Giresun climate
Giresun (Turkey) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 16 °C60 °F, and about 1,082 mm43 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Giresun climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1049 | 541 | 745 | 1244.9 |
| Feb | 1050 | 541 | 846 | 763.0 |
| Mar | 1254 | 744 | 949 | 933.6 |
| Apr | 1559 | 1049 | 1254 | 632.5 |
| May | 2067 | 1558 | 1763 | 722.9 |
| Jun | 2475 | 1966 | 2171 | 642.5 |
| Jul | 2679 | 2271 | 2475 | 552.2 |
| Aug | 2781 | 2272 | 2577 | 491.9 |
| Sep | 2476 | 2068 | 2272 | 1003.9 |
| Oct | 2169 | 1661 | 1865 | 1375.4 |
| Nov | 1661 | 1152 | 1456 | 1325.2 |
| Dec | 1253 | 745 | 1049 | 1164.6 |
| Year | 2781 | 541 | 1660 | 1,08243 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 77% | 78% | 1.9 | 9:32 |
| Feb | 77% | 76% | 2.6 | 10:35 |
| Mar | 76% | 76% | 3.5 | 11:49 |
| Apr | 76% | 69% | 4.6 | 13:15 |
| May | 77% | 63% | 5.6 | 14:27 |
| Jun | 76% | 52% | 6.4 | 15:06 |
| Jul | 75% | 45% | 6.4 | 14:50 |
| Aug | 75% | 43% | 5.8 | 13:47 |
| Sep | 75% | 46% | 4.7 | 12:24 |
| Oct | 76% | 57% | 3.2 | 11:02 |
| Nov | 74% | 62% | 2.2 | 9:50 |
| Dec | 75% | 73% | 1.6 | 9:15 |
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 Giresun is like
The warmest month is August, with an average high of 27 °C81 °F and a low of 22 °C72 °F. The coldest is January, when highs average 10 °C49 °F and lows 5 °C41 °F. There is a clear seasonal cycle, with 17.4 °C31.3 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,082 mm43 in of precipitation per year. The wettest three-month stretch is October–December, which brings 36% of the annual total. The wettest month is October (137 mm5.4 in), the driest is August (49 mm1.9 in).
Relative humidity ranges from 74% in November to 77% in May. The clearest skies (lowest average cloud amount, 43%) are typical of August. Average wind speed near the ground ranges from 6 km/h (4 mph) in May to 11 km/h (7 mph) in January. Daylight lasts from about 9.2 hours in December to 15.1 hours in June.
A lasting snow cover is typical in January. In those months the average snow depth in the reanalysis exceeds 10 cm. It is deepest in January, at about 11 cm.
Best time to visit Giresun
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–September. Average highs then reach 20 °C67 °F to 27 °C81 °F. Precipitation is 49 mm1.9 in to 100 mm3.9 in per month.
The most challenging month is January, which is cold, with average highs of 10 °C49 °F.
Comfort score: months are ranked by how close they come to an ideal. That means 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 Giresun
- Winter (December–February) — highs 1049 to 12 °C53 °F, lows 541 to 7 °C45 °F, about 105 mm4.2 in of precipitation a month. Pack a warm coat, layers and closed shoes and an umbrella or light rain jacket.
- Spring (March–May) — highs 1254 to 20 °C67 °F, lows 744 to 15 °C58 °F, about 76 mm3.0 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Summer (June–August) — highs 2475 to 27 °C81 °F, lows 1966 to 22 °C72 °F, about 56 mm2.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
- Autumn (September–November) — highs 1661 to 24 °C76 °F, lows 1152 to 20 °C68 °F, about 123 mm4.8 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Giresun compares
The nearest larger place is Ordu, about 42 km to the west. Compared with it, Giresun has practically the same average temperature. It receives a similar amount of precipitation.
World Climates covers 87 places in Turkey. By annual mean temperature, Giresun is the 40th warmest of them. By annual precipitation, it is the 3rd wettest. See all of them on the Turkey climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Sochi (Russia, Cfa), Split (Croatia, Csa) and Rimini (Italy, Cfa).
Nearby places
- Climate in Ordu 42 km · 16 °C61 °F · 1,082 mm43 in
- Climate in Trabzon 113 km · 17 °C62 °F · 824 mm32 in
- Climate in Erzincan 161 km · 11 °C52 °F · 481 mm19 in
- Climate in Tokat 169 km · 13 °C55 °F · 494 mm19 in
- Climate in Sivas 174 km · 10 °C50 °F · 418 mm16 in
- Climate in Samsun 177 km · 15 °C59 °F · 588 mm23 in
- Climate in Rize 180 km · 16 °C61 °F · 1,185 mm47 in
- Climate in Amasya 217 km · 14 °C58 °F · 465 mm18 in
Frequently asked questions
What is the warmest month in Giresun?
August is the warmest month in Giresun. Its average high is 27 °C (81 °F) and its average low is 22 °C (72 °F).
What is the coldest month in Giresun?
January is the coldest month. Its average high is 10 °C (49 °F) and its average low is 5 °C (41 °F).
When does it rain the most in Giresun?
October is the wettest month with about 137 mm (5.4 in) of precipitation. August is the driest with about 49 mm (1.9 in).
What is the best time to visit Giresun?
Judging by long-term averages, the most comfortable months are May–September.
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. The gaps are largest 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 241 m, while Giresun lies at about 39 m. Temperatures on this page were therefore adjusted by +1.3 °C2.4 °F using the standard lapse rate of 6.5 °C per 1,000 m.