When should you visit each — and when are both ideal?
Best for both · May, Octobercomfortable in both cities
Climate Overview
Istanbul (Turkey · Istanbul) has a temperate climate; Tehran (Iran · Tehran) is classified as continental. Istanbul's warmest month is August (29.2°C avg high); Tehran peaks in July (37.5°C avg high).
Monthly Breakdown
Turkey · Istanbul
| Month | High | Low | Rain | Sun |
|---|
| JAN | 9.2° | 4.3° | 103mm | 5.6h |
| FEB | 10.3° | 4.9° | 75mm | 6.9h |
| MAR | 11.9° | 5.8° | 77mm | 7.9h |
| APR | 16.1° | 8.7° | 53mm | 10.3h |
| MAY | 20.9° | 13.8° | 51mm | 11.9h |
| JUN | 25.4° | 18.4° | 46mm | 12.9h |
| JUL | 28.7° | 21.2° | 24mm | 13.6h |
| AUG | 29.2° | 22.3° | 17mm | 12.6h |
| SEP | 25.4° | 18.9° | 50mm | 10.9h |
| OCT | 20° | 14.5° | 61mm | 8.2h |
| NOV | 16° | 10.8° | 83mm | 7.0h |
| DEC | 11.5° | 6.8° | 86mm | 5.5h |
Iran · Tehran
| Month | High | Low | Rain | Sun |
|---|
| JAN | 8.6° | -1° | 37mm | 8.6h |
| FEB | 11° | 0.4° | 41mm | 9.0h |
| MAR | 16.6° | 5.4° | 57mm | 9.7h |
| APR | 22.4° | 10.5° | 39mm | 10.9h |
| MAY | 29.2° | 16.6° | 14mm | 12.1h |
| JUN | 35.4° | 22.5° | 2mm | 12.9h |
| JUL | 37.5° | 25.7° | 2mm | 12.9h |
| AUG | 35.8° | 24° | 1mm | 12.7h |
| SEP | 32.1° | 20.4° | 2mm | 11.3h |
| OCT | 24° | 13.5° | 21mm | 10.2h |
| NOV | 14.8° | 5.6° | 42mm | 8.4h |
| DEC | 10.5° | 1.3° | 39mm | 7.9h |