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 /

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
Wind map of the UK and Ireland showing a deep low-pressure system, Storm Dave, with red-orange zones and strong gusts up to 55 mph, plus a windsock warning icon indicating hazardous conditions.
Saturday, 4 April 2026

Severe overnight gales

Storm Dave makes impact
Split weather graphic showing a low-pressure system with tight isobars over the UK on the left and a wind map on the right with strong gusts up to 90 mph, plus a windsock warning icon.
Thursday, 2 April 2026

Gales and blizzards

Storm Dave disrupts Easter weekend
Split image with Cromer Pier at sunset on the left in soft orange-blue tones and a moonlit Canterbury church with dramatic clouds on the right, lit by a streetlamp.
Sunday, 5 April 2026

Your weather - Your shots

Spring captured after the clock change
All weather news
This might also interest you
Split image showing a person in a yellow jacket struggling against strong winds and heavy rain on a street at night on the left, and an Irish wind forecast map on the right with red and purple shading, gusts up to 75 mph, and a wind warning icon, divided by a curved white line.
Saturday, 24 January 2026

On this day...

Historic Storm Éowyn arrives
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
Weather graphic showing rain and wind fields over the Canary Islands and a central warning symbol.
Friday, 12 December 2025

Storm and rain

Turbulent weather in the Canary Islands
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