Borūjen weather in May

In May, Borūjen sees average daytime highs of 22°C and overnight lows near 9°C, with 15 mm of rain across 4.6 wet days and about 13.6 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 25°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 12 min at the start of May to 13 h 54 min by month's end. Set against the rest of the year, May is Borūjen's 6th-clearest and 3rd-windiest month. For the whole year in context, see Borūjen's year-round climate.

Daytime high
22°
5th warmest
Overnight low
8th coldest
Rainfall
15 mm
4.6 wet days
Daylight
13 h 36 min
5:12 AM – 6:50 PM
Cloud cover
34%
6th clearest
Wind
10 km/h
3rd windiest
Solar energy
7.67 kWh/m²
Travel score
7.9
out of 10

Borūjen is city in Chaharmahal and Bakhtiari 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 25°C by the end.

A typical May day in Borūjen reaches about 22°C in the afternoon and slips back to 9°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°C. Set against its neighbours, May runs about 6°C warmer than April and about 6°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1197
2197
3197
4197
5207
6208
7208
8208
9208
10218
11218
12219
13219
14229
15229
16229
172210
182210
192310
202310
212310
222310
232411
242411
252411
262411
272511
282512
292512
302512
312612

How May really feels in Borūjen

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.

Borūjen 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -8°446.16.310.10.0
Feb / -6°385.35.110.80.2
Mar10° / -1°416.73.311.82.6
Apr16° / 266.60.312.85.6
May22° / 154.6013.67.9
Jun28° / 14°20.80147.8
Jul31° / 17°10.3013.96.0
Aug30° / 16°10.2013.26.8
Sep26° / 12°10.2012.28.9
Oct20° / 62011.28.1
Nov12° / 2741.610.43.8
Dec / -5°335.24.49.90.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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 20%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
37030
47030
57129
67228
77327
87426
97525
107624
117723
127723
137921
147921
158119
168119
178119
188218
198317
208416
218416
228416
238515
248515
258614
268713
278713
288911
298911
308911
31919

Chance of precipitation in May

Any precipitation

Borūjen gets around 15 mm of rain over 4.6 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 14% and peaks near 23% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
123
223
322
422
521
621
720
819
919
1018
1117
1216
1315
1414
1514
1613
1712
1812
1911
2011
2111
2210
2310
2410
259
269
279
288
298
308
318

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 (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 10 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
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
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 12 min at the start of May to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:25 AM to 5:05 AM, and sunset from 6:39 PM to 7:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:256:39
213.35:246:40
313.35:236:41
413.35:226:41
513.45:216:42
613.45:206:43
713.45:196:44
813.45:186:44
913.55:186:45
1013.55:176:46
1113.55:166:46
1213.55:156:47
1313.65:146:48
1413.65:146:49
1513.65:136:49
1613.65:126:50
1713.75:126:51
1813.75:116:51
1913.75:106:52
2013.75:106:53
2113.75:096:53
2213.85:096:54
2313.85:086:55
2413.85:086:55
2513.85:076:56
2613.85:076:57
2713.95:066:57
2813.95:066:58
2913.95:056:59
3013.95:056:59
3113.95:057:00

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.67 kWh/m².

For context, solar energy here swings from a low near 3.43 kWh/m² to a high of 8.05 kWh/m² in June across the year — May's 7.67 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.3Intense
37.3Intense
47.3Intense
57.3Intense
67.4Intense
77.4Intense
87.4Intense
97.5Intense
107.5Intense
117.5Intense
127.6Intense
137.6Intense
147.6Intense
157.7Intense
167.7Intense
177.7Intense
187.8Intense
197.8Intense
207.8Intense
217.8Intense
227.8Intense
237.9Intense
247.9Intense
257.9Intense
267.9Intense
278.0Intense
288.0Intense
298.0Intense
308.0Intense
318.0Intense
Planning a trip in May

Is May a good time to visit Borūjen?

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

7.9
Sightseeing
3rd-best month of the year
5.5
Beach & pool
5th-best month of the year

May is one of the better times to visit Borūjen for general sightseeing.

What to pack for Borūjen in May

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

In May, Borūjen sees daytime highs around 22°C and nights near 9°C. Pack sun protection. Worth having: light clothes. About 5 days see rain.

sun protectionlight clothes

UV index in Borūjen in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Borūjen peaks around July 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 20UV 12Jan 10UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar8Very high
Apr8Very high
May11Extreme
Jun11Extreme
Jul12Extreme
Aug12Extreme
Sep9Very high
Oct8Very high
Nov5Moderate
Dec4Moderate

Air quality in Borūjen 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 Borūjen is worst in April — around 37 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (August, 20 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1937 µg/m³Aug 1820 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb29Moderate
Mar32Moderate
Apr37Poor
May35Moderate
Jun24Moderate
Jul26Moderate
Aug20Moderate
Sep24Moderate
Oct25Moderate
Nov23Moderate
Dec23Moderate
Location & terrain

Where is Borūjen?

Borūjen sits at 32.0°N, 51.3°E, 2,197 m above sea level, in Iran. The nearest listed city is Dehāqān, 34 km away.

Topography around Borūjen

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

Within 3 km, the terrain around Borūjen has only modest variations in elevation — a maximum elevation change of 82 m around an average of 2,237 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 958 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,813 m.

The land around Borūjen is covered by bare terrain (40%), cropland (33%) and artificial surfaces (26%) within 3 km, bare terrain (45%) and cropland (37%) within 16 km, and bare terrain (46%) and grassland (31%) within 80 km.

3 km
82 m
16 km
958 m
80 km
2,813 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Dehāqān 34 km · Varnāmkhvāst 44 km · Farrokh Shahr 45 km · Sedeh Lanjān 46 km · Mobārakeh 47 km · Chamgordān 48 km · Zarrīn Shahr 48 km · Dīzīcheh 51 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 Borūjen (31.9652°, 51.2873°, elevation 2,197 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).