Semnan weather in May
In May, Semnan sees average daytime highs of 28°C and overnight lows near 17°C, with 5 mm of rain across 1.3 wet days and about 13.9 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.
Highs climb over the month, from about 25°C in the first days to 30°C by the end. The sky is clear or mostly clear about 62% of the time in May, and the air most often feels dry.
Daylight stretches from about 13 h 24 min at the start of May to 14 h 12 min by month's end. Set against the rest of the year, May is Semnan's 6th-clearest and 3rd-windiest month. For the whole year in context, see Semnan's year-round climate.
- Daytime high
- 28°
- 5th warmest
- Overnight low
- 17°
- 8th coldest
- Rainfall
- 5 mm
- 1.3 wet days
- Daylight
- 13 h 54 min
- 4:57 AM – 6:49 PM
- Cloud cover
- 36%
- 6th clearest
- Wind
- 12 km/h
- 3rd windiest
- Solar energy
- 7.29 kWh/m²
- Travel score
- 7.6
- out of 10
Semnan is city in Semnan Province, Iran.
- Air quality
- Elevated
- PM10 48.4 µg/m³ · 2014
- Founded
- ~240 CE
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs climb over the month, from about 25°C in the first days to 30°C by the end.
A typical May day in Semnan reaches about 28°C in the afternoon and slips back to 17°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 32°C. Set against its neighbours, May runs about 6°C warmer than April and about 5°C cooler than June.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 31 | 31 | 31 |
| Avg low (°C) | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 14 |
| 2 | 25 | 14 |
| 3 | 25 | 14 |
| 4 | 25 | 15 |
| 5 | 26 | 15 |
| 6 | 26 | 15 |
| 7 | 26 | 15 |
| 8 | 26 | 15 |
| 9 | 26 | 16 |
| 10 | 27 | 16 |
| 11 | 27 | 16 |
| 12 | 27 | 16 |
| 13 | 27 | 16 |
| 14 | 27 | 16 |
| 15 | 28 | 17 |
| 16 | 28 | 17 |
| 17 | 28 | 17 |
| 18 | 28 | 17 |
| 19 | 28 | 17 |
| 20 | 29 | 17 |
| 21 | 29 | 17 |
| 22 | 29 | 18 |
| 23 | 29 | 18 |
| 24 | 29 | 18 |
| 25 | 30 | 18 |
| 26 | 30 | 18 |
| 27 | 30 | 18 |
| 28 | 30 | 19 |
| 29 | 31 | 19 |
| 30 | 31 | 19 |
| 31 | 31 | 19 |
How May really feels in Semnan
Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Semnan weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 8° / -0° | 12 | 3.2 | 1.7 | 9.9 | 1.6 |
| Feb | 10° / 1° | 14 | 2.9 | 1.4 | 10.7 | 2.9 |
| Mar | 16° / 6° | 18 | 3.9 | 0.9 | 11.7 | 5.7 |
| Apr | 22° / 11° | 13 | 2.7 | 0.1 | 12.9 | 8.0 |
| May | 28° / 17° | 5 | 1.3 | 0 | 13.9 | 7.6 |
| Jun | 33° / 21° | 1 | 0.3 | 0 | 14.4 | 4.5 |
| Jul | 36° / 24° | 1 | 0.3 | 0 | 14.2 | 2.9 |
| Aug | 35° / 23° | 1 | 0.3 | 0 | 13.3 | 3.8 |
| Sep | 30° / 18° | 2 | 0.5 | 0 | 12.2 | 6.8 |
| Oct | 23° / 12° | 5 | 1.1 | 0 | 11.1 | 8.8 |
| Nov | 15° / 6° | 11 | 3 | 0.2 | 10.1 | 5.4 |
| Dec | 9° / 1° | 10 | 3.1 | 0.9 | 9.6 | 2.3 |
Cloud cover in May
The sky is clear or mostly clear about 62% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 68 | 68 | 69 | 69 | 69 | 69 | 71 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 81 | 81 | 82 | 84 | 84 | 85 | 87 | 87 | 87 | 89 | 89 | 89 | 90 | 90 | 91 |
| Cloudier (%) | 32 | 32 | 31 | 31 | 31 | 31 | 29 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 19 | 19 | 18 | 16 | 16 | 15 | 13 | 13 | 13 | 11 | 11 | 11 | 10 | 10 | 9 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 68 | 32 |
| 2 | 68 | 32 |
| 3 | 69 | 31 |
| 4 | 69 | 31 |
| 5 | 69 | 31 |
| 6 | 69 | 31 |
| 7 | 71 | 29 |
