Average temperatures, rainfall and packing tips for Tehran, Iran in December
December in Tehran is typically cool, with average daytime highs around 10°C and nights near 0°C. It is usually the coldest month of the year in Tehran.
Rainfall is light in December: roughly 9 mm across the whole month.
If your dates are flexible, the most comfortable months in Tehran are usually April, May and October.
← Tehran weather tomorrow (live)
In December, Tehran averages a daytime high of about 10°C and a night-time low of around 0°C, based on recent historical data. That makes it the coldest month of the year there.
Rainfall is light in December: roughly 9 mm across the whole month.
December is a workable time to visit Tehran, with cool days - just pack accordingly. If your dates are flexible, the most comfortable months in Tehran are usually April, May and October.