- Why this month: This is London's signature flower week, and west London looks sharper, greener, and more theatrical than at any other spring point.
- Best time: Early morning for the show, late afternoon for the floral shopfront trail.
- Book by: Two to three months ahead for the Flower Show.
- Crowds: High during May 19–23, 2026, especially around Sloane Square and King's Road.
- World-class garden design meets a very London street scene of polished shopfronts, smart crowds, and camera stops every few minutes.
- Don't miss: Chelsea in Bloom running alongside the Flower Show from May 19–23, 2026.
- Insider tip: Stay on foot between Sloane Street and King's Road; buses crawl during peak Chelsea week traffic.
London in May: Weather, crowds, events and what to do
London in spring: How May compares
| Category | April | May | June |
|---|---|---|---|
Weather | 9–15°C (48–59°F), mixed, showers likely | 12–18°C (54–64°F), mild, comfortable, occasional rain | 15–21°C (59–70°F), warmer, longest days, occasional heat spikes |
Crowds | Moderate, heavier over Easter weekend | Moderate, high on bank holidays and Chelsea week | High, especially late June as Wimbledon starts |
Atmosphere | Early spring, tulips, lighter but still jacket weather | Green, social, terrace season, long evening walks | Full summer build-up, busier streets, more outdoor events |
Key events | Easter weekend, London Marathon in late April | Chelsea Flower Show, Chelsea in Bloom, FA Cup Final | Trooping the Colour, Royal Ascot, Wimbledon from June 29, 2026 |
Public holidays | Good Friday and Easter Monday can reshape opening hours | Early and late May bank holiday periods affect crowd patterns | No May-style bank holiday pressure, but event-driven peaks |
Budget | Often slightly cheaper than May outside Easter | Mid-range, with short sharp spikes on event weeks | Higher, especially for central stays and big-ticket attractions |
Best for | Museum-heavy trips, spring gardens, lighter crowds | Balanced first trips, garden lovers, long walking days | Outdoor planners, big-event travellers, longest daylight |
Book early? | Easter hotels and marathon weekend, yes | Chelsea week, bank holidays, West End weekends, yes | Wimbledon, Ascot, prime hotels, absolutely |
Transport tips | Marathon road closures in late April | Bank holiday rail works can appear; check weekend engineering notices | More airport pressure and heavier visitor traffic across central lines |
Top things to do in London in May
Offbeat experiences in May
Planning your May visit
| Lead time | What to book | Why & when | Seasonal price change |
|---|---|---|---|
2–4 months ahead | Chelsea week hotel stays, especially near SW3 and Victoria | May 19–23, 2026 drives the sharpest spring demand in west London | Chelsea week in SW3/Knightsbridge: +20–40% vs mid-May weekdays |
4–8 weeks ahead | From London: Harry Potter™ Warner Bros. Studio Tour with Return Transport | From May 7, 2026 the First Year at Hogwarts event adds demand | Event dates and weekends: often +10–20% vs quieter midweek slots |
3–6 weeks ahead | London Eye Fast-Track Tickets | Warm weekends and later sunsets make prime viewing slots go first | Weekend and sunset-facing times: +10–20% vs weekday mornings |
2–4 weeks ahead | The Lion King | Friday-Saturday evening seats and stronger stall positions thin out first | Friday-Saturday evenings: +10–15% vs midweek seats in the same period |
1–2 weeks ahead | Tower of London Tickets with Access to the Crown Jewels | Weekend mornings and bank holiday dates are the pressure points | Bank holiday weekend slots: +5–15% vs standard weekdays |
5–10 days ahead | Thames River Dinner Cruise with Sunset Views and Drinks | Warm, dry forecasts push river plans up late | Sunny Friday-Saturday sailings: +10–20% vs weekday departures |
2–5 days ahead | Frameless London: Immersive Art Experience Tickets | These are easier last-minute adds unless a bank holiday hits | Usually near base price; occasional late-week uplift on holiday weekends |
May highlights: Must-do experiences for different travellers
London in May: Your perfect 3-day itinerary
Best day trips from London in May
Go shopping in London in May
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