Best Time to Visit
🇮🇷 Tehran, Iran · Asia
Based on 30-year climate data (1991-2020) from Open-Meteo
Jan
6°
-5°
Good
Feb
8°
-3°
Good
Mar
14°
2°
Good
Apr
20°
8°
Good
May
27°
14°
Great
Jun
33°
20°
Good
Jul
36°
24°
Good
Aug
35°
23°
Good
Sep
30°
19°
Great
Oct
23°
12°
Great
Nov
14°
4°
Good
Dec
8°
-2°
Good
| Month | High | Low | Rain Days | Sunshine | Humidity | UV | Rating | Details |
|---|---|---|---|---|---|---|---|---|
| January | 6°C | -5°C | 8 | 9h | 65% | 2 | Good | View |
| February | 8°C | -3°C | 9 | 9h | 65% | 2 | Good | View |
| March | 14°C | 2°C | 9 | 10h | 65% | 6 | Good | View |
| April | 20°C | 8°C | 9 | 11h | 65% | 6 | Good | View |
| MayRecommended | 27°C | 14°C | 5 | 12h | 65% | 9 | Great | View |
| June | 33°C | 20°C | 2 | 13h | 65% | 9 | Good | View |
| July | 36°C | 24°C | 1 | 13h | 65% | 9 | Good | View |
| August | 35°C | 23°C | 1 | 13h | 65% | 9 | Good | View |
| SeptemberRecommended | 30°C | 19°C | 1 | 11h | 65% | 6 | Great | View |
| OctoberRecommended | 23°C | 12°C | 4 | 10h | 65% | 6 | Great | View |
| November | 14°C | 4°C | 7 | 9h | 65% | 2 | Good | View |
| December | 8°C | -2°C | 8 | 8h | 65% | 2 | Good | View |
Data source: Open-Meteo ERA5 reanalysis archive, 30-year historical normals (1991-2020). Temperatures in Celsius. Sunshine hours are daily averages.
Avg: 20°C high, 8°C low
Mild conditions at 20°C (68°F), layers recommended. Occasional showers possible. Nights cool to 8°C (46°F).
Avg: 35°C high, 22°C low
Temperatures peak at 35°C (95°F), making midday heat intense. Rainfall is low. Nights cool to 22°C (72°F).
Avg: 22°C high, 12°C low
Comfortable warmth at 22°C (72°F), ideal for outdoor activities. Rainfall is low. Nights cool to 12°C (54°F).
Avg: 7°C high, -3°C low
Cool to cold at 7°C (45°F), warm clothing essential. Occasional showers possible. Nights cool to -3°C (27°F).
The least favorable time to visit Tehran is February and January. During this period, you can expect cold weather.
February
Challenges: cold weather
January
Challenges: cold weather
March
Challenges: less favorable weather conditions
Note: visiting during off-peak months often means lower prices, fewer crowds, and a more authentic experience.
Packing recommendations for visiting Tehran during the best travel months (May, October, September), when temperatures range from 15°C to 27°C:
Tehran has a semi-arid climate (Koppen classification: BSk). The warmest month is July with highs of 36°C, while the coldest month is January at just 6°C. Annual rainfall averages 346mm across approximately 64 rain days.
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 6 | 8 | 14 | 20 | 27 | 33 | 36 | 35 | 30 | 23 | 14 | 8 |
| Low °C | -5 | -3 | 2 | 8 | 14 | 20 | 24 | 23 | 19 | 12 | 4 | -2 |
| Rain Days | 8 | 9 | 9 | 9 | 5 | 2 | 1 | 1 | 1 | 4 | 7 | 8 |
| Rain mm | 41 | 47 | 61 | 48 | 21 | 6 | 4 | 4 | 4 | 21 | 46 | 43 |
| Sun h/day | 9 | 9 | 10 | 11 | 12 | 13 | 13 | 13 | 11 | 10 | 9 | 8 |
| Humidity % | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| UV Index | 2 | 2 | 6 | 6 | 9 | 9 | 9 | 9 | 6 | 6 | 2 | 2 |
Considering alternatives to Tehran? 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: