Reẕvānshahr weather in May

In May, Reẕvānshahr sees average daytime highs of 20°C and overnight lows near 17°C, with 55 mm of rain across 12.1 wet days and about 14 hours of daylight. It is the 6th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 22°C by the end. The sky is clear or mostly clear about 33% of the time in May, and the air most often feels humid.

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 Reẕvānshahr's 5th-clearest and 10th-windiest month. For the whole year in context, see Reẕvānshahr's year-round climate.

Daytime high
20°
6th warmest
Overnight low
17°
7th coldest
Rainfall
55 mm
12.1 wet days
Daylight
14 hours
5:09 AM – 7:10 PM
Cloud cover
56%
5th clearest
Wind
7 km/h
10th windiest
Solar energy
5.54 kWh/m²
Travel score
6.1
out of 10

Reẕvānshahr is city in Gilan 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 18°C in the first days to 22°C by the end.

A typical May day in Reẕvānshahr reaches about 20°C in the afternoon and slips back to 17°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 23°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
11714
21714
31814
41814
51815
61815
71815
81915
91915
101916
111916
121916
132016
142016
152016
162017
172017
182017
192117
202117
212117
222118
232118
242218
252218
262218
272218
282219
292219
302319
312319

Reẕvānshahr weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 134145.59.72.1
Feb10° / 120135.210.61.9
Mar12° / 10914.6311.72.7
Apr15° / 12°8414.20.312.94.1
May20° / 17°5512.10146.1
Jun25° / 21°567.3014.57.7
Jul27° / 24°525.6014.37.7
Aug27° / 24°797.9013.47.2
Sep24° / 21°18713.4012.36.5
Oct21° / 17°25015.80115.6
Nov16° / 12°23515.91104.2
Dec12° / 15413.939.53.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 23% of May, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24258
34357
44555
54654
64654
74654
84852
94852
104852
115050
125149
135248
145248
155347
165446
175545
185644
195743
205941
216040
226139
236238
246436
256535
266634
276733
286832
296832
306931
317030

Chance of precipitation in May

Any precipitation

Reẕvānshahr gets around 55 mm of rain over 12.1 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 40% and peaks near 47% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
147
246
345
445
544
644
743
843
943
1042
1142
1242
1341
1441
1540
1640
1740
1839
1939
2038
2138
2237
2336
2436
2535
2635
2734
2834
2933
3032
3132

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the humid band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
142451300
239451500
337461700
434461910
532462210
629462410
727462620
825452820
923443030
1021433330
1119423540
1218413640
1316403850
1415394060
1514384170
1613374280
17123643100
18113444110
19103344130
2093145150
2192945170
2282745191
2372645211
2472445231
2562345251
2662144272
2752044292
2851943313
2941842323
3041842343
3131741354

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 5:25 AM to 5:00 AM, and sunset from 6:57 PM to 7:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:256:57
213.65:246:57
313.65:226:58
413.65:216:59
513.75:207:00
613.75:197:01
713.75:187:02
813.85:177:03
913.85:167:04
1013.85:157:05
1113.95:147:06
1213.95:137:07
1313.95:127:07
1414.05:117:08
1514.05:107:09
1614.05:097:10
1714.05:087:11
1814.15:087:12
1914.15:077:13
2014.15:067:14
2114.25:057:14
2214.25:057:15
2314.25:047:16
2414.25:037:17
2514.25:037:18
2614.35:027:18
2714.35:027:19
2814.35:017:20
2914.35:017:21
3014.45:007:21
3114.45:007:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.54 kWh/m².

For context, solar energy here swings from a low near 1.88 kWh/m² to a high of 6.26 kWh/m² in June across the year — May's 5.54 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.1Bright
45.1Bright
55.2Bright
65.2Bright
75.2Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.4Bright
135.4Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.6Bright
195.6Bright
205.6Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.9Bright
295.9Bright
305.9Bright
316.0Bright
Planning a trip in May

Hazard calendar for Reẕvānshahr

In seasonPeak

None of Reẕvānshahr's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Reẕvānshahr's rainy season runs September–February, when most of the year's rain falls.

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

Is May a good time to visit Reẕvānshahr?

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

6.1
Sightseeing
5th-best month of the year
3.2
Beach & pool
5th-best month of the year

May is a reasonable time to visit Reẕvānshahr for sightseeing.

What to pack for Reẕvānshahr in May

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

In May, Reẕvānshahr sees daytime highs around 20°C and nights near 17°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Reẕvānshahr 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 offshore 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 Reẕvānshahr in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Reẕvānshahr peaks around July 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 19UV 9Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar4Moderate
Apr6High
May7Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Moderate

Air quality in Reẕvānshahr 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 Reẕvānshahr is worst in March — around 27 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1826 µg/m³Jul 1315 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb21Moderate
Mar27Moderate
Apr23Moderate
May21Moderate
Jun17Moderate
Jul14Moderate
Aug20Moderate
Sep25Moderate
Oct23Moderate
Nov21Moderate
Dec20Moderate
Location & terrain

Where is Reẕvānshahr?

Reẕvānshahr sits at 37.5°N, 49.1°E, 15 m above sea level, in Iran. The nearest listed city is Māsāl, 21 km away.

Topography around Reẕvānshahr

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

Within 3 km, the terrain around Reẕvānshahr has only modest variations in elevation — a maximum elevation change of 107 m around an average of 14 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,430 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,325 m.

The land around Reẕvānshahr is covered by cropland (49%) and trees (22%) within 3 km, trees (42%), water (28%) and cropland (21%) within 16 km, and water (34%), grassland (29%) and trees (22%) within 80 km.

3 km
107 m
16 km
1,430 m
80 km
3,325 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Māsāl 21 km · Bandar-e Anzalī 30 km · Şowme‘eh Sarā 32 km · Hashtpar 34 km · Fūman 39 km · Khomām 49 km · Rasht 50 km · Khalkhāl 54 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 Reẕvānshahr (37.5495°, 49.1374°, elevation 15 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).