Semnan Weather in September
Semnan in September
The short of it: Semnan in September averages a high of 33 °C (92 °F) and a low of 21 °C (70 °F), with 11 mm (0.43 in) of rain and about 12 h 21 min of daylight. Rated 3 of 5 for a visit; the best months are April and October. Source: TerraClimate climate normals, 1991–2020.
Average high 33° · low 21° · rain 11 mm · daylight 12 h 21 min
✦✦✦ Fair for a visit · best months: April & October
Thirty years of records give Semnan an average September high of 33°, a low of 21° and some 11 mm of rain. Days run hot, near 33° in the afternoon; ride early and rest at noon. Rain is scarce, about 11 mm, the 9th wettest month.
The sun is up for about 12 h 21 min in mid-September, 69 minutes less than a month before.
For the traveller: pack linen, a wide hat and water. The Almanac rates September 3 of 5 for a visit; the finest months here are April and October.
Against its neighbours, Semnan runs warmer than most and wetter than most in September. Mahdishahr, 15 km to the NNW, is 5° cooler by day.
September in Semnan, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 9th wettest of 12
- Versus August
- 4° colder, 5.0 mm more rain
- Versus October
- 7° warmer
- Day–night spread
- 12°
- Snow season
- seldom any
- Daylight, mid-month
- 12 h 21 min
- Average wind
- 8 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| MahdishahrSemnan | 15 km NNW | 29° | 17° | 5.0 mm |
| SorkhehSemnan | 20 km SW | 33° | 21° | 8.0 mm |
| LāsjerdSemnan | 34 km SW | 33° | 21° | 6.0 mm |
| FīrūzkūhTehran | 60 km WNW | 27° | 15° | 4.0 mm |
| Pol-e SefīdMāzandarān | 67 km NNW | 29° | 20° | 31 mm |
| ShahrābādTehran | 68 km WNW | 27° | 14° | 4.0 mm |
| ĀlāshtMāzandarān | 74 km NW | 27° | 17° | 14 mm |
| KīāsarMāzandarān | 75 km N | 28° | 18° | 15 mm |