Your August weather guide
HotWeather in Costa Brava in August
August is a good choice for Costa Brava if you want hot days and a sea warm enough for relaxed swimming. Daytime highs average around 29°C, nights stay near 20°C, and the sea is around 25°C. The catch is that this is the region's warmest month: midday activity can feel tiring, and evenings offer only limited relief. Go for a swimming holiday with a flexible pace, rather than expecting comfortable weather for constant walking.
Long-term climate averages for Lloret de Mar, not a forecast · 1991-2020
Costa Brava, month by month
Your snapshot
At a glance
The useful details for Lloret de Mar.
- Average daytime high
- 28.7°C
- 9 in 10 days stay below 32°C
- Average night-time low
- 20.0°C
- coldest 10% of nights: 18°C or lower
- Compared with London
- +7.3°C
- London averages 21.4°C in August
- Sea temperature
- 24.8°C
- year to year: 24°C to 26°C
- Sunshine per day (est.)
- 8.3h
- 61% of 13.7 h of daylight
- Rainy days (1 mm+)
- 8
- 51 mm over the month
- Humidity
- 70%
- Days over 25°C
- 89%
- 34% over 30°C
- Record high 1991-2020
- 38.5°C
- 2003-08-12
- Record low 1991-2020
- 11.8°C
- 2002-08-11
- Flight from London
- ≈ 2 h 6 min
- 1076 km, short-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How August compares
August is the 1st warmest month of the year in Costa Brava. Within Spain it is 45th of 87 (Spain in August). Against London's average high of 21.4°C in August, Costa Brava is 7.3°C warmer by day and 6.5°C warmer at night.
Daytime and night-time in August
The typical August day in Costa Brava peaks at 28.7°C, but that is an average: the warmest 10% of days reach 32.3°C or more. About 89% of days top 25°C and 1 in 3 pass 30°C. Nights average 20.0°C; one night in ten drops to 17.5°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 38.5°C (2003-08-12) and the coldest night 11.8°C (2002-08-11).
Rain in August
Some rain (4-8 rainy days): about 8 days with 1 mm or more, 51 mm in total. Year to year it varies a lot - the wettest August was 2007 with 150 mm, the driest 2011 with 7 mm. Humidity averages 70%.
Sea temperature in August
The sea averages 24.8°C - warm enough to swim (22°c+). Depending on the year it ranges from 24.1°C to 25.6°C. This is the warmest the sea gets here all year.
Sunshine and daylight
Around 8.3 hours of sunshine a day (estimated from cloud cover), 13.7 hours of daylight: the sun rises about 06:57 and sets about 20:49 local time in mid-August. Average cloud cover is 40%.
Is August a good time to visit Costa Brava?
Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Costa Brava on our scoring are July, June, August; months averaging 25°C or more: Jun, Jul, Aug.
Expect proper heat, not just warm afternoons
The average high does not tell the whole story: 34% of August days reach 30°C, so plan for hotter spells rather than packing only for the average. Humidity averages 70%, which can make the warmth feel more noticeable, particularly when you are active. Keep longer walks for the morning, take shade during the hottest part of the day, and favour loose, breathable clothing. With average night lows of 20°C, cooling in your accommodation is worth prioritising if warm bedrooms affect your sleep. A light layer is still sensible for cooler evenings, but heavy clothing is unlikely to earn much space in your bag.
Plenty of sunshine, with room for rain
August brings about 8.3 hours of sunshine within 13.7 hours of daylight, giving you plenty of scope to shift outdoor plans away from midday. That does not mean uninterrupted blue skies: about 8 days have measurable rain, so a completely dry holiday is not something to count on. Keep plans flexible and pack a light waterproof rather than assuming every day will suit the same routine. The rainfall figures do not tell you how long individual showers last, so avoid treating a rainy day as automatically lost. Sun protection still belongs in your daily bag, while checking the forecast can help you choose when to spend longer outside.
A little perspective
Costa Brava through the year
August is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 12.5°C | 4.5°C | 13.4°C | 4.7 | 51 | 7 | 0% |
| February | 13.3°C | 4.8°C | 12.8°C | 5.2 | 45 | 7 | 0% |
| March | 15.9°C | 7.0°C | 13.0°C | 5.7 | 57 | 8 | 0% |
| April | 18.0°C | 9.2°C | 14.0°C | 6.2 | 73 | 10 | 1% |
| May | 21.6°C | 12.7°C | 16.6°C | 6.8 | 64 | 10 | 13% |
| Junebest | 25.8°C | 16.7°C | 20.3°C | 8.5 | 47 | 7 | 59% |
| Julybest | 28.5°C | 19.6°C | 23.4°C | 9.7 | 38 | 6 | 87% |
| AugustSelectedbest | 28.7°C | 20.0°C | 24.8°C | 8.3 | 51 | 8 | 89% |
| September | 24.7°C | 16.9°C | 23.3°C | 6.0 | 85 | 11 | 48% |
| October | 20.7°C | 13.6°C | 20.1°C | 4.6 | 99 | 10 | 7% |
| November | 16.0°C | 8.8°C | 17.0°C | 4.5 | 69 | 8 | 0% |
| December | 13.1°C | 5.5°C | 14.7°C | 4.4 | 51 | 7 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in August
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
France · 28°C by day · sea 25°C
Nice
Italy · 28°C by day · sea 26°C
Lido di Jesolo
Tanzania · 28°C by day · sea 26°C
Zanzibar
Italy · 29°C by day
Verona
Italy · 27°C by day · sea 26°C
Venice
A little more detail
Costa Brava in August FAQs
Plain answers, grounded in the averages.
Is Costa Brava hot in August?
Costa Brava is hot in August: the average daytime high is 28.7°C and nights average 20.0°C. About 89% of August days reach 25°C or more.
Can you swim in the sea in Costa Brava in August?
The sea around Costa Brava averages 24.8°C in August, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 24°C to 26°C depending on the year.
How much does it rain in Costa Brava in August?
Costa Brava sees about 8 rainy days (1 mm or more) and 51 mm of rain in a typical August. The wettest August between 1991 and 2020 was 2007 (150 mm) and the driest was 2011 (7 mm).
How sunny is Costa Brava in August?
Costa Brava gets around 8.3 hours of sunshine a day in August out of 13.7 hours of daylight (estimated from average cloud cover).
How does Costa Brava compare with the UK in August?
Costa Brava is on average 7.3°C warmer than London by day in August (28.7°C against 21.4°C).
What is the hottest August on record in Costa Brava?
Between 1991 and 2020 the hottest August day in Costa Brava reached 38.5°C on 2003-08-12, and the coldest night dropped to 11.8°C on 2002-08-11.
Is the sea warm enough for swimming in August?
Yes. The sea averages 24.8°C, with a year-to-year range of 24°C to 26°C. That makes August a good fit if swimming is central to your holiday and you prefer water that feels warm rather than bracing.
How much hotter is Costa Brava than London in August?
Costa Brava's average daytime high is 28.7°C, compared with London's 21.4°C - a difference of 7.3°C. That is a noticeable step up from a typical London August, so plan for shade and a slower pace during the hottest hours.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Lloret de Mar. Sea temperature from the nearest 5 km sea cell, 3 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C