The 2026 calendar year in the UK began with a wetter January than usual but otherwise the weather in this month was unremarkable.
UK Weather Trends #39 – Annual Temperatures in 2025
The year 2025 was both the hottest and 2nd hottest year on record in the UK. Last year, I used a CUSUM Chart to conclude “if the calendar year average is greater than 9.48 degrees Celsius and the meteorological year average is greater than 9.33 degrees Celsius … (this will) signal an upwards trend change“. By co-incidence, the average 24-hour temperature across the UK in 2025 was 10.09 degrees Celsius for both the calendar (Jan to Dec) and the meteorological (Dec to Nov) years which is clearly higher than these thresholds. It’s only taken me four years of writing to conclude a new upward trend in UK temperatures has begun.
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UK Weather Tracker #107 – December 2025
The 2026 meteorological year in the UK began with a warmer and less frosty December than usual but otherwise the weather in this month was unremarkable.
UK Weather Trends #38 – Autumn 2025
The UK autumn in 2025 was warmer and wetter than usual but not exceptionally so and continues to be consistent with the step change in our autumnal climate seen 25 years ago.
UK Weather Tracker #106 – November 2025
The weather in the UK in November was warmer and wetter than usual but not to an unusual extent.
UK Weather Tracker #105 – October 2025
Like last month, the weather in the UK in October was unremarkable. I must confess I found myself noticing the cold more than usual but perhaps I was subconsciously noticing the lack of sunshine and the narrow range of temperatures as shown in my refreshed dashboard below?
UK Weather Tracker #104 – September 2025
After the hottest summer on record, the weather in the UK in September was unremarkable. However, my local fishing club has just announced that a lake closed due to low water levels has reopened since water levels are back to normal so the above average rainfall in September has been welcomed in many areas.
UK Weather Trends #37 – Summer 2025
The 2025 meteorological summer in the UK was the warmest on record. This came less from heatwaves setting new temperate peaks and more from steady warmth throughout June, July & August. Overall it was sunnier and drier than usual in the UK but not to any significant degree. As a result, whilst the 1st principal component confirms the summer can be regarded as a “good summer”, it was a long way from being an exceptional summer like 1976 & 1995.
UK Weather Trends #36 – Spring 2025
Spring 2025 in the UK was both the hottest & sunniest on record as well as the 5th driest. For sunshine, 2025 was even more extraordinary than the exceptionally sunny spring in 2020 and was the result of 3 very sunny months in a row. For temperature, there was no doubt in my mind this time the data was correct unlike last year when I questioned whether spring 2024 was in fact the warmest in record. The Met Office has not corrected the record so apparently it was.
UK Weather Trends #35 – Winter 2025
Winter 2025 in the UK was unremarkable. Last year I explained I believe our winters are following a steady trend to warmer and wetter winters which began in the early 1980s. The data for the winter just gone doesn’t my conclusions.
