What to do in Istanbul in May: weather, Kurban Bayramı and 2027 holidays

May weather: mild, dry and bright

Source: averages published for Istanbul by the General Directorate of Meteorology (MGM), the Turkish weather service; Sea of Marmara temperature over 1970-2025. The days are ideal for walking and taking the ferry; in the evening by the water a light jacket is still useful. At 15 °C on average, the sea is still cool for swimming.

Crowds and prices in May

Demand is high: May is one of the most pleasant months, and so one of the busiest, and the old city is well filled. Kurban Bayramı changes the picture: hotels on the coast and in nearby towns are full, bus, train and plane tickets out of Istanbul are expensive, while the centre is quieter and many shops close. If your dates are flexible, avoid the week of 15 to 19 May for long journeys, or choose it for the festive atmosphere. See where to stay in Istanbul.

Holidays and events in May 2027

Saturday 1 May: Labour Day

A public holiday. Marches and rallies can close streets and disrupt transport in the centre; allow extra time. 1 May 2027 falls on a Saturday.

Night of 5 to 6 May: Hıdırellez

Hıdırellez is the popular festival marking the arrival of spring, with bonfires, music and wishes. Gatherings take place in several neighbourhoods of Istanbul, and the city of Edirne holds Kakava and Hıdırellez every 5 and 6 May, with a large bonfire: see the excursion to Edirne. Istanbul's programmes change each year, so check them with the municipality. 5 May 2027 is a Wednesday.

Saturday 15 to Wednesday 19 May: Kurban Bayramı

According to the Diyanet calendar, the Feast of the Sacrifice runs from Sunday 16 to Wednesday 19 May 2027, with the half-day of arife on Saturday 15. The Grand Bazaar and many shops close; national palaces and some museums may change their hours, so check before you come. Restaurants in tourist districts stay open. See the guide to public holidays and bayrams.

Wednesday 19 May: Atatürk Commemoration, Youth and Sports Day

A national public holiday, which in 2027 coincides with the last day of Kurban Bayramı: the state announces bridging days shortly before the festival. Sports and official ceremonies take place in stadiums and on the main squares.

What to wear in May

• Light clothing for the afternoon, with a thin jacket for the evening on the Bosphorus.
• Comfortable walking shoes.
• Sunglasses, a hat and sunscreen: the sun becomes strong.
• Covered clothing in mosques, with a scarf for women; see what to wear in mosques.
• A small waterproof: a shower is still possible.

The best ideas for outings in May

• The Bosphorus by boat: May offers the softest light of the year for a Bosphorus cruise; see also the most beautiful ferry rides.
• Fortresses and villages: Rumeli Hisarı then the Bosphorus villages, see the villages of the European shore.
• Parks: the tulips are over, but the parks are green; see the parks and gardens of Istanbul.
• Evenings on a terrace: see nightlife in Istanbul.
• A hammam is still pleasant on a quiet day: see the best hammams.

Excursions in May

• The Princes' Islands: in May, before the summer crowds, by bike or on foot. Avoid weekends and bayram days, when ferries are full.
• Kilyos beach and the Black Sea shore: swimming is not yet pleasant, but walks are.
• Cappadocia and Ephesus: a good season, to book early if you travel around Kurban Bayramı. See excursions from Istanbul.

May 2027 in Istanbul at a glance

Going further

May follows what to do in Istanbul in April and precedes what to do in Istanbul in June. For the season, read Istanbul in spring and the guide to the best time to visit Istanbul.