rprt.ing

One report from rprt.ing, which covers how the UK is doing in official statistics.

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Environment and climate

Sea temperature

For context
0.84°C warmer than the 1961 to 1990 average at the world’s sea surface, 2025, the third warmest on record

The warmest year was 2024 at 0.95°C above average. Records start in 1850

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What it means: the average temperature at the surface of all the world’s oceans, from ships and buoys, compared with 1961 to 1990. The oceans absorb most of the extra heat trapped by greenhouse gases. A regular UK-only series is not published as open data; the seas around the UK have warmed faster than the global average, with a marine heatwave in June 2023. Shown for context.

Source: Met Office Hadley Centre, HadSST.4, annual global series.