Will it rain today in Istanbul?
Should you take an umbrella in Istanbul? The forecast below loads live every time you open the page: rain now, when the next shower comes, and how much falls today and tomorrow.
Rain right now
It is raining in Istanbul right now: light rain. Today’s total: 5.4 mm over 12 wet hours. Tomorrow: 22 mm of rain.
As of 2026-10-16 17:35 UTC (NOAA GFS snapshot). Updating live…
Rain every 3 hours, today and tomorrow
Today · Friday 16 October
5.4 mm of rain, 12 wet hours, up to 0.9 mm/h. (the forecast covers part of the day)
Every 3 hours as a table
| Hours | Rain (mm) | mm/h | Type |
|---|---|---|---|
| 12:00–15:00 | 0.6 | 0.2 | light · rain |
| 15:00–18:00 | 0.8 | 0.3 | light · rain |
| 18:00–21:00 | 1.3 | 0.4 | light · rain |
| 21:00–00:00 | 2.6 | 0.9 | light · rain |
Tomorrow · Saturday 17 October
22 mm of rain, 24 wet hours, up to 2.3 mm/h.
Every 3 hours as a table
| Hours | Rain (mm) | mm/h | Type |
|---|---|---|---|
| 00:00–03:00 | 1.5 | 0.5 | light · rain |
| 03:00–06:00 | 0.9 | 0.3 | light · rain |
| 06:00–09:00 | 0.4 | 0.1 | light · rain |
| 09:00–12:00 | 0.5 | 0.2 | light · rain |
| 12:00–15:00 | 1.4 | 0.5 | light · rain |
| 15:00–18:00 | 3.8 | 1.3 | light · rain |
| 18:00–21:00 | 6.7 | 2.2 | light · rain |
| 21:00–00:00 | 6.9 | 2.3 | light · rain |
Times in local time (Europe/Istanbul). Each bar is the rain over 3 hours; striped bars are snow.
Rain map around Istanbul
The same NOAA GFS precipitation on the map, moving hour by hour: blue light, darker heavy. Tap for the value.
How much it rains in Istanbul, month by month
Istanbul gets about 624 mm of rain a year. The wettest month is December (82 mm), the driest July (20 mm); a normal October brings 70 mm.
Average monthly rain and snow (water equivalent) 2001–2025, NASA POWER (MERRA-2 reanalysis, public domain), on a ~50 km grid: mountains and coasts can differ locally.
More for Istanbul
Weather in Istanbul now · Rain totals map · Thunderstorms · Cloud map
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Questions
- Will it rain today in Istanbul?
- At 16 October 2026 the forecast said: It is raining in Istanbul right now: light rain. Today’s total: 5.4 mm over 12 wet hours. Tomorrow: 22 mm of rain. The box at the top of the page loads the latest NOAA GFS forecast every time you open it, with the time the next rain starts.
- How much does it rain in Istanbul?
- About 624 mm a year on average (2001–2025). December is the wettest month with 82 mm, July the driest with 20 mm.
- What do the rain amounts mean?
- 1 mm is a litre of water per square metre. Under 2.5 mm an hour is light rain (a drizzle to a steady rain), 2.5–7.6 moderate, above 7.6 heavy: you get soaked in minutes and streets can flood.
- How accurate is the forecast?
- It is the global NOAA GFS model on a 0.25° grid every 3 hours: good at telling a rainy day from a dry one, less at placing a single summer thunderstorm. Check the rain map for the showers moving around Istanbul.
Rain forecast nearby
How this page works
The rain is the one the rain layer of the map paints: NOAA GFS forecast (public domain), precipitation rate averaged over 3 hours, read at Istanbul and summed per local day. Rain or snow comes from the GFS precipitation type. The monthly normals are NASA POWER. No third-party weather service.