Weather & climate · Tehran
Best Time to Visit Iran
October
The best time to visit Iran is October, when daytime highs in Tehran are around 24°C. April to May are also a good time to go. July is the warmest month (38°C by day), January the coldest (-2°C at night).
38°C
Warmest: July
-2°C
Coldest nights: January
308 mm
Rain per year
45 mm
Wettest: November
Iran weather by month
- Jan8°C-2°C33 mm
- Feb11°C-0°C34 mm
- Mar17°C4°C35 mm
- Apr22°C9°C38 mm
- May29°C15°C15 mm
- Jun35°C20°C6 mm
- Jul38°C23°C7 mm
- Aug36°C22°C8 mm
- Sep32°C18°C16 mm
- Oct24°C12°C36 mm
- Nov15°C4°C45 mm
- Dec10°C-0°C35 mm
Best time Good Less ideal
| Month | High | Low | Rain | Humidity | Cloud cover | Verdict |
|---|---|---|---|---|---|---|
| January | 8°C | -2°C | 33 mm | 58% | 53% | Fair |
| February | 11°C | -0°C | 34 mm | 55% | 54% | Fair |
| March | 17°C | 4°C | 35 mm | 50% | 57% | Fair |
| April | 22°C | 9°C | 38 mm | 48% | 58% | Good |
| May | 29°C | 15°C | 15 mm | 38% | 48% | Good |
| June | 35°C | 20°C | 6 mm | 25% | 33% | Very hot |
| July | 38°C | 23°C | 7 mm | 23% | 35% | Very hot |
| August | 36°C | 22°C | 8 mm | 23% | 27% | Very hot |
| September | 32°C | 18°C | 16 mm | 28% | 25% | Fair |
| October | 24°C | 12°C | 36 mm | 40% | 37% | Best time |
| November | 15°C | 4°C | 45 mm | 54% | 51% | Fair |
| December | 10°C | -0°C | 35 mm | 59% | 51% | Fair |
Data: NASA POWER (Prediction Of Worldwide Energy Resources) — 25-year climate averages 2001–2025, public domain, for the area around Tehran (35.7, 51.42). Satellite and model averages — local weather stations can differ by 1–2 °C, and mountains or coasts elsewhere in Iran have their own climate.
Frequently asked questions
When is the best time to visit Iran?
October. The best time to visit Iran is October, when daytime highs in Tehran are around 24°C. April to May are also a good time to go. July is the warmest month (38°C by day), January the coldest (-2°C at night).
What is the hottest month in Iran?
July, with average highs of 38°C in Tehran.
What is the coldest month in Iran?
January, when nights drop to about -2°C and days reach 8°C.
What is the rainiest month in Iran?
November with about 45 mm; June is the driest (6 mm).
When should I avoid visiting Iran?
February is the least comfortable month on average: 11°C by day and 34 mm of rain.
Best time to visit other countries in Asia
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Afghanistan
May and September
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Bahrain
March to April and November
-
Bangladesh
December to January
-
Bhutan
November to June
-
Brunei
February to March
-
Cambodia
November to January
-
China
April to May and September
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Hong Kong
November
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India
November to February
-
Indonesia
June to September
-
Iraq
March and November
-
Israel
April to May and October to November
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Japan
May to June
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Jordan
March to April and November
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Kazakhstan
June to August
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Kuwait
March and November
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Kyrgyzstan
May and September
-
Laos
December to January
-
Lebanon
May to June and October
-
Macau
October to November
-
Malaysia
January to December
-
Maldives
January to March
-
Mongolia
June to July
-
Myanmar
November to January
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Nepal
March
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North Korea
May to June and September
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Oman
December to February
-
Pakistan
March and November
-
Palestine
April to May and October to November
-
Philippines
January to March
-
Qatar
December to March
-
Saudi Arabia
February and November
-
Singapore
February
-
South Korea
June and September
-
Sri Lanka
January to February and June to August
-
Syria
May and October
-
Taiwan
April and October
-
Tajikistan
May and September
-
Thailand
November to January
-
Timor-Leste
May to September
-
Turkmenistan
April to May and September to October
-
Türkiye
June and September
-
United Arab Emirates
December to March
-
Uzbekistan
May and September
-
Vietnam
February to March and November
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Yemen
January to April and September to October
Best time Good · bars run January → December