Weatheo

Tehran Weather by Month

Average temperatures, rainfall and humidity for Tehran, Iran, month by month, built from OpenWeather’s historical records. Use it to see what a typical Tehran month looks like before you travel — then check the live Tehran forecast for the days ahead.

Warmest month

July

37°C average high

Coolest month

January

1°C average low

Wettest month

March

40 mm of rain

Driest month

July

1 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.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January10°C1°C-10°C / 17°C
17 mm
51%11 km/h
February12°C3°C-8°C / 24°C
20 mm
48%12 km/h
March17°C7°C-3°C / 30°C
40 mm
39%14 km/h
April23°C12°C-2°C / 33°C
24 mm
33%14 km/h
May29°C17°C6°C / 37°C
12 mm
27%15 km/h
June35°C23°C13°C / 42°C
4 mm
19%14 km/h
July37°C25°C16°C / 42°C
1 mm
20%12 km/h
August36°C24°C15°C / 42°C
1 mm
20%12 km/h
September32°C20°C9°C / 38°C
2 mm
23%11 km/h
October24°C14°C1°C / 33°C
9 mm
35%11 km/h
November16°C7°C-8°C / 26°C
24 mm
48%9 km/h
December11°C3°C-7°C / 19°C
19 mm
53%9 km/h

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 175 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 40 mm, roughly 40× the rainfall of the driest month (July).

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

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