Your August weather guide
HotWeather in Dubrovnik in August
August is a good time for Dubrovnik if you want hot days and a warm sea, but less suitable if you prefer cool weather for exploring. Daytime highs average 29°C, nights stay around 21°C, and the sea averages 26°C. It is Dubrovnik's warmest month, so plan around the heat rather than expecting to stay active all day. Rain is possible, though sunshine leaves plenty of scope for time outdoors.
Long-term climate averages for Dubrovnik, not a forecast · 1991-2020
Dubrovnik, month by month
Your snapshot
At a glance
The useful details for Dubrovnik.
- Average daytime high
- 28.8°C
- 9 in 10 days stay below 32°C
- Average night-time low
- 21.4°C
- coldest 10% of nights: 19°C or lower
- Compared with London
- +7.4°C
- London averages 21.4°C in August
- Sea temperature
- 25.6°C
- year to year: 25°C to 27°C
- Sunshine per day (est.)
- 10.8h
- 79% of 13.7 h of daylight
- Rainy days (1 mm+)
- 5
- 50 mm over the month
- Humidity
- 68%
- Days over 25°C
- 93%
- 33% over 30°C
- Record high 1991-2020
- 36.1°C
- 2012-08-07
- Record low 1991-2020
- 14.6°C
- 2006-08-31
- Flight from London
- ≈ 2 h 48 min
- 1674 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 Dubrovnik and ranks 68th of 134 destinations we compare for August - see where else is hot in August. Within Croatia it is 2nd of 4 (Croatia in August). Against London's average high of 21.4°C in August, Dubrovnik is 7.4°C warmer by day and 7.9°C warmer at night.
Daytime and night-time in August
The typical August day in Dubrovnik peaks at 28.8°C, but that is an average: the warmest 10% of days reach 31.9°C or more. About 93% of days top 25°C and 1 in 3 pass 30°C. Nights average 21.4°C; one night in ten drops to 19.0°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 36.1°C (2012-08-07) and the coldest night 14.6°C (2006-08-31).
Rain in August
Some rain (4-8 rainy days): about 5 days with 1 mm or more, 50 mm in total. Year to year it varies a lot - the wettest August was 1995 with 217 mm, the driest 2012 with 1 mm. Humidity averages 68%.
Sea temperature in August
The sea averages 25.6°C - warm enough to swim (22°c+). Depending on the year it ranges from 24.5°C to 26.7°C. This is the warmest the sea gets here all year.
Sunshine and daylight
Around 10.8 hours of sunshine a day (estimated from cloud cover), 13.7 hours of daylight: the sun rises about 05:54 and sets about 19:50 local time in mid-August. Average cloud cover is 21%.
Is August a good time to visit Dubrovnik?
Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Dubrovnik on our scoring are August, July, June; months averaging 25°C or more: Jun, Jul, Aug.
Expect proper heat, not just warm afternoons
Dubrovnik in August suits travellers who enjoy heat and can keep their plans flexible around midday. Days reach 30°C on 33% of occasions, so the average high does not tell the whole story: hotter afternoons are a realistic prospect. Humidity averages 68%, another reason to favour loose, breathable clothing over anything heavy. Put more active plans in the morning, leave room for shade and rest around midday, and carry water when heading out. Evenings are warm rather than reliably refreshing, with average night lows of 21.4°C. If you struggle to sleep in warm conditions, prioritise accommodation with air conditioning rather than assuming an open window will be enough.
Good swimming weather, with some room for rain
The sea is a strong reason to choose August: at an average 25.6°C, it is warm enough for swimming rather than just a quick dip. The year-to-year range of 24°C to 27°C also points to consistently comfortable water, though personal preferences differ. Sunshine averages about 10.8 hours a day, giving you flexibility to enjoy the water outside the hottest part of the afternoon. The catch is that August is not rain-free, with about 5 rainy days during the month. Keep outdoor plans movable and pack a light waterproof, but do not treat rain as the defining feature of the trip. Sun protection and light clothing deserve more space in your daily kit.
A little perspective
Dubrovnik 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 | 10.7°C | 4.9°C | 14.3°C | 4.2 | 152 | 11 | 0% |
| February | 11.5°C | 5.1°C | 13.8°C | 4.9 | 146 | 11 | 0% |
| March | 14.0°C | 7.3°C | 13.9°C | 5.6 | 135 | 11 | 0% |
| April | 17.1°C | 10.4°C | 15.1°C | 6.3 | 133 | 12 | 1% |
| May | 21.5°C | 14.6°C | 18.6°C | 7.5 | 89 | 10 | 13% |
| Junebest | 25.6°C | 18.6°C | 22.4°C | 10.0 | 60 | 7 | 59% |
| Julybest | 28.4°C | 21.0°C | 24.7°C | 11.8 | 40 | 6 | 91% |
| AugustSelectedbest | 28.8°C | 21.4°C | 25.6°C | 10.8 | 50 | 5 | 93% |
| September | 24.3°C | 17.7°C | 23.6°C | 7.7 | 138 | 9 | 42% |
| October | 20.1°C | 14.0°C | 21.0°C | 5.7 | 198 | 11 | 2% |
| November | 15.8°C | 10.2°C | 18.5°C | 4.1 | 240 | 14 | 0% |
| December | 11.8°C | 6.3°C | 16.0°C | 4.1 | 201 | 13 | 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.
A little more detail
Dubrovnik in August FAQs
Plain answers, grounded in the averages.
Is Dubrovnik hot in August?
Dubrovnik is hot in August: the average daytime high is 28.8°C and nights average 21.4°C. About 93% of August days reach 25°C or more.
Can you swim in the sea in Dubrovnik in August?
The sea around Dubrovnik averages 25.6°C in August, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 25°C to 27°C depending on the year.
How much does it rain in Dubrovnik in August?
Dubrovnik sees about 5 rainy days (1 mm or more) and 50 mm of rain in a typical August. The wettest August between 1991 and 2020 was 1995 (217 mm) and the driest was 2012 (1 mm).
How sunny is Dubrovnik in August?
Dubrovnik gets around 10.8 hours of sunshine a day in August out of 13.7 hours of daylight (estimated from average cloud cover).
How does Dubrovnik compare with the UK in August?
Dubrovnik is on average 7.4°C warmer than London by day in August (28.8°C against 21.4°C).
What is the hottest August on record in Dubrovnik?
Between 1991 and 2020 the hottest August day in Dubrovnik reached 36.1°C on 2012-08-07, and the coldest night dropped to 14.6°C on 2006-08-31.
How much hotter is Dubrovnik than London in August?
Dubrovnik's average daytime high is 28.8°C, compared with 21.4°C in London, a difference of 7.4°C. That is a noticeable step up from a typical London August, so allow for a slower pace outdoors rather than planning around familiar UK summer conditions.
Will I need warm clothes in the evening?
Light clothes should suit most evenings, as night lows average 21.4°C. The coldest 10% of nights reach 19°C or lower, so a light layer is sensible if you tend to feel chilly. Heavy clothing is unlikely to be your priority.
Is August a good choice if I dislike heat?
August is not the best fit if avoiding heat is your main concern: it is Dubrovnik's warmest month. Days reach 25°C on 93% of occasions, so even without an especially hot spell, you should expect consistently warm conditions.
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 Dubrovnik. Sea temperature from the nearest 5 km sea cell, 2.2 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