Weather in Barcelona in July

How July compares

July is the 2nd warmest month of the year in Barcelona and ranks 93rd of 134 destinations we compare for July - see where else is hot in July. Within Spain it is 61st of 87 (Spain in July). Against London's average high of 21.8°C in July, Barcelona is 5.4°C warmer by day and 6.7°C warmer at night.

Daytime and night-time in July

The typical July day in Barcelona peaks at 27.2°C, but that is an average: the warmest 10% of days reach 30.0°C or more. About 83% of days top 25°C and 1 in 10 pass 30°C. Nights average 20.2°C; one night in ten drops to 17.8°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest July day here reached 34.9°C (2009-07-23) and the coldest night 13.9°C (1997-07-01).

Rain in July

Some rain (4-8 rainy days): about 5 days with 1 mm or more, 23 mm in total. Year to year it varies a lot - the wettest July was 1992 with 68 mm, the driest 1991 with 2 mm. Humidity averages 74%.

Sea temperature in July

The sea averages 24.0°C - warm enough to swim (22°c+). Depending on the year it ranges from 22.7°C to 25.2°C. For the warmest sea here, come in August (25.5°C).

Sunshine and daylight

Around 10.0 hours of sunshine a day (estimated from cloud cover), 14.7 hours of daylight: the sun rises about 06:31 and sets about 21:24 local time in mid-July. Average cloud cover is 32%.

Is July a good time to visit Barcelona?

Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Barcelona on our scoring are July, June, August; months averaging 25°C or more: Jul, Aug.

Expect heat that lasts into the evening

July suits travellers who enjoy hot weather: 83% of days reach 25°C, so warmth is the norm rather than a lucky break. More intense heat is less routine, with 10% of days reaching 30°C, but it is sensible to leave room for shaded breaks. Humidity averages 74%, which can add to the sticky feel when you are walking around. Plan more active time for the morning, and keep midday flexible. Pack light, breathable clothes, sun protection and comfortable footwear. Average night lows of 20°C mean evenings are usually warm rather than crisp; a light layer is more useful than a heavy jacket. Accommodation with cooling is a sensible priority if warm nights affect your sleep.

Good swimming weather, but keep a rain fallback

The sea is a strong reason to choose July. At an average of 24°C, it is warm enough for swimming rather than just a quick dip, and the year-to-year range of 23°C to 25°C keeps it comfortably within swimming territory. Long daylight hours give you flexibility to fit water time around the hottest part of the day, though sun protection still matters outside midday. Rain is a possible interruption, not a reason to rule the month out: there are about 5 rainy days. Keep an indoor option in mind and bring a compact umbrella, but make lightweight summer clothing the main part of your packing. July works best if you can adjust your plans to the day's heat or rain.