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Forecast for 2023

Met Office predicts 2023 will be one of our hottest years, and the 10th consecutive year at 1°C or above
Bright sun with beautiful beams in the sky with clouds

The Met Office annual global temperature forecast for 2023 suggests that this year will be one of the Earth’s hottest years on record.

The average global temperature for 2023 is forecast to be between 1.08 °C and 1.32°C (with a central estimate of 1.20 °C) above the average for the pre-industrial period (1850-1900): the tenth year in succession that temperatures have reached at least 1°C above pre-industrial levels.

‘The global temperature over the last three years has been influenced by the effect of a prolonged La Niña – where cooler than average sea-surface temperatures occur in the tropical Pacific. La Niña has a temporary cooling effect on global average temperature.

‘For next year our climate model is indicating an end to the three consecutive years with La Niña state with a return to relative warmer conditions in parts of the tropical Pacific. This shift is likely to lead to global temperature in 2023 being warmer than 2022.’

DR NICK DUNSTONE
Met Office, lead for the 2023 global temperature forecast

A record-breaking year?

The series of warmest years began in 2014; since then global temperatures exceeded 1.0°C above the pre-industrial period (1850-1900).

The forecast is based on the key drivers of the global climate, but it doesn’t include unpredictable events such as large volcanic eruptions, which would cause a temporary cooling.

‘So far 2016 has been the warmest year in the observational record which began in 1850. 2016 was an El Niño year where the global temperature was boosted by warmer waters in parts of the tropical Pacific. Without a preceding El Niño to boost global temperature, 2023 may not be a record-breaking year, but with the background increase in global greenhouse gas emissions continuing apace it is likely that next year will be another notable year in the series.’

PROF. ADAM SCAIFE
Head of Long-range Prediction at the Met Office

Keeping 1.5 alive

Global temperatures are rising and there is a need to act swiftly to keep global mean temperature below 1.5°C to avoid the worst impacts of climate change.

The Met Office’s forecast for the 2022 global mean temperature, issued at the end of 2021 (0.97 °C to 1.21 °C with a central estimate of 1.09°C), agrees well with the latest observations of global temperature so far this year.

Data from Jan-Oct 2022 show the global mean temperature is around 1.16 ⁰C above pre-industrial levels.

‘The fact that global average temperatures are at or above 1.0°C for a decade masks the considerable temperature variation across the world. Some locations such as the Arctic have warmed by several degrees since pre-industrial times.’

DR DOUG SMITH
A leading expert in climate prediction

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