Warm Sea Without Extreme Heat: 8 Beach Destinations With Comfortable Weather
Love warm seawater but not extreme heat? Compare eight beach destinations where the sea stays warm while daytime temperatures remain comfortable.
Barcelona in September sees high temperatures, with highs around 25°C (77°F) and overnight lows of 19°C (66°F). Rainfall is fairly high at around 89 mm (3.5 in) on average, so pack waterproofs just in case.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Barcelona.
Pick a month to see the average temperature, rainfall and sunshine in Barcelona - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Barcelona typically stay consistent throughout September, with daily highs averaging around 25°C (77°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 19°C (66°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Barcelona spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
According to our 28 years of weather records for Barcelona, the following extremes were recorded between 1998 and 2026.
Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 22°C (72°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Barcelona climate overview or explore weather in Spain.
Where to go in September - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
Warm Sea Without Extreme Heat: 8 Beach Destinations With Comfortable Weather
Love warm seawater but not extreme heat? Compare eight beach destinations where the sea stays warm while daytime temperatures remain comfortable.
El Hierro: The smallest Canary island without mass tourism
Mainly nature lovers and those seeking tranquility go to El Hierro. The island is know for its beautiful mountains and you can wonder around for days here.
Spain in October: Where Is It Warmest and Sunniest?
Discover where Spain is warmest in October, with climate comparisons for Seville, Alicante, Málaga, Tenerife, Madrid and Barcelona.
Visit national Park El Teide
This national park is truly a unique place that you should not miss. You will find landscapes that seem to come from another plane and you will feel tiny in these impressive surroundings.