Weather in Gaziantep

Rain is wet season runs from November to March, inside an annual total of 462 mm. The wettest month is December at 80 mm; the driest is July at 2 mm.

Gaziantep is in Turkey at 37.1°N. The 2001–2020 NASA POWER daily record describes a continental climate with a wide temperature swing. July is the warmest month (average 29.2°C, high 37.9°C) and January is the coolest (average 3.1°C, low -1.4°C). On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are May, June, and September.

Rainfall pattern

The wet season in Gaziantep starts in November and ends in March (November, December, January, February, and March). December is the core of it at 80 mm. July is the other extreme, with 2 mm.

A rainy day here is a day with at least 1 mm in the NASA POWER series. December averages 9 such days; July averages 1.

Temperature through the year

Monthly average highs run from 7.5°C in January to 37.9°C in July. Nights follow the same curve: -1.4°C in January and 20.5°C in July.

Mean high across all twelve months is 22.6°C and mean low is 9.4°C. These are 20-year grid averages, so a city station can read a few degrees warmer or cooler.

The calendar in Gaziantep

The year bottoms out in January. Plan for -1.4°C at night and 7.5°C in the afternoon. February: 10.1°C high, 0.0°C low, 69 mm rain, 78% humidity. March closes the wet season: 54 mm over 8 rainy days, then the calendar dries. April brings 46 mm and 8 rainy days; temperatures run from 7.3°C to 20.3°C. May stands apart from the months beside it: 26.1°C / 11.9°C and 26 mm. June: 32.9°C high, 16.7°C low, 9 mm rain, 45% humidity.

July is the warmest month. Afternoon highs average 37.9°C and nights settle near 20.5°C, with 2 mm of rain. August brings 3 mm and 1 rainy days; temperatures run from 20.8°C to 37.6°C. September stands apart from the months beside it: 32.7°C / 17.3°C and 10 mm. October stands apart from the months beside it: 25.2°C / 12.1°C and 32 mm. The wet season opens in November. Expect 53 mm and 7 rainy days, with nights around 4.7°C. December is the wettest month — 80 mm and 9 rainy days, with 75% humidity.

Best months to visit Gaziantep

The three months with the highest comfort score are May, June, and September: May (19.0°C average, 26 mm, 59% humidity); June (24.8°C average, 9 mm, 45% humidity); September (25.0°C average, 10 mm, 41% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the wet season itself — fewer crowds, greener landscape, heavier rain — aim at November–March instead of the score.

How Gaziantep compares inside Turkey

Adana is about 183 km away: Gaziantep is 2.0°C cooler than Adana in its hottest month and 174 mm drier over the year than Adana. Adana’s wettest month is December (113 mm) versus December here.

Kayseri is about 250 km away: Gaziantep is 8.0°C warmer than Kayseri in its hottest month and 87 mm wetter over the year than Kayseri. Kayseri’s wettest month is May (47 mm) versus December here.

Diyarbakır is about 268 km away: Gaziantep is 1.5°C cooler than Diyarbakır in its hottest month and a similar annual rainfall (501 mm in Diyarbakır). Diyarbakır’s wettest month is December (74 mm) versus December here.