The average temperature<\/strong> for the month was 3.4 \u00b0C<\/strong>, while the highest temperature<\/strong> reached 7.8 \u00b0C<\/strong>. The lowest temperature dropped to \u20138.7 \u00b0C<\/strong>, indicating several distinctly cold days. Total precipitation in December 2025 amounted to 72.8 mm<\/strong>. The chart above shows total December rainfall by year<\/strong>, with 2025 highlighted in orange<\/strong>. It clearly stands out as one of the wetter Decembers<\/strong> in the historical record, though not the absolute maximum.<\/p>\n","protected":false},"excerpt":{"rendered":" This analysis was produced with the help of artificial intelligence, based on the weather data provided by the user. December 2025 marked a clear transition into winter conditions, with cold temperatures, high humidity, and increased windiness. The average temperature for the month was 3.4 \u00b0C, while the highest temperature reached 7.8 \u00b0C. The lowest temperature […]<\/p>\n","protected":false},"author":1,"featured_media":3373,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-3371","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/posts\/3371","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/comments?post=3371"}],"version-history":[{"count":1,"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/posts\/3371\/revisions"}],"predecessor-version":[{"id":3385,"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/posts\/3371\/revisions\/3385"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/media\/3373"}],"wp:attachment":[{"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/media?parent=3371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/categories?post=3371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rosti.fi\/saa\/wp-json\/wp\/v2\/tags?post=3371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Relative humidity<\/strong> remained high at an average of 89.9 %<\/strong>, consistent with frequent cloud cover and moist winter air.
The average air pressure<\/strong> was relatively high at 1012 hPa<\/strong>, suggesting longer periods of stable winter high-pressure systems.
Winds were more pronounced than in autumn: the average wind speed<\/strong> was 3.6 m\/s<\/strong>, and the strongest gusts<\/strong> peaked at 23.2 m\/s<\/strong>, pointing to a few intense winter storms.<\/p>\n\n\n\n\ud83d\udca7 Rainfall in December<\/h3>\n\n\n\n
Compared to the long-term December average of about 46.0 mm<\/strong>, this makes December 2025 significantly wetter than usual<\/strong>. Much of the precipitation likely fell as rain or wet snow, reflecting temperatures that frequently hovered around freezing.<\/p>\n\n\n\n![\"\"](\"https:\/\/rosti.fi\/saa\/wp-content\/uploads\/2026\/01\/image.png\")
<\/figure>\n\n\n\n