| 8 | 71 | 29 |
| 9 | 72 | 28 |
| 10 | 73 | 27 |
| 11 | 74 | 26 |
| 12 | 75 | 25 |
| 13 | 76 | 24 |
| 14 | 77 | 23 |
| 15 | 78 | 22 |
| 16 | 79 | 21 |
| 17 | 81 | 19 |
| 18 | 81 | 19 |
| 19 | 82 | 18 |
| 20 | 84 | 16 |
| 21 | 84 | 16 |
| 22 | 85 | 15 |
| 23 | 87 | 13 |
| 24 | 87 | 13 |
| 25 | 87 | 13 |
| 26 | 89 | 11 |
| 27 | 89 | 11 |
| 28 | 89 | 11 |
| 29 | 90 | 10 |
| 30 | 90 | 10 |
| 31 | 91 | 9 |
Chance of precipitation in May
Semnan gets around 5 mm of rain over 1.3 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 4% and peaks near 5% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 |
| Rain chance (%) | |
|---|---|
| 1 | 5 |
| 2 | 5 |
| 3 | 5 |
| 4 | 5 |
| 5 | 5 |
| 6 | 5 |
| 7 | 4 |
| 8 | 4 |
| 9 | 4 |
| 10 | 4 |
| 11 | 4 |
| 12 | 4 |
| 13 | 4 |
| 14 | 4 |
| 15 | 4 |
| 16 | 4 |
| 17 | 4 |
| 18 | 4 |
| 19 | 4 |
| 20 | 4 |
| 21 | 4 |
| 22 | 4 |
| 23 | 4 |
| 24 | 4 |
| 25 | 4 |
| 26 | 4 |
| 27 | 4 |
| 28 | 4 |
| 29 | 4 |
| 30 | 3 |
| 31 | 3 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in May
Winds average 12 km/h in May.
Across May, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 12 | calm |
| 2 | 12 | calm |
| 3 | 12 | calm |
| 4 | 12 | calm |
| 5 | 12 | calm |
| 6 | 12 | calm |
| 7 | 12 | calm |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 12 | calm |
| 14 | 12 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | calm |
| 29 | 12 | calm |
| 30 | 12 | calm |
| 31 | 12 | calm |
Sunrise & sunset in May
Daylight runs from about 13 h 24 min at the start of May to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 48 minutes over May. Sunrise moves from 5:11 AM to 4:48 AM, and sunset from 6:36 PM to 7:00 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.4 | 13.5 | 13.5 | 13.5 | 13.6 | 13.6 | 13.6 | 13.6 | 13.7 | 13.7 | 13.7 | 13.8 | 13.8 | 13.8 | 13.8 | 13.9 | 13.9 | 13.9 | 13.9 | 14.0 | 14.0 | 14.0 | 14.0 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 |
| Sunrise (AM) | 5:11 | 5:10 | 5:09 | 5:08 | 5:07 | 5:06 | 5:05 | 5:04 | 5:03 | 5:02 | 5:01 | 5:00 | 4:59 | 4:58 | 4:57 | 4:57 | 4:56 | 4:55 | 4:54 | 4:54 | 4:53 | 4:52 | 4:52 | 4:51 | 4:50 | 4:50 | 4:49 | 4:49 | 4:48 | 4:48 | 4:48 |
| Sunset (PM) | 6:36 | 6:37 | 6:38 | 6:39 | 6:40 | 6:41 | 6:41 | 6:42 | 6:43 | 6:44 | 6:45 | 6:46 | 6:46 | 6:47 | 6:48 | 6:49 | 6:50 | 6:50 | 6:51 | 6:52 | 6:53 | 6:54 | 6:54 | 6:55 | 6:56 | 6:57 | 6:57 | 6:58 | 6:59 | 6:59 | 7:00 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.4 | 5:11 | 6:36 |
| 2 | 13.5 | 5:10 | 6:37 |
| 3 | 13.5 | 5:09 | 6:38 |
| 4 | 13.5 | 5:08 | 6:39 |
| 5 | 13.6 | 5:07 | 6:40 |
| 6 | 13.6 | 5:06 | 6:41 |
| 7 | 13.6 | 5:05 | 6:41 |
| 8 | 13.6 | 5:04 | 6:42 |
| 9 | 13.7 | 5:03 | 6:43 |
| 10 | 13.7 | 5:02 | 6:44 |
| 11 | 13.7 | 5:01 | 6:45 |
| 12 | 13.8 | 5:00 | 6:46 |
| 13 | 13.8 | 4:59 | 6:46 |
| 14 | 13.8 | 4:58 | 6:47 |
| 15 | 13.8 | 4:57 | 6:48 |
| 16 | 13.9 | 4:57 | 6:49 |
| 17 | 13.9 | 4:56 | 6:50 |
| 18 | 13.9 | 4:55 | 6:50 |
| 19 | 13.9 | 4:54 | 6:51 |
| 20 | 14.0 | 4:54 | 6:52 |
| 21 | 14.0 | 4:53 | 6:53 |
| 22 | 14.0 | 4:52 | 6:54 |
| 23 | 14.0 | 4:52 | 6:54 |
| 24 | 14.1 | 4:51 | 6:55 |
| 25 | 14.1 | 4:50 | 6:56 |
| 26 | 14.1 | 4:50 | 6:57 |
| 27 | 14.1 | 4:49 | 6:57 |
| 28 | 14.1 | 4:49 | 6:58 |
| 29 | 14.2 | 4:48 | 6:59 |
| 30 | 14.2 | 4:48 | 6:59 |
| 31 | 14.2 | 4:48 | 7:00 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 7.29 kWh/m².
