Climate · Turkey

Istanbul

Warm and mostly dry from June to September; cool and damp from December to March.

Typical weather, averaged over 30 years41.0°N40 m above the sea
  1. Jan51°11°40°4°Rain on about three days a week.
  2. Feb51°11°39°4°Rain on about three days a week.
  3. Mar54°12°41°5°Rain on about three days a week.
  4. Apr62°17°46°8°Rain on about two days a week.
  5. May71°22°55°13°Rain on about one day a week.
  6. Jun80°27°64°18°Rain on about two days a week.
  7. Jul84°29°69°21°Rain on about one day a week.
  8. Aug86°30°71°22°Rain on about one day a week.
  9. Sep79°26°65°18°Rain on about two days a week.
  10. Oct71°22°59°15°Rain on about two days a week.
  11. Nov62°17°51°11°Rain on about two days a week.
  12. Dec54°12°44°7°Rain on about three days a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The best months

The warm season runs from June to September, with highs near 82°F and nights near 67°F. From December to March, highs are nearer 53°F. The rain comes from November to March, on about three days a week. July to August is the driest stretch, with rain on about one day a week. Daylight runs from about 9½ hours in December to 15 hours in June.The warm season runs from June to September, with highs near 28°C and nights near 19°C. From December to March, highs are nearer 12°C. The rain comes from November to March, on about three days a week. July to August is the driest stretch, with rain on about one day a week. Daylight runs from about 9½ hours in December to 15 hours in June.

Where Istanbul sits

Europe/Istanbul

this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
41.0°Nnorthern hemisphere
Above the sea
40 mlow-lying
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
8:27 AM8:00 AM7:18 AM6:26 AM5:47 AM5:31 AM5:44 AM6:13 AM6:43 AM7:14 AM7:51 AM8:22 AMsets 5:59 PMsets 6:37 PMsets 7:10 PMsets 7:42 PMsets 8:13 PMsets 8:37 PMsets 8:36 PMsets 8:05 PMsets 7:16 PMsets 6:25 PMsets 5:47 PMsets 5:37 PM
Nearest of ours
Ankara350 km east

The land around Istanbul, shaded by its typical high in January, the planning map's own layer.The land around Istanbul, shaded by its typical high in February, the planning map's own layer.The land around Istanbul, shaded by its typical high in March, the planning map's own layer.The land around Istanbul, shaded by its typical high in April, the planning map's own layer.The land around Istanbul, shaded by its typical high in May, the planning map's own layer.The land around Istanbul, shaded by its typical high in June, the planning map's own layer.The land around Istanbul, shaded by its typical high in July, the planning map's own layer.The land around Istanbul, shaded by its typical high in August, the planning map's own layer.The land around Istanbul, shaded by its typical high in September, the planning map's own layer.The land around Istanbul, shaded by its typical high in October, the planning map's own layer.The land around Istanbul, shaded by its typical high in November, the planning map's own layer.The land around Istanbul, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Through the year

week by week

Temperature

Highs from 51°F in January and February to 86°F in August.Highs from 11°C in January and February to 30°C in August.

Chance of a wet day

Wettest in January (46% of days), driest in July and August (14%).

Cloud cover

Clearest in July (10% cover), cloudiest in December and January (62%).

Daylight

From 9h 16m in December to 15h 04m in June.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the best months. Hover or tap a week for its figures.

Month by month

°F°C

Istanbul, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryWetter
40°4°51°11°
3 days62%9h 35m
FebruaryWetter
39°4°51°11°
3 days59%10h 34m
MarchWetter
41°5°54°12°
3 days57%11h 52m
April
46°8°62°17°
2 days51%13h 16m
MayAt its best
55°13°71°22°
1 day41%14h 28m
JuneWarm seasonAt its best
64°18°80°27°
2 days26%15h 04m
JulyWarm season
69°21°84°29°
1 day10%14h 47m
AugustWarm season
71°22°86°30°
1 day11%13h 45m
SeptemberWarm seasonAt its best
65°18°79°26°
2 days28%12h 23m
OctoberAt its best
59°15°71°22°
2 days43%10h 59m
NovemberWetter
51°11°62°17°
2 days51%9h 50m
DecemberWetter
44°7°54°12°
3 days62%9h 16m

When is the best time to visit Istanbul?


The best months are May to June, or September to October: highs near 75°F, nights near 61°F, and rain on about two days a week.The best months are May to June, or September to October: highs near 24°C, nights near 16°C, and rain on about two days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

Questions


What is the warmest month in Istanbul?

August, with highs near 86°F and lows near 71°F. The coolest are January and February, with highs near 51°F.August, with highs near 30°C and lows near 22°C. The coolest are January and February, with highs near 11°C.

When does it rain most in Istanbul?

January, with rain on about three days a week. July and August are the driest, with rain on about one day a week.

How long are the days in Istanbul?

From about 9½ hours in December to 15 hours in June.

When are the skies clearest in Istanbul?

July, when cloud covers about 10% of the sky on average. December and January are the cloudiest, at about 62%.

Places with a year like Istanbul's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to Istanbul's through the year, one place a country. “Six months apart”: their winter is Istanbul's summer.

Elsewhere in Turkey

All of Turkey

Where to stay

3 in our collection

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Istanbul. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.