# Weather and transportation disruptions in Istanbul

> Live situation record from CLSTR: https://clstr.news/situations/weather-and-transportation-disruptions-in-istanbul
> Updated: 2026-09-28T16:18:47.000Z. Sources: 9. Developments: 2.

Meteorological forecasts for Istanbul initially predicted a period of significant weather changes, including thunderstorms, heavy rain, and rising humidity levels. 

Following these weather patterns, heavy rainfall resulted in severe transportation disruptions across the city. Traffic density reached up to 80 percent, with specific bottlenecks reported on the D-100 and TEM highways on both the European and Anatolian sides. Public transportation hubs, including metro and tram stations, also experienced extreme passenger density and long queues.

## Timeline

### 2026-09-28: Istanbul traffic paralyzed by heavy rainfall

Heavy rainfall in Istanbul has caused massive traffic congestion, with density reaching 80 percent and paralyzing major highways and public transportation hubs across both sides of the city.

6 sources. https://clstr.news/cluster/istanbul-traffic-paralyzed-by-heavy-rainfall

### 2026-09-17: Istanbul weather forecast predicts thunderstorms and heavy rain

Istanbul is bracing for thunderstorms and heavy rain, with temperatures between 18°C and 26°C and high humidity expected.

3 sources. https://clstr.news/cluster/istanbul-weather-forecast-predicts-thunderstorms-and-heavy-rain

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Cite as: Weather and transportation disruptions in Istanbul. CLSTR, https://clstr.news/situations/weather-and-transportation-disruptions-in-istanbul