The island saw its second-hottest June ever, according to Guernsey Met.
With an average daytime temperature of 17°C, last month came within 0.3 degrees of matching the record set in June 1846 where the days averaged 17.3 deg C.
Temperatures were, however, 2.2 degrees above the 30-year average.
Guernsey also saw 9 more hours of sunshine than normal and 6.8mm less rain last month.
Temperatures are building towards this coming weekend with a high of 28 deg C forecast for Sunday.
A yellow heat health alert has been issued for southern England where it will reach the low 30s.
June 2025 in Guernsey - 2nd warmest June since records began in 1843, with the second warmest June day on record, 30.4°C on the 30th. pic.twitter.com/cTBrZMJCpL
— Guernsey Met (@GuernseyMet) July 8, 2025
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