Knowing what to wear in London in May is mostly about preparing for mild afternoons, cool mornings, and occasional rain without carrying a heavy wardrobe. London is firmly in spring by May, so light layers, comfortable walking shoes, and a compact rain layer work better than either winter clothing or a summer-only packing list.
Quick Answer
For London in May, wear a breathable top with a light sweater or cardigan and a lightweight waterproof jacket or trench. Add jeans, trousers, a midi skirt, or a casual dress, plus supportive walking shoes. Carry sunglasses and compact rain protection so you can adjust easily as conditions change.
Last checked: October 1, 2026. Dates and figures were verified against official sources.
Key Takeaways
- London’s May climate is mild rather than reliably warm, so removable layers are more useful than one heavy coat.
- A lightweight waterproof outer layer is practical because May still averages several measurable-rain days.
- Supportive trainers, loafers, flats, or low boots suit long sightseeing days better than thin heels.
- Most West End theatres have no general formal dress code, so comfort matters more than dressing up.
- For RHS Chelsea Flower Show, sturdy shoes and weather-ready layers are more useful than formal clothing.
Weather in London in May
London in May is generally mild, but the difference between a cool morning and a pleasant afternoon can be significant. The safest approach is to dress in layers you can remove as the day warms and put back on after sunset.
The Met Office’s 1991–2020 Kew Gardens climate normals give a clearer picture than a simple daily temperature range.
| May climate measure | Kew Gardens 1991–2020 normal | What it means for clothing |
|---|---|---|
| Average daily maximum | 18.39°C (about 65°F) | A T-shirt, shirt, blouse, or dress can feel comfortable during a mild afternoon. |
| Average daily minimum | 8.15°C (about 47°F) | Keep a sweater, cardigan, or light jacket for mornings and evenings. |
| Average monthly rainfall | 44.59 mm | Pack light rain protection rather than assuming every day will be dry. |
| Days with at least 1 mm of rain | 8.26 days | Rain is possible, but it does not mean you should dress for a downpour every day. |
These are long-term averages, not a forecast for your exact trip. A particular May can still bring warmer spells, chilly evenings, wind, or several wet days in a row. Check the short-range forecast shortly before you leave and adjust the weight of your layers rather than rebuilding your entire packing list.
If your trip falls near a long weekend, also expect central attractions, shopping streets, parks, and transport to feel busier. In England and Wales, the 2027 May bank holidays listed by GOV.UK are Monday, May 3 and Monday, May 31.
Daytime Outfit Ideas for London in May
The easiest daytime outfit is a breathable base layer, one light insulating layer, and weather-resistant outerwear you can carry when you do not need it. This combination works for outdoor sightseeing, warm museums, public transport, cafés, and breezy walks near the Thames.
Start with a cotton T-shirt, long-sleeve top, blouse, or casual shirt. Add a cardigan, fine-knit sweater, overshirt, denim jacket, or similar mid-layer if the morning is cool.
For the outer layer, a lightweight trench, raincoat, or packable waterproof jacket is more useful than a bulky winter coat. You can wear it during showers and fold or carry it when conditions improve.
Easy May outfit combinations
| Plan | Practical outfit | Useful extra |
|---|---|---|
| Museums and central sightseeing | T-shirt or shirt, jeans or trousers, cardigan, supportive trainers | Light waterproof jacket |
| Parks and outdoor sightseeing | Breathable top, comfortable trousers or midi skirt, light jacket | Sunglasses and rain protection |
| Warm, sunny afternoon | Short-sleeve top, light trousers, skirt, or casual dress | Carry a layer for later |
| Cool or showery day | Long-sleeve top, light knit, trousers or jeans, water-resistant outer layer | Shoes that tolerate damp pavements |
A floral or solid-color midi dress is also practical in May because you can add a cardigan or light jacket without changing the whole outfit. If you prefer shorts, save them for genuinely warm forecast days and keep another layer with you for the evening.
