Best time to visit London for good weather
When is the best weather in London? Monthly breakdown of temperature, rainfall, and sunshine hours — ranked by what actually matters for your trip.
Best month
May
Chelsea Flower Show, warm parks, 18°C — London at its most seductive before summer prices arrive.
↑Chelsea Flower Show (third week of May): world-famous garden event with real local excitement around it
↑Royal Parks in full green: Londoners picnic in Hyde Park, Regent's Park, and Hampstead Heath in earnest
↑Sunset at 21:00 and 18°C highs make evening walks along the Thames or South Bank genuinely lovely
All months ranked — Good weather
Best match
Chelsea Flower Show, warm parks, 18°C — London at its most seductive before summer prices arrive.
#1 for good weather
Best match
Pride, Wimbledon warm-up, 21°C and sunset at 21:20 — London's most event-rich month.
#2 for good weather
Best match
London's great value window — warm enough for parks, light until 8pm, before summer prices hit.
#3 for good weather
Best match
London's hottest month — Wimbledon, outdoor concerts, and peak prices with school holidays looming.
#4 for good weather
Best match
London's best-kept secret — 20°C, schools back, crowds thin, and the autumn cultural season opens.
#5 for good weather
Strong option
Notting Hill Carnival bank holiday weekend — and everywhere else, maximum crowds and expense.
#6 for good weather
Strong option
Spring stirs — daffodils in Hyde Park, daylight returning, and prices still well below peak.
#7 for good weather
Strong option
Autumn London at a good price — October half-term aside, crowds are manageable and culture is rich.
#8 for good weather
Strong option
London's driest winter month — marginally brighter than January, with BAFTA and half-term energy.
#9 for good weather
Worth considering
The quiet before Christmas — good theatre prices, empty galleries, and only 2 hours of daylight.
#10 for good weather
Worth considering
Empty museums, cheapest hotels — but barely 2 hours of daylight make this the toughest trade-off.
#11 for good weather
Worth considering
Christmas lights on Regent Street, mulled wine in Borough Market — cold but London earns its festive reputation.
#12 for good weather