The UK is already undergoing disruptive climate change with increased rainfall, sunshine and temperatures, according to scientists.
The year 2020 was the third warmest, fifth wettest and eight sunniest on record, scientists said in the latest UK State of the Climate report.
No other year is in the top 10 on all three criteria.
The experts said that, in the space of 30 years, the UK has become 0.9C warmer and 6% wetter.