Tehran weather in January
January in Tehran: cold, a little rain, with reliable snow — a fair time to visit.
#12 of 12 months in Tehran · #428 of 604 destinations to visit in January · comfort 57/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Tehran climate normals — January
| Daytime high | 6°C / 43°F | 🧥 cold |
|---|---|---|
| Nighttime low | -5°C / 23°F | |
| Feels like (high) | 3°C / 37°F | |
| Rainfall | 46 mm / 1.8 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 61% | 💧 humid |
| Dew point | -7°C / 20°F | |
| Sunshine | 8.6 h/day | |
| Daylight | 10.1 h | |
| Wind | 9 km/h / 6 mph | |
| Snowfall | 19.8 cm / 7.8 in | |
| Air quality (US AQI) | 99 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tehran in January — FAQ
- Is January a good time to visit Tehran?
- January in Tehran: cold, a little rain, with reliable snow — a fair time to visit. It ranks #12 of 12 months for Tehran on SeasonMap's comfort score (57/100).
- What is the weather like in Tehran in January?
- In January, Tehran averages a daily high of 6°C and a low of -4.9°C, with about 45.9 mm of rain over roughly 7.2 rainy days.
- What is the air quality in Tehran in January?
- Tehran has a mean US Air Quality Index of about 99 in January.
- Does it snow in Tehran in January?
- Tehran sees roughly 19.8 cm of snowfall in January.