Istanbul in June
In June, Istanbul has 36.6 mm (1.44 in) of rain, a daily high of 26.3 °C (79.3 °F) and a daily low of 18.1 °C (64.6 °F), as 1991-2020 model estimates; figures in brackets are converted. The daily high is a model estimate, adjusted against station records.
Last updated : back, with ERA5-Land model estimates.
Best time to visit Istanbul: June meets our rule. Expect 4.6 rain days (model estimate).
What June is like in Istanbul
- Concert music rings out inside Hagia Irene, a church some sixteen centuries old, when the Istanbul Music Festival fills June. Source: Daily Sabah, checked .
- In spring and summer, flowers line the streets of Büyükada. There is bougainvillea, lavender and mimosa, and people stroll through them. Source: Go Türkiye (Türkiye Tourism Promotion and Development Agency), checked .
- Istanbul families fill their summer houses in Şile from June to September. The town makes Şile cloth, a light, crinkly, see-through cotton. Source: Wikipedia, checked .
Key figures
Weather in June, 1991-2020 model estimates
- Daily high
- 26.3 °C (79.3 °F)
- Daily low
- 18.1 °C (64.6 °F)
- Rain
- 36.6 mm (1.44 in) in the month
- Sunshine
- no data
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
Model estimate for the ERA5-Land grid cell at 41.0° N, 29.0° E, 4 km from the city centre point.
How we define and convert these figures
Notes. Sunshine: Not in our ERA5-Land estimates.
Daylight on 15 June 2026
- Sunrise
- 05:31 local time
- Sunset
- 20:38 local time
- Day length
- 15 h 07 min
Day length 1-30 June: 14 h 56 min to 15 h 05 min, +9 min.
Source: NOAA Solar Calculator equations, checked .
Month by month
Each month: daily high in °C, then rain in mm, 1991-2020 model estimates.
ERA5-Land model estimates 1991-2020, as above, checked .
This month against the year
| Measure | June | Rank |
|---|---|---|
| Daily high | 26.3 °C | 3rd warmest |
| Daily low | 18.1 °C | 4th warmest |
| Rain | 36.6 mm | 3rd driest |
| Sunshine | no data | no data |
| Day length | 15 h 07 min | longest |
Equal values share a rank. How we rank months
Istanbul in June, on average: 4.6 rain days (1 mm or more). Model estimate, adjusted against station records.
ERA5-Land model estimates 1991-2020, as above, checked .
Day length: NOAA solar equations, checked .
Public holidays this month
June 2026: none.
June 2027: none.
Typed from the official lists for 2026 and 2027 and re-checked, .
Source: Official public holiday list (vakithesaplama.diyanet.gov.tr) for 2026 and 2027, checked .
Same month in 8 model-estimate cities
Istanbul is warmer than 4 of our 8 model-estimate cities in June by mean daily high. How we rank cities
Closest high and low in June: Lisbon (1.0 °C apart), Porto (2.2), Mumbai (6.8).
| City | Gap from Istanbul, °C | High, °C | Low, °C | Rain, mm | Sunshine, hours |
|---|---|---|---|---|---|
| Istanbul (this page) | — | 26.3 | 18.1 | 36.6 | no data |
| Lisbon (closest) | 1.0 | 25.5 | 17.0 | 12.9 | no data |
| Porto (closest) | 2.2 | 24.8 | 15.2 | 37.6 | no data |
| Mumbai (closest) | 6.8 | 31.4 | 26.5 | no data | no data |
| Bangkok | 7.8 | 33.7 | 26.3 | no data | no data |
| Sydney | 7.8 | 18.2 | 10.7 | 88.9 | no data |
| Melbourne | 11.2 | 14.9 | 7.2 | 56.6 | no data |
| Delhi | 11.6 | 39.8 | 27.8 | no data | no data |
Sources (1991-2020): ERA5-Land model estimates, checked . Each city's page names its grid cell. All sources in full on Methodology.
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 .
Official sources
Cite this page: City by Month. "Istanbul in June: weather, daylight, holidays". https://citybymonth.com/cities/turkey/istanbul/june/. Last updated 8 November 2026.