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 /

    Before the cool-down: High UV Index in coming days

11:00
22 August 2023

Before the cool-down
High UV Index in coming days

sun flare

With only a few days left of the warm and sunny weather, don't get caught out as the UV reaches high levels across the UK and Ireland.

During summer the UV index in the UK often reaches moderate levels daily beneath unbroken sunshine. Even on a cloudy day, UV levels can still be high with UV able to be reflected and scattered in the clouds.

There are three types of UV rays: UVA, UVB, and UVC. UVC is the most dangerous form of UV radiation, but luckily this is absorbed by the atmosphere before it reaches Earth.

UVB penetrates the top layer of the skin and leads to sunburn. UVA is the most potent source which we are exposed to all year long. It can pass through windows and clouds and penetrates deep into our skin, leading to ageing and increasing our risk of skin cancer.

Because of the dangers associated with increased levels of UV, particularly in the spring and summer months when UV radiation is at its strongest, the UV Index was created. The higher the UV Index, the stronger the UV radiation and faster the skin will burn.

This week, UV levels could reach 'High' for your area as temperatures rise into the mid-to-high twenties beneath plenty of sunshine, reaching 7 on the hottest days.

At this level, there is a risk of burning within 30-60 minutes. As we spend more time outside, be sure to check the UV Index level near you inside our app!

It then looks to cool down by the weekend, but even beneath the strength of the sun your skin can still burn. Check the WeatherRadar for the latest.

Weather & Radar editorial team

More on the topic

Conditions combine to reduce air quality. Light winds and fireworks. . . Tuesday, 10 November 2026
Split image showing a UK wind map with 25 mph near Cardiff and 19 mph near London, beside colourful fireworks above illuminated waterfront buildings.
Tuesday, 10 November 2026

Light winds and fireworks

Conditions combine to reduce air quality
Foggy mornings and crisp autumn days. Your weather - Your shots. . . Sunday, 8 November 2026
Sunday, 8 November 2026

Your weather - Your shots

Foggy mornings and crisp autumn days
Summer heat in the middle of November. Unusual temperatures. . . Tuesday, 10 November 2026
The weather map shows the temperatures in south-eastern Europe and the Mediterranean region. It is particularly warm in the Balkans: temperatures in Belgrade are reaching 25 degrees. A red arrow indicates that warm air is flowing from the central Mediterranean towards Serbia. In Italy, Greece and Romania, too, temperatures are above 20 degrees in many places. By contrast, it is significantly cooler in the Alps and in parts of Central Europe.
Tuesday, 10 November 2026

Unusual temperatures

Summer heat in the middle of November
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
Super Typhoon Bavi threatens Taiwan. Up to 1,000 mm of rain. . . Wednesday, 8 July 2026
The image shows an intense tropical cyclone over the western Pacific, east of Taiwan and the Philippines. The centre of the system is depicted as a light purple and white vortex with a clearly visible eye, surrounded by a ring of red and orange areas indicating the strongest wind speeds. A white arrow marks the typhoon’s predicted track towards the north-west, in the direction of Taiwan. To the west of the storm lie the Philippines, with the cities of Manila and Cebu; to the north of these lies Taiwan, with Taipei. Further west, the Chinese coast, including Hong Kong, and parts of Vietnam can be seen. The coloured wind map shows predominantly green areas outside the storm’s core, indicating significantly weaker winds. White streamlines illustrate the typhoon’s anti-clockwise circulation in the Northern Hemisphere. The highest wind speeds are concentrated around the eye of the cyclone.
Wednesday, 8 July 2026

Up to 1,000 mm of rain

Super Typhoon Bavi threatens Taiwan
Flooding, gales, and heavy snow. Storm Chandra. . . Tuesday, 27 January 2026
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

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwittertikToklinkList