Istanbul is at its best from April to May and September to October.
It is busiest and priciest in April to September.
Here is every month at a glance, the dates to plan around, and flights from five Indian cities.
Istanbul month by month
Average highs and lows, rain, the season and what's on, for the next twelve months.
| Month | Weather | Season | What's on |
|---|---|---|---|
| October 2026Best weather | 20° / 13°some rain, 65 mm | Shoulder | Dussehra |
| November 2026 | 16° / 10°some rain, 86 mm | Off-season | Diwali |
| December 2026 | 11° / 6°rainy spells, 102 mm | Off-season | Christmas and New Year |
| January 2027 | 9° / 3°rainy spells, 109 mm | Off-season | Christmas and New YearRepublic Day weekend |
| February 2027 | 10° / 4°some rain, 77 mm | Off-season | Winter: cold, wet and windy (around 8-10°C) with the odd snowfall; the quietest and... |
| March 2027 | 12° / 5°some rain, 72 mm | Shoulder | Eid al-FitrHoliGood Friday weekend |
| April 2027Best weather | 16° / 8°some rain, 61 mm | Peak | Indian summer holidays |
| May 2027Best weather | 20° / 13°some rain, 69 mm | Peak | Indian summer holidaysEid al-Adha |
| June 2027 | 25° / 18°some rain, 58 mm | Peak | Indian summer holidays |
| July 2027 | 28° / 20°mostly dry, 39 mm | Peak | Summer: hot (28-30°C) and humid, with big crowds at Hagia Sophia and the Grand Bazaar. |
| August 2027 | 28° / 22°mostly dry, 26 mm | Peak | Summer: hot (28-30°C) and humid, with big crowds at Hagia Sophia and the Grand Bazaar. |
| September 2027Best weather | 25° / 18°some rain, 63 mm | Peak | Spring and autumn: 17-25°C, ideal for walking the old city and Bosphorus cruises. |
Dates to plan around
Festivals, holidays and closures in Istanbul, and the Indian holiday rushes that raise fares.
- 20 OctDussehraDussehra falls on Tuesday 20 Oct: many take the Monday off for a four-day weekend, so short trips abroad cost more that week.
- 6–10 NovDiwaliDiwali (Lakshmi Puja on Sunday 8 Nov): the busiest travel week of the autumn. Fares out of India rise, and short trips to Dubai, Bangkok and Singapore book up.
- 19 Dec – 3 JanChristmas and New YearThe priciest fortnight of the year to fly out of India: school holidays, Christmas and New Year all at once. Book early or go just before or after.
- 23–26 JanRepublic Day weekendRepublic Day falls on Tuesday 26 Jan: take the Monday off and it's a four-day weekend, so short trips abroad book up.
- 9–12 Mar · expectedEid al-FitrThe end of Ramadan (expected 9 or 10 Mar): a few days of public holidays, with busier hotels, flights and malls.
- 22–23 MarHoliHoli (22-23 Mar) and Good Friday (26 Mar) fall in the same week, a favourite week for short trips abroad, so fares rise.
- 26–28 MarGood Friday weekendGood Friday (26 Mar) makes a long weekend in India, just after Holi.
- 15 Apr – 15 Jun · expectedIndian summer holidaysSchool holidays (roughly mid-April to mid-June, varying by state): outbound family travel peaks and fares climb, especially to the Gulf, Southeast Asia and Europe.
- 15–19 May · expectedEid al-AdhaExpected 16 or 17 May: several days of public holidays; hotels and flights are busier.
- 27–31 OctDiwaliDiwali (Lakshmi Puja on Friday 29 Oct): the busiest travel week of the autumn. Fares out of India rise, and short trips abroad book up.
Flights to Istanbul from India
The cheapest fare our scanner has seen from each city in the last two weeks. Open a route to price every month live.
Good to know
When is the best time to visit Istanbul?
The best weather in Istanbul is from April to May and September to October. Istanbul Tulip Festival: millions of tulips in Emirgan and Gülhane parks through April. Peak season, with the most visitors and the highest hotel prices, is April to September. The quietest months are November to February.
When is Istanbul most crowded?
Peak season is April to September, when stays cost the most and the sights are busiest.
What is the cheapest way to fly to Istanbul from India?
Of the Indian cities we track, Delhi has the lowest fare right now: ₹15,313 (one-way) for Sun 31 Jan.
How hot does Istanbul get?
The hottest month is August, with average highs of 28°C; the coolest nights come in January, around 3°C.