Udachny weather in May

In May, Udachny sees average daytime highs of 6°C and overnight lows near -4°C, with 42 mm of precipitation across 9.6 wet days and about 18.8 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 2°C in the first days to 11°C by the end. The sky is clear or mostly clear about 11% of the time in May, and the air most often feels dry.

Daylight stretches from about 16 h 48 min at the start of May to 20 h 48 min by month's end. Set against the rest of the year, May is Udachny's 6th-clearest and 1st-windiest month. For the whole year in context, see Udachny's year-round climate.

Daytime high
5th warmest
Overnight low
-4°
8th coldest
Precipitation
42 mm
9.6 wet days
Daylight
18 h 48 min
4:03 AM – 10:51 PM
Cloud cover
79%
6th clearest
Wind
11 km/h
1st windiest
Solar energy
5.25 kWh/m²
Travel score
0.7
out of 10

Udachny is town in Mirninsky District, Sakha Republic, Russia.

Density
7,633/km²
people per km²
Founded
1967

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 2°C in the first days to 11°C by the end.

A typical May day in Udachny reaches about 6°C in the afternoon and slips back to -4°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between -2°C and 13°C. Set against its neighbours, May runs about 9°C warmer than April and about 10°C cooler than June.

-20°-10°10°20°151015202531
Avg high (°C)Avg low (°C)
11-9
21-9
32-8
42-8
52-8
63-7
73-7
83-6
93-6
104-6
114-5
124-5
135-5
145-4
155-4
166-4
176-3
186-3
197-3
207-2
217-2
228-2
238-1
249-1
2590
2690
27100
28101
29111
30112
31122

How May really feels in Udachny

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 31 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
31
11 feel bitter (≤ -10°C)

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

Udachny 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-30° / -37°30.92.13.60.0
Feb-26° / -34°30.827.40.0
Mar-15° / -26°62.13.711.10.0
Apr-3° / -14°205.66.714.90.0
May / -4°429.67.118.80.7
Jun16° / 5410.8122.44.7
Jul20° / 10°599.3020.66.2
Aug16° / 5610.20.316.64.7
Sep / -1°419.44.412.80.8
Oct-7° / -14°226.1890.0
Nov-22° / -29°82.54.75.10.0
Dec-29° / -36°31.22.41.60.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 9% of May, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11981
21981
31981
41981
51981
61981
71981
81981
92080
102080
112080
122080
131981
141981
151981
161981
171981
181981
191981
201981
211981
221981
232080
242080
252179
262278
272377
282377
292377
302377
312575

Chance of precipitation in May

Any precipitationSnow

Udachny gets around 42 mm of rain and snow over 9.6 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 31% and peaks near 36% on the wettest days, and about 7 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
12526
22526
32526
42526
52526
62526
72626
82626
92726
102826
112826
122926
132925
143025
153025
163124
173124
183224
193323
203322
213422
223421
233520
243519
253518
263517
273617
283616
293615
303614
313613

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, the windiest month of the year.

Across May, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 16 h 48 min at the start of May to 20 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 240 minutes over May. Sunrise moves from 5:02 AM to 3:04 AM, and sunset from 9:53 PM to 11:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.85:029:53
217.04:589:57
317.14:5410:00
417.24:5010:04
517.44:4610:08
617.54:4210:12
717.64:3810:16
817.84:3410:19
917.94:3010:23
1018.04:2610:27
1118.14:2210:31
1218.34:1810:35
1318.44:1510:39
1418.54:1110:43
1518.74:0710:47
1618.84:0310:51
1718.93:5910:55
1819.13:5510:58
1919.23:5111:02
2019.33:4711:06
2119.53:4311:10
2219.63:3911:14
2319.73:3511:19
2419.93:3111:23
2520.03:2811:27
2620.13:2411:31
2720.23:2011:35
2820.43:1611:39
2920.53:1211:43
3020.63:0811:47
3120.83:0411:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.25 kWh/m².

For context, solar energy here swings from a low near 0.01 kWh/m² to a high of 5.52 kWh/m² in June across the year — May's 5.25 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.1Bright
85.1Bright
95.1Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.5Bright
Planning a trip in May

Is May a good time to visit Udachny?

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

0.7
Sightseeing
5th-best month of the year
0.0
Beach & pool
4th-best month of the year

May is a weaker month for outdoor sightseeing in Udachny.

What to pack for Udachny in May

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

In May, Udachny sees daytime highs around 6°C and nights near -4°C. Pack a warm layer and a heavy coat. Worth having: rain gear and sun protection. About 10 days see rain.

a warm layera heavy coatrain gearsun protection

UV index in Udachny in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Udachny peaks around July 16 at about 5 (moderate) — 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 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJul 16UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb0Low
Mar1Low
Apr2Moderate
May4Moderate
Jun4Moderate
Jul5Moderate
Aug3Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low

Air quality in Udachny 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 Udachny is worst in August — around 16 µg/m³ PM2.5 (moderate), about 32.8× the cleanest month (December, 1 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1216 µg/m³Dec 181 µg/m³
PM2.5 (µg/m³)Level
Jan1Good
Feb1Good
Mar3Good
Apr4Good
May5Good
Jun8Good
Jul14Moderate
Aug16Moderate
Sep6Good
Oct2Good
Nov1Good
Dec1Good
Location & terrain

Where is Udachny?

Udachny sits at 66.4°N, 112.4°E, 315 m above sea level, in Russia. The nearest listed city is Aykhal, 69 km away.

LenskBodayboYakutskTalnakhNorilskUst’-Ilimsk

Topography around Udachny

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

Within 3 km, the terrain around Udachny has significant variations in elevation — a maximum elevation change of 253 m around an average of 333 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 386 m; within 80 km, significant variations in elevation — a maximum elevation change of 593 m.

The land around Udachny is covered by trees (68%) within 3 km, trees (92%) within 16 km, and trees (97%) within 80 km.

3 km
253 m
16 km
386 m
80 km
593 m
treesgrasslandbare terrainwatermoss and lichen
May weather nearby: Aykhal 69 km · Mirny 439 km · Lensk 647 km · Bodaybo 958 km · Yakutsk 965 km · Talnakh 1,050 km · Norilsk 1,055 km · Ust’-Ilimsk 1,062 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 Udachny (66.4299°, 112.4021°, elevation 315 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).