Your August weather guide
HotWeather in Dalaman in August
Dalaman in August suits you if you want hot, dry weather and warm sea swimming, but it is less comfortable for an active holiday. Average daytime highs reach 33°C, nights only fall to around 24°C, and the sea averages 28°C. This is Dalaman's warmest month, so the main decision is how well you cope with sustained heat. Go for a relaxed pace, with shade built into your day rather than long spells outside at midday.
Long-term climate averages for Dalaman, not a forecast · 1991-2020
Dalaman, month by month
Your snapshot
At a glance
The useful details for Dalaman.
- Average daytime high
- 33.3°C
- 9 in 10 days stay below 36°C
- Average night-time low
- 23.6°C
- coldest 10% of nights: 22°C or lower
- Compared with London
- +11.9°C
- London averages 21.4°C in August
- Sea temperature
- 27.5°C
- year to year: 27°C to 28°C
- Sunshine per day (est.)
- 12.8h
- 96% of 13.4 h of daylight
- Rainy days (1 mm+)
- 1
- 5 mm over the month
- Humidity
- 57%
- Days over 25°C
- 100%
- 94% over 30°C
- Record high 1991-2020
- 40.6°C
- 1998-08-04
- Record low 1991-2020
- 19.1°C
- 1997-08-28
- Flight from London
- ≈ 4 h 12 min
- 2789 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 Dalaman. Within Turkey it is 6th of 18 (Turkey in August). Against London's average high of 21.4°C in August, Dalaman is 11.9°C warmer by day and 10.1°C warmer at night.
Daytime and night-time in August
The typical August day in Dalaman peaks at 33.3°C, but that is an average: the warmest 10% of days reach 36.1°C or more. About 100% of days top 25°C and almost every pass 30°C. Nights average 23.6°C; one night in ten drops to 21.7°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 40.6°C (1998-08-04) and the coldest night 19.1°C (1997-08-28).
Rain in August
Dry (3 rainy days or fewer): about 1 days with 1 mm or more, 5 mm in total. Year to year it varies a lot - the wettest August was 2017 with 28 mm, the driest 1998 with 0 mm. Humidity averages 57%.
Sea temperature in August
The sea averages 27.5°C - warm enough to swim (22°c+). Depending on the year it ranges from 26.7°C to 28.1°C. This is the warmest the sea gets here all year.
Sunshine and daylight
Around 12.8 hours of sunshine a day (estimated from cloud cover), 13.4 hours of daylight: the sun rises about 06:22 and sets about 19:57 local time in mid-August. Average cloud cover is 4%.
Is August a good time to visit Dalaman?
Yes - it is one of the better months: hot days, little rain and long sunny days. The best months for Dalaman on our scoring are September, June, October; months averaging 25°C or more: Jun, Jul, Aug, Sep, Oct.
Expect heat to shape your day
Hot weather is the norm rather than an occasional bonus: 94% of August days reach 30°C, and the hottest days can reach 36°C or more. That makes early starts and quieter afternoons a sensible routine, especially if you find heat tiring. Keep outdoor activity for the cooler parts of the day, carry water and choose light, loose clothing. Accommodation with air conditioning is a practical priority because the nights stay warm too. August is a good fit for travellers happy to slow down in the heat; it is harder to recommend if your ideal holiday involves being active outside throughout the day.
Warm swimming, little rain and long sunny days
The sea is firmly in comfortable swimming territory, so August works well if time in the water is your priority. Just do not expect a cold dip: with the water this warm, swimming may offer less relief from the heat than you hope. Rain is unlikely to shape your plans, with about 1 rainy day during the month, although a completely dry stay is not guaranteed. Around 12.8 hours of sunshine a day gives you plenty of scope to enjoy time outside without concentrating it around midday. Pack sunscreen, a hat and something light to cover exposed skin, and make shade part of the plan.
A little perspective
Dalaman 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 | 13.8°C | 6.8°C | 17.9°C | 5.0 | 168 | 11 | 0% |
| February | 14.5°C | 6.9°C | 16.9°C | 5.6 | 129 | 10 | 0% |
| March | 16.8°C | 8.2°C | 16.7°C | 6.7 | 90 | 9 | 0% |
| April | 19.9°C | 10.9°C | 17.4°C | 7.9 | 62 | 9 | 4% |
| May | 24.5°C | 15.2°C | 20.1°C | 9.9 | 39 | 7 | 42% |
| Junebest | 29.7°C | 19.8°C | 23.1°C | 12.8 | 13 | 3 | 95% |
| July | 33.2°C | 23.1°C | 25.9°C | 13.8 | 4 | 1 | 100% |
| AugustSelected | 33.3°C | 23.6°C | 27.5°C | 12.8 | 5 | 1 | 100% |
| Septemberbest | 29.9°C | 20.3°C | 26.5°C | 11.1 | 16 | 3 | 97% |
| Octoberbest | 25.0°C | 16.0°C | 24.3°C | 8.1 | 64 | 5 | 53% |
| November | 19.5°C | 11.5°C | 21.8°C | 6.1 | 109 | 6 | 3% |
| December | 15.2°C | 8.4°C | 19.5°C | 4.9 | 153 | 11 | 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
Dalaman in August FAQs
Plain answers, grounded in the averages.
Is Dalaman hot in August?
Dalaman is hot in August: the average daytime high is 33.3°C and nights average 23.6°C. About 100% of August days reach 25°C or more.
Can you swim in the sea in Dalaman in August?
The sea around Dalaman averages 27.5°C in August, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 27°C to 28°C depending on the year.
How much does it rain in Dalaman in August?
Dalaman sees about 1 rainy days (1 mm or more) and 5 mm of rain in a typical August. The wettest August between 1991 and 2020 was 2017 (28 mm) and the driest was 1998 (0 mm).
How sunny is Dalaman in August?
Dalaman gets around 12.8 hours of sunshine a day in August out of 13.4 hours of daylight (estimated from average cloud cover).
How does Dalaman compare with the UK in August?
Dalaman is on average 11.9°C warmer than London by day in August (33.3°C against 21.4°C).
What is the hottest August on record in Dalaman?
Between 1991 and 2020 the hottest August day in Dalaman reached 40.6°C on 1998-08-04, and the coldest night dropped to 19.1°C on 1997-08-28.
How much hotter is Dalaman than London in August?
Dalaman's average daytime high is 33.3°C, compared with 21.4°C in London, a difference of 11.9°C. Expect a substantial change from a typical London summer day, and allow yourself a gentler pace rather than planning to be constantly on the move.
Will I need a jacket in the evenings?
With average night lows of 23.6°C, outdoor evenings are generally warm enough for light clothing. Even the coolest nights tend to remain mild. A light layer may be useful for air-conditioned spaces, but warm evening clothing is not the main packing priority.
Should I choose August or another month?
Choose August if strong heat and warm sea swimming are the appeal. September, June and October are better overall choices for Dalaman. If sustained heat is a drawback rather than a benefit for you, those months are worth considering instead.
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 Dalaman. Sea temperature from the nearest 5 km sea cell, 10.4 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