Mersin climate
Mersin (Turkey) has a hot-summer Mediterranean climate (Köppen Csa). The average temperature over the year is 21 °C69 °F, and about 514 mm20 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Mersin climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1356 | 542 | 949 | 903.6 |
| Feb | 1558 | 744 | 1151 | 652.6 |
| Mar | 1966 | 1049 | 1458 | 502.0 |
| Apr | 2474 | 1355 | 1865 | 341.3 |
| May | 2984 | 1763 | 2374 | 361.4 |
| Jun | 3595 | 2271 | 2883 | 160.6 |
| Jul | 40103 | 2577 | 3290 | 30.1 |
| Aug | 40103 | 2678 | 3391 | 30.1 |
| Sep | 3595 | 2272 | 2883 | 150.6 |
| Oct | 2883 | 1763 | 2373 | 311.2 |
| Nov | 2170 | 1253 | 1661 | 632.5 |
| Dec | 1560 | 846 | 1253 | 1074.2 |
| Year | 40103 | 542 | 2169 | 51420 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 80% | 66% | 2.3 | 9:54 |
| Feb | 79% | 62% | 3.2 | 10:47 |
| Mar | 73% | 54% | 4.6 | 11:51 |
| Apr | 68% | 48% | 5.8 | 13:06 |
| May | 63% | 39% | 6.9 | 14:07 |
| Jun | 52% | 24% | 7.8 | 14:40 |
| Jul | 41% | 19% | 7.7 | 14:27 |
| Aug | 40% | 18% | 6.9 | 13:33 |
| Sep | 46% | 22% | 5.7 | 12:22 |
| Oct | 55% | 39% | 4.1 | 11:10 |
| Nov | 65% | 50% | 2.9 | 10:09 |
| Dec | 74% | 62% | 2.2 | 9:39 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Mersin is like
The warmest month is August, with an average high of 40 °C103 °F and a low of 26 °C78 °F. The coldest is January, when highs average 13 °C56 °F and lows 5 °C42 °F. Seasons are strongly marked: the warmest month is on average 23.3 °C42 °F warmer than the coldest.
Annual precipitation is moderate at about 514 mm20 in. The wettest three-month stretch is December–February, which brings 51% of the annual total. Months with less than 20 mm0.8 in on average: June–September. The wettest month is December (107 mm4.2 in), the driest is August (3 mm0.1 in).
Relative humidity ranges from 40% in August to 80% in January. The clearest skies (lowest average cloud amount, 18%) are typical of August. Average wind speed near the ground ranges from 7 km/h (5 mph) in October to 10 km/h (6 mph) in January. Daylight lasts from about 9.6 hours in December to 14.7 hours in June.
Best time to visit Mersin
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March–May and October and November: average highs of 19 °C66 °F to 29 °C84 °F with 31 mm1.2 in to 63 mm2.5 in of precipitation per month.
The most challenging month is August, which is hot, with average highs of 40 °C103 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Mersin
- Winter (December–February) — highs 1356 to 15 °C60 °F, lows 542 to 8 °C46 °F, about 88 mm3.4 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Spring (March–May) — highs 1966 to 29 °C84 °F, lows 1049 to 17 °C63 °F, about 40 mm1.6 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3595 to 40 °C103 °F, lows 2271 to 26 °C78 °F, about 7 mm0.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2170 to 35 °C95 °F, lows 1253 to 22 °C72 °F, about 36 mm1.4 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Mersin compares
Compared with Adana, about 64 km to the east, Mersin is on average 1 °C1.8 °F warmer and receives 19% less precipitation (514 mm20 in vs 636 mm25 in). The difference is largest in August (2 °C3.6 °F warmer).
Of the 87 places in Turkey covered by World Climates, Mersin is the 3rd warmest by annual mean temperature and the 53rd wettest by annual precipitation. See all of them on the Turkey climate page.
Places in other countries with the most similar temperature and rainfall pattern: Relizane (Algeria, Csa), Beni Mellal (Morocco, Csa) and Chlef (Algeria, Csa).
Nearby places
- Tarsus 25 km · 21 °C69 °F · 574 mm23 in
- Adana 64 km · 20 °C67 °F · 636 mm25 in
- Silifke 79 km · 20 °C69 °F · 640 mm25 in
- Ereğli 94 km · 13 °C56 °F · 413 mm16 in
- Arsuz 120 km · 21 °C70 °F · 675 mm27 in
- Karaman 133 km · 13 °C56 °F · 614 mm24 in
- İskenderun 139 km · 20 °C68 °F · 614 mm24 in
- Samandağ 145 km · 20 °C67 °F · 626 mm25 in
Frequently asked questions
What is the warmest month in Mersin?
August is the warmest month in Mersin, with an average high of 40 °C (103 °F) and an average low of 26 °C (78 °F).
What is the coldest month in Mersin?
January is the coldest month, with an average high of 13 °C (56 °F) and an average low of 5 °C (42 °F).
When does it rain the most in Mersin?
December is the wettest month with about 107 mm (4.2 in) of precipitation; August is the driest with about 3 mm (0.1 in).
What is the best time to visit Mersin?
Judging by long-term averages, the most comfortable months are March–May and October and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 1,332 m, while Mersin lies at about 10 m. Temperatures on this page were therefore adjusted by +8.6 °C15.5 °F using the standard lapse rate of 6.5 °C per 1,000 m.