Mersin climate
Mersin is warmest in August, with average highs of 31 °C, and coldest in January, when nights average 4.5 °C. December is the wettest month (129 mm) and July the driest (2.2 mm). Figures are 1991–2020 climate normals.
Across a full year Mersin averages 522 mm of rain, 152 days above 25 °C and 7 days below freezing.
Turkey · population 537,842 · 1991–2020 normals
Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month
- Warmest month August 31 °C
- Coldest month January 4.5 °C
- Driest month July 2 mm
- Wettest month December 129 mm
- Least cloud September 15 % cloud
- Hottest on record September 42 °C
- Coldest on record January -7.0 °C
- Warmest sea August 29 °C
What to expectMersin through the year
Mersin has a clear annual cycle: average daily highs run from 12 °C in January to 31 °C in August, a swing of 19 °C in mean temperature across the year.
Counted across a normal year, 152 days a year reach 25 °C, 67 of them reach 30 °C, 7 nights drop below freezing. The warmest reading in the 1991–2020 record is 42 °C, in September.
Rain is strongly seasonal. December averages 129 mm against 2 mm in July — 58 times as much. Planning around the dry months matters more here than planning around temperature.
The sea off Mersin is warmest in August at 29 °C and coldest in February at 17 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.
Month by month
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 12.5 °C | 101 mm | 52 % |
| February | 13.7 °C | 65 mm | 49 % |
| March | 16.8 °C | 51 mm | 43 % |
| April | 20.4 °C | 30 mm | 41 % |
| May | 24.4 °C | 23 mm | 33 % |
| June | 28.0 °C | 6 mm | 21 % |
| July | 30.7 °C | 2 mm | 17 % |
| August | 31.3 °C | 3 mm | 17 % |
| September | 29.2 °C | 11 mm | 15 % |
| October | 25.5 °C | 32 mm | 28 % |
| November | 19.4 °C | 70 mm | 38 % |
| December | 14.2 °C | 129 mm | 51 % |
Temperature month by month
| Month | Avg high | Avg low | Mean | Record high | Record low | Days above 25 °C | Days above 30 °C | Days below 0 °C |
|---|---|---|---|---|---|---|---|---|
| January | 12.5 °C | 4.5 °C | 8.3 °C | 19.8 °C | -7.0 °C | 0 | 0 | 3 |
| February | 13.7 °C | 4.9 °C | 9.2 °C | 24.8 °C | -6.7 °C | 0 | 0 | 3 |
| March | 16.8 °C | 7.2 °C | 12.2 °C | 27.6 °C | -1.1 °C | 0 | 0 | 0 |
| April | 20.4 °C | 10.7 °C | 15.9 °C | 31.7 °C | -0.2 °C | 3 | 0 | 0 |
| May | 24.4 °C | 15.0 °C | 20.2 °C | 35.7 °C | 7.9 °C | 12 | 2 | 0 |
| June | 28.0 °C | 19.0 °C | 24.0 °C | 38.1 °C | 11.5 °C | 26 | 6 | 0 |
| July | 30.7 °C | 22.4 °C | 26.8 °C | 39.9 °C | 17.2 °C | 31 | 20 | 0 |
| August | 31.3 °C | 23.2 °C | 27.4 °C | 37.7 °C | 17.5 °C | 31 | 25 | 0 |
| September | 29.2 °C | 20.0 °C | 24.8 °C | 42.2 °C | 10.2 °C | 28 | 12 | 0 |
| October | 25.5 °C | 15.8 °C | 20.6 °C | 35.9 °C | 6.5 °C | 18 | 3 | 0 |
| November | 19.4 °C | 10.4 °C | 14.6 °C | 28.7 °C | -0.8 °C | 2 | 0 | 0 |
| December | 14.2 °C | 6.5 °C | 10.1 °C | 25.3 °C | -2.0 °C | 0 | 0 | 1 |
Rain, sun and wind month by month
| Month | Rainfall | Wet days | Daylight | Cloud cover | Humidity | Wind | Sea temp |
|---|---|---|---|---|---|---|---|
| January | 101 mm | 10 | 9.9 h/day | 52 % | 70 % | 18 km/h | 18.1 °C |
| February | 65 mm | 8 | 11 h/day | 49 % | 70 % | 17 km/h | 17.0 °C |
| March | 51 mm | 7 | 12 h/day | 43 % | 71 % | 17 km/h | 17.1 °C |
| April | 30 mm | 6 | 13 h/day | 41 % | 72 % | 16 km/h | 18.3 °C |
| May | 23 mm | 4 | 14 h/day | 33 % | 73 % | 15 km/h | 21.4 °C |
| June | 6 mm | 1 | 15 h/day | 21 % | 74 % | 16 km/h | 25.1 °C |
| July | 2 mm | 0 | 14 h/day | 17 % | 75 % | 18 km/h | 27.8 °C |
| August | 3 mm | 1 | 14 h/day | 17 % | 72 % | 18 km/h | 28.8 °C |
| September | 11 mm | 2 | 12 h/day | 15 % | 65 % | 15 km/h | 28.2 °C |
| October | 32 mm | 4 | 11 h/day | 28 % | 60 % | 14 km/h | 26.0 °C |
| November | 70 mm | 5 | 10 h/day | 38 % | 63 % | 16 km/h | 22.6 °C |
| December | 129 mm | 9 | 9.7 h/day | 51 % | 69 % | 17 km/h | 20.0 °C |
How Mersin compares
The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.
| Destination | Summer high | Winter low | Rain per year | Days above 25 °C |
|---|---|---|---|---|
| Mersin | 31 °C | 4.5 °C | 522 mm | 152 |
| Tarsus · Turkey | 32 °C | 4.3 °C | 548 mm | 160 |
| Adana · Turkey | 35 °C | 4.0 °C | 691 mm | 175 |
| Karaman · Turkey | 31 °C | -3.1 °C | 322 mm | 122 |
| İskenderun · Turkey | 33 °C | 7.6 °C | 670 mm | 169 |
| Osmaniye · Turkey | 33 °C | 3.3 °C | 811 mm | 164 |
| Antakya · Turkey | 33 °C | 5.0 °C | 626 mm | 172 |
Where Mersin ranks
| Ranking | Position | Value |
|---|---|---|
| Best beach destinations in Asia in June | 1stof 50 | 100/100 |
| Best beach destinations in the world in June | 2ndof 50 | 100/100 |
| Best beach destinations in Asia in September | 7thof 50 | 95/100 |
| Best beach destinations in Asia in October | 10thof 50 | 96/100 |
| Best beach destinations in Asia in May | 14thof 50 | 86/100 |
| Places with the best weather in Asia in May | 16thof 50 | 94/100 |
Planning a trip? See the best time to visit Mersin.
QuestionsCommon questions about Mersin’s climate
When is the best time to visit Mersin?
That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, October sit closest to 20 °C on average, August is the warmest month and July the driest. The month-by-month table above has the full picture.
How hot does Mersin get?
In August, the warmest month, daily highs average 31 °C. About 67 days a year pass 30 °C. The highest value in the 1991–2020 record is 42 °C.
How cold does it get in winter?
Nights average 4.5 °C in January, the coldest month. A normal year has 7 nights below freezing.
Which month is wettest in Mersin?
December, averaging 129 mm over 9 days with rain. The driest month is July with 2 mm. The year as a whole averages 522 mm.
Are these figures a forecast?
No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Mersin rather than what any particular week will bring. Individual years can differ substantially from the normal.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.