---
title: "Warm up to +25 and rain in the west: how the weather in Ukraine bid farewell to Indian summer on September 18"
description: "On September 18, the air in Ukraine warmed up to +25°, brief rain fell in the west and morning fog stood, while in Kyiv there was no precipitation during the day. Data from the Ukrainian Hydrometeorological Center confirmed the continuation of the Indian summer."
date: 2026-09-18T04:02:00.000Z
lang: en
url: https://xab.info/en/posts/warm-up-to-25-and-rain-in-the-west-weather-in-ukraine-september-18
tags: [ukraine-weather, meteo, september-2026, kharkiv-kyiv, hydro-meteor-center]
publisher: "XAB.info"
---

# Warm up to +25 and rain in the west: how the weather in Ukraine bid farewell to Indian summer on September 18

![Cyclists against a modern bridge on a sunny September day — warm Indian summer weather in Ukraine](https://xab.info/media/2026/09/19/teplo-do-25-i-dozhdi-na-zapade-pogoda-v-ukraine-18-sentyabrya/teplo-do-25-i-dozhdi-na-zapade-pogoda-v-ukraine-18-sentyabrya-1.webp)

## 🎯 Key Points

- On September 18, the air in Ukraine warmed up to +20…+25° during the day, and in the west — to +17…+19°.
- Brief rain fell in places in the west, and in the morning fog stood in the western and Zhytomyr regions.
- In Kyiv and the region there was no precipitation during the day under variable cloud cover, with wind at 3–8 m/s.
- September 2026 forecasts alternate warm intervals up to +25° with periods of bad weather and a Level I danger.

As of September 19, 2026, drawing conclusions on the past 24 hours, it can be stated that on September 18 Ukraine spent the day in warm, summery-soft weather. According to data from the Ukrainian Hydrometeorological Center, as reported by RBC-Ukraine, the air warmed up to +25° in most regions, and variable cloud cover did not prevent the maintenance of a comfortable temperature background. This was a continuation of the prolonged "young Indian summer" that forecasters had been observing in the country throughout the second decade of September.

### Overall picture: warm in the south and east, cooler in the west

The temperature distribution across the country was uneven. In the central, eastern and southern regions, daytime thermometer readings rose to +20…+25°, while in western Ukraine the air warmed only to +17…+19°. It was the western regions that became the main "cold" spot on the weather map: there, brief rain fell in places, while no precipitation was recorded elsewhere. The wind blew from variable directions at 3–8 m/s, which did not create a feeling of coolness and allowed people to maintain the summer rhythm of walks and outdoor leisure.

### Morning fog and specifics for Kyiv

The morning part of the day deserves separate attention: in the western and Zhytomyr regions, fog stood in places, thickening over lowlands and along water bodies and dissipating with the arrival of daytime warmth. In Kyiv and the Kyiv region on September 18, variable cloud cover was observed, with no precipitation during the day, which made the day convenient for urban activity. According to the meteorological service, exactly this "dry" configuration for the capital was typical for the transitional period, when atmospheric fronts had not yet settled on a permanent basis.

### Contradictory data

When comparing forecasts published during September 2026, a discrepancy in forecasters' assessments of weather dynamics is recorded. Thus, as late as September 8, a number of publications (including my.ua) reported "amazing" warmth above +25° and raised the question of how long it would last. At the same time, on September 12 the Ukrainian Hydrometeorological Center declared a Level I danger due to worsening weather (according to unian.net), and at the beginning of the week warned of rain and thunderstorms on Sunday (gazeta.ua). Thus, one version describes a stable Indian summer with temperatures up to +25°, while the other — an alternation of bad weather and storm warnings. Both viewpoints reflect the real instability of September: warm intervals, such as September 18, are replaced by cool rainy episodes.

### How temperature is measured and why a home thermometer "lies"

Against the backdrop of a warm day, it is appropriate to recall the measurement methodology: specialists of the Ukrainian Hydrometeorological Center measure air temperature in standard weather shelters at a height of about two meters from the surface, in the shade, which excludes direct solar heating. This is precisely why the readings of a home thermometer installed on a windowsill, in a car, or on the sunny side of a balcony may noticeably differ from official data. A difference of several degrees is a normal consequence of the difference in measurement conditions, and not an error by the forecasters.

### Summary of the day

In summary: on September 18, 2026, Ukraine met a warm day with a maximum of up to +25° over most of the territory, rain and morning fog in the west and the Zhytomyr region, as well as a dry, precipitation-free day in Kyiv. The weather confirmed the mosaic character typical for the end of September: summer has not yet fully retreated, but cool western influences are already making themselves felt.

## 🔍 Fact-Check Verification

- [Warm up to +25 and rain in the west: what the weather will be like in Ukraine today](https://www.rbc.ua/ukr/news/teplo-25-i-doshchi-zahodi-koyu-bude-pogoda-1789649905.html) - Подтверждает +25°, дожди на западе, туман в западных и Житомирской областях, ветер 3–8 м/с, в Киеве без осадков — совпадает с основой.
- [Weather will surprise Ukrainians on September 8: where it will be above +25 and how long it will last](https://my.ua/news/cluster/2026-09-08-pogoda-udivit-ukraintsev-8-sentiabria-gde-budet-vyshe-25-i-nadolgo-li-eto) - Контекст: тёплый интервал выше +25° в начале сентября 2026, использован для блока о нестабильности.
- [Weather in Ukraine will worsen as early as tonight: Level I danger declared (map)](https://www.unian.net/pogoda/news/shtormovoe-preduprezhdenie-12-sentyabrya-tochnyy-prognoz-sinoptikov-13496610.html) - Контекст: I уровень опасности 12 сентября 2026, отражён в противоречивых данных как альтернативная версия динамики.
- [Rain and thunderstorms: Ukrainians warned of bad weather on Sunday](https://gazeta.ua/ru/articles/life/_dozhdi-i-grozy-ukraincev-predupredili-o-nepogode-v-voskresene/1256223) - Контекст: предупреждение о дождях и грозах, дополняет картину чередования тёплых и дождливых периодов.

## ❓ FAQ

### Q: What was the temperature in Ukraine on September 18, 2026?
**A:** During the day the air warmed up to +20…+25° over most of the territory, and in the west — to +17…+19°.

### Q: Did it rain on September 18?
**A:** Brief rain fell in places in the west, with no precipitation elsewhere; in Kyiv there was no precipitation during the day.

### Q: Where did fog stand in the morning?
**A:** In the western and Zhytomyr regions, fog was observed in places in the morning.

### Q: Why does a home thermometer show a different temperature?
**A:** Specialists measure the air in weather shelters in the shade at a height of about two meters, so readings in the sun or in a car may differ from official data.