The climate in Tehrān during December can be summarized as cool and reasonably dry.
December is in the winter in Tehrān and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 8°C (47°F), whilst at night -1°C (31°F) is normal.
|Daytime temperature||8.2°C 46.7°F|
|Nightly temperature||-0.6°C 31°F|
|Average temperature||3.8°C 38.8°F|
|Daily sunshine||6 hrs|
|Avg rainfall||36 mm 1.4 ins|
|Rainy days||9 days|
|Sea temperature||15.9°C 60.7°F|
|Windspeed||5.8kph 4 mph|
On average December is the 3rd wettest month of the year in Tehrān with around 36mm 1.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Tehrān in December 2023.
|Hottest month:||July||34.9°C 94.8°F|
|Driest month:||September||3mm 0.1ins|
|Coldest month:||January||5.3°C 41.5°F|
|Wettest month:||March||40mm 1.6ins|