Semnan weather in June

In June, Semnan sees average daytime highs of 33°C and overnight lows near 21°C, with 1 mm of rain across 0.3 wet days and about 14.4 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 32°C in the first days to 35°C by the end. The sky is clear or mostly clear about 88% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of June to 14 h 24 min by month's end. Set against the rest of the year, June is Semnan's 4th-clearest and 2nd-windiest month. For the whole year in context, see Semnan's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
21°
10th coldest
Rainfall
1 mm
0.3 wet days
Daylight
14 h 24 min
4:45 AM – 7:08 PM
Cloud cover
16%
4th clearest
Wind
13 km/h
2nd windiest
Solar energy
7.71 kWh/m²
Travel score
4.5
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 June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 32°C in the first days to 35°C by the end.

A typical June day in Semnan reaches about 33°C in the afternoon and slips back to 21°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 37°C. Set against its neighbours, June runs about 5°C warmer than May and about 3°C cooler than July.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13119
23119
33219
43220
53220
63220
73220
83220
93320
103320
113321
123321
133321
143321
153321
163421
173421
183422
193422
203422
213422
223422
233422
243522
253522
263523
273523
283523
293523
303523

How June really feels in Semnan

Once humidity and wind are folded in, June averages 25 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
25
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Semnan weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 10th-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 June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 88% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 8% of June, with mostly cloudy or overcast conditions the remaining 3%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1919
2928
3928
4937
5937
6946
7946
8955
9964
10964
11973
12973
13973
14973
15973
16982
17982
18982
19982
20982
21982
22991
23991
24991
25991
26991
27991
28991
29991
30991

Chance of precipitation in June

Any precipitation

Semnan gets around 1 mm of rain over 0.3 wet days in June. 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 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
13
23
33
42
52
62
72
81
91
101
111
121
131
141
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
301

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
21991
22991
23991
24991
25991
26991
27982
28982
29982
30973

Wind in June

Winds average 13 km/h in June.

Across June, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112calm
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 12 min at the start of June to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:47 AM to 4:48 AM, and sunset from 7:01 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.24:477:01
214.24:477:01
314.34:477:02
414.34:467:03
514.34:467:03
614.34:467:04
714.34:467:04
814.34:457:05
914.34:457:05
1014.34:457:06
1114.44:457:06
1214.44:457:07
1314.44:457:07
1414.44:457:08
1514.44:457:08
1614.44:457:08
1714.44:457:09
1814.44:457:09
1914.44:457:09
2014.44:457:10
2114.44:457:10
2214.44:467:10
2314.44:467:10
2414.44:467:11
2514.44:467:11
2614.44:477:11
2714.44:477:11
2814.44:477:11
2914.44:487:11
3014.44:487:11

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 7.71 kWh/m² — the sunniest month for solar.

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 — June's 7.71 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
17.6Intense
27.6Intense
37.6Intense
47.7Intense
57.7Intense
67.7Intense
77.7Intense
87.7Intense
97.7Intense
107.7Intense
117.7Intense
127.7Intense
137.7Intense
147.7Intense
157.7Intense
167.7Intense
177.7Intense
187.7Intense
197.7Intense
207.7Intense
217.7Intense
227.7Intense
237.7Intense
247.7Intense
257.7Intense
267.7Intense
277.6Intense
287.6Intense
297.6Intense
307.6Intense
Planning a trip in June

Is June a good time to visit Semnan?

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

4.5
Sightseeing
7th-best month of the year
8.1
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Semnan for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Semnan in June

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

In June, Semnan sees daytime highs around 33°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Semnan in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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.

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 June

GoodModeratePoorUnhealthyVery unhealthy

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