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-year anniversary of the project launch, on Saturday 26 March, these records have now been made publicly available in the official Met Office national record, extending it back 26 years to 1836. The volunteers’ efforts have revealed some new records for extreme dry and wet months across the UK

with statistical @ Crown copyright 2020 1 predictions from pre-season sea surface temperatures in the tropical Atlantic and Pacific. The detailed methodology is described in Part 2. For this forecast the GloSea5 component comprised an aggregation of 42 GloSea5 predictions (ensemble members) initialised between

to shift. In this week’s Met Office Deep Dive, we take a closer look at the rainfall statistics, the geographical disparities, and the atmospheric drivers behind the relentless wet conditions felt by many. A season of extremes Since the start of the year, the UK has seen an exceptional distribution

. In the past few decades there has been an increase in annual average rainfall over the UK, particularly in Scotland for which the most recent decade (2008-2017) has been on average 4% wetter than 1981-2010 average. Summers in the UK, for the most recent decade (2008-2017), have been on average 17

two wetter days being 30 December 1900 (80.9mm) and 3 November 1931 (75.6mm). The charts for Oxfordshire compare the extreme rainfall at the end of September 2024 with that from storm Bert. Totals from Bert were less extreme but show the surplus rainfall compared to average for the season overall

sunniest overall for the UK, with only three others since 1910 recording higher sunshine totals. Despite some wet spells, particularly in western Scotland and northwest England, rainfall overall was below average, and August was especially dry, with the UK receiving just 62% of its average rainfall

greenhouse gas emissions evolve. Weather will continue to vary in future, and may become more variable. Extreme daily rainfall events (1 in 20–years or rarer) in all seasons show increases in median estimates. There is an increased chance of warmer, wetter winters and hotter, drier summers. Sea level

of the year, in the decade (2008-2017) 3 , was on average 0.1 °C warmer than the 1981-2010 average and 0.8 °C warmer than the 1961-1990 average hottest day of 26 °C. 2.5 The most recent decade (2009-2018) has been on average 1% wetter than 1981-2010 and 5% wetter than 1961-1990 for the UK overall. 2.6

, was on average 0.1 °C warmer than the 1981-2010 average and 0.8 °C warmer than the 1961-1990 average hottest day of 26 °C. 2.5 The most recent decade (2009-2018) has been on average 1% wetter than 1981- 2010 and 5% wetter than 1961-1990 for the UK overall. 2.6 Winters in the UK, for the most recent

°C warmer than the 1961-1990 average hottest day of 26 °C. 2.5 The most recent decade (2009-2018) has been on average 1% wetter than 1981-2010 and 5% wetter than 1961-1990 for the UK overall. 2.6 Winters in the UK, for the most recent decade (2009-2018), have been on average 5% wetter than 1981- 2010