For context, solar energy here swings from a low near 2.8 kWh/m² to a high of 7.71 kWh/m² in June across the year — May's 7.29 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.0 | 7.0 | 7.0 | 7.0 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.2 | 7.2 | 7.2 | 7.2 | 7.2 | 7.3 | 7.3 | 7.3 | 7.3 | 7.3 | 7.4 | 7.4 | 7.4 | 7.4 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.6 | 7.6 | 7.6 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 7.0 | Intense |
| 2 | 7.0 | Intense |
| 3 | 7.0 | Intense |
| 4 | 7.0 | Intense |
| 5 | 7.1 | Intense |
| 6 | 7.1 | Intense |
| 7 | 7.1 | Intense |
| 8 | 7.1 | Intense |
| 9 | 7.1 | Intense |
| 10 | 7.2 | Intense |
| 11 | 7.2 | Intense |
| 12 | 7.2 | Intense |
| 13 | 7.2 | Intense |
| 14 | 7.2 | Intense |
| 15 | 7.3 | Intense |
| 16 | 7.3 | Intense |
| 17 | 7.3 | Intense |
| 18 | 7.3 | Intense |
| 19 | 7.3 | Intense |
| 20 | 7.4 | Intense |
| 21 | 7.4 | Intense |
| 22 | 7.4 | Intense |
| 23 | 7.4 | Intense |
| 24 | 7.5 | Intense |
| 25 | 7.5 | Intense |
| 26 | 7.5 | Intense |
| 27 | 7.5 | Intense |
| 28 | 7.5 | Intense |
| 29 | 7.6 | Intense |
| 30 | 7.6 | Intense |
| 31 | 7.6 | Intense |
Is May a good time to visit Semnan?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is one of the better times to visit Semnan for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Semnan in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Semnan sees daytime highs around 28°C and nights near 17°C. Pack light clothes and sun protection.
UV index in Semnan in May
Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Semnan peaks around July 19 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 5 | 5 | 8 | 10 | 10 | 11 | 10 | 8 | 6 | 4 | 3 |
| Level | Moderate | High | Moderate | Very high | Very high | Very high | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 5 | High |
| Mar | 5 | Moderate |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 10 | Very high |
| Jul | 11 | Extreme |
| Aug | 10 | Extreme |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in Semnan in May
Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.
Air quality in Semnan is worst in December — around 46 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (August, 22 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 43 | 41 | 38 | 40 | 34 | 23 | 23 | 22 | 28 | 32 | 39 | 46 |
| Level | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 43 | Poor |
| Feb | 41 | Poor |
| Mar | 38 | Poor |
| Apr | 40 | Poor |
| May | 34 | Moderate |
| Jun | 23 | Moderate |
| Jul | 23 | Moderate |
| Aug | 22 | Moderate |
| Sep | 28 | Moderate |
| Oct | 32 | Moderate |
| Nov | 39 | Poor |
| Dec | 46 | Poor |
Where is Semnan?
Semnan sits at 35.6°N, 53.4°E, 1,148 m above sea level, in Iran. The nearest listed city is Mahdishahr, 15 km away.
Topography around Semnan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Semnan.
Within 3 km, the terrain around Semnan has only modest variations in elevation — a maximum elevation change of 144 m around an average of 1,149 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,254 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,375 m.
The land around Semnan is covered by artificial surfaces (59%) and bare terrain (20%) within 3 km, bare terrain (84%) within 16 km, and bare terrain (67%) and grassland (22%) within 80 km.
Iran travel facts
- Travel advisory
- Level 4
- Do Not Travel
- Power plugs
- Type C / F
- 220 V · 50 Hz
- Prices
- ≈ 352% of US
- price level, 2025
- GDP per capita
- $3,924
- 2025
- Happiness
- 5.2 / 10
- World Happiness, 2025
- Safe drinking water
- 94%
- of population, 2024
- Homicide rate
- 2.4
- per 100k, 2014
- Road deaths
- 21.5
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 492
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Semnan (35.5769°, 53.392°, elevation 1,148 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).