Zheleznogorsk-Ilimskiy weather in May

In May, Zheleznogorsk-Ilimskiy sees average daytime highs of 14°C and overnight lows near 2°C, with 45 mm of precipitation across 11.5 wet days and about 16.1 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 10°C in the first days to 17°C by the end. The sky is clear or mostly clear about 14% of the time in May, and the air most often feels dry.

Daylight stretches from about 15 h 06 min at the start of May to 16 h 54 min by month's end. Set against the rest of the year, May is Zheleznogorsk-Ilimskiy's 4th-clearest and 2nd-windiest month. For the whole year in context, see Zheleznogorsk-Ilimskiy's year-round climate.

Daytime high
14°
4th warmest
Overnight low
8th coldest
Precipitation
45 mm
11.5 wet days
Daylight
16 h 06 min
4:56 AM – 9:03 PM
Cloud cover
71%
4th clearest
Wind
11 km/h
2nd windiest
Solar energy
5.66 kWh/m²
Travel score
3.7
out of 10

Zheleznogorsk-Ilimskiy is human settlement in Nizhneilimsky District, Irkutsk Oblast, Russia.

Density
279/km²
people per km²
Founded
1948

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 10°C in the first days to 17°C by the end.

A typical May day in Zheleznogorsk-Ilimskiy reaches about 14°C in the afternoon and slips back to 2°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 22°C. Set against its neighbours, May runs about 9°C warmer than April and about 7°C cooler than June.

-10°10°20°30°151015202531
Avg high (°C)Avg low (°C)
19-2
210-2
310-1
410-1
511-1
611-1
7110
8120
9120
10121
11131
12131
13131
14132
15142
16142
17142
18143
19153
20153
21153
22154
23164
24164
25164
26164
27175
28175
29175
30176
31186

How May really feels in Zheleznogorsk-Ilimskiy

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 19 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
19
wind chill below the day's low

The story in May is cold — wind chill drags the overnight "feels like" below the raw low.

Zheleznogorsk-Ilimskiy weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-19° / -26°155.797.20.0
Feb-13° / -23°134.77.29.10.0
Mar-4° / -15°185.88.511.40.0
Apr / -6°278.36.413.90.4
May14° / 4511.51.916.13.7
Jun21° / 5711017.36.2
Jul23° / 13°6711.4016.86.6
Aug20° / 10°6911.4014.96.1
Sep12° / 5311.61.212.53.0
Oct / -5°3810.28.7100.1
Nov-10° / -17°309.3127.90.0
Dec-17° / -24°237.5116.60.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% 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 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22278
32377
42377
52377
62377
72476
82476
92476
102575
112575
122674
132674
142674
152674
162674
172773
182773
192773
202872
212872
222971
233070
243169
253169
263268
273268
283367
293466
303565
313664

Chance of precipitation in May

Any precipitationSnow

Zheleznogorsk-Ilimskiy gets around 45 mm of rain and snow over 11.5 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 37% and peaks near 41% on the wettest days, and about 2 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13313
23413
33412
43512
53511
63511
73610
83610
9369
10368
11368
12367
13367
14366
15366
16365
17365
18374
19374
20374
21383
22383
23383
24393
25392
26402
27402
28401
29411
30411
31401

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 11 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 15 h 06 min at the start of May to 16 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 108 minutes over May. Sunrise moves from 5:28 AM to 4:33 AM, and sunset from 8:33 PM to 9:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.15:288:33
215.25:268:35
315.25:248:37
415.35:218:39
515.45:198:41
615.45:178:43
715.55:158:45
815.65:128:47
915.75:108:49
1015.75:088:52
1115.85:068:54
1215.95:048:56
1315.95:028:57
1416.05:008:59
1516.14:589:01
1616.14:569:03
1716.24:549:05
1816.24:529:07
1916.34:519:09
2016.44:499:11
2116.44:479:13
2216.54:459:14
2316.54:449:16
2416.64:429:18
2516.74:419:20
2616.74:399:21
2716.84:389:23
2816.84:369:25
2916.94:359:26
3016.94:349:28
3116.94:339:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.66 kWh/m².

For context, solar energy here swings from a low near 0.46 kWh/m² to a high of 5.99 kWh/m² in June across the year — May's 5.66 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.3Bright
35.3Bright
45.3Bright
55.4Bright
65.4Bright
75.4Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.9Bright
315.9Bright
Planning a trip in May

Is May a good time to visit Zheleznogorsk-Ilimskiy?

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

3.7
Sightseeing
4th-best month of the year
0.4
Beach & pool
4th-best month of the year

May is a weaker month for outdoor sightseeing in Zheleznogorsk-Ilimskiy.

What to pack for Zheleznogorsk-Ilimskiy in May

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

In May, Zheleznogorsk-Ilimskiy sees daytime highs around 14°C and nights near 2°C. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

UV index in Zheleznogorsk-Ilimskiy in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Zheleznogorsk-Ilimskiy peaks around June 20 at about 6 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 20UV 6Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr4Moderate
May5Moderate
Jun6High
Jul5High
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low

Air quality in Zheleznogorsk-Ilimskiy 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 Zheleznogorsk-Ilimskiy is worst in July — around 44 µg/m³ PM2.5 (poor), about 37.0× the cleanest month (December, 1 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodJul 1742 µg/m³Dec 171 µg/m³
PM2.5 (µg/m³)Level
Jan3Good
Feb4Good
Mar5Good
Apr8Good
May11Good
Jun24Moderate
Jul44Poor
Aug26Moderate
Sep25Moderate
Oct12Good
Nov3Good
Dec1Good
Location & terrain

Where is Zheleznogorsk-Ilimskiy?

Zheleznogorsk-Ilimskiy sits at 56.6°N, 104.1°E, 392 m above sea level, in Russia. The nearest listed city is Ust’-Kut, 104 km away.

Topography around Zheleznogorsk-Ilimskiy

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

Within 3 km, the terrain around Zheleznogorsk-Ilimskiy has significant variations in elevation — a maximum elevation change of 579 m around an average of 489 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 609 m; within 80 km, large variations in elevation — a maximum elevation change of 821 m.

The land around Zheleznogorsk-Ilimskiy is covered by trees (71%) within 3 km, trees (91%) within 16 km, and trees (97%) within 80 km.

3 km
579 m
16 km
609 m
80 km
821 m
treesgrasslandartificial surfacesbare terrainwater
May weather nearby: Ust’-Kut 104 km · Bratsk 163 km · Ust’-Ilimsk 181 km · Vikhorevka 189 km · Chunskiy 282 km · Sayansk 300 km · Tulun 316 km · Zima 324 km

Russia travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$17,547
2025
Happiness
5.8 / 10
World Happiness, 2025
Safe drinking water
76%
of population, 2024
Homicide rate
6.8
per 100k, 2021
Road deaths
12
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 521
Religion
other Christian 2%

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 Zheleznogorsk-Ilimskiy (56.5767°, 104.1297°, elevation 392 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).