Weather in London in June

Prime time. If you get to pick your dates, June is the one. Highs average 20.5 °C, lows 10.6 °C, and rain falls on 11 days — nothing in the month is working against you.

June ranks 2 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 11 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

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average June reaches 30 °C. Across the twenty years measured, the hottest June day reached 29.3 °C and the coldest night fell to 4 °C, and the wettest single day dropped 49 mm — roughly 88% of the month's rain in one day.

June is moderately variable: 6 mm in the driest year against 123 mm in the wettest, around an average of 56 mm. Roughly two Junes in three land near that average, and the third does something else entirely.

Wind is light at 10.7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, high enough to notice on the warm days without dominating them.

How June sits in the year

The month is on the way up: 3.2 °C warmer than May, and July adds another 2.3 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in June

June is at or near the longest days of London's year: 16.6 hours of daylight, holding steady all 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.

June 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 — within a degree on temperature, 2 days more rain. Le Havre is close enough to be a coin toss — 2.2 °C cooler, the same number of rain days.

So: June is effectively as good as it gets here — 3 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 June.