What to Wear in London in May
London in May: 19°C / 66°F afternoons, 9°C / 48°F mornings — a 10°C / 50°F daily swing — with 8 rain days of persistent light drizzle.
- A waterproof cotton trench (Burberry, Aquascutum, Mackintosh — this is the city that invented it)
- Merino or cotton knit sweater as the 9°C / 48°F morning layer
- Breton stripe or simple long-sleeve tee under the knit
- Dark straight-leg jeans or tailored trousers — hide the splash marks
- Ankle boots or Vans-style sneakers with rubber soles
- A windproof compact umbrella (Knirps, Blunt, Fulton) — cheap ones blow out
- Suede boots or shoes — one drizzle stains them
- A North Face technical shell instead of a trench — wrong silhouette here
- Trust the morning forecast — 'four seasons in one day' is not a joke
May in London is pleasant but unreliable. Met Office climate data (Greenwich Park) put the afternoon high at 18.6°C / 65°F and morning at 9.1°C / 48°F, an almost 10-degree daily swing, with around 8 rain days and 199 hours of sunshine. The range matters: a morning can start at 9°C / 48°F and an afternoon can touch 22°C / 72°F on warm days, or stay at 14°C / 57°F under cloud. London rain is rarely a downpour; it's a persistent light drizzle that arrives unannounced and returns two hours later. Locals dress for this with layers they can rearrange fast: a jacket over a knit over a tee, where at least two of the three come off by lunch. The London rule: never look like you prepared for weather, just look like you happen to own a good trench and boots that handle damp. Classic British style leans structured cotton, wool, and leather — a well-cut trench reads more local than any technical jacket.
The London rule: never look like you prepared for weather, just look like you happen to own a good trench and boots that handle damp.
The capsule
01Waterproof trench coat (classic British)London's defining garment. A good trench reads both practical and polished — this is the city that invented it. Burberry, Aquascutum, Mackintosh, or a reasonable cotton version. Belt on rainy days, tie back on dry.
02Merino or cotton knit sweaterThe 9°C / 48°F morning layer. Thin enough to wear under a trench, warm enough for an evening walk along the South Bank.
03Breton stripe or simple long-sleeve teeUnder the knit or alone on warmer afternoons. Stripes read deliberate in London in a way they don't in warmer cities.
04Dark straight-leg jeans or tailored trousersDark bottoms hide the splash marks you'll collect crossing Waterloo Bridge. Tailored trousers dress up easily for a West End show or a Marylebone dinner.
05Midi skirt with tightsFor the day that calls for something other than trousers. Tights handle the cool morning; the skirt reads appropriate for a 20°C / 68°F afternoon if the sun arrives.
06Ankle boots or Vans-style sneakers with rubber solesThe London shoe from October through May. Handles puddles, cobblestones, and Tube escalators. Vans, Chelsea boots, or low leather ankle boots all work. No suede — May rain will kill them in a day.
07Structured leather shoulder bagLarge enough for an umbrella, a scarf, and a paperback from Daunt Books. Leather handles rain better than canvas and ages into the city.
- Compact windproof umbrella — Not the collapsing supermarket kind — a windproof compact (Knirps, Blunt, Fulton) that survives a Thames crossing. London wind tests cheap umbrellas and wins.
Day to night
Breton tee · merino knit · dark jeans · trench · ankle boots · shoulder bag. Morning walk through Borough Market.
Long-sleeve tee · midi skirt · tights · ankle boots · silk scarf. Dinner in Soho, a show in the West End.
What to avoid
- Suede boots or shoes — May rain will stain them within a day
- Unlined sheer pieces as standalone — Thames wind is real on warm days
- A single heavy coat — three lighter layers handle the 10°C / 50°F swing better
- North Face-style technical shells — wrong silhouette in daily London contexts
- Trusting the morning forecast — four seasons in one day is a local half-joke
Frequently asked questions
Per Met Office climate data (Greenwich Park): average daily high is 18.6°C (65°F), low is 9.1°C (48°F). About 8 days with rain totalling 44mm, plus 199 hours of sunshine. Daily temperature swings of 10°C / 50°F are typical — pack for layering, not for one temperature.
About 8 rain days, mostly light drizzle rather than heavy showers. It rarely ruins a day, but it interrupts one. A compact umbrella and a water-resistant trench cover almost every scenario. Sunshine hours (199) are higher than you'd expect — more than Paris in some years.
Ankle boots with rubber soles as the primary pair (leather upper, resolable, reads local). A clean pair of sneakers or flats as the second. Skip anything with a leather sole (ruined by damp pavement) or suede upper (stained by one drizzle). Vans, Converse, Chelsea boots, and Dr Martens all read right in London May.
Most days will feel too cool. On rare warm afternoons above 20°C / 68°F, tailored shorts work in parks and casual neighborhoods (Shoreditch, Peckham), but most Londoners are still in trousers or midi skirts. Locals do not switch to summer clothing until June-July at earliest.
Structured cotton and wool, leather boots or loafers, a trench, a scarf, quiet accessories. Think tailored not technical, classic not trendy. A Burberry-style trench, a merino sweater, good jeans, ankle boots: that's 80% of May London style regardless of budget or brand.
Sources
- UK Met Office — 1991–2020 climate normals, Greenwich Park station
