Dalaman · Month-by-month climate guide
Dalaman Weather in September
You are in this month now — for current conditions and the 7-day forecast see the live weather page.
How It Compares with the Rest of the Year
Bars show the daytime high. Click a month to open its page.
What a typical day looks like
The first half is still summer; in the second half nights cool and humidity drops. The afternoon breeze is reliable and evenings sit around 20 °C, which is very comfortable. The 2 rainy days usually come at the very end of the month.
Can you swim in the sea in September?
At 27 °C the sea feels like high summer, on beaches that are quieter than in August. Many locals rate September the best swimming month of the year.
What to pack
Summer clothes plus one light layer for evenings. Sunscreen is still essential (UV index 8); walking shoes come in useful in the second half.
What to do in the region in September
Boat trips continue at full capacity while the crowds thin and prices fall. The Lycian Way becomes walkable again after mid-month, and paragliders start arriving for the Ölüdeniz Air Games in early October. Every business is open.
Flights to Dalaman in September
The summer timetable runs in full and September is Dalaman’s fourth-busiest month. With UK schools back, the terminal is noticeably calmer than in August.
Who is it for?
Warm sea, softer air, fewer people: the most balanced month for a summer holiday, especially for couples without children and older travellers.
Dalaman Climate Table — All 12 Months
| Month | Day / night | Sea | Rain | Rainy days | Sun/day | UV |
|---|---|---|---|---|---|---|
| January | 15 / 6 °C | 17 °C | 190 mm | 12 | 4.5 h | 3 |
| February | 16 / 6 °C | 16 °C | 145 mm | 10 | 5.5 h | 4 |
| March | 19 / 8 °C | 17 °C | 95 mm | 8 | 6.5 h | 6 |
| April | 23 / 11 °C | 18 °C | 60 mm | 6 | 8 h | 8 |
| May | 28 / 15 °C | 21 °C | 35 mm | 4 | 10 h | 9 |
| June | 33 / 19 °C | 25 °C | 10 mm | 2 | 12 h | 10 |
| July | 36 / 22 °C | 27 °C | 3 mm | 1 | 12.5 h | 11 |
| August | 36 / 22 °C | 28 °C | 4 mm | 1 | 12 h | 10 |
| September | 32 / 18 °C | 27 °C | 15 mm | 2 | 10 h | 8 |
| October | 27 / 14 °C | 24 °C | 70 mm | 5 | 7.5 h | 6 |
| November | 21 / 10 °C | 21 °C | 135 mm | 8 | 5.5 h | 4 |
| December | 16 / 7 °C | 19 °C | 210 mm | 12 | 4 h | 3 |
Source: Turkish State Meteorological Service long-term averages and coastal sea-temperature observations (approximate normals). For information only.
Dalaman Weather in September — Questions
How hot is Dalaman in September?
The average daytime high is 32 °C and the night-time low 18 °C. These are long-term averages; individual days can be a few degrees either side.
Is the sea warm enough to swim in Dalaman in September?
At 27 °C the sea feels like high summer, on beaches that are quieter than in August. Many locals rate September the best swimming month of the year.
Does it rain in Dalaman in September?
The month averages 15 mm of rain over 2 rainy days. Rain usually comes as short showers.
Are there flights to Dalaman in September?
The summer timetable runs in full and September is Dalaman’s fourth-busiest month. With UK schools back, the terminal is noticeably calmer than in August.
Is September a good time to visit Dalaman?
Warm sea, softer air, fewer people: the most balanced month for a summer holiday, especially for couples without children and older travellers.