LANGUAGE
In Istanbul, the official and most widely spoken language is Turkish. While English is not commonly spoken among the general population, many professionals in the tourism industry have a functional command of English.
CURRENCY
The official currency in Istanbul is the Turkish Lira (TRY). Each lira is divided into 100 kurus.
Credit cards are widely accepted in hotels, restaurants, and shops. However, it is advisable to carry some cash for small vendors, local markets, or places that may not accept cards.
FOREIGN EXCHANGE
Currency exchange services are available at both Istanbul airports and throughout the city. While convenient, airport exchange rates may not be as favorable as those offered by banks or authorised exchange offices in the city. ATMs are also widely available for cash withdrawals.
ELECTRICITY
In Istanbul, the standard mains voltage is 220V (often cited as 230V) with a frequency of 50Hz. Power outlets are Type F (the two-round-prong European style with side grounding); Type C plugs (two round pins) will also fit these sockets. Travelers from countries using different plug types should bring appropriate adapters for their devices (and a voltage converter if the device isn’t dual-voltage).
LOCAL TIME
Istanbul operates on Turkey Time (TRT), which is UTC/GMT +3 hours. Türkiye does not observe daylight saving time, so this offset remains the same year-round.
TIPPING
In Türkiye, tipping is appreciated but not obligatory. In restaurants it’s customary to leave around 5–10% of the bill for good service. High-end or tourist-focused restaurants might include a service charge (servis ücreti) of about 10% in the bill; if you see this listed, no additional tip is expected. Tipping taxi drivers is not generally expected, but it’s common to round up the fare for convenience (for example, telling the driver to “keep the change” on a TL 18 fare by paying TL 20).
Read more here: Tipping in Istanbul: When & How Much 2026
WEATHER
In October, Istanbul experiences mild autumn weather. Average daytime temperatures are around 19–20°C (66–68°F), with nights cooling to roughly 14–15°C (57–59°F). Rainfall in October is moderate – about 70–80 mm total over the month, typically spread across 8–11 days of some precipitation. While sunshine is still fairly common, it’s wise to pack a light jacket for the cooler evenings and an umbrella or raincoat for occasional showers. Overall, October’s climate is comfortable and generally favorable for sightseeing, as the summer heat has eased.
DRESS CODE
When traveling to Istanbul, there is no strict dress code; casual or smart-casual attire is acceptable for most venues and events. However, local cultural norms tend toward modesty. It’s advisable to avoid extremely revealing clothing, especially in traditional areas or religious sites. If you plan to visit mosques (e.g. the Blue Mosque or Hagia Sophia), attire should cover your shoulders and knees, and women are required to cover their hair (scarves are usually provided at mosque entrances if needed). In general, dressing in a modest, neat style will help you blend in and show respect for local customs.
Read more here: What Women Tourists Should Wear in Istanbul? | Istanbul Lifestyle & Experiences
FOOD AND DRINKS
Tap water in Istanbul is treated and meets national safety standards, but due to factors like older pipes and varying water taste, many locals do not drink it directly. Instead, residents and visitors often opt for bottled water (widely available and inexpensive) or use filters and boiling for drinking water as a precaution. Using tap water to brush your teeth or to boil for tea/coffee is generally fine, but for drinking straight from the tap it’s recommended to stick to bottled or purified water to avoid any potential stomach upsets. Hotels typically provide complimentary bottled water, and in restaurants you will usually be served bottled water.
SIGHTSEEING TIPS
Istanbul offers numerous attractions, including the iconic Hagia Sophia, the Blue Mosque, the opulent Topkapi Palace, and the bustling Grand Bazaar, as well as vibrant districts like Beyoğlu (around Taksim Square) and Kadıköy (on the Asian side) that showcase local culture. To avoid long queues at popular sites, consider booking tickets or tours in advance – for example, online reservations or guided tours can save time at places like Topkapi Palace or the Galata Tower. Additionally, exploring a lesser-known highlight can enrich your visit: for instance, taking a ferry to the Princes’ Islands (Adalar) offers a peaceful, scenic escape from the city – these small islands are car-free and provide wonderful views of Istanbul from the sea, as well as a look at historic summer houses and quiet town squares not crowded with tourists. Booking ahead for any major attraction, or visiting during non-peak hours, will help ensure you make the most of your sightseeing time in Istanbul.
To discover more about Istanbul, please visit the official website of Istanbul Convention Bureau
