For most travelers, London calls to mind images of fog, drizzle, and the comforting gloom of a city long defined by its gray skies and steely palette. It’s the city of trench coats and umbrellas, of hurried footsteps on wet pavements. But, every so often, London shifts. The summer of 2025 is one of those rare moments—when the capital, flushed with an unusual stretch of sun and heat, feels like somewhere entirely new. The familiar landmarks soften, new rituals emerge, and life spills outdoors with a mood that feels almost Mediterranean in spirit. From families playing in the fountains at Coal Drops Yard to skaters carving lines beneath the brutalist ceilings of the Southbank, the city seems to exhale—inviting both residents and visitors to slow down, stay out late, and see London in a different light.
This photo series—captured by our frequent collaborator, London-based photographer Marc Sethi offers a lens onto this fleeting season of sun and spontaneity. With bylines in The Guardian, National Geographic, Vanity Fair, and Escape Artist, and known for his ability to distill raw human energy into quiet, narrative moments, Sethi takes us beyond the postcard version of England’s capital. With images spanning from the shaded gardens of Bloomsbury to the sunlit decks of Regent’s Canal houseboats, Sethi takes us beyond the postcard clichés.
Here are the small moments that define summer in London as we rarely see it: booksellers afloat on canal waters, students weaving between fountains, and creative enclaves soaking in the unexpected light.
Read more like this: How to Avoid Summer Travel Hell
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Marc Sethi is a London-based photographer whose work—featured in The Guardian, National Geographic, and Vanity Fair—captures the human stories and street-level subcultures that define cities in transition.
FAQ on Summer in London
When is summer in London?
Summer in London typically runs from June through August, with the warmest and sunniest weather usually peaking in late July. It’s a great time for outdoor dining, exploring green spaces, and soaking up the city’s festive energy.
What to do in London this summer?
London truly comes alive in the summer! You can picnic in Hyde Park, catch open-air theatre at Regent’s Park, or explore riverside festivals along the Thames. Don’t miss iconic summer events like Wimbledon, rooftop cinema nights, and weekend markets at Columbia Road or Borough. A sunset ride on the London Eye or relaxing by the fountains at Coal Drops Yard adds to the city’s warm-weather charm.
How hot does London get in the summer?
London summers are usually mild and pleasant, with average daytime temperatures ranging from 20°C to 26°C (68°F to 79°F). But in recent years, heatwaves have pushed temperatures into the low 30s°C (mid-80s°F). It’s always wise to pack sunscreen and stay hydrated, especially during peak afternoons.
What to wear in London summer?
Layering is key. Light, breathable clothing like cotton dresses, T-shirts, and shorts are ideal—but always bring a light jacket or cardigan, as evenings can get cool. Comfortable walking shoes are a must, and an umbrella or light raincoat can be handy for sudden showers. Londoners love a smart-casual style, even in summer.
If you’re considering traveling or moving abroad, be sure to explore your healthcare options. Visit International Citizens Insurance to learn more and get a free quote.
