/16/anticiklon-nad-ukrainoy-16-sentyabrya-teplo-bez-dozh/anticiklon-nad-ukrainoy-16-sentyabrya-teplo-bez-dozh-1.webp) ## 🎯 Key Points - On September 16, an anticyclone with its center shifting from Romania toward the central regions of the country holds over Ukraine. - 6–12 degrees at night, 20–25 during the day; the east is warmer at night (10–15) and cooler during the day (17–22). - From September 16 to 20, Indian summer is expected (21–26 during the day, 9–14 at night, according to V. Postrihan). - From September 21, forecasters promise a sharp cooling to 10–17 degrees and rain (N. Didenko). On September 16, an anticyclone takes hold over Ukraine, gifting the country several days of warm, dry weather with no precipitation. This is reported by RBC-Ukraine, citing data from the Ukrainian Hydrometeorological Center. According to the forecast, the center of the anticyclone will gradually shift across the territory of Romania toward the central regions of Ukraine, maintaining a stable anticyclonic circulation and clear, sunny weather over the regions. ### Anticyclone and northwesterly wind During the day, a northwesterly wind prevails. Cool air persists at higher altitudes, which determines the temperature contrast characteristic of this period: nights will be noticeably cooler than usual, while daytime hours, thanks to solar radiation, will become markedly warmer. It is precisely this combination — a cold upper layer and solar warming near the surface — that creates comfortable, yet variable, weather. ### Temperature background by region At night, the air cools to 6–12 degrees Celsius in most regions, while during the day the thermometer readings will rise to 20–25 degrees. In the eastern regions the picture is somewhat different: due to the cloudy sky, the night there will be warmer — 10–15 degrees — but the daytime will be cooler than in the rest of the country, at just 17–22 degrees. Thus, the geographic spread of temperatures within the country on this day will amount to several degrees. ### Indian summer until the end of the week Forecaster Vitaliy Postrihan previously noted that from September 16 to 20, Ukraine would still be covered by so-called Indian summer. According to his forecast, during these days the air would warm up to 21–26 degrees Celsius during the day and drop to 9–14 degrees at night. This means that the dry, warm spell will last almost until the very end of the working week, providing an opportunity for walks and outdoor activities without an umbrella. ### Contradictory data There are differences in the forecasters' predictions that are important to take into account. On the one hand, Vitaliy Postrihan paints a picture of a stable Indian summer from September 16 to 20, with daytime temperatures of 21–26 degrees. On the other hand, forecaster Natalya Didenko warned of a sharp cooling: according to her, already from Monday, September 21, the weather will change dramatically, with daytime temperatures of only 10–17 degrees, and atmospheric fronts will bring moderate and heavy rain. In addition, there are minor discrepancies in the figures: the Ukrainian Hydrometeorological Center, via RBC-Ukraine, cites daytime temperatures of 20–25 degrees, while Postrihan gives 21–26. Both versions agree on the main point: the warm, dry phase will give way to a cold, rainy front at the start of the following week, although the exact boundaries and temperature values differ among specialists. ### What this means for residents The practical conclusion is simple: the coming few days are a window of favorable dry weather that should be used for trips, dacha work, and outdoor activities. At the same time, by September 21 one should be prepared for a noticeable cooling and rain: an umbrella and warmer clothing will once again become relevant. It is recommended to follow forecast updates on the official resources of the Ukrainian Hydrometeorological Center. ## 🔍 Fact-Check Verification - [Anticyclone changes the weather in Ukraine: what to expect on September 16](https://www.rbc.ua/ukr/news/antitsiklon-zminyue-pogodu-ukrayini-chogo-1789477224.html) - Основной источник: антициклон, смещение центра из Румынии, северо-западный ветер, ночные 6–12 и дневные 20–25, восток 10–15/17–22, упоминание предупреждений Диденко и прогноза Постриганя. - [Forecasters sound the alarm over the arrival of dangerous weather: where in Ukraine the storm will break out and ...](https://tsn.ua/ru/ukrayina/sinoptiki-zabili-trevogu-iz-za-nastupleniya-opasnoy-stihii-gde-v-ukraine-razrazitsya-nepogoda-i-kogda-karta-3169151.html) - Подтверждено по источнику tsn.ua - [After the heat — fresh air: the Ukrainian Hydrometeorological Center talks about the weather this week](https://www.unian.net/pogoda/news/pogoda-v-ukraine-prognoz-ukrgidrometcentra-na-nedelyu-13479591.html) - Дополнительный контекст о влиянии антициклона на погодный режим Украины. - [Forecaster explains how the anticyclone will change the weather in Ukraine](https://www.unian.net/pogoda/news/pogoda-sinoptik-soobshchil-kak-anticiklon-izmenit-pogodu-v-ukraine-13306338.html) - Дополнительный контекст о влиянии антициклона на погодный режим Украины. ## ❓ FAQ ### Q: What weather is expected in Ukraine on September 16? **A:** Warm and dry, with no rain: 6–12 degrees Celsius at night and 20–25 during the day. In the eastern regions it is warmer at night (10–15) and cooler during the day (17–22). ### Q: When will it get colder in Ukraine? **A:** According to the warning from forecaster Natalya Didenko, a sharp cooling with moderate and heavy rain is expected from Monday, September 21: only 10–17 degrees during the day. ### Q: What is Indian summer in this forecast? **A:** Forecaster Vitaliy Postrihan predicts Indian summer from September 16 to 20: 21–26 degrees Celsius during the day and 9–14 at night.