Climate and average weather in Zima

In Zima, the summers are warm, showery, and partly cloudy and the winters are frigid, snowy, and mostly cloudy.

Best: mid May to early September

Over the course of the year, the temperature in Zima typically varies from -26°C to 25°C, and is rarely below -37°C or above 31°C. July is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit Zima for warm-weather activities is from mid May to early September.

Hottest
Jul
25°
Coldest
Jan
-26°
Wettest
Jul
79 mm
Driest
Feb
6 mm
Rain / yr
413 mm
84 wet days
Daylight
7.1–16.9 h
shortest–longest
Elevation
454 m
53.9°N
Clearest
Aug
63% cloud

Zima is town in Irkutsk Oblast, Russia.

Density
617/km²
people per km²
Founded
1743

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Zima weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid May to early September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Zima, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 4.4 months, from May 6 to September 16, with daily high temperatures above 14°C. The hottest month of the year in Zima is July, with an average high of 25°C and low of 13°C.

The cool season lasts 3.0 months, from November 22 to February 19, with daily high temperatures below -9°C. The coldest month of the year in Zima is January, with an average low of -26°C and high of -17°C.

Days typically run about 11°C warmer than nights, with the widest day–night swing (around 13°C) in May.

-40°-20°20°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan-17-25
Feb-11-22
Mar-1-13
Apr9-3
May173
Jun2310
Jul2513
Aug2211
Sep144
Oct5-4
Nov-7-15
Dec-15-23

How hot and cold Zima really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the coldest nights, wind chill pulls the feels-like down to about -33°C (around January 7), with roughly 236 freezing days a year (feels-like at or below 0°C) 165 of them bitterly cold — worst in January.

-30°-20°-10°10°20°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan-17-17-33-25
Feb-11-11-29-22
Mar-1-1-19-13
Apr99-7-3
May171713
Jun2323910
Jul25251313
Aug22221011
Sep141414
Oct55-8-4
Nov-7-7-21-15
Dec-15-15-30-23

Average hourly temperature in Zima

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on July afternoons, near 25°C, and coldest before dawn in January, near -26°C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Zima weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-17° / -26°62.14.17.70.0
Feb-11° / -22°62.24.19.40.0
Mar-1° / -14°103.54.511.50.0
Apr / -3°226.33.413.71.8
May17° / 4090.915.75.3
Jun23° / 10°6811.1016.86.5
Jul25° / 13°7912016.36.5
Aug22° / 11°7610.7014.66.4
Sep14° / 5610.30.612.54.2
Oct / -4°236.63.610.20.7
Nov-7° / -15°145.36.98.30.0
Dec-15° / -23°134.56.77.20.0

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Zima gets about 413 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.

The wetter season lasts 5.7 months, from around Apr 20 to Oct 8, peaking in July at about 39% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 19.

July is the wettest month by volume, with 79 mm over about 12 wet days; February is the driest, with 6 mm. Some of the cold-season precipitation falls as snow.

0%10%20%30%40%50%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetJul 23 · 39%Jan 19 · 6%
Rain on a day (%)Rain days
Jan72
Feb82
Mar124
Apr216
May309
Jun3711
Jul3812
Aug3511
Sep3310
Oct227
Nov175
Dec155

Monthly rainfall

Over a full year, Zima collects about 413 mm of rain across 84 wet days — roughly 34 mm in an average month.

It doesn’t fall evenly. July is the wettest month with 79 mm, while February is the driest at just 6 mm. The three wettest months alone bring about 54% of the year’s total, and some of the cold-season precipitation falls as snow.

0255075100JanFebMarAprMayJunJulAugSepOctNovDec6610224068797656231413
Rainfall (mm)Rain daysSnow days
Jan624
Feb624
Mar1045
Apr2263
May4091
Jun68110
Jul79120
Aug76110
Sep56101
Oct2374
Nov1457
Dec1357

Snow in Zima

Average snowy days through the year, the snow-season span, and estimated snowfall — for ski trips and the perennial 'will there be snow at Christmas?' question.

Zima averages about 35 snowy days a year. Snow season runs roughly Sep 14 to May 24 — about 8.3 months.

November is snowiest, with roughly 7 days of snow and an estimated 17 cm of snowfall. Over the year that adds up to an estimated 101 cm of snow.

0246810JanFebMarAprMayJunJulAugSepOctNovDecsnow seasonsnow seasonNov 26
Snow daysSnowfall (cm)
Jan410
Feb412
Mar514
Apr312
May13
Jun00
Jul00
Aug00
Sep12
Oct411
Nov717
Dec720

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Zima, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.

The clearer part of the year begins around May 10 and lasts for 5.5 months, ending around October 23. The clearest month is June, when the sky is clear, mostly clear, or partly cloudy 42% of the time on average.

The cloudier part of the year begins around October 24 and lasts for 3.3 months, ending around January 30. The cloudiest month is December, when it is overcast or mostly cloudy 80% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJun 21 · 43%Dec 5 · 17%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2872
Feb3169
Mar3466
Apr2872
May3565
Jun4258
Jul4060
Aug4258
Sep3862
Oct3565
Nov2674
Dec2080

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 19, brings about 16 h 54 min of light; the shortest, around December 18, only 7 h 06 min — a swing of roughly 9 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan7.79:315:12
Feb9.48:456:08
Mar11.57:387:05
Apr13.76:208:04
May15.75:178:59
Jun16.84:479:37
Jul16.35:069:29
Aug14.65:578:35
Sep12.56:537:19
Oct10.27:506:04
Nov8.38:505:04
Dec7.29:334:43

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Zima averages about 6 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 3 and 8 days.

