Isil’kul’ weather in May

In May, Isil’kul’ sees average daytime highs of 18°C and overnight lows near 6°C, with 37 mm of precipitation across 8.2 wet days and about 15.8 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 20°C by the end. The sky is clear or mostly clear about 26% 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 Isil’kul’'s 2nd-clearest and 8th-windiest month. For the whole year in context, see Isil’kul’'s year-round climate.

Daytime high
18°
4th warmest
Overnight low
9th coldest
Precipitation
37 mm
8.2 wet days
Daylight
15 h 48 min
5:16 AM – 9:07 PM
Cloud cover
60%
2nd clearest
Wind
14 km/h
8th windiest
Solar energy
5.69 kWh/m²
Travel score
6.0
out of 10

Isil’kul’ is town in Omsk Oblast, Russia.

Density
144/km²
people per km²
Founded
1895

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 20°C by the end.

A typical May day in Isil’kul’ 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
2154
3154
4164
5164
6165
7175
8175
9175
10175
11186
12186
13186
14186
15186
16197
17197
18197
19197
20197
21197
22197
23208
24208
25208
26208
27208
28209
29219
30219
31219

How May really feels in Isil’kul’

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 1 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
1
wind chill below the day's low

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

Isil’kul’ 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-13° / -20°14567.60.0
Feb-10° / -18°134.45.49.30.0
Mar-2° / -11°195.65.311.40.0
Apr / -1°316.82.413.82.1
May18° / 378.20.415.86.0
Jun23° / 12°5310.50176.6
Jul24° / 14°7011.9016.56.7
Aug22° / 12°6510.3014.76.5
Sep16° / 398.9012.54.7
Oct / -0°338.13.310.21.3
Nov-4° / -10°287.86.98.10.0
Dec-10° / -17°216.37.770.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24159
34159
44159
54258
64357
74357
84357
94456
104456
114555
124555
134654
144654
154654
164654
174753
184753
194753
204852
214852
224753
234753
244753
254753
264654
274555
284555
294654
304555
314555

Chance of precipitation in May

Any precipitationSnow

Isil’kul’ gets around 37 mm of rain and snow over 8.2 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 28% and peaks near 31% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1264
2264
3263
4253
5253
6253
7252
8252
9252
10262
11262
12262
13272
14272
15282
16282
17281
18291
19291
20291
21291
22291
23291
24291
25291
26301
27301
28300
29310
30310
31310

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
179910
189910
199910
209910
219910
229910
239820
249820
259820
269820
279631
289631
299541
309541
319451

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
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light 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 5:46 AM to 4:54 AM, and sunset from 8:39 PM to 9:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.95:468:39
214.95:448:40
315.05:418:42
415.15:398:44
515.25:378:46
615.25:358:48
715.35:338:50
815.45:318:52
915.45:298:54
1015.55:278:56
1115.55:258:57
1215.65:238:59
1315.75:219:01
1415.75:199:03
1515.85:189:05
1615.85:169:07
1715.95:149:08
1816.05:129:10
1916.05:119:12
2016.15:099:13
2116.15:089:15
2216.25:069:17
2316.25:049:18
2416.35:039:20
2516.35:029:22
2616.45:009:23
2716.44:599:25
2816.54:589:26
2916.54:579:28
3016.64:559:29
3116.64:549:30

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.69 kWh/m².

For context, solar energy here swings from a low near 0.48 kWh/m² to a high of 5.97 kWh/m² in June across the year — May's 5.69 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.3Bright
45.3Bright
55.4Bright
65.4Bright
75.4Bright
85.5Bright
95.5Bright
105.5Bright
115.6Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
316.0Bright
Planning a trip in May

Is May a good time to visit Isil’kul’?

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

6.0
Sightseeing
4th-best month of the year
2.2
Beach & pool
4th-best month of the year

May is a reasonable time to visit Isil’kul’ for sightseeing.

What to pack for Isil’kul’ in May

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

In May, Isil’kul’ 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 Isil’kul’ 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 Isil’kul’ peaks around June 22 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 22UV 6Dec 22UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5Moderate
Jun6High
Jul6High
Aug4Moderate
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low

Air quality in Isil’kul’ 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 Isil’kul’ is worst in April — around 16 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (December, 4 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1715 µg/m³Dec 224 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb7Good
Mar9Good
Apr16Moderate
May10Good
Jun8Good
Jul13Moderate
Aug8Good
Sep6Good
Oct8Good
Nov7Good
Dec4Good
Location & terrain

Where is Isil’kul’?

Isil’kul’ sits at 54.9°N, 71.3°E, 118 m above sea level, in Russia. The nearest listed city is Omsk, 134 km away.

Topography around Isil’kul’

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

Within 3 km, the terrain around Isil’kul’ has only modest variations in elevation — a maximum elevation change of 22 m around an average of 126 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 43 m; within 80 km, only modest variations in elevation — a maximum elevation change of 100 m.

The land around Isil’kul’ is covered by grassland (36%) and artificial surfaces (27%) within 3 km, cropland (61%) within 16 km, and cropland (49%) and grassland (31%) within 80 km.

3 km
22 m
16 km
43 m
80 km
100 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Omsk 134 km · Petropavl 136 km · Ishim 174 km · Akkol’ 210 km · Kalachinsk 212 km · Kokshetau 219 km · Shchuchinsk 231 km · Makinsk 260 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 Isil’kul’ (54.9121°, 71.2718°, elevation 118 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).