Istanbul: Weather Guide & Climate
Complete month-by-month weather guide: Istanbul. Best time to visit: April, May, September, October. Plan your trip with detailed climate data.
Climate Overview
Istanbul has a moderate climate with average yearly highs of 19°C, lows of 13°C, and approximately 8 rainy days per month.
The best time to visit Istanbul is during April, May, September, October, when conditions are perfect for sightseeing and exploration
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Air Quality
Best Time
Apr, May, Sep, Oct
Hottest
Coldest
Driest Month
Forecast for your trip dates
Up to 16 days ahead| Month | High | Low | Rainy days | Condition |
|---|---|---|---|---|
| January | 9°C | 4°C | 11 | Good |
| February | 11°C | 5°C | 13 | Wet |
| March | 13°C | 7°C | 8 | Good |
| April | 15°C | 7°C | 7 | Excellent (best) |
| May | 21°C | 13°C | 9 | Excellent (best) |
| June | 25°C | 18°C | 13 | Wet |
| July | 28°C | 21°C | 2 | Good |
| August | 29°C | 21°C | 1 | Good |
| September | 27°C | 20°C | 5 | Excellent (best) |
| October | 23°C | 16°C | 9 | Excellent (best) |
| November | 15°C | 10°C | 6 | Good |
| December | 13°C | 8°C | 7 | Good |
Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025
Weather by Season
Winter
Dec–Feb
High: 11°C
Low: 6°C
Rainy days: 10 days/month
Spring
Mar–May
High: 16°C
Low: 9°C
Rainy days: 8 days/month
Summer
Jun–Aug
High: 27°C
Low: 20°C
Rainy days: 5 days/month
Autumn
Sep–Nov
High: 22°C
Low: 15°C
Rainy days: 7 days/month
Month-by-Month Weather Table
January
February
March
April
BestMay
BestJune
July
August
September
BestOctober
BestNovember
December
| Month | High | Low | Rainy days | Condition | View Details |
|---|---|---|---|---|---|
| January | 9°C | 4°C | 11 | Good | View Details → |
| February | 11°C | 5°C | 13 | Wet | View Details → |
| March | 13°C | 7°C | 8 | Good | View Details → |
| April (best) | 15°C | 7°C | 7 | Excellent | View Details → |
| May (best) | 21°C | 13°C | 9 | Excellent | View Details → |
| June | 25°C | 18°C | 13 | Wet | View Details → |
| July | 28°C | 21°C | 2 | Good | View Details → |
| August | 29°C | 21°C | 1 | Good | View Details → |
| September (best) | 27°C | 20°C | 5 | Excellent | View Details → |
| October (best) | 23°C | 16°C | 9 | Excellent | View Details → |
| November | 15°C | 10°C | 6 | Good | View Details → |
| December | 13°C | 8°C | 7 | Good | View Details → |
Istanbul
Where East meets West – Hagia Sophia and the Blue Mosque, bustling bazaars like the Grand Bazaar, Bosphorus cruises, and layers of history.
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Common Questions
What type of climate does Istanbul have?
Istanbul has a Moderate climate with average yearly temperatures of 19°C (highs) and 13°C (lows).
When is the best time to visit Istanbul?
The best time to visit Istanbul is during April, May, September, October, when temperatures average around 15°C and conditions are ideal for sightseeing.
What are the hottest and coldest months in Istanbul?
The hottest month in Istanbul is August with average highs of 29°C, while the coldest is January with average lows of 4°C.
When is the rainy season in Istanbul?
Istanbul sees the most rain in February (13 rainy days), while August is the driest month (1 rainy days).
More Istanbul Guides
Best Time to Visit
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Things to Do
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Itineraries
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Overview
Complete travel guide for Istanbul: top things to do, itineraries, and typical costs.