Evening Outfit Ideas for London in May
London evenings in May can feel noticeably cooler than the afternoon, so keep one extra layer available even if you spend the day in short sleeves. You rarely need formal clothing for an ordinary restaurant, pub, or West End performance unless the venue or event states otherwise.
A straightforward smart-casual combination can include trousers or dark jeans with a blouse, shirt, knit top, or blazer. A midi dress, skirt with a fitted top, or jumpsuit also works well if you prefer something slightly dressier.
If you are going directly from sightseeing to dinner or a show, choose an outfit that changes easily with one item. Swapping trainers for loafers or flats, adding a blazer, or changing a daytime bag can make a casual outfit feel more polished without carrying a second full set of clothes.
For theatre plans, comfort should come before formality. Visit London’s current West End theatre clothing guidance says there is generally no dress code unless a particular theatre or event specifies one.
Footwear Options for London in May
Your main shoes should be comfortable enough for a full sightseeing day. London trips often involve pavement walking, Underground stations, stairs, museum floors, parks, and unplanned detours, so footwear usually matters more than whether your outfit looks especially formal.
Supportive trainers are the easiest all-purpose option. Loafers, comfortable flats, and low ankle boots can also work well, particularly if they have enough grip for damp surfaces.
For an evening pair, choose something you already know you can walk in. Block heels or low heels are generally easier on pavements and station stairs than narrow stilettos.
Open-toed sandals are not automatically wrong in May, but they are less versatile if a warm afternoon turns into a cool or wet evening. Likewise, heavy winter boots usually take up more suitcase space than the conditions require.
Pro Tip: Wear your main sightseeing shoes before the trip rather than relying on a brand-new pair. Comfortable footwear is much harder to replace during a long sightseeing day than a forgotten scarf or umbrella.
Accessory Tips for London in May
Accessories are most useful in May when they help you adapt without adding bulky clothing. Sunglasses, a lightweight scarf, compact rain protection, and a practical hands-free bag cover most everyday needs.
A small umbrella is easy to keep in a day bag. A lightweight waterproof jacket with a hood is another good option, especially on days when showers are already in the forecast.
A light scarf can add warmth on a breezy evening without taking up the space of a heavier sweater. Sunglasses are useful for bright periods in parks, outdoor attractions, and along the river.
For your everyday bag, a crossbody or comfortable backpack leaves your hands free while you use your phone, carry tickets, or move through stations. Choose a size that can hold your removable layer and rain protection without becoming uncomfortable to carry.
Packing Essentials for a Trip to London in May
A London May packing list works best as a small capsule wardrobe rather than a collection of single-use outfits. Pick tops, bottoms, and layers that can be mixed together, then reserve only a small part of your luggage for occasion-specific clothing.
- Breathable short-sleeve and long-sleeve tops
- A light sweater or cardigan
- A lightweight trench, raincoat, or waterproof jacket
- Jeans, chinos, tailored trousers, or other comfortable bottoms
- A skirt, dress, or alternative smart-casual option if you enjoy wearing one
- Supportive walking shoes
- A smarter but still walkable second footwear option if your plans require it
- Compact umbrella or hooded rain layer
- Sunglasses
- Lightweight scarf
- Crossbody bag or practical daypack
What you probably do not need
For a normal May trip, a thick winter coat, bulky insulated boots, and heavy winter scarves are usually less useful than several lighter pieces. They take up suitcase space and can become uncomfortable inside shops, museums, restaurants, and public transport.
A suitcase filled only with summer clothing is the opposite mistake. Even if the forecast includes warm afternoons, a light sweater and weather-resistant outer layer give you much more flexibility after sunset or during a cooler spell.
What to wear in early May versus late May
The same layering system works throughout the month. For an early-May trip, lean slightly more toward long sleeves and a warmer mid-layer; for late May, you may use short sleeves more often if the forecast is mild.
Do not treat that as a guarantee that late May will be warmer every day. Actual weather can vary enough that the forecast for your travel dates should decide whether your cardigan is lightweight or slightly warmer.
