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Monthly averages for Sinop from the Turkish State Meteorological Service, measured over 1936–2025.
The warmest month is August, with an average high of 26.6 °C. The coldest is February, when the average low is 4.3 °C. December has the most rainy days (15.4 on average), and July the fewest (5.3).
Month by month
| Month | Avg high °C | Avg low °C | Rainy days | Sun (h/day) |
|---|---|---|---|---|
| January | 9.9 | 4.7 | 15.3 | 2.3 |
| February | 9.8 | 4.3 | 13.4 | 3 |
| March | 10.7 | 5.1 | 13.6 | 3.9 |
| April | 14.1 | 8 | 11.2 | 5.3 |
| May | 18.3 | 12.3 | 10.2 | 6.6 |
| June | 23.2 | 17 | 7.7 | 8.8 |
| July | 26.1 | 20 | 5.3 | 9.6 |
| August | 26.6 | 20.4 | 6 | 8.7 |
| September | 23.4 | 17.4 | 8.9 | 6.8 |
| October | 19.4 | 13.8 | 12.2 | 4.7 |
| November | 15.7 | 10.1 | 12.4 | 3.3 |
| December | 12.2 | 6.9 | 15.4 | 2.3 |
January
In January, Sinop averages a high of 9.9 °C and a low of 4.7 °C, with about 15.3 rainy days.
February
In February, Sinop averages a high of 9.8 °C and a low of 4.3 °C, with about 13.4 rainy days.
March
In March, Sinop averages a high of 10.7 °C and a low of 5.1 °C, with about 13.6 rainy days.
April
In April, Sinop averages a high of 14.1 °C and a low of 8 °C, with about 11.2 rainy days.
May
In May, Sinop averages a high of 18.3 °C and a low of 12.3 °C, with about 10.2 rainy days.
June
In June, Sinop averages a high of 23.2 °C and a low of 17 °C, with about 7.7 rainy days.
July
In July, Sinop averages a high of 26.1 °C and a low of 20 °C, with about 5.3 rainy days.
August
In August, Sinop averages a high of 26.6 °C and a low of 20.4 °C, with about 6 rainy days.
September
In September, Sinop averages a high of 23.4 °C and a low of 17.4 °C, with about 8.9 rainy days.
October
In October, Sinop averages a high of 19.4 °C and a low of 13.8 °C, with about 12.2 rainy days.
November
In November, Sinop averages a high of 15.7 °C and a low of 10.1 °C, with about 12.4 rainy days.
December
In December, Sinop averages a high of 12.2 °C and a low of 6.9 °C, with about 15.4 rainy days.
Sources
Meteoroloji Genel Müdürlüğü — Sinop (1936–2025) (opens in a new tab)