October 2025 has earned its place as one of the coldest Octobers in recent Czech history. The month brought unusually low temperatures, with daily maximums above 20°C appearing only twice throughout the entire period. While precipitation levels remained close to normal for this time of year, the persistent chill marked a notable departure from the warmer autumns that have characterized recent years.
According to climatological data released by the Czech Hydrometeorological Institute (CHMI), the average air temperature for October stood at 7.9°C—0.3°C below the 1991–2020 climate normal. Though this makes it only the 28th coldest October since 1961, it represents the coldest October in nearly a decade, surpassed in chilliness only by October 2016, which registered temperatures 0.5°C lower. The contrast with recent years is striking: most Octobers in the past decade have been notably warm, with 2023 recording an average temperature of 11.1°C.
The month’s cold character was primarily driven by its opening week, when most days saw temperatures significantly below normal. The subsequent weeks brought an alternating pattern of warmer and cooler periods, creating an unpredictable rhythm that kept forecasters and residents alike on their toes. This variability, however, couldn’t overcome the deficit created by that initial arctic blast.
Perhaps the most telling statistic of October 2025 concerns the rarity of genuinely warm days. Maximum temperatures reaching at least 20°C occurred on just two occasions this year: once in České Budějovice on October 21st, and again in southern Moravia on October 23rd. This scarcity stands in sharp relief against last year’s 11 such days, and 2023’s impressive tally of 19. For many Czechs, the extended absence of mild autumn weather served as an early reminder of winter’s approach.
Precipitation patterns, by contrast, adhered more closely to seasonal expectations. October delivered 96 percent of its typical rainfall, with 48 millimeters falling in Bohemia and 46 millimeters in Moravia. The relatively even distribution across regions meant that no area experienced dramatic flooding or drought conditions. However, these normal October rains did little to address the precipitation deficit accumulated during the first half of the year, leaving water management concerns unresolved as the region heads into winter.