Hey there, fellow Londoners and visitors! If you stepped outside today and immediately felt like you’d been dropped into a Mediterranean summer, you’re not alone. Monday, June 22, 2026, is turning out to be another proper scorcher in the Big Smoke. With temperatures pushing into the high 20s and low 30s°C, this ongoing heatwave has everyone chatting about it. As someone who’s survived plenty of unpredictable British summers, I’m here with a practical, straightforward guide to what’s happening, why it matters, and how to dress for it.
Current London Weather Update
Right now, London is enjoying mostly sunny skies with a few scattered clouds. Daytime highs are forecast between 28–32°C (82–90°F), with some spots possibly feeling even warmer. Light easterly winds are making it feel muggier, and overnight lows will hover around 17–20°C — those sticky tropical nights that make sleeping tricky.
Humidity is noticeable, so it’ll feel hotter than the actual temperature suggests. No real rain in sight today, which is great for plans but means the UV index is high. Tomorrow could push even warmer as this high-pressure system settles in. Central London, with all its concrete and glass, will feel the heat most thanks to the urban heat island effect — Trafalgar Square, Hyde Park, and the Thames areas especially.
This Heatwave in Context
We’re in the middle of a significant June heat event. After a record-breaking hot May, June is keeping the momentum going strong. Parks are full, ice cream sales are booming, and every pub garden in the city is packed. But it’s not all rosy — there are warnings about transport issues from overheating tracks and extra care needed for vulnerable people.
The Bigger Picture: Climate Change and London’s Summers
These hotter summers aren’t just random anymore. Experts link the rising frequency and strength of UK heatwaves to climate change. London’s summers are getting warmer and drier on average, while winters are becoming wetter. Looking ahead, typical summer days could be noticeably hotter in the coming decades, with extreme heat events happening more often.
The city’s dense buildings and limited green spaces make things worse locally. While we’re all loving the sunshine right now, it’s a clear reminder that we need smarter long-term solutions — more trees, better urban planning, and stronger heat action plans. It’s no longer “just a hot day” — it’s part of a changing pattern that affects health, energy use, and daily life.
What to Wear in This London Heatwave
Dressing smart for London heat makes all the difference. Here’s what actually works:
- Light and breathable fabrics: Go for cotton, linen, or moisture-wicking materials. Flowy dresses, shorts, loose shirts, or lightweight trousers are perfect. Skip heavy denim and dark colours that soak up heat.
- Sun protection accessories: A wide-brim hat or cap plus good sunglasses are must-haves, especially if you’re out walking or in open spaces.
- Comfortable footwear: Sandals, breathable trainers, or light shoes. Nothing ruins a sunny day like sore feet.
- Evening layers: Carry a light cardigan or jacket for air-conditioned offices, the Tube, or when it cools slightly at night.
- Overall vibe: Loose-fitting, light-coloured clothes that let air move. Don’t forget SPF 30+ sunscreen and reapply often.
Pro tip: Always carry a reusable water bottle and maybe a small portable fan or cooling cloth.
Staying Safe and Enjoying It
- Drink plenty of water (2–3 litres a day minimum).
- Avoid the strongest sun between 11am and 3pm if you can.
- Check on elderly neighbours, kids, and anyone with health conditions.
- Make the most of it — picnic in Hyde Park, stroll along the South Bank, or relax in Regent’s Park. Just stay hydrated and sun-smart.
This heatwave is a mixed blessing: brilliant for outdoor vibes and city energy, but also a wake-up call about our changing climate. Londoners are pretty good at rolling with the weather, and this summer is no different.
