Khalkhāl weather in May

In May, Khalkhāl sees average daytime highs of 19°C and overnight lows near 8°C, with 65 mm of precipitation across 13.8 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 17°C in the first days to 22°C by the end. The sky is clear or mostly clear about 37% 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 Khalkhāl's 6th-clearest and 6th-windiest month. For the whole year in context, see Khalkhāl's year-round climate.

Daytime high
19°
5th warmest
Overnight low
8th coldest
Precipitation
65 mm
13.8 wet days
Daylight
14 hours
5:12 AM – 7:13 PM
Cloud cover
51%
6th clearest
Wind
7 km/h
6th windiest
Solar energy
6.69 kWh/m²
Travel score
5.8
out of 10

Khalkhāl is city in Ardabil 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 17°C in the first days to 22°C by the end.

A typical May day in Khalkhāl reaches about 19°C in the afternoon and slips back to 8°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 24°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1176
2176
3177
4177
5177
6187
7187
8187
9188
10188
11198
12198
13198
14198
15198
16198
17209
18209
19209
20209
21209
22219
23219
242110
252110
262110
272210
282210
292210
302210
312210

How May really feels in Khalkhāl

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.

Khalkhāl 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 / -7°568.99.19.70.0
Feb / -5°6510.39.610.50.0
Mar / -1°8213.39.711.71.3
Apr14° / 8914.23.212.93.8
May19° / 6513.80.3145.8
Jun24° / 12°308.3014.57.7
Jul26° / 14°194.8014.38.1
Aug26° / 14°165013.48.0
Sep23° / 11°359012.37.3
Oct17° / 6410.21.3115.6
Nov / 7810.46101.7
Dec / -5°568.88.49.40.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 25% of May, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35248
45248
55347
65347
75446
85545
95545
105644
115743
125842
135743
145842
156040
166040
176139
186337
196436
206535
216634
226733
236931
246931
257129
267228
277228
287426
297426
307525
317723

Chance of precipitation in May

Any precipitationSnow

Khalkhāl gets around 65 mm of rain and snow over 13.8 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 44% and peaks near 47% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1475
2464
3464
4463
5463
6462
7462
8472
9472
10471
11471
12471
13471
14471
15471
16471
17461
18460
19450
20440
21440
22430
23430
24420
25420
26410
27410
28400
29390
30380
31380

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
22991
23991
24991
25991
26982
27982
28982
29982
30973
31973

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 6 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
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 5:27 AM to 5:02 AM, and sunset from 6:59 PM to 7:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:276:59
213.65:267:00
313.65:257:01
413.65:247:02
513.75:227:03
613.75:217:04
713.75:207:05
813.85:197:06
913.85:187:06
1013.85:177:07
1113.95:167:08
1213.95:157:09
1313.95:147:10
1414.05:137:11
1514.05:127:12
1614.05:127:13
1714.05:117:14
1814.15:107:14
1914.15:097:15
2014.15:087:16
2114.25:087:17
2214.25:077:18
2314.25:067:19
2414.25:067:19
2514.35:057:20
2614.35:047:21
2714.35:047:22
2814.35:037:23
2914.35:037:23
3014.45:027:24
3114.45:027:25

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.69 kWh/m².

For context, solar energy here swings from a low near 2.46 kWh/m² to a high of 7.33 kWh/m² in June across the year — May's 6.69 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.3Intense
36.3Intense
46.3Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.5Intense
106.5Intense
116.5Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.7Intense
176.7Intense
186.7Intense
196.8Intense
206.8Intense
216.8Intense
226.8Intense
236.9Intense
246.9Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.1Intense
307.1Intense
317.1Intense
Planning a trip in May

Is May a good time to visit Khalkhāl?

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

5.8
Sightseeing
5th-best month of the year
2.8
Beach & pool
5th-best month of the year

May is a reasonable time to visit Khalkhāl for sightseeing.

What to pack for Khalkhāl in May

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

In May, Khalkhāl sees daytime highs around 19°C and nights near 8°C. Pack sun protection. Worth having: rain gear. About 14 days see rain.

sun protectionrain gear

Sea temperature near Khalkhāl in May

The nearest coast averages about 19°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 52 km away) is warmest in August at about 28°C and coldest in February near 10°C.

It's comfortable for a long swim from May 22 to Nov 4 — about 5.5 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar10Bracing
Apr13Bracing
May19Cool
Jun24Warm
Jul27Warm
Aug28Warm
Sep26Warm
Oct23Refreshing
Nov18Cool
Dec14Bracing

UV index in Khalkhāl 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 Khalkhāl peaks around July 18 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 18UV 11Jan 10UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun10Very high
Jul11Extreme
Aug10Extreme
Sep7Very high
Oct5High
Nov3Moderate
Dec3Moderate

Air quality in Khalkhāl 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 Khalkhāl is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (July, 15 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2325 µg/m³Jul 1715 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb19Moderate
Mar25Moderate
Apr25Moderate
May23Moderate
Jun18Moderate
Jul15Moderate
Aug18Moderate
Sep20Moderate
Oct18Moderate
Nov17Moderate
Dec17Moderate
Location & terrain

Where is Khalkhāl?

Khalkhāl sits at 37.6°N, 48.5°E, 1,795 m above sea level, in Iran. The nearest listed city is Hashtpar, 39 km away.

Topography around Khalkhāl

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

Within 3 km, the terrain around Khalkhāl has significant variations in elevation — a maximum elevation change of 278 m around an average of 1,862 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,079 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,325 m.

The land around Khalkhāl is covered by grassland (46%), cropland (28%) and artificial surfaces (20%) within 3 km, grassland (75%) within 16 km, and grassland (47%) and cropland (22%) within 80 km.

3 km
278 m
16 km
2,079 m
80 km
3,325 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Hashtpar 39 km · Reẕvānshahr 54 km · Māsāl 60 km · Ardabīl 73 km · Mīāneh 75 km · Şowme‘eh Sarā 78 km · Fūman 82 km · Bandar-e Anzalī 83 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 Khalkhāl (37.6184°, 48.5293°, elevation 1,795 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).