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June is one of the most pleasant months to visit Istanbul, with warm, sunny days and comfortable evenings. During mid-June, daytime temperatures typically range from 25-28°C (77-82°F), while mornings and evenings are mild, usually around 18-20°C (64-68°F). 

The humidity is generally moderate, and rainfall is minimal during this time of year, making it ideal for both outdoor exploration and evening activities.

While the days are warm enough for comfortable sightseeing, we recommend bringing a light jacket or wrap for evenings, especially for rooftop dinners or Bosphorus cruises where the sea breeze can add a cool touch to the air.

For sun protection, we recommend bringing sunscreen, a sun hat, and sunglasses as the midday Mediterranean sun can be quite strong.

For evenings in Istanbul, we recommend packing business casual attire. The city’s upscale restaurants, particularly those overlooking the Bosphorus, maintain an elegant atmosphere where smart dress is customary. For men, collared shirts and dress pants are appropriate, while women might opt for dresses, skirts, or elegant pants with blouses. 

The Black Sea coast around Ağva experiences slightly different weather patterns from Istanbul, typically a few degrees cooler with higher humidity due to its coastal location and surrounding forests. In mid-June, daytime temperatures usually range from 22-25°C (72-77°F), while mornings and evenings are cooler at around 16-18°C (61-64°F). The region can experience occasional brief showers even in summer, adding to the lush greenery of the area.

For outdoor activities like hiking and canyoning, we recommend bringing appropriate gear: quick-drying clothes, a light waterproof jacket, and sturdy walking shoes with good grip. 

For sun protection, sunscreen, a hat, and sunglasses are essential, as the sun’s rays can be intense even on cooler days. 

For evening activities, a light sweater or jacket is recommended as temperatures can drop, especially after water activities or when the sea breeze picks up. It’s also advisable to pack an extra set of clothes and water shoes for canyoning adventures.

IMPORTANT: Clothing for visiting Mosques and other Holy Sites

When visiting Istanbul’s magnificent mosques and religious sites, appropriate dress is both a sign of respect and a requirement for entry. Women should cover their heads with a scarf and wear clothing that covers shoulders and knees. While most major mosques provide head coverings at the entrance, many visitors prefer to carry their own light scarf for convenience. 

Men should wear long pants and shirts with sleeves – short sleeves are acceptable, but sleeveless shirts are not appropriate.

All visitors to mosques will need to remove their shoes before entering, so wearing socks is recommended for comfort. Many mosques provide plastic bags to carry your shoes during your visit. The dress code is particularly strict at major religious sites like the Blue Mosque.