Best time to visit Istanbul
By our rule, the best months to visit Istanbul are April to June, and September and October. Daily highs then run from 16.7 °C (62.1 °F) in April to 26.3 °C (79.3 °F) in June, and rain from 36.6 mm in June to 75.8 mm in October, as 1991-2020 model estimates; figures in brackets are converted.
Rule: daily high over 16 °C and up to 28 °C, low 8 °C or more, rain 150 mm or less. Means hide hot, cold and wet days. No data on crowds, prices or events. How we test each month
Last updated : first sourced version.
Each month against the rule
| Month | Meets the rule | High, °C | Low, °C | Rain, mm |
|---|---|---|---|---|
| Jan | No: days average 9.3 °C, under our 16 °C; nights average 3.9 °C, under our 8 °C | 9.3 | 3.9 | 86.3 |
| Feb | No: days average 9.9 °C, under our 16 °C; nights average 3.8 °C, under our 8 °C | 9.9 | 3.8 | 72.5 |
| Mar | No: days average 12.2 °C, under our 16 °C; nights average 5.3 °C, under our 8 °C | 12.2 | 5.3 | 74.1 |
| Apr | Yes | 16.7 | 8.5 | 48.3 |
| May | Yes | 21.6 | 13.3 | 37.0 |
| Jun | Yes | 26.3 | 18.1 | 36.6 |
| Jul | No, a near miss: days average 28.8 °C, just over our 28 °C | 28.8 | 20.7 | 26.2 |
| Aug | No: days average 29.1 °C, over our 28 °C | 29.1 | 21.4 | 23.7 |
| Sep | Yes | 25.2 | 18.2 | 49.0 |
| Oct | Yes | 20.2 | 14.2 | 75.8 |
| Nov | No, a near miss: days average 15.3 °C, just under our 16 °C | 15.3 | 9.7 | 72.7 |
| Dec | No: days average 11.1 °C, under our 16 °C; nights average 6.0 °C, under our 8 °C | 11.1 | 6.0 | 99.3 |
Model estimate 1991-2020, not a weather station: ERA5-Land model estimates (Copernicus), computed by City by Month for the grid cell nearest the city. Daily high and Days with rain: model estimate, adjusted against station records. Licence: CC BY 4.0. Checked . How we make and test model estimates
Notes. Sunshine: Not in our ERA5-Land estimates.
Months by what matters to you
1991-2020 model estimates.
- Warmest daily highs: August 29.1 °C, July 28.8 °C, June 26.3 °C.
- Coolest daily highs: January 9.3 °C, February 9.9 °C, December 11.1 °C.
- Driest: August 23.7 mm, July 26.2 mm, June 36.6 mm.
- Sunniest: no data.
- Longest days: June 15 h 07 min, July 14 h 50 min, May 14 h 29 min.
Top three months by each mean. Equal values share a place. Day length on the 15th of each month, 2026.
Day length: NOAA solar equations, checked .
Sources
- Attribution: Copernicus Climate Change Service (2025): ERA5 Land hourly time-series data from 1950 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). DOI: 10.24381/ee82e357. Accessed on the check date shown. Generated using or contains modified Copernicus Climate Change Service information 2025. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains. Licence: CC BY 4.0. Checked .
- NOAA Solar Calculator equations, computed locally, NOAA Global Monitoring Laboratory (method); City by Month (computation). Attribution: Computed with the NOAA Solar Calculator method (no NOAA endorsement implied). Licence: Method, not data. Checked .
Cite this page: City by Month. "Best time to visit Istanbul, month by month". https://citybymonth.com/cities/turkey/istanbul/best-time/. Last updated 8 November 2026.