Iran climate

World Climates covers 82 places in Iran. By annual mean temperature, the warmest is Bandar Abbas (28 °C83 °F) and the coolest is Zanjan (11 °C51 °F). The wettest is Rasht with 1,019 mm40 in of precipitation per year, the driest Yazd with 56 mm2.2 in.

The most common climate types (Köppen classification computed from these averages) are cold semi-arid (BSk, 24 places), hot-summer Mediterranean (Csa, 19 places), hot desert (BWh, 17 places) and hot semi-arid (BSh, 12 places).

The highest monthly average high is in Ahvaz (49 °C119 °F in July); the lowest monthly average low is in Zanjan (−6 °C20 °F in January).

Across the places in Iran, the months that most often rank as the most comfortable are April, May and October (57, 48 and 63 of 82 places respectively).

Temperature and rainfall across Iran

Annual mean temperatures in Iran range from 11 °C51 °F to 28 °C83 °F. The typical place (the median of all 82) has a year average of 17 °C62 °F. Annual precipitation ranges from 56 mm2.2 in to 1,019 mm40 in. The median place receives about 272 mm11 in in an average year.

In 52 places of 82, the coldest month has an average low below 0 °C (32 °F). In 82 places, the warmest month has an average high above 30 °C (86 °F). 37 places get less than 250 mm (10 in) of precipitation a year, which is very dry. None gets more than 2,000 mm (79 in) a year.

Averaged over all 82 places, July is the warmest month, with a mean of 30 °C86 °F. January is the coldest, with 5 °C41 °F. The wettest month on average is November (41 mm1.6 in). The driest is July (6 mm0.2 in). Single places can differ a lot from this average, so check the page of each city.

The table below lists the places sorted by population. The largest ones covered here are Tehran, Mashhad and Isfahan. Each city page has a chart and a table for every month. It also shows the best time to visit and what to pack. The figures are 25-year averages for 2001–2025 from NASA POWER. They describe grid cells of roughly 50–70 km, not single weather stations.

Frequently asked questions

Which is the warmest place in Iran?

By annual mean temperature, the warmest place in Iran is Bandar Abbas at 28 °C83 °F. The coolest is Zanjan at 11 °C51 °F.

Where does it rain the most in Iran?

Rasht gets the most precipitation, 1,019 mm40 in in an average year. The driest place is Yazd with 56 mm2.2 in.

How many places in Iran does this site cover?

World Climates has climate data for 82 places in Iran. Each one has a page with monthly averages for temperature, rainfall, humidity and daylight.

When is the best time to visit Iran?

It depends on the place. Across Iran, the months that most often rank as the most comfortable are April, May and October. Check the page of each city for its own best months.