Cultural and Venue Considerations for Dressing in London
There is no single London dress code for visitors. Everyday clothing ranges from casual to formal, so you are better off dressing for the weather, your comfort, and the specific places on your itinerary than trying to copy a supposed citywide style.
For ordinary sightseeing, museums, markets, public transport, and casual restaurants, neat everyday clothing is fine. Individual restaurants, clubs, religious buildings, private events, and hospitality areas can set their own rules, so follow any instructions supplied with your booking.
What to wear to the RHS Chelsea Flower Show
The RHS Chelsea Flower Show runs from May 18 to 22, 2027 at Royal Hospital Chelsea. The regular show does not have a general dress code, so practical clothing is more important than formalwear.
The RHS’s own Chelsea Flower Show clothing advice recommends sturdy shoes because visitors do a lot of walking. It also advises preparing for both sun and rain, with layers and a light waterproof rather than relying only on an umbrella.
A blouse or shirt with trousers, a midi dress with a light jacket, or another comfortable smart-casual outfit can therefore work well. Prioritize footwear you can stand and walk in for hours.
What to wear to a West End show
You do not need formal eveningwear for most West End performances. Jeans, trousers, a shirt, a casual dress, or another comfortable outfit are normally acceptable unless your ticket or venue gives a specific instruction.
If the theatre is only one part of a longer sightseeing day, plan your outfit around walking comfort first. A blazer, scarf, smarter top, or second pair of shoes can change the look without making you carry formal clothes around London all day.
If you’re planning a trip to London in May and enjoy food and travel reading as well, you may also be interested in the delightful world of Asian melon.
Frequently Asked Questions
What is the weather like in London in May?
London in May is generally mild, with cool mornings and more comfortable afternoons. Met Office 1991–2020 normals for Kew Gardens show an average daily maximum of 18.39°C and minimum of 8.15°C, with 44.59 mm of rainfall during the month.
What clothing should I pack for London in May?
Pack light layers for London in May. Useful choices include breathable tops, a sweater or cardigan, a lightweight waterproof jacket, comfortable trousers or jeans, supportive walking shoes, sunglasses, and compact rain protection.
Can I wear shorts and T-shirts in London in May?
Yes, shorts and T-shirts can work on a genuinely warm May day. Keep a sweater, cardigan, or light jacket with you because mornings, shaded areas, rainy periods, and evenings can feel much cooler than a sunny afternoon.
Are there any clothing items I should avoid wearing in London in May?
Avoid relying entirely on either heavy winter clothing or summer-only outfits. A bulky insulated coat is usually unnecessary, while thin sandals and bare arms alone may leave you uncomfortable if the temperature drops or rain arrives.
What accessories should I bring to London in May?
Bring accessories that help you adapt to changing conditions. A compact umbrella or hooded rain layer, sunglasses, a lightweight scarf, and a comfortable crossbody bag or backpack are useful for a typical sightseeing day.
Do I need to dress up for the theatre in London?
No, most West End performances do not require formal clothing. Comfortable everyday or smart-casual clothes are normally fine unless the theatre or a particular event gives you a specific dress code.
What should I wear to the Chelsea Flower Show?
Wear comfortable clothing, sturdy walking shoes, and layers that can handle both sunshine and rain. The regular RHS Chelsea Flower Show has no general dress code, so practical footwear and light weather protection should be your priorities.
Sources
- Met Office — Kew Gardens long-term averages: 1991–2020 May temperature, rainfall, rainfall-day, and climate figures.
- GOV.UK — UK bank holidays: 2027 Early May and Spring bank holiday dates for England and Wales.
- Royal Horticultural Society — RHS Chelsea Flower Show: 2027 show dates.
- Royal Horticultural Society — Chelsea visitor tips: footwear, layers, rain protection, and dress-code guidance.
- Visit London — What to wear to the theatre: current guidance on West End theatre dress codes.
