herald

Tuesday 12 December 2017

Better late than never as we enjoy warmest September in 52 years

Teenagers jumping off the boardwalk bridge at Dollymount yesterday during the warm weather.
Pic Steve Humphreys
18th June 2014.
Teenagers jumping off the boardwalk bridge at Dollymount yesterday during the warm weather. Pic Steve Humphreys 18th June 2014.

The month of September was a true Indian summer with temperatures officially warmer than the month of August.

Parts of the country had the hottest September in 52 years.

It was sunnier, drier and the wind speeds were lower than normal for the month.

Actual drought conditions were recorded for up to 21 consecutive days in the south, southwest and west.

Most weather stations across the country recorded their warmest September since 2006.

Peaking

Met Eireann has confirmed that temperatures for the month right around the country were above average, peaking on September 4.

This created a 15-year record in some places.

The highest temperature that day was 23.9C at Shannon airport, the highest there for 10 years.

Valentia had its warmest September for 23 years and Cork airport had its warmest September since it opened 52 years ago.

The night of September 21 was officially the coldest when air temperatures dropped to 0.8C and the grass temperature to -2C.

The mercury was not the only indicator of the unusually hot month.

Sunshine levels, too, were mostly above normal.

Valentia recorded 166 hours of sunshine and its sunniest September in 42 years.

The sunniest day of the whole month was September 10 with 12.3 hours of sunshine recorded at Belmullet, which made it the sunniest September day in 45 years.

Monthly rainfall was below average everywhere, too.

It was down 25pc across the country and Malin Head had the driest September in 81 years since 1933 with less than a quarter of its average rainfall for the month.

Between September 1 and 21, weather stations in the south, southwest and west recorded less than 0.2mm of rain giving them their driest September in 28 years.

Drought

This was officially declared a drought since 15 days with such a small amount of rain qualifies as an "absolute drought".

The only blip was the freak rainy day on September 5, which gave Shannon airport its third wettest September day since records began 69 years ago.

The dullest place in the country, however, was Casement Aerodrome at Baldonnel in Dublin which had eight very cloudy, sunless days in the month.

csheehy@herald.ie

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