Home
Weather London
WeatherRadar
RainfallRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
Career
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
Densely built-up town on the edge of a steep, eroded cliff. Green slopes and deep cliffs in the foreground.
Wednesday, 28 January 2026

After heavy rainfall

Landslide threatens town in Sicily
For days, the jet stream has been running directly over the Mediterranean.
Friday, 30 January 2026

Storms one after another

Jet stream stirs up the Mediterranean
Wooden walkway at night under red and green auroras. Starry sky above an open landscape.
Tuesday, 20 January 2026

Solar storm hits Earth

Spectacular Northern Lights display
All weather news
This might also interest you
Illustration of white and yellow fireworks on a blue background.
Wednesday, 31 December 2025

Hello 2026

Happy New Year
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
Split image showing aerial flooding in a town with muddy water covering roads on the left, and a rural road on the right blocked by heavy snowfall with vans stopped and a person walking in snow.
Tuesday, 27 January 2026

Storm Chandra

Flooding, gales, and heavy snow
All articles
Weather & Radar
GB
Clima & Radar Brasil
Hava durumu & Radar Türkiye
Időjárás és Radar Magyarország
Καιρός & Ραντάρ Ελλάδα
Météo & Radar Belgique (Français)
Météo & Radar France
Meteo & Radar Italia
Meteo & Radar România
Météo & Radar Suisse (Français)
Meteo & Radars Latvija
OrasOnline Lietuva
Počasí & Radar Czechia
Počasie & Radar Slovensko
Pogoda & Radar Polska
Погода & Радар Україна (українська)
Tempo & Radar Portugal
Tiempo & Radar Argentina
Tiempo & Radar España
Vejr & Radar Danmark
Vreme & Radar Slovenija
Vreme & Radar Srbija
Vrijeme & Radar Bosna
Vrijeme & Radar Crna Gora
Vrijeme & Radar Hrvatska
Време & Радар България
Времето & Радар Macedonia
Weather & Radar India (English)
Weather & Radar Ireland
Weather & Radar USA (English)
Weather & Radar USA (Español)
Weer & Radar België (Nederlands)
Weer & Radar Nederland

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwittertikToklinkList