London Weather by Month: Rainfall, Temperatures and Crowds

Quick answer

London is most comfortable for city walking from May to September when average highs reach 18°C to 23°C (64°F to 73°F). November and December are the wettest months, recording approximately 60mm to 70mm of rainfall, while January is the coldest with lows of 4°C (39°F). For peak festival season and outdoor events, visit between June and August.

January

January is the coldest month with daylight lasting about 8 hours. You will experience biting winds when walking across bridges like Waterloo or Southwark. Expect temperatures around 7°C (45°F). Wear a heavy wool coat, thermal base layers, and waterproof boots. Queues at the Tower of London or the British Museum are at their shortest, often under 15 minutes. This is the cheapest time for hotels in areas like Earl's Court or Paddington, where nightly rates can drop below £100 ($125).

February

February remains cold but is statistically one of the driest months. The air feels crisp and clear. It is ideal for museum hopping between the Victoria and Albert Museum and the Natural History Museum in South Kensington, which are connected by underground tunnels from the station. Wear layers including a scarf and gloves. Planning should focus on indoor attractions as parks like Hyde Park remain sparse and muddy.

March

Spring begins with temperatures hitting 12°C (54°F). You will see daffodils in St. James’s Park and Kew Gardens. The weather fluctuates rapidly; one hour of sunshine is often followed by a sharp shower. Carry a compact umbrella and a medium-weight jacket. It is a good month for city walking tours around the City of London or Shoreditch before the heavy summer humidity arrives.

April

April brings "April showers" and lengthening days. Average highs reach 15°C (59°F). The cherry blossoms in Greenwich Park and Battersea Park are at their peak. This is a transition month; a light trench coat or waterproof shell is necessary. It is suitable for hiking the Thames Path or the Capital Ring, though some sections may still be soft underfoot. Avoid the Easter bank holiday weekend if you want to avoid £50 ($63) surcharges on peak rail fares.

May

May is widely considered the best month for visiting London. Temperatures are a mild 18°C (64°F) and the humidity is at its lowest annual point (62%). It is the primary month for the Chelsea Flower Show. You can walk comfortably from Westminster to the South Bank without overheating. Planning should include rooftop bars in Peckham or the City. Wear light layers and comfortable trainers.

June

June marks the start of peak season with highs of 21°C (70°F). The sun doesn't set until nearly 21:30, providing long evenings for outdoor theatre at Regent’s Park Open Air Theatre. This is a prime month for music festivals like BST Hyde Park. The Underground, particularly the Central and Bakerloo lines, becomes very hot as most deep-level trains lack air conditioning. Carry a water bottle and wear breathable fabrics like linen.

July

July is the hottest month, with occasional heatwaves pushing temperatures above 30°C (86°F). It is the best time for day trips to beaches like Brighton (1 hour from London Bridge) or Whitstable (1 hour 20 minutes from St Pancras). The city feels crowded; expect 30-minute waits for major attractions. Wear sun protection and light clothing. Short, intense thunderstorms are common in the late afternoon.

August

August maintains high temperatures of 23°C (73°F) but sees a slight increase in rainfall compared to July. It coincides with the Notting Hill Carnival. Schools are on holiday, so family attractions like the London Eye and Shrek’s Adventure have maximum wait times. This is the best month for hiking in the nearby Surrey Hills or Epping Forest. Air-conditioned buses and the Elizabeth Line are the most comfortable transport options.

September

September offers a dip in crowds while maintaining warmth at 20°C (68°F). The humidity begins to rise again. It is excellent for city walking and exploring the Southbank Centre's outdoor installations. Fashion Week brings heavy traffic to Soho and the Strand. A light jacket is required for the evenings. This is the last reliable month for alfresco dining in Covent Garden or Coal Drops Yard.

October

October is the rainiest month by frequency. Temperatures drop to 16°C (61°F) and the autumn foliage appears in Richmond Park. It is a month for indoor culture, such as the Frieze Art Fair in Regent's Park. Wear a high-quality raincoat and waterproof shoes. Travel times remain standard, but leaf fall can occasionally cause minor delays on Overground rail services. Check the official TfL site for weekend engineering works.

November

November is damp, dark, and misty with highs of 12°C (54°F). Sunset occurs around 16:00 by the end of the month. It is not suitable for beaches or hiking. Focus your planning on the West End for theatre shows or the interior of St. Paul's Cathedral. You will need a warm, water-resistant coat. Afternoon tea bookings in Mayfair should be made 3-4 weeks in advance as indoor activities become the primary draw.

December

December is cold (9°C) and humid (81%). While wet, the city is busy due to Christmas markets at Winter Wonderland and shopping on Oxford Street. Expect heavy crowds and higher hotel prices. Wear a heavy coat, thermal socks, and a hat. Ice skating rinks open at Somerset House and Hampton Court Palace. Travel is restricted on 25 December with no public transport operating; plan for walking or pre-booked private hire vehicles.

Common mistakes

• Relying on the Underground for short distances; walking from Leicester Square to Covent Garden takes 5 minutes, whereas the tube takes longer including station navigation.
• Forgetting that the deep-level Tube lines (Central, Northern, Victoria) are significantly hotter than the surface temperature.
• Not carrying a waterproof layer in summer; London's rain is unpredictable and can occur even on clear days.
• Expecting air conditioning in all budget hotels; many older buildings in Bloomsbury or Bayswater do not have it.
• Booking outdoor activities in November or February without a backup plan for heavy rain or wind.

Plan your trip

Journey Planner creates a logical sequence for your London visit based on these monthly trends. It integrates real-time weather forecasts with average climate data to suggest the best days for the Sky Garden or a trip to Brighton beach. The tool provides cost estimates for the Heathrow Express (£25/$31) versus the Elizabeth Line (£12.20/$15) and generates a packing list tailored to the specific humidity and rainfall of your travel dates. Check the official TfL site for service updates before you travel.