Best time to visit Tehran
The best time to visit Tehran is May and September–October, judged on twenty years of weather records and the events worth going for.
Tehran, Tehran, Iran
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 2.1 °C / 36 °F | -6.9 °C / 20 °F | 41 mm / 1.6 in | neither best nor good |
| February | 3.5 °C / 38 °F | -5 °C / 23 °F | 51 mm / 2 in | neither best nor good |
| March | 9.7 °C / 49 °F | 1.3 °C / 34 °F | 57 mm / 2.2 in | neither best nor good |
| April | 15.9 °C / 61 °F | 7.2 °C / 45 °F | 44 mm / 1.7 in | good month |
| May | 22.6 °C / 73 °F | 13.3 °C / 56 °F | 18 mm / 0.7 in | best month |
| June | 29.2 °C / 85 °F | 19.2 °C / 67 °F | 5 mm / 0.2 in | good month |
| July | 31.8 °C / 89 °F | 22.4 °C / 72 °F | 3 mm / 0.1 in | neither best nor good |
| August | 30.3 °C / 87 °F | 20.8 °C / 69 °F | 4 mm / 0.2 in | good month |
| September | 26.2 °C / 79 °F | 16.9 °C / 62 °F | 4 mm / 0.2 in | best month |
| October | 19.1 °C / 66 °F | 10.5 °C / 51 °F | 22 mm / 0.9 in | best month |
| November | 10.1 °C / 50 °F | 1.8 °C / 35 °F | 40 mm / 1.6 in | neither best nor good |
| December | 4.6 °C / 40 °F | -4.4 °C / 24 °F | 36 mm / 1.4 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: good
- MMay: best
- JJune: good
- JJuly: neither
- AAugust: good
- SSeptember: best
- OOctober: best
- NNovember: neither
- DDecember: neither
- Best
- May, September–October
- Good
- April, June, August
Spring (April-May) and autumn (September-October) are excellent, mild, dry and sunny; summer highs turn uncomfortably hot (peaking in July), and December-February plus the cooler shoulder months of March and November are too chilly and dull for exploring.
Why these months
April · good
In its favour: precipitation 44 mm / 1.7 in, share of daylight that is sunny 90%, feels like (high) 14 °C / 57 °F, average daily high 15.9 °C / 61 °F, days with heavy rain 1.1 days, relative humidity 47%, average daily low 7.2 °C / 45 °F.
Against: wet days 8.2 days, share of rain falling in the daytime 50%.
May · best
In its favour: feels like (high) 20.5 °C / 69 °F, average daily high 22.6 °C / 73 °F, precipitation 18 mm / 0.7 in, share of daylight that is sunny 87%, wet days 4.8 days, days with heavy rain 0.2 days, average daily low 13.3 °C / 56 °F, relative humidity 36%.
June · good
In its favour: feels like (high) 27 °C / 81 °F, precipitation 5 mm / 0.2 in, share of daylight that is sunny 89%, wet days 1.4 days, days with heavy rain 0 days, average daily low 19.2 °C / 67 °F.
Against: average daily high 29.2 °C / 85 °F, relative humidity 24%.
Also on: Ashura mourning theatrical plays.
Watch out for: Ashura-Tasua closures.
August · good
In its favour: precipitation 4 mm / 0.2 in, share of daylight that is sunny 96%, wet days 0.6 days, days with heavy rain 0.1 days, average daily low 20.8 °C / 69 °F.
Against: average daily high 30.3 °C / 87 °F, feels like (high) 28.5 °C / 83 °F, relative humidity 25%.
September · best
In its favour: feels like (high) 23.8 °C / 75 °F, precipitation 4 mm / 0.2 in, share of daylight that is sunny 92%, average daily high 26.2 °C / 79 °F, wet days 0.9 days, days with heavy rain 0.1 days, average daily low 16.9 °C / 62 °F, relative humidity 27%.
October · best
In its favour: feels like (high) 16.2 °C / 61 °F, average daily high 19.1 °C / 66 °F, precipitation 22 mm / 0.9 in, share of daylight that is sunny 92%, wet days 4.1 days, days with heavy rain 0.5 days, average daily low 10.5 °C / 51 °F, relative humidity 39%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: good
- MMay: best
- JJune: good
- JJuly: neither
- AAugust: neither
- SSeptember: best
- OOctober: best
- NNovember: neither
- DDecember: neither
- Best
- May, September–October
- Good
- April, June
Cool, dry spring and autumn (April-May, September-October) give the best trekking conditions; July-August turn too hot for exertion, and November-March bring cold temperatures, snow underfoot and shorter days.
Why these months
April · good
In its favour: average daily high 15.9 °C / 61 °F, precipitation 44 mm / 1.7 in, days with heavy rain 1.1 days, feels like (high) 14 °C / 57 °F, average daily low 7.2 °C / 45 °F, share of daylight that is sunny 90%, daylight per day 13.1 h, wind (daily max) 11 km/h / 7 mph.
Against: wet days 8.2 days, share of rain falling in the daytime 50%.
May · best
In its favour: average daily high 22.6 °C / 73 °F, precipitation 18 mm / 0.7 in, wet days 4.8 days, days with heavy rain 0.2 days, feels like (high) 20.5 °C / 69 °F, average daily low 13.3 °C / 56 °F, share of daylight that is sunny 87%, daylight per day 14.1 h, wind (daily max) 12 km/h / 8 mph.
