Tehrān monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Tehrān

Tehrān average temperature chart (Celsius) Tehrān average temperature chart (Fahrenheit)
Average monthly temperatures in Tehrān (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.3 7.8 13.4 19.9 25.9 32.1 34.9 33.6 29.7 22.1 14.6 7.9
°F 41.5 46 56.1 67.9 78.6 89.7 94.9 92.5 85.4 71.8 58.3 46.3

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Tehrān monthly rainfall chart (mm) Tehrān monthly rainfall chart (inches)
Average monthly rainfall in Tehrān (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 37 35 40 33 22 6 5 4 3 17 22 36
inches 1.5 1.4 1.6 1.3 0.9 0.2 0.2 0.1 0.1 0.6 0.9 1.4
Rainy days 10 9 11 11 10 3 2 2 2 6 7 9

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Tehrān

Tehrān average daily sunshine chart
Average daily sunshine Tehrān
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.9 6.7 6.9 7.7 9.6 12.1 11.7 11.3 10.7 8.6 7.3 6

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Tehrān average minimum / maximum temperatures (Celsius) Tehrān average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Tehrān (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -3.1 -1.4 3.4 9 14.1 18.8 22 20.9 17 10.8 4.8 -0.6
Max °C 5.5 8 13.7 20.2 26.2 32.4 35.3 34 30 22.4 14.9 8.2
Min °F 26.4 29.5 38 48.2 57.3 65.8 71.5 69.5 62.6 51.4 40.6 31
Max °F 34.2 37.9 47.3 58.3 68.2 78.1 83.5 81.3 74.3 61.9 49.6 38.8

Sea temperature

The graph below shows the average sea temperature.

Tehrān average sea temperature chart (Celsius) Tehrān average sea temperature chart (Fahrenheit)
Average sea temperature around Tehrān in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 13.1 11.7 11.9 14.7 19.8 24.7 27.3 28.3 26.8 23.7 19.8 15.9
°F 55.6 53 53.4 58.4 67.6 76.4 81.1 82.9 80.2 74.6 67.6 60.7

Wind speed

The graph below shows the average wind speed.

Tehrān average winspeed by month (km/h) Tehrān average winspeed by month (mph)
Average wind speed in Tehrān (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 6 8 10 11 11 10 9 8 7 7 6 6
mph 4 5 6 7 7 6 6 5 5 5 4 4

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Tehrān relative humidity averages
Average relative humidity in Tehrān
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 58% 49% 41% 36% 27% 26% 26% 27% 38% 49% 62%

Other monthly averages

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Tehrān weather stats

Tehrān weather statistics
Hottest month: July 34.9°C 94.8°F
Driest month: September 3mm 0.1ins
Sunniest month: September 10.7hrs
Coldest month: January 5.3°C 41.5°F
Wettest month: March 40mm 1.6ins
Warmest sea: August 28.3°C 82.9°F
Map showing location of Tehrān (35.69439, 51.42151)

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