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When to go · Climate guide
Iranwhen to go
Iran's national averages run from 12 °C in January to 37 °C in July, with rainfall between 4 mm in August and 47 mm in March and 6.8–9.9 hours of sun a day. Against the default preferences (under 2.7 mm of rain a day, at least 6 hours of sun), the strongest months are April, October and May. Its 31 regions span 16–32 °C in annual mean temperature, so the national figure hides a good deal.
- Capital
- Tehran
- Region
- Asia
- TZ
- Asia/Tehran
- Area
- 1,621,842 km²
Best months to visit
When Iran shines
Climate at a glance · 10-year ERA5
A decade of weather, in one page
— daytime high— overnight low▬ typical range
View data table
| Month | Average daytime high (°C) | Average overnight low (°C) | Typical low | Typical high |
|---|---|---|---|---|
| January | 12.2 | 0.8 | -3.6 | 16.4 |
| February | 14.3 | 2.8 | -2.3 | 20.2 |
| March | 19.5 | 7.7 | 3.2 | 25.1 |
| April | 25.0 | 12.6 | 7.8 | 30.2 |
| May | 30.6 | 17.5 | 14.1 | 35.2 |
| June | 35.8 | 22.0 | 19.3 | 38.2 |
| July | 37.3 | 24.3 | 22.7 | 38.9 |
| August | 35.9 | 22.5 | 19.5 | 38.5 |
| September | 33.1 | 18.8 | 15.6 | 36.1 |
| October | 26.8 | 13.0 | 8.6 | 30.7 |
| November | 19.1 | 6.9 | 2.0 | 24.6 |
| December | 14.2 | 2.7 | -1.1 | 18.8 |
View data table
| Month | Rainfall (mm) |
|---|---|
| January | 38 |
| February | 40 |
| March | 47 |
| April | 35 |
| May | 22 |
| June | 6 |
| July | 7 |
| August | 4 |
| September | 6 |
| October | 13 |
| November | 26 |
| December | 32 |
View data table
| Month | Sunshine hours (hr / day) |
|---|---|
| January | 7.3 |
| February | 7.9 |
| March | 8.2 |
| April | 8.8 |
| May | 9.4 |
| June | 9.9 |
| July | 9.3 |
| August | 9.4 |
| September | 8.9 |
| October | 8.4 |
| November | 7.3 |
| December | 6.8 |
— average▬ typical range
View data table
| Month | Average wind speed (km/h) | Typical low | Typical high |
|---|---|---|---|
| January | 8.4 | 6.1 | 11.8 |
| February | 9.1 | 6.5 | 13.2 |
| March | 10.2 | 7.3 | 14.4 |
| April | 10.1 | 7.8 | 13.4 |
| May | 10.3 | 8.3 | 12.8 |
| June | 11.2 | 9.2 | 13.5 |
| July | 11.9 | 9.8 | 14.2 |
| August | 11.3 | 9.2 | 13.7 |
| September | 9.6 | 8.0 | 11.6 |
| October | 8.4 | 6.8 | 10.8 |
| November | 7.6 | 5.9 | 10.5 |
| December | 7.5 | 5.7 | 11.0 |
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Snow depth
Snow depth for Iran is part of the Premium map and its district-level detail. See what Premium includes.
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Sea surface temperature
Sea surface temperature for Iran is part of the Premium map and its district-level detail. See what Premium includes.
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Heat index
Heat index for Iran is part of the Premium map and its district-level detail. See what Premium includes.
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Humidity
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What’s open · year round
Things to do in Iran
Nothing on this list closes for the season in Iran, but every one of them has a window worth aiming for.
- At its best
Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.
