Karaj weather in December
December is one of the least pleasant months in Karaj: highs of 0°C (33°F) and about 54 mm (2.1 in) of rain on average. Nights average -8°C (17°F) and cloud cover 46% (NASA POWER, 2001–2025 averages). It is the 3rd wettest month of the year and the 3rd coolest. Compared with November, it is cooler and drier; January brings highs of -2°C (29°F) and 47 mm (1.9 in) of rain.
Is December a good time to visit Karaj?
least pleasant month Weather score 42/100.
December is one of the least pleasant months for weather in Karaj. For better conditions, consider May–Sep.
Does it rain a lot in Karaj in December?
No, it is usually dry: about 54 mm (2.1 in) falls in an average December. It is the 3rd wettest month of the year.
How warm is Karaj in December?
Days average 0°C (33°F) and nights -8°C (17°F).
Karaj weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | -2°C (29°F) | -11°C (12°F) | 47 mm | 52% | least pleasant |
| February | 0°C (32°F) | -9°C (16°F) | 48 mm | 53% | least pleasant |
| March | 6°C (42°F) | -4°C (25°F) | 47 mm | 56% | least pleasant |
| April | 11°C (53°F) | 1°C (33°F) | 45 mm | 57% | fair |
| May | 18°C (64°F) | 6°C (42°F) | 17 mm | 46% | best |
| June | 24°C (76°F) | 11°C (52°F) | 12 mm | 29% | best |
| July | 27°C (80°F) | 14°C (58°F) | 17 mm | 32% | best |
| August | 26°C (79°F) | 13°C (56°F) | 20 mm | 24% | best |
| September | 21°C (70°F) | 9°C (48°F) | 44 mm | 23% | best |
| October | 14°C (57°F) | 4°C (38°F) | 77 mm | 36% | fair |
| November | 5°C (41°F) | -4°C (25°F) | 80 mm | 47% | least pleasant |
| December | 0°C (33°F) | -8°C (17°F) | 54 mm | 46% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months