Best Time to Visit
🇹🇷 Istanbul, Turkey · Europe
Based on 30-year climate data (1991-2020) from Open-Meteo
Jan
8°
4°
Fair
Feb
9°
4°
Fair
Mar
11°
5°
Good
Apr
15°
8°
Great
May
20°
13°
Great
Jun
25°
18°
Great
Jul
28°
21°
Great
Aug
28°
21°
Great
Sep
24°
18°
Great
Oct
19°
14°
Good
Nov
14°
9°
Good
Dec
10°
6°
Fair
| Month | High | Low | Rain Days | Sunshine | Humidity | UV | Rating | Details |
|---|---|---|---|---|---|---|---|---|
| January | 8°C | 4°C | 13 | 6h | 65% | 1 | Fair | View |
| February | 9°C | 4°C | 12 | 7h | 65% | 1 | Fair | View |
| March | 11°C | 5°C | 11 | 9h | 65% | 6 | Good | View |
| AprilRecommended | 15°C | 8°C | 8 | 10h | 65% | 6 | Great | View |
| MayRecommended | 20°C | 13°C | 6 | 12h | 65% | 9 | Great | View |
| JuneRecommended | 25°C | 18°C | 6 | 13h | 65% | 9 | Great | View |
| JulyRecommended | 28°C | 21°C | 4 | 14h | 65% | 9 | Great | View |
| AugustRecommended | 28°C | 21°C | 3 | 13h | 65% | 9 | Great | View |
| SeptemberRecommended | 24°C | 18°C | 7 | 11h | 65% | 6 | Great | View |
| October | 19°C | 14°C | 9 | 8h | 65% | 6 | Good | View |
| November | 14°C | 9°C | 10 | 7h | 65% | 1 | Good | View |
| December | 10°C | 6°C | 13 | 5h | 65% | 1 | Fair | View |
Data source: Open-Meteo ERA5 reanalysis archive, 30-year historical normals (1991-2020). Temperatures in Celsius. Sunshine hours are daily averages.
Avg: 15°C high, 9°C low
Mild conditions at 15°C (59°F), layers recommended. Occasional showers possible. Nights cool to 9°C (48°F).
Avg: 27°C high, 20°C low
Comfortable warmth at 27°C (81°F), ideal for outdoor activities. Rainfall is low. Nights cool to 20°C (68°F).
Avg: 19°C high, 14°C low
Mild conditions at 19°C (66°F), layers recommended. Occasional showers possible. Nights cool to 14°C (57°F).
Avg: 9°C high, 5°C low
Cool to cold at 9°C (48°F), warm clothing essential. Rain is frequent, waterproof gear recommended. Nights cool to 5°C (41°F).
The least favorable time to visit Istanbul is January and December. During this period, you can expect cold weather, frequent rain.
January
Challenges: cold weather, frequent rain
December
Challenges: cold weather, frequent rain
February
Challenges: cold weather, frequent rain
Note: visiting during off-peak months often means lower prices, fewer crowds, and a more authentic experience.
Packing recommendations for visiting Istanbul during the best travel months (July, August, April), when temperatures range from 17°C to 24°C:
Istanbul has a Mediterranean climate (Koppen classification: Csa). The warmest month is August with highs of 28°C, while the coldest month is January at just 8°C. Annual rainfall averages 685mm across approximately 102 rain days.
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 8 | 9 | 11 | 15 | 20 | 25 | 28 | 28 | 24 | 19 | 14 | 10 |
| Low °C | 4 | 4 | 5 | 8 | 13 | 18 | 21 | 21 | 18 | 14 | 9 | 6 |
| Rain Days | 13 | 12 | 11 | 8 | 6 | 6 | 4 | 3 | 7 | 9 | 10 | 13 |
| Rain mm | 85 | 71 | 73 | 47 | 37 | 36 | 20 | 21 | 46 | 78 | 72 | 99 |
| Sun h/day | 6 | 7 | 9 | 10 | 12 | 13 | 14 | 13 | 11 | 8 | 7 | 5 |
| Humidity % | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| UV Index | 1 | 1 | 6 | 6 | 9 | 9 | 9 | 9 | 6 | 6 | 1 | 1 |
Considering alternatives to Istanbul? Compare the best travel months for nearby cities:
For a complete day-by-day weather breakdown including packing lists, activities, and local events, explore each month individually:
January
February
March
April
May
June
July
August
September
October
November
December
Explore weather guides for other popular destinations: