When should you visit each — and when are both ideal?
Best for both · April, May, Octobercomfortable in both cities
Climate Overview
Tehran (Iran · Tehran) has a continental climate; Rio de Janeiro (Brazil · Rio de Janeiro) is classified as temperate. Tehran's warmest month is July (37.5°C avg high); Rio de Janeiro peaks in January (30.9°C avg high).
Monthly Breakdown
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 |
Brazil · Rio de Janeiro
| Month | High | Low | Rain | Sun |
|---|
| JAN | 30.9° | 24° | 149mm | 10.8h |
| FEB | 30.3° | 23.8° | 148mm | 10.2h |
| MAR | 29.4° | 23.4° | 143mm | 10.5h |
| APR | 27.3° | 21.6° | 98mm | 9.9h |
| MAY | 25.4° | 19.5° | 65mm | 9.2h |
| JUN | 24.9° | 18.6° | 46mm | 8.9h |
| JUL | 24.8° | 17.9° | 46mm | 8.9h |
| AUG | 25.2° | 17.9° | 61mm | 8.8h |
| SEP | 26.6° | 19.4° | 73mm | 9.5h |
| OCT | 27.2° | 20.6° | 82mm | 9.3h |
| NOV | 27.2° | 21.2° | 150mm | 9.6h |
| DEC | 29.2° | 22.7° | 133mm | 10.6h |