Istanbul, Türkiye
- Population: 15,754,053 (Istanbul province, 31 December 2025)
- Climate: no data. Not published: the weather service's reuse terms are not settled.
- Most daylight: June, 15 h 07 min (15th of each month, 2026)
- Least daylight: December, 9 h 15 min (15th of each month, 2026)
Warmest, coldest, wettest, most and least daylight: the highest or lowest of the 12 monthly values.
Last updated : first sourced version.
Month by month
No month pages: no climate data for this city. Not published: the weather service's reuse terms are not settled.
Facts
| Fact | Value and source |
|---|---|
| Country | Türkiye Source: United Nations Statistics Division (M49), checked |
| Population | 15,754,053 (Istanbul province, 31 December 2025) Source: Turkish Statistical Institute (TÜİK), checked |
| Area | 5,469 km² (Istanbul province, 2026) The mapping agency calls its figures nominal, not official. The Governorship of Istanbul gives 5,461. Source: General Directorate of Mapping (Harita Genel Müdürlüğü), checked |
| Coordinates | 41.0100° N, 28.9603° E rounded to four decimal places Source: Wikidata Query Service, checked |
| Time zone | Europe/Istanbul Source: GeoNames dump, checked |
| Languages | Turkish (official) Source: Constitution of the Republic of Türkiye, art. 3, checked |
| Currency | Turkish Lira (TRY) list dated 17 September 2026 Source: ISO 4217 list one (SIX Group), checked |
Climate by month
- High
- no data
- Low
- no data
- Rain
- no data
- Sunshine
- no data
Climate: no data. Not published: the weather service's reuse terms are not settled.
Looked at: WMO collection of climate normals, checked .
Daylight by month
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| Jan | 08:27 | 18:00 | 9 h 33 min |
| Feb | 07:59 | 18:38 | 10 h 40 min |
| Mar | 07:16 | 19:11 | 11 h 54 min |
| Apr | 06:25 | 19:44 | 13 h 18 min |
| May | 05:47 | 20:15 | 14 h 29 min |
| Jun | 05:31 | 20:38 | 15 h 07 min |
| Jul | 05:45 | 20:35 | 14 h 50 min |
| Aug | 06:14 | 20:03 | 13 h 49 min |
| Sep | 06:44 | 19:14 | 12 h 29 min |
| Oct | 07:15 | 18:24 | 11 h 08 min |
| Nov | 07:51 | 17:46 | 9 h 54 min |
| Dec | 08:22 | 17:37 | 9 h 15 min |
Sunrise and sunset computed with the NOAA Solar Calculator equations, to the minute, for the 15th of each month, 2026. Day length in hours and minutes. How we compute this
Source: NOAA Solar Calculator equations, checked .
Airports
| IATA code | Airport | Type | Distance, km |
|---|---|---|---|
| SAW | Istanbul Sabiha Gökçen International Airport | large airport | 32 |
| IST | İstanbul Airport | large airport | 35 |
Source: OurAirports airports.csv, checked .
Public holidays
| Date | Holiday |
|---|---|
| Thursday | New Year's Day |
| Thursday | Eid al-Fitr (from 1pm) |
| Friday | Eid al-Fitr (Day 1) |
| Saturday | Eid al-Fitr (Day 2) |
| Sunday | Eid al-Fitr (Day 3) |
| Thursday | National Sovereignty and Children's Day |
| Friday | Labour and Solidarity Day |
| Tuesday | Commemoration of Atatürk, Youth and Sports Day |
| Tuesday | Eid al-Adha (from 1pm) |
| Wednesday | Eid al-Adha (Day 1) |
| Thursday | Eid al-Adha (Day 2) |
| Friday | Eid al-Adha (Day 3) |
| Saturday | Eid al-Adha (Day 4) |
| Wednesday | Democracy and National Unity Day |
| Sunday | Victory Day |
| Wednesday | Republic Day (from 1pm) |
| Thursday | Republic Day |
Typed from the official list and re-checked, .
| Date | Holiday |
|---|---|
| Friday | New Year's Day |
| Monday | Eid al-Fitr (from 1pm) |
| Tuesday | Eid al-Fitr (Day 1) |
| Wednesday | Eid al-Fitr (Day 2) |
| Thursday | Eid al-Fitr (Day 3) |
| Friday | National Sovereignty and Children's Day |
| Saturday | Labour and Solidarity Day |
| Saturday | Eid al-Adha (from 1pm) |
| Sunday | Eid al-Adha (Day 1) |
| Monday | Eid al-Adha (Day 2) |
| Tuesday | Eid al-Adha (Day 3) |
| Wednesday | Eid al-Adha (Day 4) |
| Wednesday | Commemoration of Atatürk, Youth and Sports Day |
| Thursday | Democracy and National Unity Day |
| Monday | Victory Day |
| Thursday | Republic Day (from 1pm) |
| Friday | Republic Day |
Typed from the official list and re-checked, .
English names are from the holidays library where the official list gives none. How we compute this
Source: Official public holiday list (vakithesaplama.diyanet.gov.tr), checked ; Official public holiday list (vakithesaplama.diyanet.gov.tr), checked ; holidays Python library, checked . Library: holidays 0.105.
Other cities
In Türkiye
none
All cities
Sources
- Wikidata Query Service, Wikimedia Foundation. Attribution: Wikidata. Licence: CC0 1.0. Checked .
- GeoNames dump (cities15000, countryInfo), GeoNames. Attribution: GeoNames, https://www.geonames.org/. Licence: CC BY 4.0. Checked .
- OurAirports airports.csv, OurAirports (David Megginson). Attribution: OurAirports. Licence: Public domain. Checked .
- WMO Climatological Standard Normals for 1991-2020 (NCEI Accession 0253808), WMO Member Nations (each national weather service's own submission); archived by NOAA National Centers for Environmental Information. Attribution: WMO Member Nations (2023). WMO Climatological Standard Normals for 1991-2020 (NCEI Accession 0253808). Station files named in each record. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/800j-vn07. Accessed on the check date shown. Licence: No licence stated. Published by NOAA NCEI for WMO; citation requested. 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 .
- holidays Python library, run locally, Vacanza team. Attribution: holidays library, Vacanza team. Licence: MIT. Checked .
Official sources
- Constitution of the Republic of Türkiye, art. 3. Checked .
- General Directorate of Mapping (Harita Genel Müdürlüğü). Checked .
- ISO 4217 list one (SIX Group). Checked .
- Official public holiday list (vakithesaplama.diyanet.gov.tr). Also: vakithesaplama.diyanet.gov.tr/icerik.php?icerik=159. Checked .
- Turkish Statistical Institute (TÜİK). Checked .
- United Nations Statistics Division (M49). Checked .
Cite this page: City by Month. "Istanbul, Türkiye: facts and climate by month". https://citybymonth.com/cities/turkey/istanbul/. Last updated 2 October 2026.