London · Month comparison

August vs May

May ranks #1 overall vs August at #8. Chelsea Flower Show, warm parks, 18°C — London at its most seductive before summer prices arrive.

London August — performers and revellers on a truck at Notting Hill Carnival

August

#8 of 12 months

Strong option

Notting Hill Carnival bank holiday weekend — and everywhere else, maximum crowds and expense.

  • ↑Notting Hill Carnival (August bank holiday weekend): Europe's largest street festival — two days of Caribbean food, sound systems, and costumed bands through west London
  • ↑Edinburgh Fringe spill-over energy as performers pass through London on their way north
London May — sunlight filtering through tall trees in Hyde Park on a warm spring afternoon

May

#1 of 12 months

Best match

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
FactorAugustMay
Weather score
8
8
Value score
3
6
Crowd score
2
6
Events score
10
8
Atmosphere
7
8
Avg high temp24°C18°C
Monthly rain50mm49mm
Daily sunshine6.5hrs6.4hrs

August trade-offs

  • ↓Highest crowds of the year — Londoners leave for the Med and are replaced by international summer tourism en masse
  • ↓Notting Hill Carnival weekend means acute accommodation shortage and price spikes in W11 and Kensington
  • ↓The tube in August is brutal without air conditioning on many lines — central London travel requires patience

May trade-offs

  • ↓Prices climbing toward summer — a week at a 3-star central hotel costs noticeably more than March
  • ↓Chelsea Flower Show week sees south-west London traffic disruption and accommodation pressure
  • ↓Half-term (late May bank holiday) briefly crowding family attractions across the city
See all 12 months for London →August in detail →May in detail →
Scores compare months within London. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →