Khorramdarreh weather in May

In May, Khorramdarreh sees average daytime highs of 21°C and overnight lows near 9°C, with 54 mm of precipitation across 11.6 wet days and about 13.9 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 24°C by the end. The sky is clear or mostly clear about 47% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of May to 14 h 18 min by month's end. Set against the rest of the year, May is Khorramdarreh's 6th-clearest and 6th-windiest month. For the whole year in context, see Khorramdarreh's year-round climate.

Daytime high
21°
5th warmest
Overnight low
8th coldest
Precipitation
54 mm
11.6 wet days
Daylight
13 h 54 min
5:12 AM – 7:07 PM
Cloud cover
45%
6th clearest
Wind
9 km/h
6th windiest
Solar energy
6.94 kWh/m²
Travel score
6.6
out of 10

Khorramdarreh is city in Zanjan province, Iran.

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 19°C in the first days to 24°C by the end.

A typical May day in Khorramdarreh reaches about 21°C in the afternoon and slips back to 9°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 26°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1197
2197
3197
4198
5198
6198
7208
8208
9208
10208
11209
12209
13219
14219
15219
16219
17219
18229
192210
202210
212210
222310
232310
242310
252310
262411
272411
282411
292411
302411
312511

How May really feels in Khorramdarreh

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.

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

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Khorramdarreh weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -7°458.27.99.80.0
Feb / -5°5497.510.60.1
Mar10° / -1°7011.3611.72.2
Apr16° / 8212.91.712.94.8
May21° / 5411.60.113.96.6
Jun26° / 12°153.9014.48.2
Jul28° / 14°92.2014.27.8
Aug29° / 14°61.5013.47.6
Sep25° / 12°71.8012.28.7
Oct19° / 396.60.411.16.9
Nov11° / 598.93.610.12.7
Dec / -4°4686.69.60.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 31%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35545
45545
55743
65842
75842
85941
96139
106238
116337
126436
136634
146634
156733
166931
176931
187129
197228
207327
217426
227624
237624
247822
257921
268020
278119
288119
298317
308317
318416

Chance of precipitation in May

Any precipitationSnow

Khorramdarreh gets around 54 mm of rain and snow over 11.6 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 37% and peaks near 45% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1452
2451
3441
4441
5441
6441
7431
8431
9420
10410
11400
12400
13390
14380
15380
16370
17370
18360
19350
20340
21340
22330
23330
24320
25320
26310
27300
28290
29280
30270
31260

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
27991
28991
29991
30991
31991

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 min at the start of May to 14 h 18 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 5:27 AM to 5:03 AM, and sunset from 6:54 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:276:54
213.55:266:55
313.55:256:56
413.65:236:57
513.65:226:58
613.65:216:58
713.75:206:59
813.75:197:00
913.75:187:01
1013.75:177:02
1113.85:167:03
1213.85:157:04
1313.85:157:04
1413.95:147:05
1513.95:137:06
1613.95:127:07
1713.95:117:08
1814.05:107:09
1914.05:107:09
2014.05:097:10
2114.05:087:11
2214.15:087:12
2314.15:077:13
2414.15:067:13
2514.15:067:14
2614.25:057:15
2714.25:057:16
2814.25:047:16
2914.25:047:17
3014.25:037:18
3114.35:037:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.94 kWh/m².

For context, solar energy here swings from a low near 2.68 kWh/m² to a high of 7.51 kWh/m² in June across the year — May's 6.94 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.6Intense
66.6Intense
76.7Intense
86.7Intense
96.7Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.9Intense
156.9Intense
166.9Intense
177.0Intense
187.0Intense
197.0Intense
207.1Intense
217.1Intense
227.1Intense
237.2Intense
247.2Intense
257.2Intense
267.2Intense
277.3Intense
287.3Intense
297.3Intense
307.3Intense
317.4Intense
Planning a trip in May

Is May a good time to visit Khorramdarreh?

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

6.6
Sightseeing
6th-best month of the year
4.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Khorramdarreh for sightseeing.

What to pack for Khorramdarreh in May

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

In May, Khorramdarreh sees daytime highs around 21°C and nights near 9°C. Pack sun protection. Worth having: rain gear. About 12 days see rain.

sun protectionrain gear

UV index in Khorramdarreh 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 Khorramdarreh peaks around July 18 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 13 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 18UV 11Jan 13UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5Moderate
Apr7Very high
May9Very high
Jun10Very high
Jul11Extreme
Aug10Extreme
Sep7Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Khorramdarreh 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 Khorramdarreh is worst in April — around 39 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1638 µg/m³Aug 1226 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb31Moderate
Mar36Poor
Apr39Poor
May36Poor
Jun27Moderate
Jul26Moderate
Aug26Moderate
Sep28Moderate
Oct30Moderate
Nov30Moderate
Dec31Moderate
Location & terrain

Where is Khorramdarreh?

Khorramdarreh sits at 36.2°N, 49.2°E, 1,582 m above sea level, in Iran. The nearest listed city is Abhar, 7.0 km away.

Topography around Khorramdarreh

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

Within 3 km, the terrain around Khorramdarreh has only modest variations in elevation — a maximum elevation change of 84 m around an average of 1,592 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,010 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,807 m.

The land around Khorramdarreh is covered by cropland (47%) and artificial surfaces (22%) within 3 km, cropland (47%) and grassland (43%) within 16 km, and grassland (46%) and cropland (46%) within 80 km.

3 km
84 m
16 km
1,010 m
80 km
2,807 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Abhar 7.0 km · Tākestān 47 km · Qīdar 55 km · Shāl 62 km · Manjīl 62 km · Pādegān-e Manjīl 63 km · Maḩmūdābād Nemūneh 64 km · Eqbālīyeh 66 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 Khorramdarreh (36.2078°, 49.1953°, elevation 1,582 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).