Khomeyn weather in May

In May, Khomeyn sees average daytime highs of 23°C and overnight lows near 11°C, with 20 mm of rain across 5.8 wet days and about 13.7 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 26°C by the end. The sky is clear or mostly clear about 54% 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 Khomeyn's 6th-clearest and 2nd-windiest month. For the whole year in context, see Khomeyn's year-round climate.

Daytime high: 23°; 5th warmest
Overnight low: 11°; 8th coldest
Rainfall: 20 mm; 5.8 wet days
Daylight: 13 h 42 min; 5:14 AM – 6:58 PM
Cloud cover: 39%; 6th clearest
Wind: 11 km/h; 2nd windiest
Solar energy: 7.37 kWh/m²
Travel score: 7.7; out of 10

Khomeyn is city in Markazi Province, Iran.

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

← April Khomeyn year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 26°C by the end.

A typical May day in Khomeyn reaches about 23°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 19°C and 27°C. Set against its neighbours, May runs about 6°C warmer than April and about 7°C cooler than June.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	20	20	20	20	20	21	21	21	21	22	22	22	22	23	23	23	23	24	24	24	24	25	25	25	25	26	26	26	26	27	27
Avg low (°C)	8	8	8	9	9	9	9	9	9	10	10	10	10	10	10	11	11	11	11	11	11	12	12	12	12	12	12	13	13	13	13

	Avg high (°C)	Avg low (°C)
1	20	8
2	20	8
3	20	8
4	20	9
5	20	9
6	21	9
7	21	9
8	21	9
9	21	9
10	22	10
11	22	10
12	22	10
13	22	10
14	23	10
15	23	10
16	23	11
17	23	11
18	24	11
19	24	11
20	24	11
21	24	11
22	25	12
23	25	12
24	25	12
25	25	12
26	26	12
27	26	12
28	26	13
29	26	13
30	27	13
31	27	13

How May really feels in Khomeyn

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

heat index over the day's high

Days feeling ≤ 0°C

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.

Khomeyn 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.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	4° / -6°	30	6.1	5.4	10	0.1
Feb	7° / -4°	32	6.3	4.2	10.7	1.0
Mar	12° / 0°	43	7.5	3	11.7	3.4
Apr	17° / 5°	37	8.3	0.3	12.8	5.8
May	23° / 11°	20	5.8	0	13.7	7.7
Jun	30° / 16°	4	1.1	0	14.2	6.6
Jul	33° / 19°	1	0.3	0	14	4.4
Aug	32° / 18°	1	0.2	0	13.2	5.0
Sep	28° / 13°	1	0.5	0	12.2	8.0
Oct	21° / 7°	11	3.3	0	11.2	8.1
Nov	13° / 1°	25	5.1	0.9	10.3	4.0
Dec	7° / -3°	28	5.8	3.7	9.8	1.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% 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 25%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	62	62	63	63	63	65	65	66	67	68	69	71	72	73	74	75	77	78	79	80	81	82	83	84	84	85	86	87	87	89	89
Cloudier (%)	38	38	37	37	37	35	35	34	33	32	31	29	28	27	26	25	23	22	21	20	19	18	17	16	16	15	14	13	13	11	11

	Clearer (%)	Cloudier (%)
1	62	38
2	62	38
3	63	37
4	63	37
5	63	37
6	65	35
7	65	35
8	66	34
9	67	33
10	68	32
11	69	31
12	71	29
13	72	28
14	73	27
15	74	26
16	75	25
17	77	23
18	78	22
19	79	21
20	80	20
21	81	19
22	82	18
23	83	17
24	84	16
25	84	16
26	85	15
27	86	14
28	87	13
29	87	13
30	89	11
31	89	11

Chance of precipitation in May

Any precipitation

Khomeyn gets around 20 mm of rain over 5.8 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 18% and peaks near 28% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	28	27	27	26	26	25	25	24	23	22	21	20	19	19	18	17	17	17	16	16	15	15	14	13	13	12	12	11	10	10	9

	Rain chance (%)
1	28
2	27
3	27
4	26
5	26
6	25
7	25
8	24
9	23
10	22
11	21
12	20
13	19
14	19
15	18
16	17
17	17
18	17
19	16
20	16
21	15
22	15
23	14
24	13
25	13
26	12
27	12
28	11
29	10
30	10
31	9

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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

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 11 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	10	10	10	10	10	10	10	10	10	10	10
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	11	calm
2	11	calm
3	11	calm
4	11	calm
5	11	calm
6	11	calm
7	11	calm
8	11	calm
9	11	calm
10	11	calm
11	11	calm
12	11	calm
13	11	calm
14	11	calm
15	11	calm
16	11	calm
17	11	calm
18	11	calm
19	11	calm
20	11	calm
21	10	calm
22	10	calm
23	10	calm
24	10	calm
25	10	calm
26	10	calm
27	10	calm
28	10	calm
29	10	calm
30	10	calm
31	10	calm

