Experience the charm of Istanbul's unique weather, where European and Asian climates collide. The best time to visit is from April to June or September to October, with temperatures ranging between 15°C (59°F) and 25°C (77°F). Did you know that Istanbul averages around 60 rainy days per year? Yet, the city's vibrant energy never wanes. For an unforgettable experience, stroll along the historic Istiklal Street during a gentle spring shower or under the moonlight in autumn.
Today's Forecast
5-Day Forecast
Istanbul Climate & Weather Averages
Istanbul is warmest in August, when daytime highs average 29°C, and coldest in January at around 9°C. The wettest month is January. The table below shows the monthly averages for Istanbul, based on recorded data from 2015–2024.
| Month | Avg High | Avg Low | Rainfall |
|---|---|---|---|
| Jan | 9° | 4° | 107 mm |
| Feb | 10° | 5° | 76 mm |
| Mar | 12° | 6° | 74 mm |
| Apr | 16° | 9° | 56 mm |
| May | 21° | 13° | 53 mm |
| Jun | 26° | 19° | 42 mm |
| Jul | 29° | 21° | 22 mm |
| Aug | 29° | 22° | 15 mm |
| Sep | 26° | 19° | 49 mm |
| Oct | 20° | 14° | 54 mm |
| Nov | 16° | 11° | 84 mm |
| Dec | 11° | 7° | 91 mm |
A warming climate: Istanbul's warmest month (August) has warmed from an average high of 27°C in the 1950s to 29°C today — a shift of +2°C over roughly seventy years.
Best time to visit: May–September offers the most comfortable conditions, with daytime highs around 24°C. Pack light, breathable layers and a light waterproof — Istanbul sees rain year-round, peaking in January. For the coldest spell around January, bring a warm coat.
Source: Open-Meteo ERA5 archive. Averages computed from daily records.