What to Wear in London in July
London in July: 24°C / 75°F afternoons, 14°C / 57°F mornings, 7 rain days, 209 sunshine hours — warmest, driest, sunniest month.
- Linen wrap dresses or cotton midis as the workhorse piece
- A linen camp shirt — open over a tank on hot days, buttoned on cool ones
- Wide-leg cotton trousers for museum days and dinner bookings
- Tailored cotton shorts (not gym) for 28°C / 82°F+ heatwave afternoons
- Vans for big walking days — sandals can't do 7 miles to Greenwich
- A light cardigan for restaurant AC and 14°C / 57°F evenings
- Heavy denim on heat-wave days — the un-AC Tube is brutal
- Leave the umbrella behind — afternoon rain is sudden
- Plan long walks 2-4pm during heat waves — museums, department stores, cafés all beat it
July is London's warmest month. Met Office climate data put the high at 23.8°C / 75°F and the low at 13.9°C / 57°F, with just 7 rain days (least of any summer month) and 209 sunshine hours — the sunniest month of the year. Heat waves occasionally push July into the low 30s, which the city handles with the grace of someone who did not prepare: the Tube gets brutal (no AC in old carriages), parks fill with people sprawled on lawns, and pubs open their beer gardens wide. Build a capsule that works at 25°C / 77°F without falling apart at 14°C / 57°F in the evening, or on the two days that week when rain returns. This is London's most wearable month: dresses, linen, sandals, and the lightest jacket you can pack because you'll still use it. The local style guide: linen midi dresses, Vans or sandals, a thin cardigan for the 6pm cool-down, a good compact umbrella because 'rain is almost always in the forecast.'
London's most wearable month: dresses, linen, sandals, and the lightest jacket you can pack because you'll still use it.
The capsule
01Rust linen wrap midi dressJuly's workhorse for Regent's Park, Tate Modern, and a Marylebone dinner.
02Short-sleeve white linen camp shirtWear it open on heat-wave days or buttoned when the evening cools.
03Wide-leg cotton trousersBreathable polish for museum days, dinner bookings, and any day you want more structure than a dress.
04Tailored cotton shortsFor the 28°C / 82°F+ days London gets two or three times in July. Tailored, mid-thigh, in a neutral. Not gym shorts. Most Londoners in their 20s-30s wear them on heatwave days.
05Cream linen blazerA light, useful layer for restaurant AC and 14°C / 57°F evenings.
06Black low-top canvas sneakersSupportive soles for seven-mile walking days and the Tube.
07Tan supportive leather sandalsA polished flat for dinners and warm park afternoons.
08Woven straw market toteA roomy Portobello Saturday and picnic bag.
09Tan structured leather crossbodyA hands-free evening choice for summer Tube crowds.
10Wide-frame black sunglassesHigh-coverage lenses for London's sunniest month and long evening light.
11Black compact umbrellaA small rain layer that belongs in the bag even on a clear morning.
Day to night
Camp shirt · cotton shorts · Vans · straw tote. Portobello Market in the morning, flat white at a Notting Hill café.
Wrap dress · flat sandals · linen blazer in bag · crossbody. Dinner at Rochelle Canteen, walk through the long evening light.
What to avoid
- Heavy denim on the hottest days — the un-AC Tube is the warmest you'll be in London
- Leaving the umbrella behind on clear mornings — July rain arrives unannounced
- Anything you'd call a winter coat — a blazer and scarf handle the coolest July day
- Bright athleisure for day outfits — a clean tee with linen shorts reads more local
- Long outdoor walks 2-4pm during heat waves — museums, department stores, cafés all beat it
Frequently asked questions
Per Met Office climate data: average high 23.8°C (75°F), low 13.9°C (57°F). About 7 rain days, just 36mm total rainfall — the driest summer month. Sunshine: 209 hours, the sunniest of the year. Heat waves push some days above 28°C / 82°F, occasionally into the low 30s.
Average highs around 24°C / 75°F, but heat waves can push into the low 30s. Most buildings, and the older Tube lines, have limited air conditioning — prepare for indoor warmth as well as outdoor. Modern hotels are usually AC'd; older B&Bs often are not.
It's the warmest and driest. Long daylight hours (16 hours), outdoor events (Proms, summer festivals, Wimbledon wrap-up), and pub gardens in full use. The trade-off: higher prices and tourist crowds at major attractions.
Smart casual: a nice dress, blouse with trousers, or a clean shirt and good shoes. The West End does not enforce a dress code but locals dress up slightly for an evening show. Theaters are air-conditioned — bring the layer you've been carrying all day.
Yes. July still averages 7 rain days. Shorter than winter rain but sometimes sudden and heavy. A compact umbrella in the bag is non-negotiable — every local carries one, even in a heat wave.
Sources
- UK Met Office — 1991–2020 climate normals, Greenwich Park station