June · good
In its favour: precipitation 5 mm / 0.2 in, wet days 1.4 days, days with heavy rain 0 days, share of daylight that is sunny 89%, daylight per day 14.5 h, wind (daily max) 13 km/h / 8 mph.
Against: average daily high 29.2 °C / 85 °F, feels like (high) 27 °C / 81 °F, average daily low 19.2 °C / 67 °F.
Also on: Ashura mourning theatrical plays.
Watch out for: Ashura-Tasua closures.
September · best
In its favour: precipitation 4 mm / 0.2 in, wet days 0.9 days, days with heavy rain 0.1 days, share of daylight that is sunny 92%, daylight per day 12.4 h, feels like (high) 23.8 °C / 75 °F, wind (daily max) 12 km/h / 7 mph, average daily low 16.9 °C / 62 °F.
Against: average daily high 26.2 °C / 79 °F.
October · best
In its favour: average daily high 19.1 °C / 66 °F, precipitation 22 mm / 0.9 in, wet days 4.1 days, days with heavy rain 0.5 days, feels like (high) 16.2 °C / 61 °F, average daily low 10.5 °C / 51 °F, share of daylight that is sunny 92%, daylight per day 11.3 h, wind (daily max) 10 km/h / 6 mph.
Skiing and snow
Wants cold and snowfall; sunshine barely matters.
- JJanuary: best
- FFebruary: best
- MMarch: good
- AApril: neither
- MMay: neither
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: neither
- NNovember: good
- DDecember: best
- Best
- December–February
- Good
- March, November
December-February deliver consistently cold temperatures with regular snowfall; March and November are milder shoulder months with lighter snow, while April-October see little or no snow and temperatures too warm for skiing.
Why these months
January · best
In its favour: average daily high 2.1 °C / 36 °F, days with snow 10.2 days, snowfall 19 cm / 7.5 in, average daily low -6.9 °C / 20 °F, wind (daily max) 9 km/h / 5 mph, daylight per day 10.1 h.
February · best
In its favour: days with snow 10.9 days, snowfall 19 cm / 7.5 in, average daily high 3.5 °C / 38 °F, average daily low -5 °C / 23 °F, wind (daily max) 9 km/h / 6 mph, daylight per day 10.9 h.
March · good
In its favour: days with snow 8.1 days, wind (daily max) 9 km/h / 6 mph, daylight per day 12 h.
Against: average daily high 9.7 °C / 49 °F, snowfall 13 cm / 5 in, average daily low 1.3 °C / 34 °F.
Also on: Chahar-shanbe Suri (fire-jumping festival).
November · good
In its favour: days with snow 5.8 days, wind (daily max) 8 km/h / 5 mph, daylight per day 10.3 h.
Against: average daily high 10.1 °C / 50 °F, snowfall 7 cm / 2.8 in, average daily low 1.8 °C / 35 °F.
December · best
In its favour: days with snow 9 days, average daily low -4.4 °C / 24 °F, wind (daily max) 8 km/h / 5 mph, daylight per day 9.8 h.
Against: snowfall 13 cm / 5.3 in, average daily high 4.6 °C / 40 °F.
Also on: Shab-e Yalda family gatherings.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Khor, 34 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | -1.4 °C | 0.5 °C | 7.3 °C | 14 °C | 20.5 °C | 27 °C | 30 °C | 28.5 °C | 23.8 °C | 16.2 °C | 7.2 °C | 1.4 °C |
| Days with heavy rain | 0.8 days | 1.4 days | 1.5 days | 1.1 days | 0.2 days | 0 days | 0.1 days | 0.1 days | 0.1 days | 0.5 days | 1.1 days | 0.8 days |
| Time rain usually falls | 10 pm | 4 am | 2 pm | 4 pm | 4 pm | 10 am | 12 pm | 2 pm | 4 pm | 12 pm | 10 am | 9 pm |
| Sunshine per day | 8.9 h | 9.6 h | 10.4 h | 11.7 h | 12.3 h | 13 h | 13.1 h | 12.9 h | 11.4 h | 10.4 h | 8.8 h | 8.2 h |
| Relative humidity | 58% | 59% | 53% | 47% | 36% | 24% | 24% | 25% | 27% | 39% | 57% | 59% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 33.6 µg/m³ | 27.6 µg/m³ | 26.8 µg/m³ | 21.8 µg/m³ | 19 µg/m³ | 18.6 µg/m³ | 19.7 µg/m³ | 18.1 µg/m³ | 21.5 µg/m³ | 26.7 µg/m³ | 32 µg/m³ | 33.8 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 62.6 µg/m³ | 50.5 µg/m³ | 45.9 µg/m³ | 35.4 µg/m³ | 29.6 µg/m³ | 29.1 µg/m³ | 28.9 µg/m³ | 29 µg/m³ | 37.3 µg/m³ | 46.8 µg/m³ | 59.7 µg/m³ | 62.9 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.
Events and seasons
What the weather records cannot show. A major event can lift a month to good or best. The warnings are there to help you plan, and never count against a month.
Reasons to go
- Chahar-shanbe Suri (fire-jumping festival)
March, dates vary from year to year
- Ashura mourning theatrical plays
June, dates vary from year to year
- Shab-e Yalda family gatherings
December
Worth knowing before you go
- Ashura-Tasua closures
June, dates vary from year to year
World Heritage sites nearby
UNESCO World Heritage sites within 25 km, nearest first.
- Golestan Palace
2 km away
- Trans-Iranian railway
5 km away