Hamadan weather in May

In May, Hamadan sees average daytime highs of 22°C and overnight lows near 10°C, with 39 mm of rain across 9.4 wet days and about 13.8 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 52% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of May to 14 h 06 min by month's end. Set against the rest of the year, May is Hamadan's 6th-clearest and 2nd-windiest month. For the whole year in context, see Hamadan's year-round climate.

Daytime high
22°
5th warmest
Overnight low
10°
8th coldest
Rainfall
39 mm
9.4 wet days
Daylight
13 h 48 min
5:18 AM – 7:07 PM
Cloud cover
41%
6th clearest
Wind
9 km/h
2nd windiest
Solar energy
7.24 kWh/m²
Travel score
7.1
out of 10

Hamadan is city in Hamadan Province, Iran.

Air quality
High
PM2.5 26.7 µg/m³ · 2016

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 Hamadan reaches about 22°C in the afternoon and slips back to 10°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°C. Set against its neighbours, May runs about 6°C warmer than April and about 8°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1188
2198
3198
4198
5198
6199
7209
8209
9209
10209
11219
12219
132110
142110
152210
162210
172210
182210
192311
202311
212311
222311
232411
242412
252412
262512
272512
282512
292513
302613
312613

How May really feels in Hamadan

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.

Hamadan 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 / -6°488.88.49.90.0
Feb / -4°559.78.610.70.2
Mar10° / 77126.311.72.2
Apr16° / 6913.41.212.84.6
May22° / 10°399.4013.87.1
Jun29° / 15°51.5014.36.9
Jul33° / 19°20.5014.14.4
Aug33° / 18°10.6013.34.8
Sep28° / 13°20.7012.27.9
Oct20° / 265.8011.17.5
Nov11° / 508.32.210.23.1
Dec / -3°487.86.19.70.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 21% of May, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26238
36337
46337
56337
66337
76436
86436
96535
106535
116634
126832
136832
146931
157030
167228
177327
187426
197624
207624
217822
227921
238020
248119
258218
268317
278317
288515
298614
308614
318812

Chance of precipitation in May

Any precipitation

Hamadan gets around 39 mm of rain over 9.4 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 30% and peaks near 40% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
339
439
538
638
737
837
936
1036
1135
1234
1333
1432
1532
1631
1730
1829
1928
2027
2126
2225
2324
2423
2522
2621
2720
2819
2917
3016
3115

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 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 24 min at the start of May to 14 h 06 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 5:32 AM to 5:09 AM, and sunset from 6:55 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:326:55
213.45:316:55
313.45:306:56
413.55:296:57
513.55:286:58
613.55:276:59
713.65:266:59
813.65:257:00
913.65:247:01
1013.75:237:02
1113.75:227:03
1213.75:217:04
1313.75:207:04
1413.85:197:05
1513.85:187:06
1613.85:187:07
1713.85:177:07
1813.95:167:08
1913.95:167:09
2013.95:157:10
2113.95:147:11
2214.05:147:11
2314.05:137:12
2414.05:127:13
2514.05:127:13
2614.05:117:14
2714.15:117:15
2814.15:107:16
2914.15:107:16
3014.15:097:17
3114.15:097:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.24 kWh/m².

For context, solar energy here swings from a low near 2.89 kWh/m² to a high of 7.92 kWh/m² in June across the year — May's 7.24 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.9Intense
66.9Intense
76.9Intense
87.0Intense
97.0Intense
107.0Intense
117.1Intense
127.1Intense
137.2Intense
147.2Intense
157.2Intense
167.3Intense
177.3Intense
187.3Intense
197.4Intense
207.4Intense
217.4Intense
227.5Intense
237.5Intense
247.5Intense
257.6Intense
267.6Intense
277.6Intense
287.7Intense
297.7Intense
307.7Intense
317.7Intense
Planning a trip in May

Is May a good time to visit Hamadan?

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

7.1
Sightseeing
3rd-best month of the year
4.9
Beach & pool
5th-best month of the year

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

What to pack for Hamadan in May

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

In May, Hamadan sees daytime highs around 22°C and nights near 10°C. Pack sun protection. Worth having: rain gear. About 9 days see rain.

sun protectionrain gear

UV index in Hamadan in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hamadan peaks around July 18 at about 12 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 18UV 12Jan 10UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May10Very high
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Hamadan 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 Hamadan is worst in April — around 35 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (August, 22 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Hamadan's WHO annual average of 26.7 µg/m³.

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateApr 2035 µg/m³Aug 1922 µg/m³
PM2.5 (µg/m³)Level
Jan24Moderate
Feb26Moderate
Mar31Moderate
Apr35Poor
May34Moderate
Jun26Moderate
Jul27Moderate
Aug22Moderate
Sep25Moderate
Oct25Moderate
Nov23Moderate
Dec23Moderate
Location & terrain

Where is Hamadan?

Hamadan sits at 34.8°N, 48.5°E, 1,820 m above sea level, in Iran. The nearest listed city is Bahār, 14 km away.

Topography around Hamadan

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

Within 3 km, the terrain around Hamadan has only modest variations in elevation — a maximum elevation change of 184 m around an average of 1,829 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,861 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,193 m.

The land around Hamadan is covered by artificial surfaces (80%) within 3 km, grassland (41%) and cropland (29%) within 16 km, and cropland (56%) and grassland (29%) within 80 km.

3 km
184 m
16 km
1,861 m
80 km
2,193 m
treesgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Bahār 14 km · Tūyserkān 28 km · Asadābād 36 km · Kabūdarāhang 49 km · Kangāvar 60 km · Malāyer 62 km · Nahāvand 69 km · Qorveh 76 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 Hamadan (34.7992°, 48.5146°, elevation 1,820 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).