Bojnūrd weather in May

In May, Bojnūrd sees average daytime highs of 24°C and overnight lows near 11°C, with 40 mm of rain across 8.1 wet days and about 14 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 26°C by the end. The sky is clear or mostly clear about 49% 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 24 min by month's end. Set against the rest of the year, May is Bojnūrd's 7th-clearest and 10th-windiest month. For the whole year in context, see Bojnūrd's year-round climate.

Daytime high
24°
5th warmest
Overnight low
11°
8th coldest
Rainfall
40 mm
8.1 wet days
Daylight
14 hours
4:37 AM – 6:37 PM
Cloud cover
44%
7th clearest
Wind
7 km/h
10th windiest
Solar energy
6.71 kWh/m²
Travel score
7.4
out of 10

Bojnūrd is city in North Khorasan province, Iran.

Density
5,334/km²
people per km²

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 21°C in the first days to 26°C by the end.

A typical May day in Bojnūrd reaches about 24°C in the afternoon and slips back to 11°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 29°C. Set against its neighbours, May runs about 5°C warmer than April and about 6°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1219
2219
3219
4229
52210
62210
72210
82210
92210
102310
112310
122311
132311
142311
152311
162311
172411
182411
192411
202412
212412
222512
232512
242512
252512
262512
272612
282613
292613
302613
312713

How May really feels in Bojnūrd

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.

Bojnūrd weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°356.45.69.70.2
Feb / -3°497.95.310.60.9
Mar12° / 7111.13.411.73.3
Apr18° / 6210.10.512.95.9
May24° / 11°408.10147.4
Jun29° / 15°153.3014.57.0
Jul32° / 18°51.3014.35.6
Aug31° / 17°41013.46.1
Sep27° / 13°71.9012.38.3
Oct21° / 143.30118.1
Nov13° / 295.41.1104.4
Dec / -2°275.63.19.51.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% 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 33%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25644
35644
45545
55644
65644
75743
85743
95941
105941
116040
126139
136238
146436
156436
166634
176733
186832
197030
207129
217228
227426
237525
247624
257723
267723
277822
288020
298020
308119
318218

Chance of precipitation in May

Any precipitation

Bojnūrd gets around 40 mm of rain over 8.1 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 26% and peaks near 35% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
234
334
434
533
633
733
832
932
1031
1130
1229
1328
1427
1526
1626
1725
1824
1923
2023
2122
2222
2321
2420
2520
2619
2719
2818
2918
3018
3117

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 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
2991
3991
4991
5991
6982
7982
8973
9973
10973
11964
12964
13964
14964
15964
16964
17964
18964
19964
20964
21964
22964
23955
24955
25955
26955
27946
28946
29937
30937
31928

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 min at the start of May to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 4:52 AM to 4:27 AM, and sunset from 6:24 PM to 6:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.54:526:24
213.64:516:25
313.64:506:25
413.64:496:26
513.74:486:27
613.74:466:28
713.74:456:29
813.84:446:30
913.84:436:31
1013.84:426:32
1113.94:416:33
1213.94:406:34
1313.94:396:35
1413.94:386:35
1514.04:386:36
1614.04:376:37
1714.04:366:38
1814.14:356:39
1914.14:346:40
2014.14:336:41
2114.14:336:41
2214.24:326:42
2314.24:316:43
2414.24:316:44
2514.24:306:45
2614.34:306:45
2714.34:296:46
2814.34:286:47
2914.34:286:48
3014.34:276:48
3114.44:276:49

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.71 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 7.53 kWh/m² in July across the year — May's 6.71 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.4Intense
76.4Intense
86.4Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.6Intense
146.6Intense
156.6Intense
166.7Intense
176.7Intense
186.8Intense
196.8Intense
206.8Intense
216.9Intense
226.9Intense
237.0Intense
247.0Intense
257.0Intense
267.1Intense
277.1Intense
287.1Intense
297.2Intense
307.2Intense
317.2Intense
Planning a trip in May

Is May a good time to visit Bojnūrd?

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

7.4
Sightseeing
3rd-best month of the year
5.9
Beach & pool
5th-best month of the year

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

What to pack for Bojnūrd in May

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

In May, Bojnūrd sees daytime highs around 24°C and nights near 11°C. Pack sun protection. Worth having: light clothes and rain gear. About 8 days see rain.

sun protectionlight clothesrain gear

UV index in Bojnūrd in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bojnūrd peaks around July 18 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 18UV 11Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul11Extreme
Aug9Very high
Sep7High
Oct5High
Nov3Moderate
Dec3Moderate

Air quality in Bojnūrd 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 Bojnūrd is worst in September — around 31 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 17 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1631 µg/m³Dec 2217 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb19Moderate
Mar25Moderate
Apr26Moderate
May27Moderate
Jun25Moderate
Jul27Moderate
Aug26Moderate
Sep31Moderate
Oct25Moderate
Nov20Moderate
Dec17Moderate
Location & terrain

Where is Bojnūrd?

Bojnūrd sits at 37.5°N, 57.3°E, 1,069 m above sea level, in Iran. The nearest listed city is Āshkhāneh, 37 km away.

AbadanJājarmAshgabat

Topography around Bojnūrd

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

Within 3 km, the terrain around Bojnūrd has only modest variations in elevation — a maximum elevation change of 93 m around an average of 1,075 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,032 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,648 m.

The land around Bojnūrd is covered by artificial surfaces (63%) and cropland (26%) within 3 km, grassland (51%) and cropland (26%) within 16 km, and grassland (49%) and bare terrain (31%) within 80 km.

3 km
93 m
16 km
1,032 m
80 km
2,648 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Āshkhāneh 37 km · Esfarāyen 47 km · Shīrvān 54 km · Arkadag 93 km · Gökdepe 94 km · Abadan 100 km · Jājarm 102 km · Ashgabat 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 Bojnūrd (37.4747°, 57.329°, elevation 1,069 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).