Best Time to Visit Semnan
Best time: Sep, May, Apr, Jun.
Jul is warmest (37.7°C high); Mar is rainiest (34 mm).
Semnan weather by month
| Month | High °C | Low °C | Rain mm | Sun hrs |
|---|---|---|---|---|
| Jan | 8.4 | -0.6 | 33 | 4.3 |
| Feb | 11.1 | 1 | 29 | 5.6 |
| Mar | 16.3 | 5.5 | 34 | 6.7 |
| Apr | 24.1 | 12.2 | 21 | 8.2 |
| May | 29.3 | 17.2 | 18 | 9.8 |
| Jun | 35.2 | 22.7 | 7 | 11.4 |
| Jul | 37.7 | 25.4 | 4 | 11.3 |
| Aug | 36.6 | 24.2 | 6 | 10.6 |
| Sep | 32.5 | 19.8 | 8 | 9.1 |
| Oct | 25 | 13.1 | 23 | 6.8 |
| Nov | 17.4 | 6.7 | 24 | 5 |
| Dec | 10.5 | 1.4 | 28 | 4.1 |
Average high temperature
Best months by activity
Overall: SepMayAprJun
Beaches: JunAugJulSep
Hiking: AprOctNovMar
Sightseeing: MayAprOctSep
Semnan quick facts
What to pack
Hot months (Jun, Jul, Aug): light clothes, sunscreen, hat.
Cold months (Jan, Feb, Dec): warm layers and a coat.
Frequently asked questions
When is the best time to visit Semnan?
Sep, May, Apr, Jun.
What is the rainiest month?
Mar, about 34 mm.
What is the warmest month?
Jul, with average highs of 37.7°C.
Where to stay
See Semnan hotels · Book Semnan tours & activities
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Climate data: Open-Meteo Historical (ERA5), 1991–2020 climate normals.
Licensed under CC BY 4.0.
Open-Meteo.