Semnan weather in July

In July, Semnan sees average daytime highs of 36°C and overnight lows near 24°C, with 1 mm of rain across 0.3 wet days and about 14.2 hours of daylight. It is the 1st-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 36°C through the month. The sky is clear or mostly clear about 96% of the time in July, and the air most often feels dry.

Daylight stretches from about 14 h 24 min at the start of July to 13 h 48 min by month's end. Set against the rest of the year, July is Semnan's 3rd-clearest and 1st-windiest month. For the whole year in context, see Semnan's year-round climate.

Daytime high
36°
1st warmest
Overnight low
24°
12th coldest
Rainfall
1 mm
0.3 wet days
Daylight
14 h 12 min
4:56 AM – 7:08 PM
Cloud cover
11%
3rd clearest
Wind
14 km/h
1st windiest
Solar energy
7.47 kWh/m²
Travel score
2.9
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 July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 36°C through the month.

A typical July day in Semnan reaches about 36°C in the afternoon and slips back to 24°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 39°C. Set against its neighbours, July runs about 3°C warmer than June and about 1°C warmer than August.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13523
23623
33624
43624
53624
63624
73624
83624
93624
103624
113624
123624
133624
143624
153624
163624
173624
183624
193624
203624
213624
223624
233624
243624
253624
263624
273624
283624
293624
303624
313624

How July really feels in Semnan

Once humidity and wind are folded in, July averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Semnan weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°123.21.79.91.6
Feb10° / 142.91.410.72.9
Mar16° / 183.90.911.75.7
Apr22° / 11°132.70.112.98.0
May28° / 17°51.3013.97.6
Jun33° / 21°10.3014.44.5
Jul36° / 24°10.3014.22.9
Aug35° / 23°10.3013.33.8
Sep30° / 18°20.5012.26.8
Oct23° / 12°51.1011.18.8
Nov15° / 1130.210.15.4
Dec / 103.10.99.62.3

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 96% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 3% of July, with mostly cloudy or overcast conditions the remaining 1%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Chance of precipitation in July

Any precipitation

Semnan gets around 1 mm of rain over 0.3 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 1% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
301
311

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the dry band about 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1973
2964
3955
4955
5946
6937
7928
8928
9919
10919
119010
129010
139010
149010
158911
169010
179010
189010
19919
20919
21919
22928
23928
24928
25928
26928
27928
28928
29928
30919
31919

Wind in July

Winds average 14 km/h in July, the windiest month of the year.

Across July, daily wind ranges from about 12 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3112light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 24 min at the start of July to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:48 AM to 5:07 AM, and sunset from 7:11 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:487:11
214.44:497:11
314.44:497:11
414.44:507:11
514.34:507:11
614.34:517:11
714.34:517:11
814.34:527:10
914.34:527:10
1014.34:537:10
1114.34:537:10
1214.34:547:09
1314.24:557:09
1414.24:557:09
1514.24:567:08
1614.24:567:08
1714.24:577:07
1814.14:587:07
1914.14:587:06
2014.14:597:06
2114.15:007:05
2214.15:017:04
2314.05:017:04
2414.05:027:03
2514.05:037:03
2614.05:037:02
2713.95:047:01
2813.95:057:00
2913.95:067:00
3013.95:066:59
3113.85:076:58

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 7.47 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 — July's 7.47 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.6Intense
27.6Intense
37.6Intense
47.6Intense
57.5Intense
67.5Intense
77.5Intense
87.5Intense
97.5Intense
107.5Intense
117.5Intense
127.5Intense
137.5Intense
147.5Intense
157.5Intense
167.5Intense
177.5Intense
187.5Intense
197.5Intense
207.5Intense
217.5Intense
227.5Intense
237.5Intense
247.4Intense
257.4Intense
267.4Intense
277.4Intense
287.4Intense
297.4Intense
307.4Intense
317.4Intense
Planning a trip in July

Is July a good time to visit Semnan?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.9
Sightseeing
9th-best month of the year
6.7
Beach & pool
5th-best month of the year

July is a weaker month for outdoor sightseeing in Semnan. The water and warmth also suit a beach or pool day.

What to pack for Semnan in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Semnan sees daytime highs around 36°C and nights near 24°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Semnan in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 11 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 19UV 11Jan 10UV 3
UV index (midday)Level
Jan3Moderate
Feb5High
Mar5Moderate
Apr8Very high
May10Very high
Jun10Very high
Jul11Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Semnan in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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).

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorDec 1945 µg/m³Aug 1122 µg/m³
PM2.5 (µg/m³)Level
Jan43Poor
Feb41Poor
Mar38Poor
Apr40Poor
May34Moderate
Jun23Moderate
Jul23Moderate
Aug22Moderate
Sep28Moderate
Oct32Moderate
Nov39Poor
Dec46Poor
Location & terrain

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.

GarmsārĪstgāh-e Rāh Āhan-e GarmsārDāmghānQā’em ShahrSari

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.

3 km
144 m
16 km
1,254 m
80 km
3,375 m
treesgrasslandcroplandartificial surfacesbare terrain
July weather nearby: Mahdishahr 15 km · Fīrūzkūh 60 km · Zīr Āb 77 km · Garmsār 103 km · Īstgāh-e Rāh Āhan-e Garmsār 105 km · Dāmghān 108 km · Qā’em Shahr 110 km · Sari 114 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
Muslim 99%Christian 1%Baha'i 0%agnostic 0%

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).