31 regions
Iran, taken apart
- Alborz3–32 °C yr
- Ardabil5–29 °C yr
- Bushehr20–42 °C yr
- Chaharmahal and Bakhtiari4–33 °C yr
- East Azerbaijan3–31 °C yr
- Fars14–38 °C yr
- Gilan8–27 °C yr
- Golestan11–34 °C yr
- Hamadan6–35 °C yr
- Hormozgan21–39 °C yr
- Ilam13–41 °C yr
- Isfahan11–38 °C yr
- Kerman16–39 °C yr
- Kermanshah9–38 °C yr
- Khuzestan17–45 °C yr
- Kohgiluyeh and Boyer-Ahmad11–37 °C yr
- Kurdistan4–35 °C yr
- Lorestan7–36 °C yr
- Markazi7–35 °C yr
- Mazandaran6–26 °C yr
- North Khorasan7–33 °C yr
- Qazvin5–32 °C yr
- Qom11–39 °C yr
- Razavi Khorasan9–36 °C yr
- Semnan11–38 °C yr
- Sistan and Baluchestan19–40 °C yr
- South Khorasan13–38 °C yr
- Tehran5–33 °C yr
- West Azerbaijan2–32 °C yr
- Yazd14–40 °C yr
- Zanjan4–32 °C yr
Safety · 6 governments
What the governments say about Iran
Combined advisory · most-cautious-wins
Do not travel
Highest level across 6 governments · Advisory last changed
See breakdown by countryHide breakdown
CA
Level 4Do not travel
Do not travel
DE
Level 4Do not travel
Do not travel
NL
Level 4Do not travel
Do not travel
UK
Level 4Do not travel
Do not travel
US
Level 4Do not travel
Do not travel
Month by month
A year in Iran, in order
- JanJanuary12.2°C · 38 mm · 7.3 hr/day
Around 12 °C with 38 mm of rain and 7.3 hours of sun a day.
Around 12 °C with 38 mm of rain and 7.3 hours of sun a day.
- FebFebruary14.3°C · 40 mm · 7.9 hr/day
Around 14 °C with 40 mm of rain and 7.9 hours of sun a day.
Around 14 °C with 40 mm of rain and 7.9 hours of sun a day.
- MarMarch19.5°C · 47 mm · 8.2 hr/day
Around 19 °C with 47 mm of rain and 8.2 hours of sun a day.
Around 19 °C with 47 mm of rain and 8.2 hours of sun a day.
- AprApril25.0°C · 35 mm · 8.8 hr/day
Around 25 °C with 35 mm of rain and 8.8 hours of sun a day.
Around 25 °C with 35 mm of rain and 8.8 hours of sun a day.
- MayMay30.6°C · 22 mm · 9.4 hr/day
Around 31 °C with 22 mm of rain and 9.4 hours of sun a day.
Around 31 °C with 22 mm of rain and 9.4 hours of sun a day.
- JunJune35.8°C · 6 mm · 9.9 hr/day
Around 36 °C with 6 mm of rain and 9.9 hours of sun a day.
Around 36 °C with 6 mm of rain and 9.9 hours of sun a day.
- JulJuly37.3°C · 7 mm · 9.3 hr/day
Around 37 °C with 7 mm of rain and 9.3 hours of sun a day.
Around 37 °C with 7 mm of rain and 9.3 hours of sun a day.
- AugAugust35.9°C · 4 mm · 9.4 hr/day
Around 36 °C with 4 mm of rain and 9.4 hours of sun a day.
Around 36 °C with 4 mm of rain and 9.4 hours of sun a day.
- SepSeptember33.1°C · 6 mm · 8.9 hr/day
Around 33 °C with 6 mm of rain and 8.9 hours of sun a day.
Around 33 °C with 6 mm of rain and 8.9 hours of sun a day.
- OctOctober26.8°C · 13 mm · 8.4 hr/day
Around 27 °C with 13 mm of rain and 8.4 hours of sun a day.
Around 27 °C with 13 mm of rain and 8.4 hours of sun a day.
- NovNovember19.1°C · 26 mm · 7.3 hr/day
Around 19 °C with 26 mm of rain and 7.3 hours of sun a day.
Around 19 °C with 26 mm of rain and 7.3 hours of sun a day.
- DecDecember14.2°C · 32 mm · 6.8 hr/day
Around 14 °C with 32 mm of rain and 6.8 hours of sun a day.
Around 14 °C with 32 mm of rain and 6.8 hours of sun a day.
Same climate · neighbouring countries
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