While July broke all kinds of records during a stifling month of relentless sunshine and heat, August was a little more muted.
Rather than searing temperatures, the month was consistently warm, even at night.
But, as Manx Grand Prix organisers will be well aware, the long, dry spell was interrupted by showers and bursts of heavy rain at times.
Ronaldsway Met Office met technician Beth Penhallurick has provided an overview of the month.
‘The mean 24-hour temperature was 16.7°C, 1.3°C above the August climatological average,’ she said, ‘making August 2026 the fourth warmest August on record.
‘The mean minimum temperature was 13.7°C, making it the third warmest August nights on record. Meanwhile, the mean maximum temperature was 19.6°C which is the eighth warmest August on record.’
But the month lacked any searing temperatures, ensuring it fell short of breaking records for daytime heat.
‘The highest maximum temperature was just 23.6°C on August 12, 4.3°C below the August record set in 2022,’ Miss Penhallurick explained.
‘Therefore, unusually warm nights played a significant role in making August 2026 consistently warm despite a lack of extreme daytime temperatures.’
Despite causing havoc for the MGP and Classic TT, August was still much drier than average, with 40.3mm of rain recorded at Ronaldsway - 59% of the August average of 68.2mm.
There were 15 rain days, which is about average, but precipitation was generally light when it did occur.
There were 181.4 hours of sunshine, slightly below average, with August 22 the sunniest day with 13.1 hours. But only 1.6 hours were recorded between August 16 and 18.
There was only one day of strong winds and no gales, while fog occurred on just one day and no thunder was reported at the airport.



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