On air now

Lost in Music with Louise Duffy

7 PM-9 PM

How Does Met Éireann Measure T...

News

How Does Met Éireann Measure The Actual Temperature?

Share this article


Do you ever feel it's hotter outside than the weather forecast tells you it is? Is the temperature in your car higher than Met Éireann's official recording?

Met Éireann has been explaining why our car thermometers might be giving us a false reading of the temperature.

We're set to officially call the hot spell a heatwave once the mercury reaches 25 degrees.

Forecasters use Stevenson Screens at climate stations - a box that allows the air to circulate around the thermometer.

That means they're measuring the air temperature, and not the direct sunlight.

Forecaster Joanna Donnelly explained: "The thermometer is about a metre and a half above the ground, and it's away from buildings and away from trees, so that the air can circulate. You're getting a true reading of the actual air temperature.

"If you were to take the temperature over a car park with a black tarmacadam top, you're going to get a higher temperature. If you take a temperature over a shady spot beside a tree, you're going to get a lower temperature."

Today, Met Éireann is forecasting maximum temperatures of 31 or maybe 32 degrees in some inland areas - but, depending where you are, it might well feel warmer than the actual air temperature.

Joanna added: "I know we've got car thermometers showing up 35 and 36 degrees all around the country. It depends on where your spot is - if you are in a particularly hot and sunny spot, certainly it's going to feel hotter than [30 degrees]."


Share this article


Read more about

News

You might like

Live: Title

Now playing

00:00:00 / 00:00:00
Added to queue
Removed from queue

On Air

Share

Share

Up next

Episode title
Show
Duration

You currently have no podcasts in your queue.

Go to podcasts

On Air

Lost in Music with Louise Duff...

Lost in Music with Louise Duffy

7 PM-9 PM

Share

Up next

The Paul McLoone Show

The Paul McLoone Show

9 PM-12 AM

Share

Overnight

Overnight

12 AM-5 AM

Share

Early Breakfast with Pamela Jo...

Early Breakfast with Pamela Joyce

5 AM-7 AM

Share

The Ian Dempsey Breakfast Show

The Ian Dempsey Breakfast Show

7 AM-9 AM

Share

Dermot & Dave

Dermot & Dave

9 AM-12 PM

Share

Muireann O'Connell

Muireann O'Connell

12 PM-2 PM

Share

Fergal D'Arcy

Fergal D'Arcy

2 PM-4:30 PM

Share

The Last Word with Matt Cooper

The Last Word with Matt Cooper

4:30 PM-7 PM

Share

Lost in Music with Louise Duff...

Lost in Music with Louise Duffy

7 PM-9 PM

Share

00:00:00 / 00:00:00

Share on