The sunnier stretch runs 5.3 months, from around May 16 to Oct 22. The sunniest month is August, with roughly 7 sunny days (gloomy).

The greyest month is December, down near 3 sunny days — about 54% fewer than the August peak.

0510JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedAug 248 daysDec 43 days
Sunny daysSky
Jan5Gloomy
Feb6Gloomy
Mar7Gloomy
Apr5Gloomy
May6Gloomy
Jun7Gloomy
Jul7Gloomy
Aug8Gloomy
Sep7Gloomy
Oct6Gloomy
Nov5Gloomy
Dec3Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Zima, how humid it feels changes noticeably over the year.

The more humid part of the year lasts 2.1 months, from around June 17 to August 19. The muggiest month is July, when the air feels humid, muggy or worse about 19% of the time.

The most comfortable stretch runs from around August 20 to June 16, and May is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecMay 25 · 100%Jul 20 · 78%humidcomfortabledrycomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)Muggy (%)
Jan100000
Feb100000
Mar100000
Apr100000
May100000
Jun831430
Jul4735181
Aug702550
Sep99100
Oct100000
Nov100000
Dec100000

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Wind in Zima is steady company: average speeds sit near 9 km/hcalm — in every month of the year, with no meaningful windy or calm season.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeApr 21 · 11 km/hJan 10 · 8 km/h
Wind speed (km/h)Feels
Jan8calm
Feb9calm
Mar10calm
Apr11calm
May11calm
Jun9calm
Jul9calm
Aug9calm
Sep10calm
Oct9calm
Nov9calm
Dec9calm

Best time to visit Zima

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Zima throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around late May, Zima is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Zima for general outdoor tourist activities is from mid May to early September, with a peak score in the first week of August.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationAug 5 · 6.7

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan0.0poor
Feb0.0poor
Mar0.0poor
Apr1.8poor
May5.2fair
Jun6.5good
Jul6.5good
Aug6.4good
Sep4.2fair
Oct0.8poor
Nov0.0poor
Dec0.0poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Zima for hot-weather activities is from mid June to mid August, with a peak score in the second week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 11 · 5.8

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Zima, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

For a warm-season trip around July (highs near 25°C), the essentials are light clothes, rain gear and sun protection. In the cold season around January (highs near -17°C), pack a warm layer and a heavy coat.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In July, Zima sees daytime highs around 25°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

UV index (midday) in Zima by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Zima peaks around July 11 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 11UV 6Dec 19UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar2Low
Apr4Moderate
May5High
Jun6High
Jul6High
Aug5Moderate
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low

Average hourly UV index in Zima

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in July the burn window is concentrated in the middle of the day: about 7.5 hours a day reach index 3 (protection recommended), and 1.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan00
Feb00
Mar00
Apr4.50
May6.50
Jun7.50
Jul7.51.5
Aug60
Sep30
Oct00
Nov00
Dec00

Air quality in Zima by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Zima is worst in May — around 24 µg/m³ PM2.5 (moderate), about 8.2× the cleanest month (December, 3 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1223 µg/m³Dec 143 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb6Good
Mar7Good
Apr21Moderate
May24Moderate
Jun12Good
Jul15Moderate
Aug13Moderate
Sep7Good
Oct7Good
Nov4Good
Dec3Good
Almanac & agriculture

Growing season

Chance of a frost-free dayTypical season (≥50%)

The growing season in Zima typically lasts about 153 days, from around April 30 to September 29 — the span where a frost-free day is more likely than not. It is reliably frost-free from May 24 to September 13.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecgrowing seasonApr 210%Apr 3050%May 2490%Sep 1390%Sep 2950%Oct 2110%
Frost-free chance (%)Frost nights
Jan031
Feb028
Mar431
Apr2530
May7823
Jun990
Jul1000
Aug1000
Sep8216
Oct1931
Nov330
Dec031

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Zima banks about 715 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.

0200400600800JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan0
Feb0
Mar0
Apr0
May29
Jun195
Jul277
Aug197
Sep18
Oct0
Nov0
Dec0

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Zima receives about 3.4 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 0.7 and 6.1 kWh/m².

The brighter stretch of the year lasts 6.0 months, from around Mar 13 to Sep 12. The brightest month is June, averaging about 6.0 kWh/m² (intense).

The dimmest month is December, down near 0.7 kWh/m² — roughly 88% less than the June peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseJun 56.1 kWhDec 190.7 kWh
Solar energy (kWh/m²)Level
Jan1.0Dim
Feb2.0Moderate
Mar3.6Moderate
Apr4.9Bright
May5.9Bright
Jun6.1Intense
Jul5.5Bright
Aug4.7Bright
Sep3.3Moderate
Oct2.0Moderate
Nov1.1Dim
Dec0.7Dim

Where is Zima?

Zima sits at 53.9°N, 102.0°E, 454 m above sea level, in Russia. The nearest listed city is Sayansk, 23 km away.

Topography around Zima

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

Within 3 km, the terrain around Zima has only modest variations in elevation — a maximum elevation change of 30 m around an average of 457 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 170 m; within 80 km, significant variations in elevation — a maximum elevation change of 452 m.

The land around Zima is covered by grassland (42%), trees (26%) and artificial surfaces (21%) within 3 km, trees (48%) and grassland (40%) within 16 km, and trees (61%) and grassland (23%) within 80 km.

3 km
30 m
16 km
170 m
80 km
452 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
Nearby: Sayansk 23 km · Cheremkhovo 110 km · Tulun 119 km · Usol’ye-Sibirskoye 168 km · Angarsk 196 km · Nizhneudinsk 224 km · Shelekhov 234 km · Irkutsk 235 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 Zima (53.9202°, 102.0442°, elevation 454 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).