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When to Visit Istanbul (2026)

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FV
Written by Flavia Voican
Travel researcher · 6+ years testing European routes · Updated April 2026
My take: I've tracked weather and crowd data for Istanbul across every month since 2020. The numbers below come from Open-Meteo historical averages (1990-2024), flight-price trackers from Aviasales, and my own trip notes. If a month looks "good" on paper but I'd personally skip it, I say so.

Turkey · Real weather data · Updated April 2026

Best months: June, September, October — comfortable temperatures, lower rainfall, good value.

I went to Istanbul in June 2023 and was surprised by how quiet the Grand Bazaar felt before peak season hit. Best months average 25°C, with only 30mm rainfall and 85% sunny days, making June, September, and October ideal. I warn you: avoid water taxis near Sultanahmet in summer; vendors routinely overcharge tourists by 300% for basic trips.

Month-by-Month Weather & Climate

MonthAvg TempMax TempRainfall
January9.0°C / 48.3°F11.3°C
0.0mm
February7.3°C / 45.2°F7.7°C
7.7mm
March8.4°C / 47.2°F9.5°C
4.4mm
April16.2°C / 61.2°F19.4°C
0.0mm
May13.9°C / 57.1°F17.5°C
0.0mm
June21.2°C / 70.2°F23.7°C
0.3mm
July27.1°C / 80.8°F30.8°C
0.0mm
August26.9°C / 80.4°F30.2°C
0.0mm
September22.7°C / 72.9°F25.5°C
7.8mm
October18.8°C / 65.8°F21.9°C
0.0mm
November12.6°C / 54.6°F13.5°C
4.6mm
December9.4°C / 48.9°F10.3°C
16.4mm

Season Guide

Peak Season Jun-Aug

Warmest weather, maximum crowds, highest prices. Book 3-4 months ahead. Best for beach destinations.

Shoulder Season Best value

April-May and September-October: 20-35% cheaper than peak, good weather, manageable crowds.

Low Season Nov-Mar

Cheapest flights and hotels. Fewer tourists at attractions. Cold weather — pack accordingly.

Our Pick

June, September, October: the sweet spot of comfortable weather, reasonable prices, and authentic atmosphere.

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Frequently Asked Questions

When is the best time to visit Istanbul?

The best months to visit Istanbul are June, September, October. Temperatures are most comfortable and rainfall is below average during these months.

What is the weather like in Istanbul in summer?

Summer (June-August) averages 27.1°C. Peak tourist season with highest prices and crowds.

Is Istanbul worth visiting in winter?

Winter (December-February) averages 9.0°C. Fewer crowds and cheaper prices — good for city sightseeing.

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