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 5:27 AM to 5:06 AM, and sunset from 6:47 PM to 7:08 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	13.3	13.4	13.4	13.4	13.4	13.5	13.5	13.5	13.6	13.6	13.6	13.6	13.7	13.7	13.7	13.7	13.8	13.8	13.8	13.8	13.9	13.9	13.9	13.9	13.9	14.0	14.0	14.0	14.0	14.0	14.0
Sunrise (AM)	5:27	5:26	5:25	5:24	5:23	5:22	5:21	5:20	5:19	5:19	5:18	5:17	5:16	5:15	5:15	5:14	5:13	5:12	5:12	5:11	5:10	5:10	5:09	5:09	5:08	5:08	5:07	5:07	5:06	5:06	5:06
Sunset (PM)	6:47	6:47	6:48	6:49	6:50	6:50	6:51	6:52	6:53	6:53	6:54	6:55	6:56	6:57	6:57	6:58	6:59	7:00	7:00	7:01	7:02	7:02	7:03	7:04	7:05	7:05	7:06	7:07	7:07	7:08	7:08

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.3	5:27	6:47
2	13.4	5:26	6:47
3	13.4	5:25	6:48
4	13.4	5:24	6:49
5	13.4	5:23	6:50
6	13.5	5:22	6:50
7	13.5	5:21	6:51
8	13.5	5:20	6:52
9	13.6	5:19	6:53
10	13.6	5:19	6:53
11	13.6	5:18	6:54
12	13.6	5:17	6:55
13	13.7	5:16	6:56
14	13.7	5:15	6:57
15	13.7	5:15	6:57
16	13.7	5:14	6:58
17	13.8	5:13	6:59
18	13.8	5:12	7:00
19	13.8	5:12	7:00
20	13.8	5:11	7:01
21	13.9	5:10	7:02
22	13.9	5:10	7:02
23	13.9	5:09	7:03
24	13.9	5:09	7:04
25	13.9	5:08	7:05
26	14.0	5:08	7:05
27	14.0	5:07	7:06
28	14.0	5:07	7:07
29	14.0	5:06	7:07
30	14.0	5:06	7:08
31	14.0	5:06	7:08

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.37 kWh/m².

For context, solar energy here swings from a low near 3.09 kWh/m² to a high of 7.9 kWh/m² in June across the year — May's 7.37 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	6.9	6.9	7.0	7.0	7.0	7.0	7.1	7.1	7.1	7.2	7.2	7.2	7.3	7.3	7.3	7.4	7.4	7.5	7.5	7.5	7.6	7.6	7.6	7.7	7.7	7.7	7.7	7.8	7.8	7.8	7.8
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	6.9	Intense
2	6.9	Intense
3	7.0	Intense
4	7.0	Intense
5	7.0	Intense
6	7.0	Intense
7	7.1	Intense
8	7.1	Intense
9	7.1	Intense
10	7.2	Intense
11	7.2	Intense
12	7.2	Intense
13	7.3	Intense
14	7.3	Intense
15	7.3	Intense
16	7.4	Intense
17	7.4	Intense
18	7.5	Intense
19	7.5	Intense
20	7.5	Intense
21	7.6	Intense
22	7.6	Intense
23	7.6	Intense
24	7.7	Intense
25	7.7	Intense
26	7.7	Intense
27	7.7	Intense
28	7.8	Intense
29	7.8	Intense
30	7.8	Intense
31	7.8	Intense

Planning a trip in May

Is May a good time to visit Khomeyn?

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

7.7

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 Khomeyn for general sightseeing.

What to pack for Khomeyn in May

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

In May, Khomeyn sees daytime highs around 23°C and nights near 11°C. Pack sun protection. Worth having: light clothes. About 6 days see rain.

sun protectionlight clothes

UV index in Khomeyn 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 Khomeyn peaks around July 21 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 3 (moderate).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	3	5	7	7	11	11	12	11	9	7	4	3
Level	Moderate	High	High	Very high	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Moderate	Moderate

	UV index (midday)	Level
Jan	3	Moderate
Feb	5	High
Mar	7	High
Apr	7	Very high
May	11	Extreme
Jun	11	Extreme
Jul	12	Extreme
Aug	11	Extreme
Sep	9	Very high
Oct	7	Very high
Nov	4	Moderate
Dec	3	Moderate

Air quality in Khomeyn 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 Khomeyn is worst in April — around 39 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (August, 25 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	26	30	34	39	37	29	31	25	29	28	27	26
Level	Moderate	Moderate	Moderate	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	26	Moderate
Feb	30	Moderate
Mar	34	Moderate
Apr	39	Poor
May	37	Poor
Jun	29	Moderate
Jul	31	Moderate
Aug	25	Moderate
Sep	29	Moderate
Oct	28	Moderate
Nov	27	Moderate
Dec	26	Moderate

Location & terrain

Where is Khomeyn?

Khomeyn sits at 33.6°N, 50.1°E, 1,809 m above sea level, in Iran. The nearest listed city is Golpāyegān, 28 km away.

