Istanbul, Turkey Weather
Istanbul hourly forecast: next 24 hours
Today's high of 83°F (28°C) is right in line with the typical August high of 84°F (29°C).
Current conditions in detail
Istanbul weather tomorrow (Tuesday, August 18)
Tomorrow in Istanbul looks sunny, with a high of 87° and an overnight low of 71°. Rain is unlikely (2% chance). Winds top out near 12 mph, and the UV index reaches 8 (very high).
Istanbul 14-day forecast
About the weather in Istanbul
Istanbul has a Mediterranean climate, marked by hot, dry summers and mild, wetter winters. Average daytime highs range from about 48°F (9°C) in January to around 84°F (29°C) in August, and the city records roughly 106 days of measurable precipitation a year.
Istanbul weather: quick facts
- Hottest month: August - highs near 84°F (29°C)
- Coldest month: January - highs near 48°F (9°C)
- Record high: 102°F (39°C) · Record low: 20°F (-7°C) (2015–2024)
- Wettest month: January (13 rainy days) · Sunniest: July (13.5 h sun/day)
- Climate type: Mediterranean - hot, dry summers and mild, wetter winters
- Snow: about 6 days a year
Temperatures through the year
The warmest stretch of the year centers on August. Highs average 84°F (29°C) and overnight lows stay near 71°F (22°C). The coolest month is January, with typical highs of 48°F (9°C) and lows around 39°F (4°C). Based on 2015–2024 weather data, temperatures have reached as high as 102°F (39°C) and dropped as low as 20°F (-7°C).
Rain, sun and snow
January is usually the wettest month. It brings about 4.3 inches (109 mm) of rain over 13 days, while August is the driest. July brings the most sunshine, averaging 13.5 hours of sun a day. Snow falls on about 6 days in a typical year, mostly from December through March.
Season by season
Spring (March through May)
Spring in Istanbul stays on the cool side of mild, with daytime highs averaging 62°F (17°C) and nights around 48°F (9°C); expect showers on roughly 29 days across the season.
Summer (June through August)
Summer in Istanbul is hot, with daytime highs averaging 82°F (28°C) and nights around 68°F (20°C); rain falls on about 17 days over the three months.
Fall (September through November)
Fall in Istanbul is pleasantly warm, with daytime highs averaging 69°F (21°C) and nights around 57°F (14°C); expect showers on roughly 24 days across the season.
Winter (December through February)
Winter in Istanbul is chilly, with daytime highs averaging 51°F (10°C) and nights around 41°F (5°C); expect showers on roughly 37 days across the season, plus around 5 snowy days.
Average temperatures in Istanbul by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 48° | 39° | 13 | 4.3 in | 5.5 h/day | 79% |
| February | 51° | 40° | 11 | 3.0 in | 6.8 h/day | 79% |
| March | 54° | 42° | 11 | 3.0 in | 7.8 h/day | 79% |
| April | 62° | 47° | 9 | 2.2 in | 10.2 h/day | 75% |
| May | 70° | 56° | 8 | 2.2 in | 11.7 h/day | 76% |
| June | 79° | 65° | 8 | 2.0 in | 12.9 h/day | 76% |
| July | 84° | 69° | 5 | 1.2 in | 13.5 h/day | 71% |
| August | 84° | 71° | 3 | 0.8 in | 12.6 h/day | 72% |
| September | 78° | 65° | 8 | 1.9 in | 10.9 h/day | 72% |
| October | 68° | 57° | 7 | 2.2 in | 8.4 h/day | 78% |
| November | 61° | 50° | 9 | 3.3 in | 7.1 h/day | 78% |
| December | 53° | 44° | 12 | 3.5 in | 5.5 h/day | 80% |