It was also the warmest, according to Ronaldsway Met Office
This May was the sunniest on record in the Isle of Man.
Ronaldsway Met Office says just 0.4mm of rain fell in the first three weeks of the month.
Even with more unsettled weather in the last week, total rainfall only came to 23.7mm which is less than half the month's average.
There was also 319.4 hours of sunshine, which is 16 hours more than the previous record set in May 1977.
Temperatures were also record-breaking with the mean of daily peaks coming to 16.7 degrees Celsius - two degrees above the long-term average.
The hottest day of the month was the 12th, with 23.2°C achieved at Ronaldsway.
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