Home
Weather Dublin
WeatherRadar
RainfallRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
    Home / Editor's Pick /

    Myth or fact? Is a "mini-heatwave" coming?

15:00
19 April 2023

Myth or fact?
Is a "mini-heatwave" coming?

blue sky

Now we've all heard rumours of this "mini-heatwave", but are the rumours true?

A long-range forecast from the Met Office seemed to fuel the frenzy with hopes that a "heatwave" was more imminent, especially given temperatures just reached 20°C for the first time this year.

The statement however, detailed the chance of warmth at the end of April in a long-range forecast, after the spell of below-average temperatures coming up.

What is a heatwave?

A heatwave is defined as a prolonged period of hot weather after a temperature threshold has been reached and/or surpassed for a certain number of days. The exact threshold varies depending on location, so is a fairly loose definition

A long-range forecast is purely built on trends and averages. For example, if the next few weeks look to be warmer than average on the weather models, or drier than average.

When there is good agreement across weather models, you can have greater certainty, though it is still very difficult to give any indication of detail such as exact temperatures so many days ahead.

For now, the rest of this week looks to be dominated by high pressure, with temperatures fluctuating around the average. From around the 23rd April however, cold, northerly winds look to plunge in delivering below average temperatures.

In some weather models, at present, there is an indication by the end of that week that milder air from the south will push its way back in, while some others are set on the cold clinging on for a little longer.

How are weather forecasts created?read more

We will be sure to keep you updated on any and all upcoming weather in the longer-term, but you can also check out the WeatherRadar to see the detail in the shorter-term.

Weather & Radar editorial team
More on the topic
A snowy winter in the Andes. Avalanches and storms. . . Tuesday 15 September 2026
Tuesday 15 September 2026

Avalanches and storms

A snowy winter in the Andes
Severe weather in the Mediterranean. Is a medicane on the way?. . . Monday 14 September 2026
A weather map shows a powerful low-pressure system over the Mediterranean, with warning symbols for storms and heavy rain.
Monday 14 September 2026

Is a medicane on the way?

Severe weather in the Mediterranean
How El Niño impacts us worldwide. What actually is it?. . . Tuesday 15 September 2026
teaser
Tuesday 15 September 2026

What actually is it?

How El Niño impacts us worldwide
All weather news
This might also interest you
Storm Chandra makes impact. Severe gales & heavy rain. . . Tuesday 27 January 2026
Split image showing strong winds over the UK on a forecast map and widespread rain and snow on a weather radar map.
Tuesday 27 January 2026

Severe gales & heavy rain

Storm Chandra makes impact
A frozen start to the weekend. Icy conditions. . . Friday 13 February 2026
UK temperature map dated 14.02 showing widespread subzero values in blue shading, with readings such as −4 in Glasgow, −3 in Dublin, and −2 in London, alongside a blue thermometer icon.
Friday 13 February 2026

Icy conditions

A frozen start to the weekend
Bright and warm conditions take hold. Spring-like outlook. . . Thursday 23 April 2026
Split UK map showing warm temperatures up to 21 degrees in orange on the left and clear sunny conditions with temperatures from 12 to 18 degrees on the right, with sun icons across the country.
Thursday 23 April 2026

Spring-like outlook

Bright and warm conditions take hold
All articles
Weather & Radar

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwitteryouTubelinkList