Tehran weather in January
January is one of the least pleasant months in Tehran: highs of 8°C (47°F) and about 33 mm (1.3 in) of rain on average. Nights average -2°C (29°F) and cloud cover 53% (NASA POWER, 2001–2025 averages). It is the 6th driest month of the year and the coolest. Compared with December, it is cooler and about as wet; February brings highs of 11°C (52°F) and 34 mm (1.3 in) of rain.
Is January a good time to visit Tehran?
least pleasant month Weather score 49/100.
January is one of the least pleasant months for weather in Tehran. For better conditions, consider Apr–May, Sep–Oct.
Does it rain a lot in Tehran in January?
No, it is usually dry: about 33 mm (1.3 in) falls in an average January. It is the 6th driest month of the year.
How warm is Tehran in January?
Days average 8°C (47°F) and nights -2°C (29°F).
Tehran weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 8°C (47°F) | -2°C (29°F) | 33 mm | 53% | least pleasant |
| February | 11°C (52°F) | 0°C (31°F) | 34 mm | 54% | least pleasant |
| March | 17°C (63°F) | 4°C (40°F) | 35 mm | 57% | fair |
| April | 22°C (72°F) | 9°C (48°F) | 38 mm | 58% | best |
| May | 29°C (85°F) | 15°C (59°F) | 15 mm | 48% | best |
| June | 35°C (96°F) | 20°C (69°F) | 6 mm | 33% | fair |
| July | 38°C (100°F) | 23°C (74°F) | 7 mm | 35% | fair |
| August | 36°C (97°F) | 22°C (72°F) | 8 mm | 27% | fair |
| September | 32°C (89°F) | 18°C (65°F) | 16 mm | 25% | best |
| October | 24°C (76°F) | 12°C (54°F) | 36 mm | 37% | best |
| November | 15°C (59°F) | 4°C (40°F) | 45 mm | 51% | fair |
| December | 10°C (50°F) | 0°C (32°F) | 35 mm | 51% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months