Weather in London in July

Prime time. If you get to pick your dates, July is the one. Highs average 22.8 °C, lows 12.8 °C, and rain falls on 13 days — nothing in the month is working against you.

July ranks 3 of 12 in London. Only September scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 13 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest July day reached 34.3 °C and the coldest night fell to 7.7 °C, and the wettest single day dropped 34 mm — roughly 57% of the month's rain in one day.

July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 100 mm against 25 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 60 mm average is a reasonable planning figure, not a promise.

Wind is light at 10.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 76%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 20.5 °C in June, 22.8 here, 22.6 in August. Nothing about the timing within the month matters much.

Daylight in July

July is at or near the longest days of London's year: 16.2 hours of daylight, losing 1 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

An inland climate

Despite being inland, the year stays fairly even: 21.1 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in London versus nearby

If London is one option among several, the nearby comparison is worth making. Birmingham is close enough to be a coin toss — 2.2 °C cooler, 2 days more rain. Le Havre is close enough to be a coin toss — 2.5 °C cooler, 2 days less rain.

So: July is effectively as good as it gets here — 6 points behind September, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in London

See all twelve months in London, or where else to go in July.