Home / Editor's Pick /

Summer solstice: Longest day of the year is here

07:00
21 June 2025

Summer solstice
Longest day of the year is here

summer solstice© Shutterstock

Today we mark the summer solstice, the longest day of the year, signalling the start of astronomical summer.

A solstice occurs when one of Earth’s pole reaches its maximum tilt towards the Sun. For those of us in the Northern Hemisphere, it will be the longest of the year, but for those in the Southern Hemisphere, it’s the opposite.

On the summer solstice, the sun travels its longest path after rising, reaching its northernmost point. The precise time of the summer solstice on June 21st is at 03:42 am.

The summer solstice is over 9 hours longer in daylight length than the winter solstice! Make sure you make the most of the additional daylight!

Hottest solstice ever?

In the midst of a heatwave, temperatures are expected to reach up to 33°C. The hottest solstice on record was in 2017 with a high of 34.5°C.

The sun is also at its strongest on the solstice, which means you need to take extra precaution in the sun, especially as the UV Index is forecast to reach high levels across some parts of England and Wales.

Check out the UV Index hereread more

While meteorological summer began on June 1st, and will last until August 31st, astronomical summer relies on the tilt of the Earth and its rotational axis, which will end on September 22nd, when the autumn equinox then occurs.

Ryan Hathaway
More on the topic
Weather radar showing clouds and showers over Algeria and Morocco. Next to it, a warning map with the rain area in Algeria marked. Surrounding regions mostly sunny and dry.
Thursday, 18 December 2025

Algeria affected

Rain in the desert
People walk through muddy streets after heavy rain, alongside a rain map of Morocco.
Tuesday, 16 December 2025

New rainfall in sight

Fatalities in Moroccan floods
Weather map of Europe with high and low pressure areas marked. Isobar lines show the pressure distribution, alongside a forecast map. Different weather conditions from northern to Southern Europe.
Monday, 22 December 2025

"High over low"

Blocking weather conditions at Christmas
All weather news
This might also interest you
Split weather map showing UK wind speeds in orange-red shades up to 40 mph on the left and warning levels in green-yellow on the right, with a central wind warning sign.
Wednesday, 22 October 2025

Warnings active

Storm Benjamin impacts the UK
Outline of Santa Claus with a yellow and white hat, "Ho-Ho-Ho" next to the outline above a Christmas tree.
Thursday, 25 December 2025

Merry Christmas!

Wishes from Weather & Radar
Wednesday, 27 August 2025

Breakfast brief

Frontal system brings heavy rain
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