Omsk weather in May

In May, Omsk sees average daytime highs of 18°C and overnight lows near 6°C, with 36 mm of precipitation across 8 wet days and about 15.8 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 21°C by the end. The sky is clear or mostly clear about 27% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 54 min at the start of May to 16 h 36 min by month's end. Set against the rest of the year, May is Omsk's 1st-clearest and 6th-windiest month. For the whole year in context, see Omsk's year-round climate.

Daytime high
18°
4th warmest
Overnight low
9th coldest
Precipitation
36 mm
8 wet days
Daylight
15 h 54 min
5:07 AM – 8:59 PM
Cloud cover
60%
1st clearest
Wind
14 km/h
6th windiest
Solar energy
5.73 kWh/m²
Travel score
6.1
out of 10

Omsk is city in Russia.

Density
2,046/km²
people per km²
Founded
1716

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 15°C in the first days to 21°C by the end.

A typical May day in Omsk reaches about 18°C in the afternoon and slips back to 6°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 27°C. Set against its neighbours, May runs about 9°C warmer than April and about 5°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1153
2153
3154
4164
5164
6164
7175
8175
9175
10185
11186
12186
13186
14186
15196
16196
17197
18197
19197
20197
21207
22207
23208
24208
25208
26208
27218
28219
29219
30219
31219

How May really feels in Omsk

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 2 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
2
wind chill below the day's low

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

Omsk weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-13° / -21°154.96.37.50.0
Feb-11° / -19°124.15.49.30.0
Mar-3° / -11°185.2511.40.0
Apr / -1°307.42.513.82.1
May18° / 3680.415.86.1
Jun23° / 12°5310.10176.8
Jul24° / 14°6211.2016.56.7
Aug22° / 11°6110.8014.76.5
Sep16° / 337.80.112.54.9
Oct / -0°3283.110.21.3
Nov-4° / -10°297.67.38.10.0
Dec-11° / -18°216.67.970.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34159
44258
54258
64357
74357
84456
94555
104555
114654
124654
134654
144654
154654
164852
174753
184753
194852
204753
214753
224753
234753
244753
254852
264753
274753
284753
294753
304753
314753

Chance of precipitation in May

Any precipitationSnow

Omsk gets around 36 mm of rain and snow over 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 27% and peaks near 29% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1263
2263
3263
4263
5262
6262
7262
8262
9262
10272
11272
12282
13282
14282
15291
16291
17291
18281
19281
20281
21281
22271
23271
24271
25271
26270
27270
28270
29270
30280
31280

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 (%)Humid (%)
110000
210000
310000
410000
510000
610000
710000
810000
910000
1010000
1110000
1210000
1310000
1410000
1510000
1610000
1710000
1810000
199910
209910
219910
229910
239910
249910
259910
269820
279721
289721
299721
309721
319631

Wind in May

Winds average 14 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 54 min at the start of May to 16 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 102 minutes over May. Sunrise moves from 5:37 AM to 4:45 AM, and sunset from 8:30 PM to 9:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.95:378:30
215.05:358:32
315.05:338:34
415.15:318:36
515.25:288:38
615.25:268:40
715.35:248:42
815.45:228:44
915.45:208:46
1015.55:188:48
1115.65:168:49
1215.65:148:51
1315.75:128:53
1415.75:118:55
1515.85:098:57
1615.95:078:59
1715.95:059:00
1816.05:049:02
1916.05:029:04
2016.15:009:05
2116.14:599:07
2216.24:579:09
2316.24:569:10
2416.34:549:12
2516.34:539:14
2616.44:519:15
2716.44:509:17
2816.54:499:18
2916.54:489:20
3016.64:479:21
3116.64:459:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.73 kWh/m².

For context, solar energy here swings from a low near 0.52 kWh/m² to a high of 6 kWh/m² in June across the year — May's 5.73 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
75.5Bright
85.5Bright
95.5Bright
105.6Bright
115.6Bright
125.6Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
286.0Bright
296.0Bright
306.0Bright
316.0Bright
Planning a trip in May

Is May a good time to visit Omsk?

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

6.1
Sightseeing
4th-best month of the year
2.4
Beach & pool
4th-best month of the year

May is a reasonable time to visit Omsk for sightseeing.

What to pack for Omsk in May

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

In May, Omsk sees daytime highs around 18°C and nights near 6°C. Worth packing: a warm layer, rain gear and sun protection. About 8 days see rain.

a warm layerrain gearsun protection

UV index in Omsk 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 Omsk peaks around June 23 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 22 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 23UV 6Dec 22UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5High
Jun6High
Jul6High
Aug4Moderate
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low

Air quality in Omsk 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 Omsk is worst in April — around 16 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodGoodApr 1515 µg/m³Dec 216 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar11Good
Apr16Moderate
May10Good
Jun9Good
Jul14Moderate
Aug9Good
Sep7Good
Oct8Good
Nov8Good
Dec6Good
Location & terrain

Where is Omsk?

Omsk sits at 55.0°N, 73.4°E, 90 m above sea level, in Russia. The nearest listed city is Kalachinsk, 77 km away.

Topography around Omsk

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

Within 3 km, the terrain around Omsk has only modest variations in elevation — a maximum elevation change of 57 m around an average of 91 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 81 m; within 80 km, only modest variations in elevation — a maximum elevation change of 93 m.

The land around Omsk is covered by artificial surfaces (63%) and trees (21%) within 3 km, trees (26%), artificial surfaces (25%) and cropland (24%) within 16 km, and cropland (53%) and grassland (27%) within 80 km.

3 km
57 m
16 km
81 m
80 km
93 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Kalachinsk 77 km · Isil’kul’ 134 km · Tatarsk 168 km · Tara 221 km · Kupino 263 km · Petropavl 270 km · Ishim 274 km · Shchuchinsk 309 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 Omsk (54.9924°, 73.3686°, elevation 90 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).