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Giresun, Giresun Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Giresun, Giresun?
Giresun, Giresun gets 1308 mm of precipitation a year over about 155 rainy days. August is the warmest month (average high 28°C) and February the coldest (average low 5°C).
Humid subtropical climate
Giresun, Giresun has warm summers and chilly winters. Daytime highs range from about 11°C in January to 28°C in August. October is usually the wettest month. The most comfortable time to visit is typically May to June and September, when daytime highs sit near 23°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 6° | 11° |
| Spring | Mar–May | 9° | 16° |
| Summer | Jun–Aug | 21° | 26° |
| Autumn | Sep–Nov | 15° | 21° |
How much rain does Giresun get?
Giresun gets 1308 mm of precipitation in an average year, spread over about 155 days with measurable rain.
October is the wettest month, with 176 mm. August is the driest, with 64 mm. March has the most rainy days, about 16.
The longest dry spell in the last five years lasted 13 days, to August 23, 2025.
From October 2025 to September 2026 Giresun got 366 mm of rain, against a normal of 1308 mm for those months. September 2026 had the most, with 157 mm.
Giresun weather by month
Giresun weather in January
In January, Giresun averages a high of 11°C and a low of 6°C. It gets 131 mm of precipitation over about 15 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The January record high is 24°C (2010) and the record low is -4°C (1973).
Giresun weather in February
In February, Giresun averages a high of 11°C and a low of 5°C. It gets 83 mm of precipitation over about 14 rainy days. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. The February record high is 30°C (1973) and the record low is -3°C (2012).
Giresun weather in March
In March, Giresun averages a high of 12°C and a low of 6°C. It gets 105 mm of precipitation over about 16 rainy days. Estimated sunshine is 28% of daylight hours, derived from ERA5 cloud cover. The March record high is 32°C (2025) and the record low is -2°C (2004).
Giresun weather in April
In April, Giresun averages a high of 14°C and a low of 9°C. It gets 68 mm of precipitation over about 14 rainy days. Estimated sunshine is 35% of daylight hours, derived from ERA5 cloud cover. The April record high is 34°C (2022) and the record low is -1°C (2004).
Giresun weather in May
In May, Giresun averages a high of 19°C and a low of 14°C. It gets 74 mm of precipitation over about 13 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The May record high is 31°C (2010) and the record low is 7°C (2005). May is one of the most comfortable months to visit.
Giresun weather in June
In June, Giresun averages a high of 24°C and a low of 18°C. It gets 87 mm of precipitation over about 12 rainy days. Estimated sunshine is 47% of daylight hours, derived from ERA5 cloud cover. The June record high is 35°C (2016) and the record low is 11°C (1973). June is one of the most comfortable months to visit.
Giresun weather in July
In July, Giresun averages a high of 27°C and a low of 21°C. It gets 92 mm of precipitation over about 10 rainy days. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. The July record high is 35°C (1973) and the record low is 16°C (1973).
Giresun weather in August
In August, Giresun averages a high of 28°C and a low of 22°C. It gets 64 mm of precipitation over about 10 rainy days. Estimated sunshine is 52% of daylight hours, derived from ERA5 cloud cover. The August record high is 33°C (2010) and the record low is 16°C (2009).
Giresun weather in September
In September, Giresun averages a high of 24°C and a low of 19°C. It gets 134 mm of precipitation over about 11 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The September record high is 33°C (2016) and the record low is 10°C (1974). September is one of the most comfortable months to visit.
Giresun weather in October
In October, Giresun averages a high of 20°C and a low of 15°C. It gets 176 mm of precipitation over about 15 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The October record high is 34°C (2003) and the record low is 6°C (1973).
Giresun weather in November
In November, Giresun averages a high of 16°C and a low of 11°C. It gets 162 mm of precipitation over about 12 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The November record high is 32°C (2016) and the record low is 2°C (2001).
Giresun weather in December
In December, Giresun averages a high of 13°C and a low of 7°C. It gets 132 mm of precipitation over about 13 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The December record high is 26°C (2010) and the record low is -2°C (2002).
Sunshine, humidity and wind in Giresun
July is the sunniest month in Giresun, with estimated sunshine of 56% of daylight hours from ERA5 cloud cover. March is the cloudiest, at 28%. The annual cloud-cover estimate is 41% of daylight hours; it is not a measurement of sunshine duration. Giresun is cloudier than 95% of Turkey.
Humidity peaks in May at 81% and is lowest in February at 70%.
Giresun has about 2 days a year above 32°C. Giresun is cooler than 94% of Turkey.
Giresun weather records
These records cover GIRESUN during 1973–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Giresun station is 35°C, on June 14, 2016. The coldest is -4°C, on January 17, 1973.
The wettest day in the available station history brought 156 mm of precipitation, on September 3, 2023.
The best time to visit Giresun
The most comfortable time to visit is typically May to June and September, when daytime highs sit near 23°C.
Winter (December–February) is chilly, with average highs around 11°C and lows near 6°C.
Spring (March–May) is mild, with average highs around 15°C and lows near 10°C.
Summer (June–August) is warm, with average highs around 26°C and lows near 21°C. It can feel humid.
Autumn (September–November) is warm, with average highs around 20°C and lows near 15°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 6° | 11° | 131 mm | 15 | 72% | 33% | 24° | -4° |
| February | 5° | 11° | 83 mm | 14 | 70% | 34% | 30° | -3° |
| March | 6° | 12° | 105 mm | 16 | 77% | 28% | 32° | -2° |
| April | 9° | 14° | 68 mm | 14 | 78% | 35% | 34° | -1° |
| May | 14° | 19° | 74 mm | 13 | 81% | 44% | 31° | 7° |
| June | 18° | 24° | 87 mm | 12 | 81% | 47% | 35° | 11° |
| July | 21° | 27° | 92 mm | 10 | 78% | 56% | 35° | 16° |
| August | 22° | 28° | 64 mm | 10 | 80% | 52% | 33° | 16° |
| September | 19° | 24° | 134 mm | 11 | 80% | 44% | 33° | 10° |
| October | 15° | 20° | 176 mm | 15 | 81% | 44% | 34° | 6° |
| November | 11° | 16° | 162 mm | 12 | 76% | 33% | 32° | 2° |
| December | 7° | 13° | 132 mm | 13 | 72% | 39% | 26° | -2° |
Station: GIRESUN, 0 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1973–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Giresun climate questions
How much rain does Giresun get?
Giresun gets 1308 mm of precipitation in an average year, over about 155 rainy days.
What is the wettest month in Giresun?
October is the wettest month in Giresun, with 176 mm. August is the driest, with 64 mm.
How many rainy days does Giresun have a year?
Giresun has about 155 days with measurable rain in an average year. March has the most, about 16.
What is the hottest month in Giresun?
August is the warmest month in Giresun, with an average high of 28°C.
What is the coldest month in Giresun?
February is the coldest month in Giresun, with an average low of 5°C.
What is the record high temperature in Giresun?
Within the available 1973–2026 station history, the record high at the Giresun station is 35°C, set on June 14, 2016. The record low is -4°C, on January 17, 1973.
What is the sunniest month in Giresun?
July is the sunniest month in Giresun, with estimated sunshine of 56% of daylight hours from ERA5 cloud cover. March is the cloudiest.
What is the best time to visit Giresun?
The most comfortable time to visit is typically May to June and September, when daytime highs sit near 23°C.