Īstgāh-e Rāh Āhan-e Garmsār weather in May

In May, Īstgāh-e Rāh Āhan-e Garmsār sees average daytime highs of 30°C and overnight lows near 19°C, with 7 mm of rain across 1.8 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 33°C by the end. The sky is clear or mostly clear about 67% 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 12 min by month's end. Set against the rest of the year, May is Īstgāh-e Rāh Āhan-e Garmsār's 6th-clearest and 4th-windiest month. For the whole year in context, see Īstgāh-e Rāh Āhan-e Garmsār's year-round climate.

Daytime high
30°
5th warmest
Overnight low
19°
8th coldest
Rainfall
7 mm
1.8 wet days
Daylight
13 h 48 min
5:02 AM – 6:52 PM
Cloud cover
33%
6th clearest
Wind
10 km/h
4th windiest
Solar energy
7.5 kWh/m²
Travel score
6.2
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 27°C in the first days to 33°C by the end.

A typical May day in Īstgāh-e Rāh Āhan-e Garmsār reaches about 30°C in the afternoon and slips back to 19°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 34°C. Set against its neighbours, May runs about 6°C warmer than April and about 6°C cooler than June.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12716
22716
32716
42817
52817
62817
72817
82817
92917
102918
112918
122918
133018
143018
153019
163019
173019
183119
193119
203119
213120
223120
233220
243220
253220
263220
273321
283321
293321
303321
313321

How May really feels in Īstgāh-e Rāh Āhan-e Garmsār

Once humidity and wind are folded in, May averages 7 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
7
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Īstgāh-e Rāh Āhan-e Garmsār weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 214.81.29.92.5
Feb12° / 224.9110.73.9
Mar18° / 295.80.411.76.5
Apr24° / 13°183.7012.98.0
May30° / 19°71.8013.86.2
Jun36° / 24°10.3014.32.8
Jul38° / 27°10.2014.11.2
Aug37° / 25°10.2013.32.2
Sep33° / 20°10.3012.25.2
Oct26° / 14°71.6011.18.6
Nov17° / 224.60.210.16.1
Dec11° / 225.30.39.73.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 67% 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 19%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16931
27030
37129
47129
57228
67327
77426
87426
97624
107723
117723
127822
138020
148020
158119
168119
178317
188317
198317
208515
218515
228713
238713
248812
258911
269010
279010
289010
29928
30928
31928

Chance of precipitation in May

Any precipitation

Īstgāh-e Rāh Āhan-e Garmsār gets around 7 mm of rain over 1.8 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 6% and peaks near 10% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
110
210
310
410
59
69
79
88
98
108
117
127
136
146
156
165
175
185
194
204
214
224
234
244
253
263
273
283
293
303
313

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 10 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 24 min at the start of May to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:16 AM to 4:53 AM, and sunset from 6:40 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:166:40
213.45:156:41
313.55:146:42
413.55:136:43
513.55:126:43
613.65:116:44
713.65:106:45
813.65:096:46
913.75:086:47
1013.75:076:48
1113.75:066:48
1213.75:056:49
1313.85:046:50
1413.85:036:51
1513.85:026:52
1613.85:026:52
1713.95:016:53
1813.95:006:54
1913.94:596:55
2013.94:596:56
2114.04:586:56
2214.04:576:57
2314.04:576:58
2414.04:566:59
2514.14:566:59
2614.14:557:00
2714.14:557:01
2814.14:547:01
2914.14:547:02
3014.24:537:03
3114.24:537:03

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.5 kWh/m².

For context, solar energy here swings from a low near 2.81 kWh/m² to a high of 8.03 kWh/m² in June across the year — May's 7.5 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.2Intense
47.2Intense
57.2Intense
67.2Intense
77.3Intense
87.3Intense
97.3Intense
107.3Intense
117.4Intense
127.4Intense
137.4Intense
147.5Intense
157.5Intense
167.5Intense
177.5Intense
187.6Intense
197.6Intense
207.6Intense
217.7Intense
227.7Intense
237.7Intense
247.7Intense
257.8Intense
267.8Intense
277.8Intense
287.8Intense
297.8Intense
307.9Intense
317.9Intense
Planning a trip in May

Is May a good time to visit Īstgāh-e Rāh Āhan-e Garmsār?

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

6.2
Sightseeing
4th-best month of the year
8.3
Beach & pool
2nd-best month of the year

May is a reasonable time to visit Īstgāh-e Rāh Āhan-e Garmsār for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Īstgāh-e Rāh Āhan-e Garmsār in May

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

In May, Īstgāh-e Rāh Āhan-e Garmsār sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Īstgāh-e Rāh Āhan-e Garmsār in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Īstgāh-e Rāh Āhan-e Garmsār peaks around July 18 at about 10 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highVery highHighModerateJul 18UV 10Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar4Moderate
Apr7Very high
May9Very high
Jun9Very high
Jul10Extreme
Aug10Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Īstgāh-e Rāh Āhan-e Garmsār 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 Īstgāh-e Rāh Āhan-e Garmsār is worst in December — around 73 µg/m³ PM2.5 (unhealthy), about 2.6× the cleanest month (July, 28 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyDec 2072 µg/m³Jul 2228 µg/m³
PM2.5 (µg/m³)Level
Jan69Unhealthy
Feb64Unhealthy
Mar56Unhealthy
Apr56Unhealthy
May47Poor
Jun32Moderate
Jul28Moderate
Aug29Moderate
Sep39Poor
Oct49Poor
Nov62Unhealthy
Dec73Unhealthy
Location & terrain

Where is Īstgāh-e Rāh Āhan-e Garmsār?

Īstgāh-e Rāh Āhan-e Garmsār sits at 35.2°N, 52.3°E, 848 m above sea level, in Iran. The nearest listed city is Garmsār, 3.0 km away.

Topography around Īstgāh-e Rāh Āhan-e Garmsār

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Īstgāh-e Rāh Āhan-e Garmsār.

Within 3 km, the terrain around Īstgāh-e Rāh Āhan-e Garmsār has only modest variations in elevation — a maximum elevation change of 110 m around an average of 851 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,431 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,171 m.

The land around Īstgāh-e Rāh Āhan-e Garmsār is covered by bare terrain (62%) and cropland (21%) within 3 km, bare terrain (74%) and cropland (23%) within 16 km, and bare terrain (68%) and grassland (21%) within 80 km.

3 km
110 m
16 km
1,431 m
80 km
4,171 m
treesgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Garmsār 3.0 km · Kahrīzak 44 km · Pīshvā 54 km · Damāvand 58 km · Mojtame‘-e Maskūnī-ye Nāmjū 59 km · Varāmīn 61 km · Pākdasht 63 km · Rūdehen 66 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 Īstgāh-e Rāh Āhan-e Garmsār (35.2345°, 52.3094°, elevation 848 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).