Weather in Barcelona in July

A good month. July works. It is not the peak, but nothing about it fights you. Highs average 32 °C, lows 21.7 °C, and rain falls on 5 days — nothing in the month is working against you.

July ranks 11 of 12 — near the bottom of Barcelona's year. April is the month that works, and the swing between the two is 19 points, which is a different holiday rather than a slightly better one. Worth keeping in perspective: July is the weakest month of Barcelona's year and it is still a perfectly good one. The downside here is small.

Rain falls on only 5 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 32 °C days and 21.7 °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: 25 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest July day reached 38.4 °C and the coldest night fell to 14 °C.

July is moderately variable: 8 mm in the driest year against 66 mm in the wettest, around an average of 28 mm. Roughly two Julys in three land near that average, and the third does something else entirely.

Wind is light at 8.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 62%.

How July sits in the year

Temperatures hold steady either side: 29.4 °C in June, 32 here, 31.8 in August. Nothing about the timing within the month matters much.

Daylight in July

July is at or near the longest days of Barcelona's year: 14.9 hours of daylight, losing 0.7 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 24.5 °C in July — warm enough to stay in as long as you like. This is the warmest the water gets all year.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

July in Barcelona versus nearby

If Barcelona is one option among several, the nearby comparison is worth making. Palma is a better bet in July — 4.2 °C cooler, 3 days less rain. Toulouse is close enough to be a coin toss — 2.1 °C cooler, 4 days more rain.

So: July works, with April the better month by 18 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Barcelona

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