Weather in Istanbul for May 2026
In general, the average temperature in Istanbul at the beginning of May is 17.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22.4 °C by the end of May.
Istanbul experiences moderate rainfall in May, with an average of 9 rainy days and a total precipitation of 30.8 mm.
Is May a good time to visit Istanbul? check out the best time to travel to Istanbul page.
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Istanbul Weather May
Temperatures trend during May in Istanbul
May weather in Istanbul day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Sunny | 17° /12° | 1.1 mm | 4 | |
| 2 May |  Partly cloudy | 18° /11° | 0.6 mm | 5 | |
| 3 May | Sunny | 18° /11° | 0.8 mm | 4 | |
| 4 May |  Cloudy | 16° /11° | 6 mm | 4 | |
| 5 May |  Patchy rain possible | 18° /11° | 0.8 mm | 4 | |
| 6 May | Cloudy | 18° /12° | 1.2 mm | 4 | |
| 7 May | Patchy rain possible | 18° /12° | 0.1 mm | 5 | |
| 8 May | Partly cloudy | 21° /12° | 0.5 mm | 5 | |
| 9 May | Sunny | 18° /12° | 0.3 mm | 5 | |
| 10 May | Sunny | 17° /11° | 0.7 mm | 4 | |
| 11 May | Cloudy | 17° /11° | 0.1 mm | 4 | |
| 12 May | Sunny | 19° /11° | 0 mm | 5 | |
| 13 May | Sunny | 19° /12° | 0.4 mm | 5 | |
| 14 May | Sunny | 19° /12° | 0.2 mm | 5 | |
| 15 May | Patchy rain possible | 21° /13° | 0.1 mm | 5 | |
| 16 May | Partly cloudy | 21° /14° | 0.7 mm | 5 | |
| 17 May | Sunny | 21° /14° | 3.9 mm | 5 | |
| 18 May | Patchy rain possible | 20° /13° | 3 mm | 5 | |
| 19 May | Sunny | 19° /13° | 0.6 mm | 5 | |
| 20 May | Cloudy | 21° /13° | 0 mm | 5 | |
| 21 May | Sunny | 21° /13° | 3.5 mm | 5 | |
| 22 May |  Overcast | 22° /14° | 0.3 mm | 5 | |
| 23 May | Patchy rain possible | 22° /15° | 0.2 mm | 5 | |
| 24 May | Sunny | 23° /15° | 0.3 mm | 5 | |
| 25 May | Sunny | 22° /15° | 1.1 mm | 5 | |
| 26 May | Partly cloudy | 22° /15° | 1.1 mm | 5 | |
| 27 May | Sunny | 21° /15° | 0.6 mm | 5 | |
| 28 May | Patchy rain possible | 22° /16° | 0.2 mm | 5 | |
| 29 May |  Moderate or heavy rain shower | 22° /16° | 1.6 mm | 5 | |
| 30 May | Partly cloudy | 24° /16° | 0.3 mm | 6 | |
| 31 May | Patchy rain possible | 24° /16° | 0.4 mm | 6 | |
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Istanbul weather in May vs April vs June
| April | May | June | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Sunny |
| Temperatures | 15°/10° | 20°/14° | 26°/19° |
| Rainfall | 66 mm | 31 mm | 30 mm |
| Wind | 20.4 km/h | 19.8 km/h | 21.8 km/h |
| Humidity | 70% | 68% | 64% |
| Rainy days | 18 days | 9 days | 12 days |
| Dry days | 12 days | 22 days | 18 days |
Planning a trip to Istanbul? Discover the best time to visit
Istanbul in May - FAQ
What to pack to Istanbul in May?
As you prepare for your trip to Istanbul in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Istanbul, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
May rainfall patterns in Istanbul
UV exposure in Istanbul during May
Quick links
Where is Istanbul?Get accurate weather forecasts for Istanbul, located at latitude 41.014 and longitude 28.95. Stay updated with localized weather information tailored for Istanbul.