Weather in Tehran in January 2025
- January is usually the coldest month of the year in Tehran;
Average weather
Average temperature in Tehran in January
The temperature in January is +7°C on average, with a range between a maximum of +10°C during the day and a minimum of -4°C at night.
The average maximum temperature goes down 7% by the end of the month, compared with the beginning of the month, from +8°C to +7°C.
Is Tehran warm or cold in January?
Tehran is typically cool in January.
Maximum temperatures go down compared to the previous month from +8°C to +6°C. The minimum temperature also goes down from -1°C to -4°C.
Pack a sweater and a jacket as there will be cooler temperatures.
January is the coldest month in Tehran, here is the comparison with other months:
Climate in Tehran in January
| December | January | February | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +8°C | +6°C | +8°C | ||||
| Min. temperature | ||||||
| -20°C | -19°C | -20°C | ||||
| Max. temperature | ||||||
| +20°C | +16°C | +21°C | ||||
| Rainfall | ||||||
| 28 mm | 18 mm | 25 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 2 m/s | ||||
| Humidity | ||||||
| 61% | 60% | 55% | ||||
| Air pressure | ||||||
| 1020 HPa | 1019 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 12 | 13 | 10 | ||||
| Cloudy days | ||||||
| 9 | 8 | 6 | ||||
| Rainy days | ||||||
| 6 | 4 | 6 | ||||
| Snowy days | ||||||
| 4 | 7 | 5 | ||||
January weather is still as good as in December. It’s getting colder in January. From +8°C in the day, the average maximum temperature lowers to +6°C. As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 28 mm to 18 mm. It feels drier, as humidity decreases from 61% to 60%. The average wind speed doesn’t change much during January, staying around 1 m/s. The good news is there are likely to be more sunny days in January, from 12 to 13.
February brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Tehran is gradually increasing during January, going from 2 m/s to 3 m/s over the course of the month.
Rain
Snow
January is one of the snowiest months in Tehran.
Here’s how January is compared with other months in the amount of snow, total mm:
How was the weather last January in Tehran?
Climate Change over Years
The climate in Tehran in January has not changed much over the last 43 years.
The average temperature was the lowest in 1982 (+18°C) and the highest in 2021 (+24°C). The driest year was 2008 with only 117 mm of rainfall, and the wettest year was 2020 with 366 mm.
FAQ
Is January a good time to visit Tehran?
Can you sunbathe in Tehran in January?
Is Tehran rainy in January?
Is it sunny in Tehran in January?
Other cities in Iran
Monthly weather in Tehran
Source of the data
For this page, we’ve looked at the typical weather in Tehran, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.