--- title: "Sharp contrast of up to 15 degrees: how a cyclone will split Ukraine on September 13" description: "On September 13, a cyclone will split Ukraine: rain with thunderstorms and +13…+15° in the south and center, and heat up to +30° in the southeast. Forecasters warn of sharp pressure fluctuations." date: 2026-09-13T04:02:04.000Z lang: en url: https://xab.info/en/posts/ukraine-weather-september-13-rain-heat-contrast tags: [weather-ukraine, ukhydrocenter, forecast, thunderstorms, cyclone] publisher: "XAB.info" --- # Sharp contrast of up to 15 degrees: how a cyclone will split Ukraine on September 13 ![Woman under a colorful striped umbrella in rainy autumn weather in Ukraine during a cyclone](https://xab.info/media/2026/09/13/pogoda-ukraina-13-sentyabrya-kontrast-dozhdi-zhara/pogoda-ukraina-13-sentyabrya-kontrast-dozhdi-zhara-1.webp) ## 🎯 Key Points - On September 13, rain and thunderstorms are expected in the southern and central regions and in Kharkiv Oblast, while the southeast will see dry heat up to +30°. - At night +8…+16°, during the day +13…+15° in the rainy zones, and up to +25…+30° in the southeast — a contrast of up to 15 degrees. - Forecaster Natalya Didenko warned of pressure spikes and recommended caution for people with cardiovascular diseases. On September 13, the weather across Ukraine will be uneven: some regions will see brief showers and local thunderstorms, while the southeast of the country will retain warm and mostly dry conditions. This is reported by RBC-Ukraine, citing a forecast from the Ukrainian Hydrometeorological Center. According to the forecasters, brief precipitation is expected in the southern and central regions, as well as in Kharkiv Oblast, with thunderstorms accompanying the rain in places. It is precisely this combination of precipitation and warmth that forms the main story of the day: the country will be divided into two distinctly different weather blocks. ### An uneven front: what the cyclone brings The cause of the sharp fluctuations is a cyclone, which carries atmospheric fronts into Ukraine's territory. These fronts separate air masses with different temperature characteristics, so the temperature situation will vary significantly across regions. It is expected to be cooler in the west and north, and somewhat warmer in the central regions. At first, warm weather will persist in the south, and then the high temperatures will shift toward the southeast and east of Ukraine, confirming the dynamic, "flowing" nature of the fronts. ### The day's temperature map At night, temperatures across the country ranged from +8 to +16 degrees. During the day, it will be cool in the regions where rain falls — around +13 to +15 degrees. In the southeast, where no precipitation is expected, the air will warm up to +25 to +30 degrees. Thus, the temperature contrast between different parts of Ukraine will be quite noticeable: the difference between the "rainy" and "dry" zones reaches about 15 degrees, making the day one of the most contrasting of the current season. ### Contradictory data When cross-checking with aggregated sources, a discrepancy in dates emerges: some publications (for example, articles referring to a forecast of "rain, thunderstorms and heat up to +30°C") actually refer to an earlier day — August 30, not September 13. These figures should not be mixed with today's forecast. In addition, there is a nuance in the description of the southern regions: some wordings emphasize rain in the south, while others highlight the persistence of warmth exactly there until it shifts to the southeast. Both versions are consistent if one takes into account that the front is moving: precipitation and heat in the southern part of the country may alternate by zone over the course of a day. ### Forecasters' health warning "The weather is expected to be changeable in the coming period; atmospheric pressure will fluctuate, and air temperature will vary from +30 to +15°, so people with cardiovascular ailments should be more careful and attentive to their health," warned forecaster Natalya Didenko. Sharp daily and interregional fluctuations, as well as pressure spikes, are named by forecasters as the main risk for weather-sensitive citizens in the coming days. ### Context: climate trends Today's contrasting day fits into a broader context that RBC-Ukraine has previously written about: due to global climate change, the weather in Ukraine is becoming more volatile, and record heat has already covered almost the entire planet this year. Thus, the combination of thunderstorm fronts and local heat anomalies up to +30 degrees is no coincidence, but a manifestation of a sustained trend toward intensifying extreme weather events. ## 🔍 Fact-Check Verification - [Rain, thunderstorms and a sharp cooling: what the weather will be like on September 13](https://www.rbc.ua/ukr/news/doshchi-grozi-ta-rizke-poholodannya-koyu-1789217581.html) - Первичный источник прогноза на 13.09: осадки в южных/центральных областях и Харьковской, грозы, температурный контраст +13…+15 и +25…+30, цитата синоптика Диденко. - [Weather in Ukraine is preparing a surprise: where heat up to +30 is expected and where thunderstorms will pass](https://tsn.ua/ru/ukrayina/pogoda-v-ukraine-gotovit-syurpriz-gde-ozhidaetsya-zhara-do-30-a-gde-proydut-grozy-3165413.html) - Совпадает с базовым текстом по региональному разделению: жара до +30 на юго-востоке и грозы в других зонах. - [Rain, thunderstorms and heat up to +30°C - weather forecast in Ukraine for August 30](https://unn.ua/ru/news/dozhdi-grozi-i-zhara-do-30s-prognoz-pogodi-v-ukraine-30-avgusta) - Относится к 30 августа, а не к 13 сентября — использовано только для блока о нестыковке дат, не как факт текущего прогноза. - [Ukraine will be covered by rain: weekend weather forecast](https://korrespondent.net/ukraine/4908990-ukraynu-nakrouit-dozhdy-prohnoz-pohody-na-vykhodnye) - Подтверждено по источнику korrespondent.net ## ❓ FAQ ### Q: Where will there be rain and thunderstorms on September 13? **A:** Brief precipitation, locally with thunderstorms, is expected in the southern and central regions, as well as in Kharkiv Oblast. ### Q: What will the temperature be on September 13? **A:** At night across the country +8…+16°. During the day, around +13…+15° in the rainy regions, while in the dry southeast the air will warm up to +25…+30°. ### Q: Who do forecasters advise to be more careful? **A:** People with cardiovascular diseases: changeable weather with atmospheric pressure spikes and temperature fluctuations from +15 to +30° is expected.