Weather in Lyon in July

A good month. July is a solid month to be in Lyon. Highs average 28.1 °C, lows 16.2 °C, and rain falls on 10 days — nothing in the month is working against you.

July ranks 5 of 12 in Lyon: past the worst of the year but short of September, which is the month to book if the dates are open.

Rain on 10 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 28.1 °C days and 16.2 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 11 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest July day reached 37.8 °C and the coldest night fell to 9.3 °C, and the wettest single day dropped 40 mm — roughly 62% of the month's rain in one day.

July is moderately variable: 14 mm in the driest year against 167 mm in the wettest, around an average of 65 mm. Roughly two Julys in three land near that average, and the third does something else entirely.

Wind is light at 7.5 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 66%.

How July sits in the year

Temperatures hold steady either side: 25.6 °C in June, 28.1 here, 27.9 in August. Nothing about the timing within the month matters much.

Daylight in July

July is at or near the longest days of Lyon's year: 15.4 hours of daylight, losing 0.8 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

An inland climate

With no coast nearby, the year swings a fair way — 27.8 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

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 Lyon versus nearby

If Lyon is one option among several, the nearby comparison is worth making. Annecy is close enough to be a coin toss — 2.1 °C cooler, 4 days more rain. Chamonix-Mont-Blanc is close enough to be a coin toss — 5.9 °C cooler, 6 days more rain.

So: July works, with September the better month by 8 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Lyon

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