Tehran weather in December
December in Tehran: cold, a little rain, with reliable snow — a good time to visit.
#10 of 12 months in Tehran · #378 of 604 destinations to visit in December · comfort 65/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Tehran climate normals — December
| Daytime high | 9°C / 48°F | 🧥 cold |
|---|---|---|
| Nighttime low | -2°C / 29°F | |
| Feels like (high) | 6°C / 43°F | |
| Rainfall | 33 mm / 1.3 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 62% | 💧 humid |
| Dew point | -3°C / 27°F | |
| Sunshine | 8.1 h/day | |
| Daylight | 9.8 h | |
| Wind | 8 km/h / 5 mph | |
| Snowfall | 11.1 cm / 4.4 in | |
| Air quality (US AQI) | 100 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tehran in December — FAQ
- Is December a good time to visit Tehran?
- December in Tehran: cold, a little rain, with reliable snow — a good time to visit. It ranks #10 of 12 months for Tehran on SeasonMap's comfort score (65/100).
- What is the weather like in Tehran in December?
- In December, Tehran averages a daily high of 8.9°C and a low of -1.6°C, with about 32.7 mm of rain over roughly 7.8 rainy days.
- What is the air quality in Tehran in December?
- Tehran has a mean US Air Quality Index of about 100 in December.
- Does it snow in Tehran in December?
- Tehran sees roughly 11.1 cm of snowfall in December.