Tehran weather by month & the best time to visit
Iran · major city break · semi-arid climate
The best time to visit Tehran is May — its sunniest month (Sunshine Score 95/100), with October and April close behind. Tehran averages about 3,219 hours of sunshine a year. Daytime highs around 30°C / 86°F and roughly 15 mm of rain in May.
When is the best time to visit Tehran?
For sunshine, the best time to visit Tehran is May, then October and April. The dullest month is January (15/100, 33 mm of rain). The full month-by-month picture is in the table below.
How sunny is Tehran?
Tehran is one of the sunniest places on Earth: about 3,219 hours of sunshine a year. 80 Sunshine Score points separate May (95) from January (15), so the month you pick matters. It ranks #34 of 42 destinations in Iran for annual sunshine, below the national median of 3,415 hours. The year's 308 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 15 | 10° / 50°F | -1° / 30°F | 33 mm | 2 |
| February | 31 | 12° / 54°F | 1° / 34°F | 34 mm | 3 |
| March | 76 | 18° / 64°F | 5° / 41°F | 35 mm | 5 |
| April | 91 | 24° / 75°F | 10° / 50°F | 38 mm | 6 |
| May | 95 | 30° / 86°F | 16° / 61°F | 15 mm | 8 |
| June | 49 | 37° / 99°F | 22° / 72°F | 6 mm | 10 |
| July | 29 | 39° / 102°F | 25° / 77°F | 7 mm | 10 |
| August | 48 | 37° / 99°F | 24° / 75°F | 8 mm | 10 |
| September | 86 | 33° / 91°F | 19° / 66°F | 16 mm | 8 |
| October | 92 | 25° / 77°F | 13° / 55°F | 36 mm | 5 |
| November | 60 | 16° / 61°F | 6° / 43°F | 45 mm | 3 |
| December | 23 | 11° / 52°F | 1° / 34°F | 35 mm | 2 |
Nearest destinations
Head-to-head
How Tehran compares month by month: Tehran vs Isfahan · Tehran vs Rasht · Tehran vs Sari · all comparisons
Tehran: questions and answers
What kind of destination is Tehran?
Tehran is a major city break in Iran at 996 m elevation with a semi-arid climate.
How many hours of sunshine does Tehran get a year?
Tehran gets about 3,219 hours of sunshine a year, at its best around May.
When is the best time to visit Tehran?
The sunniest time to visit Tehran is May, when the Sunshine Score peaks at 95/100 (with October and April close behind). Expect daytime highs around 30°C / 86°F.
What is the least sunny month in Tehran?
January is the least sunny month in Tehran, scoring 15/100 with about 33 mm of rain.
How strong is the sun in Tehran?
The typical midday UV index in Tehran peaks around 10 (very high) in June, easing to about 2 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
Put the Tehran sunshine badge on your site
A compact badge showing Tehran's sunshine at a glance — free to embed under CC BY 4.0. Paste this wherever you'd like it to appear:
Live preview — this is exactly what your readers see: