AEMET confirmed that June 2025 was Spain’s hottest June since 1961 and the most anomalously warm month in the entire series. The summer would also turn out to be the hottest.
Spain’s State Meteorological Agency (AEMET) published its June review in early July 2025: the mean temperature in mainland Spain was 23.7°C, 3.6 degrees above the 1991–2020 average. It was the hottest June since the series began in 1961, 0.9 degrees warmer than June 2017, the previous record, and the month with the largest warm anomaly in the whole series, ahead of October 2022.
What we know
The month ended with a heatwave that began in late June and continued into the first days of July, with temperatures above 40°C across much of the country and records at many stations. Maximum temperatures were on average 4.2 degrees above normal and minimums 2.9 degrees, with many tropical nights. It was also a dry month.
The heat persisted through the summer. In September the Ministry for the Ecological Transition and AEMET confirmed that summer 2025 had been the hottest on record, in a year also marked by August’s great wildfires in the west of the peninsula.
Why it matters
Episodes of extreme heat have direct effects on health, above all among older people, and on the economy: they push up electricity use, reduce productivity in outdoor work, damage crops and raise the risk of fire. Since 2023 employment rules have required outdoor work to be adapted or suspended during orange or red heat warnings.
What to review
For businesses, it is worth having a heat protocol for exposed staff and reviewing risks to facilities and supply chains. For families, heat is also a question of wealth: insulation and air-conditioning of homes, insurance against fire and damage, and the future value of property in the most exposed areas. Ask your adviser how to take it into account.
Heat records are no longer a rarity: they are the scenario to plan for.
This article is general information. It is not legal, tax or investment advice, and it does not take anyone’s particular circumstances into account.