Topography around Khomeyn

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

Within 3 km, the terrain around Khomeyn has only modest variations in elevation — a maximum elevation change of 232 m around an average of 1,819 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,403 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,746 m.

The land around Khomeyn is covered by cropland (41%) and artificial surfaces (35%) within 3 km, cropland (56%) and bare terrain (23%) within 16 km, and bare terrain (47%), cropland (27%) and grassland (24%) within 80 km.

3 km

232 m

cropland 41%

16 km

1,403 m

cropland 56%

80 km

2,746 m

bare terrain 47%

grasslandcroplandartificial surfacesbare terrain

← April Khomeyn year-round climate June →Best places to visit in May

May weather nearby: Golpāyegān 28 km · Alīgūdarz 44 km · Maḩallāt 46 km · Khānsār 51 km · Aznā 61 km · Arāk 62 km · Karahrūd 62 km · Delījān 68 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

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 Khomeyn (33.6389°, 50.08°, elevation 1,809 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).

	Avg high (°C)	Avg low (°C)
1	20	8
2	20	8
3	20	8
4	20	9
5	20	9
6	21	9
7	21	9
8	21	9
9	21	9
10	22	10
11	22	10
12	22	10
13	22	10
14	23	10
15	23	10
16	23	11
17	23	11
18	24	11
19	24	11
20	24	11
21	24	11
22	25	12
23	25	12
24	25	12
25	25	12
26	26	12
27	26	12
28	26	13
29	26	13
30	27	13
31	27	13

	Clearer (%)	Cloudier (%)
1	62	38
2	62	38
3	63	37
4	63	37
5	63	37
6	65	35
7	65	35
8	66	34
9	67	33
10	68	32
11	69	31
12	71	29
13	72	28
14	73	27
15	74	26
16	75	25
17	77	23
18	78	22
19	79	21
20	80	20
21	81	19
22	82	18
23	83	17
24	84	16
25	84	16
26	85	15
27	86	14
28	87	13
29	87	13
30	89	11
31	89	11

	Rain chance (%)
1	28
2	27
3	27
4	26
5	26
6	25
7	25
8	24
9	23
10	22
11	21
12	20
13	19
14	19
15	18
16	17
17	17
18	17
19	16
20	16
21	15
22	15
23	14
24	13
25	13
26	12
27	12
28	11
29	10
30	10
31	9

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	20	8
2	20	8
3	20	8
4	20	9
5	20	9
6	21	9
7	21	9
8	21	9
9	21	9
10	22	10
11	22	10
12	22	10
13	22	10
14	23	10
15	23	10
16	23	11
17	23	11
18	24	11
19	24	11
20	24	11
21	24	11
22	25	12
23	25	12
24	25	12
25	25	12
26	26	12
27	26	12
28	26	13
29	26	13
30	27	13
31	27	13

	Clearer (%)	Cloudier (%)
1	62	38
2	62	38
3	63	37
4	63	37
5	63	37
6	65	35
7	65	35
8	66	34
9	67	33
10	68	32
11	69	31
12	71	29
13	72	28
14	73	27
15	74	26
16	75	25
17	77	23
18	78	22
19	79	21
20	80	20
21	81	19
22	82	18
23	83	17
24	84	16
25	84	16
26	85	15
27	86	14
28	87	13
29	87	13
30	89	11
31	89	11

	Rain chance (%)
1	28
2	27
3	27
4	26
5	26
6	25
7	25
8	24
9	23
10	22
11	21
12	20
13	19
14	19
15	18
16	17
17	17
18	17
19	16
20	16
21	15
22	15
23	14
24	13
25	13
26	12
27	12
28	11
29	10
30	10
31	9

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	20	8
2	20	8
3	20	8
4	20	9
5	20	9
6	21	9
7	21	9
8	21	9
9	21	9
10	22	10
11	22	10
12	22	10
13	22	10
14	23	10
15	23	10
16	23	11
17	23	11
18	24	11
19	24	11
20	24	11
21	24	11
22	25	12
23	25	12
24	25	12
25	25	12
26	26	12
27	26	12
28	26	13
29	26	13
30	27	13
31	27	13

	Clearer (%)	Cloudier (%)
1	62	38
2	62	38
3	63	37
4	63	37
5	63	37
6	65	35
7	65	35
8	66	34
9	67	33
10	68	32
11	69	31
12	71	29
13	72	28
14	73	27
15	74	26
16	75	25
17	77	23
18	78	22
19	79	21
20	80	20
21	81	19
22	82	18
23	83	17
24	84	16
25	84	16
26	85	15
27	86	14
28	87	13
29	87	13
30	89	11
31	89	11

	Rain chance (%)
1	28
2	27
3	27
4	26
5	26
6	25
7	25
8	24
9	23
10	22
11	21
12	20
13	19
14	19
15	18
16	17
17	17
18	17
19	16
20	16
21	15
22	15
23	14
24	13
25	13
26	12
27	12
28	11
29	10
30	10
31	9

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100