Dehlorān weather in May

In May, Dehlorān sees average daytime highs of 34°C and overnight lows near 21°C, with 9 mm of rain across 1.5 wet days and about 13.7 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 31°C in the first days to 38°C by the end. The sky is clear or mostly clear about 70% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of May to 14 hours by month's end. Set against the rest of the year, May is Dehlorān's 6th-clearest and 3rd-windiest month. For the whole year in context, see Dehlorān's year-round climate.

Daytime high
34°
5th warmest
Overnight low
21°
8th coldest
Rainfall
9 mm
1.5 wet days
Daylight
13 h 42 min
5:27 AM – 7:07 PM
Cloud cover
27%
6th clearest
Wind
11 km/h
3rd windiest
Solar energy
7.47 kWh/m²
Travel score
3.6
out of 10

Dehlorān is city in Ilam Province, Iran.

Air quality
Very high
PM2.5 43.6 µg/m³ · 2016

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 31°C in the first days to 38°C by the end.

A typical May day in Dehlorān reaches about 34°C in the afternoon and slips back to 21°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 38°C. Set against its neighbours, May runs about 7°C warmer than April and about 6°C cooler than June.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
13018
23118
33119
43119
53119
63219
73219
83219
93220
103320
113320
123320
133320
143421
153421
163421
173521
183521
193521
203522
213622
223622
233622
243622
253723
263723
273723
283823
293823
303823
313824

How May really feels in Dehlorān

Once humidity and wind are folded in, May averages 24 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
24
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Dehlorān weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 928.510.14.5
Feb16° / 717.410.85.6
Mar21° / 11°727.211.87.3
Apr27° / 15°40512.87.4
May34° / 21°91.513.73.6
Jun40° / 25°00.114.10.2
Jul43° / 28°0013.90.0
Aug42° / 27°00.113.20.0
Sep38° / 23°10.312.21.2
Oct31° / 19°17211.25.6
Nov22° / 12°625.310.37.7
Dec16° / 847.59.95.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 70% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17426
27426
37426
47525
57525
67624
77723
87723
97723
107921
118020
128020
138119
148119
158317
168317
178416
188515
198515
208614
218713
228713
238812
248812
258911
268911
27919
28919
29919
30928
31928

Chance of precipitation in May

Any precipitation

Dehlorān gets around 9 mm of rain over 1.5 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 5% and peaks near 13% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
113
212
312
411
510
610
79
88
98
107
117
126
135
145
154
164
173
183
193
202
212
222
232
242
252
262
271
281
291
301
311

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19190
29190
39190
49280
59280
69181
79271
89271
99271
109361
119361
129451
139451
149451
159451
169541
179541
189631
199730
209730
219730
229820
239820
249820
259820
269820
279910
289910
299910
309910
319910

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 18 min at the start of May to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:40 AM to 5:19 AM, and sunset from 6:56 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:406:56
213.35:396:57
313.35:386:58
413.45:376:59
513.45:366:59
613.45:357:00
713.45:347:01
813.55:337:02
913.55:327:02
1013.55:327:03
1113.65:317:04
1213.65:307:05
1313.65:297:05
1413.65:287:06
1513.75:287:07
1613.75:277:07
1713.75:267:08
1813.75:267:09
1913.75:257:10
2013.85:247:10
2113.85:247:11
2213.85:237:12
2313.85:237:12
2413.85:227:13
2513.95:227:14
2613.95:217:14
2713.95:217:15
2813.95:207:16
2913.95:207:16
3014.05:197:17
3114.05:197:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.47 kWh/m².

For context, solar energy here swings from a low near 2.94 kWh/m² to a high of 8.02 kWh/m² in June across the year — May's 7.47 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.0Intense
27.0Intense
37.0Intense
47.1Intense
57.1Intense
67.1Intense
77.2Intense
87.2Intense
97.3Intense
107.3Intense
117.3Intense
127.4Intense
137.4Intense
147.4Intense
157.5Intense
167.5Intense
177.5Intense
187.6Intense
197.6Intense
207.6Intense
217.7Intense
227.7Intense
237.7Intense
247.7Intense
257.8Intense
267.8Intense
277.8Intense
287.8Intense
297.8Intense
307.9Intense
317.9Intense
Planning a trip in May

Hazard calendar for Dehlorān

In seasonPeak

In May, Dehlorān sits inside its dust season. The full year is below, with each hazard's peak months called out.

Dehlorān sees seasonal dust haze (March–May), heaviest in May.

Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Dehlorān?

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

3.6
Sightseeing
8th-best month of the year
6.9
Beach & pool
3rd-best month of the year

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

What to pack for Dehlorān in May

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

In May, Dehlorān sees daytime highs around 34°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Dehlorān in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Dehlorān peaks around June 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 12 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 16UV 10Jan 12UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May9Very high
Jun10Very high
Jul9Very high
Aug10Very high
Sep7High
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Dehlorān in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Dehlorān is worst in April — around 55 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (November, 34 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Dehlorān's WHO annual average of 43.6 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorPoorModerateApr 2155 µg/m³Nov 2334 µg/m³
PM2.5 (µg/m³)Level
Jan36Poor
Feb41Poor
Mar51Poor
Apr55Unhealthy
May54Poor
Jun47Poor
Jul46Poor
Aug44Poor
Sep42Poor
Oct40Poor
Nov34Moderate
Dec34Moderate
Location & terrain

Where is Dehlorān?

Dehlorān sits at 32.7°N, 47.3°E, 224 m above sea level, in Iran. The nearest listed city is Ābdānān, 36 km away.

AndīmeshkShush

Topography around Dehlorān

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Dehlorān.

Within 3 km, the terrain around Dehlorān has only modest variations in elevation — a maximum elevation change of 110 m around an average of 225 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,319 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,482 m.

The land around Dehlorān is covered by cropland (34%), bare terrain (31%) and grassland (23%) within 3 km, bare terrain (42%), cropland (29%) and grassland (28%) within 16 km, and grassland (41%) and bare terrain (41%) within 80 km.

3 km
110 m
16 km
1,319 m
80 km
2,482 m
grasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Ābdānān 36 km · Darreh Shahr 51 km · ‘Alī al Gharbī 60 km · Poldokhtar 66 km · Al ‘Amārah 96 km · Kūhdasht 99 km · Andīmeshk 105 km · Shush 107 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 Dehlorān (32.6941°, 47.2679°, elevation 224 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).