Sirjan weather in May

In May, Sirjan sees average daytime highs of 28°C and overnight lows near 16°C, with 3 mm of rain across 1 wet days and about 13.5 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 31°C by the end. The sky is clear or mostly clear about 73% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of May to 13 h 42 min by month's end. Set against the rest of the year, May is Sirjan's 6th-clearest and 7th-windiest month. For the whole year in context, see Sirjan's year-round climate.

Daytime high
28°
5th warmest
Overnight low
16°
8th coldest
Rainfall
3 mm
1 wet days
Daylight
13 h 30 min
4:59 AM – 6:28 PM
Cloud cover
26%
6th clearest
Wind
11 km/h
7th windiest
Solar energy
7.89 kWh/m²
Travel score
7.6
out of 10

Sirjan is city in Kerman 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 26°C in the first days to 31°C by the end.

A typical May day in Sirjan reaches about 28°C in the afternoon and slips back to 16°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 31°C. Set against its neighbours, May runs about 6°C warmer than April and about 5°C cooler than June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12513
22613
32613
42614
52614
62614
72714
82714
92714
102715
112715
122815
132815
142815
152815
162816
172916
182916
192916
202916
212916
222917
233017
243017
253017
263017
273017
283117
293118
303118
313118

How May really feels in Sirjan

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.

Sirjan 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
Jan11° / -0°366210.33.1
Feb13° / 405.71.110.94.3
Mar17° / 366.40.111.86.2
Apr22° / 10°143.2012.78.1
May28° / 16°31013.57.6
Jun33° / 20°10.1013.94.8
Jul34° / 22°10.3013.73.7
Aug33° / 20°20.7013.14.7
Sep30° / 16°00012.27.0
Oct24° / 11°20.3011.39.3
Nov18° / 112.20.110.57.1
Dec13° / 263.50.610.14.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 73% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 13%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27822
37921
47921
58119
68119
78218
88218
98416
108416
118515
128515
138614
148614
158614
168713
178812
188812
198812
208812
219010
229010
239010
24919
25919
26928
27937
28937
29937
30955
31955

Chance of precipitation in May

Any precipitation

Sirjan gets around 3 mm of rain over 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 3% and peaks near 5% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
15
25
34
44
54
64
74
84
94
104
114
124
134
144
154
163
173
183
193
203
212
222
232
242
252
262
272
282
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 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 11 km/h in May.

Across May, daily wind ranges from about 11 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
112calm
212calm
312calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 06 min at the start of May to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over May. Sunrise moves from 5:11 AM to 4:53 AM, and sunset from 6:18 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:116:18
213.15:106:19
313.25:096:19
413.25:086:20
513.25:076:21
613.25:076:21
713.35:066:22
813.35:056:23
913.35:046:23
1013.35:036:24
1113.45:036:24
1213.45:026:25
1313.45:016:26
1413.45:016:26
1513.55:006:27
1613.54:596:28
1713.54:596:28
1813.54:586:29
1913.54:586:30
2013.64:576:30
2113.64:576:31
2213.64:566:31
2313.64:566:32
2413.64:556:33
2513.64:556:33
2613.74:546:34
2713.74:546:34
2813.74:546:35
2913.74:536:36
3013.74:536:36
3113.74:536:37

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.89 kWh/m².

For context, solar energy here swings from a low near 3.79 kWh/m² to a high of 7.96 kWh/m² in June across the year — May's 7.89 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.6Intense
27.6Intense
37.6Intense
47.7Intense
57.7Intense
67.7Intense
77.7Intense
87.7Intense
97.8Intense
107.8Intense
117.8Intense
127.8Intense
137.8Intense
147.9Intense
157.9Intense
167.9Intense
177.9Intense
188.0Intense
198.0Intense
208.0Intense
218.0Intense
228.0Intense
238.0Intense
248.0Intense
258.0Intense
268.1Intense
278.1Intense
288.1Intense
298.1Intense
308.1Intense
318.1Intense
Planning a trip in May

Is May a good time to visit Sirjan?

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

7.6
Sightseeing
3rd-best month of the year
8.7
Beach & pool
2nd-best month of the year

May is one of the better times to visit Sirjan for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Sirjan in May

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

In May, Sirjan sees daytime highs around 28°C and nights near 16°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Sirjan 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 Sirjan peaks around June 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighModerateJun 18UV 12Dec 20UV 4
UV index (midday)Level
Jan4Moderate
Feb7Very high
Mar9Very high
Apr8Very high
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep10Extreme
Oct8Very high
Nov5High
Dec4Moderate

Air quality in Sirjan 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 Sirjan is worst in April — around 35 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 15 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 2134 µg/m³Nov 2016 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb25Moderate
Mar29Moderate
Apr35Moderate
May33Moderate
Jun27Moderate
Jul34Moderate
Aug27Moderate
Sep25Moderate
Oct21Moderate
Nov15Moderate
Dec17Moderate
Location & terrain

Where is Sirjan?

Sirjan sits at 29.5°N, 55.7°E, 1,744 m above sea level, in Iran. The nearest listed city is Najafshahr, 8.0 km away.

RafsanjānḨājjīābādNeyrīzDārāb

Topography around Sirjan

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

Within 3 km, the terrain around Sirjan has only modest variations in elevation — a maximum elevation change of 48 m around an average of 1,743 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 467 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,192 m.

The land around Sirjan is covered by artificial surfaces (69%) and bare terrain (23%) within 3 km, bare terrain (77%) within 16 km, and bare terrain (88%) within 80 km.

3 km
48 m
16 km
467 m
80 km
2,192 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Najafshahr 8.0 km · Shahr-e Bābak 92 km · Bāft 93 km · Bardsīr 101 km · Rafsanjān 110 km · Ḩājjīābād 129 km · Neyrīz 134 km · Dārāb 135 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 Sirjan (29.4514°, 55.6809°, elevation 1,744 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).