Tehran weather by month

Warmest month

July

37°C average high

Coolest month

January

1°C average low

Wettest month

March

37 mm of rain

Driest month

July

0 mm of rain

Average temperature and rainfall in Tehran by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

Month	Avg high	Avg low	Record low / high	Rainfall	Humidity	Wind
January	10°C	1°C	-5°C / 16°C	15 mm	49%	11 km/h
February	11°C	2°C	-7°C / 20°C	20 mm	50%	13 km/h
March	17°C	8°C	2°C / 26°C	37 mm	41%	13 km/h
April	22°C	12°C	4°C / 32°C	22 mm	33%	15 km/h
May	29°C	17°C	9°C / 36°C	15 mm	26%	16 km/h
June	35°C	23°C	13°C / 41°C	7 mm	19%	14 km/h
July	37°C	25°C	19°C / 42°C	0 mm	19%	12 km/h
August	36°C	24°C	17°C / 40°C	0 mm	20%	12 km/h
September	33°C	20°C	14°C / 38°C	0 mm	21%	12 km/h
October	25°C	14°C	4°C / 32°C	7 mm	34%	11 km/h
November	15°C	7°C	-8°C / 24°C	22 mm	48%	9 km/h
December	11°C	3°C	-4°C / 19°C	22 mm	53%	10 km/h

Frost and snow-likely months in Tehran

Nights in Tehran average 2°C or below in 1 month (January). No month combines freezing average lows with 10 mm or more of precipitation, so snow is uncommon. The coldest month is January with an average low of 1°C and a record low of -5°C.

January: average low 1°C, record low -5°C, 15 mm of precipitation

These records carry temperature and precipitation, not snowfall totals.

Best time to visit Tehran

The most comfortable time to visit Tehran is generally April to May and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around March, totalling about 167 mm a year.

Travellers who prefer heat should aim for July, when highs average 37°C. March is the month to avoid if rain would spoil your plans — it averages 37 mm, roughly 37× the rainfall of the driest month (July).

Tehran climate: your questions

Does Tehran get snow?

Rarely: nights dip to 2°C or below only in January, and the coldest month, January, averages a low of 1°C (record low -5°C), so snow is uncommon. Our records carry temperature and precipitation, not snowfall totals. What is falling now: Tehran weather today.

When is it going to snow in Tehran this month?

Tehran's winter months average lows of 3°C in December, 1°C in January and 2°C in February, with about 57 mm of precipitation across the three; 0 of them sit at or below 0°C, so snow is unlikely. The records hold no snowfall totals. The next 15 days: Tehran 10-day forecast.

When is the best time to visit Tehran?

April to May and October are the most comfortable months in Tehran, with highs near 25°C. July is the warmest month, averaging 37°C by day; March is the wettest, with 37 mm; and January is the coolest, with lows near 1°C. What it is doing today: Tehran weather today.

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Tehran forecast for what is happening now.