00:00As heatwaves continue, how many tropical nights have occurred across Europe?
00:08A tropical night is defined as a night when the temperature does not drop below 20 degrees Celsius.
00:14Over the past few decades, the number of tropical nights in Europe has been rising,
00:18with the rate of warming more than double the global average over the last 30 years.
00:23In 2024, Europe saw the second highest number of tropical nights on record.
00:29The southeast was particularly affected.
00:32In southern Greece, some areas experienced up to 55 more tropical nights than average.
00:38Much of Italy saw up to 50 additional tropical nights, while western Turkey recorded up to 40 more.
00:45Some regions in Croatia, Serbia, Hungary, Romania and Bulgaria experienced up to 36 extra tropical nights.
00:53By contrast, 38% of Europe saw a slightly below average number of tropical nights.
00:59In June and early July of 2025, many areas across the European continent experienced more tropical nights than usual for that period.
01:08Parts of Spain, for example, recorded up to 24 tropical nights in June, which is 18 more than the average for that month.
01:15High night temperatures can pose health risks, as the body may not recover from daytime heat stress as it normally would.
01:23Symptoms of heat stress include increased heart rate, dizziness and, in severe cases, heat stroke.
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