Semnan weather by month & the best time to visit
Iran · regional city · cold desert climate
The best time to visit Semnan is May — its sunniest month (Sunshine Score 97/100), with September and October close behind. Semnan averages about 3,285 hours of sunshine a year. Daytime highs around 30°C / 86°F and roughly 11 mm of rain in May.
When is the best time to visit Semnan?
For sunshine, the best time to visit Semnan is May, then September and October. The dullest month is January (0/100, 22 mm of rain). The full month-by-month picture is in the table below.
How sunny is Semnan?
Semnan is one of the sunniest places on Earth: about 3,285 hours of sunshine a year. 97 Sunshine Score points separate May (97) from January (0), so the month you pick matters. It ranks #29 of 42 destinations in Iran for annual sunshine, below the national median of 3,415 hours. The year's 178 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 | 0 | 8° / 46°F | -2° / 28°F | 22 mm | 2 |
| February | 24 | 11° / 52°F | 0° / 32°F | 25 mm | 3 |
| March | 71 | 17° / 63°F | 4° / 39°F | 23 mm | 5 |
| April | 95 | 23° / 73°F | 9° / 48°F | 22 mm | 7 |
| May | 97 | 30° / 86°F | 15° / 59°F | 11 mm | 9 |
| June | 68 | 35° / 95°F | 19° / 66°F | 6 mm | 10 |
| July | 49 | 37° / 99°F | 22° / 72°F | 5 mm | 10 |
| August | 59 | 36° / 97°F | 21° / 70°F | 5 mm | 9 |
| September | 97 | 32° / 90°F | 17° / 63°F | 8 mm | 8 |
| October | 96 | 25° / 77°F | 12° / 54°F | 14 mm | 5 |
| November | 55 | 15° / 59°F | 4° / 39°F | 19 mm | 3 |
| December | 16 | 10° / 50°F | 0° / 32°F | 18 mm | 2 |
Nearest destinations
Semnan: questions and answers
What kind of destination is Semnan?
Semnan is a regional city in Iran at 1,118 m elevation with a cold desert climate.
How many hours of sunshine does Semnan get a year?
Semnan gets about 3,285 hours of sunshine a year, at its best around May.
When is the best time to visit Semnan?
The sunniest time to visit Semnan is May, when the Sunshine Score peaks at 97/100 (with September and October close behind). Expect daytime highs around 30°C / 86°F.
What is the least sunny month in Semnan?
January is the least sunny month in Semnan, scoring 0/100 with about 22 mm of rain.
How strong is the sun in Semnan?
The typical midday UV index in Semnan 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.
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