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Monthly averages for Mersin from the Turkish State Meteorological Service, measured over 1929–2025.
The warmest month is August, with an average high of 31.7 °C. The coldest is January, when the average low is 6.5 °C. January has the most rainy days (10.2 on average), and August the fewest (0.8).
Month by month
| Month | Avg high °C | Avg low °C | Rainy days | Sun (h/day) |
|---|---|---|---|---|
| January | 14.7 | 6.5 | 10.2 | 4.7 |
| February | 15.6 | 7 | 9 | 5.6 |
| March | 18.2 | 9.4 | 7.6 | 6.8 |
| April | 21.7 | 13.1 | 6.5 | 7.7 |
| May | 25.1 | 17 | 5 | 8.6 |
| June | 28.3 | 21 | 2.2 | 9.8 |
| July | 30.9 | 24.2 | 0.9 | 10.1 |
| August | 31.7 | 24.5 | 0.8 | 9.9 |
| September | 30.2 | 21.2 | 1.7 | 9.2 |
| October | 26.8 | 16.5 | 4.8 | 7.5 |
| November | 21.7 | 11.8 | 6.5 | 5.7 |
| December | 16.6 | 8.1 | 10.1 | 4.7 |
January
In January, Mersin averages a high of 14.7 °C and a low of 6.5 °C, with about 10.2 rainy days.
February
In February, Mersin averages a high of 15.6 °C and a low of 7 °C, with about 9 rainy days.
March
In March, Mersin averages a high of 18.2 °C and a low of 9.4 °C, with about 7.6 rainy days.
April
In April, Mersin averages a high of 21.7 °C and a low of 13.1 °C, with about 6.5 rainy days.
May
In May, Mersin averages a high of 25.1 °C and a low of 17 °C, with about 5 rainy days.
June
In June, Mersin averages a high of 28.3 °C and a low of 21 °C, with about 2.2 rainy days.
July
In July, Mersin averages a high of 30.9 °C and a low of 24.2 °C, with about 0.9 rainy days.
August
In August, Mersin averages a high of 31.7 °C and a low of 24.5 °C, with about 0.8 rainy days.
September
In September, Mersin averages a high of 30.2 °C and a low of 21.2 °C, with about 1.7 rainy days.
October
In October, Mersin averages a high of 26.8 °C and a low of 16.5 °C, with about 4.8 rainy days.
November
In November, Mersin averages a high of 21.7 °C and a low of 11.8 °C, with about 6.5 rainy days.
December
In December, Mersin averages a high of 16.6 °C and a low of 8.1 °C, with about 10.1 rainy days.
Sources
Meteoroloji Genel Müdürlüğü — Mersin (1929–2025) (opens in a new tab)