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Ulan-Ude weather by month: averages, rainfall & climate trends

Ulan-Ude swings through a wide annual range, with 42.4°C between the monthly means of its warmest and coldest months. Rainfall is on the low side overall. Ulan-Ude weather by month: average temperatures, rainfall, extremes and how the climate has changed since 1940.

Today vs average

−4.2°Chigh well below average

1° / −4°Today
5° / −5°Average
see today in detail →

How it's changed

+1.8°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–49205frost days a year now (2016–2025) · 207 in the 1940sfrost days a year · 207 in the 1940s15days above 30°C a year now (2016–2025) · 6 in the 1940sdays above 30°C · 6 in the 1940s+1.8°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 7 mmhigh −16°low −29°February, rain 7 mmhigh −11°low −27°March, rain 10 mmhigh −1°low −16°April, rain 19 mmhigh 9°low −3°May, rain 31 mmhigh 17°low 4°June, rain 52 mmhigh 24°low 11°July, rain 71 mmhigh 26°low 14°August, rain 71 mmhigh 23°low 12°September, rain 45 mmhigh 16°low 5°October, rain 21 mmhigh 7°low −4°November, rain 18 mmhigh −5°low −15°December, rain 14 mmhigh −14°low −24°wettest month July, 71 mm · 365 mm a yearsee month by month →

Right now

What it's doing today vs the historical average for this date.
Partly cloudy

Right now

−3.7°

−8°feels like
80%humidity
−7°dew point
11 km/hfrom NW
UV index0.0
sunrise07:22sunset17:46day length10h 24m
TuePartly cloudy1°−4°
WedClear5°−4°
ThuOvercast5°−1°
FriOvercast3°−1°
SatOvercast1°−4°
SunOvercast−1°−7°
MonPartly cloudy−3°−7°

On this date: October 19

Today (forecast)
1° / −4°
Average for October 19
5° / −5°

High well below average · −4.2°C

  • Highest since 1940: 15.1° · 1977
  • Lowest since 1940: −18.7° · 1961
  • One year ago: 2° / −11°

Every October 19 in history, coldest to hottest

▲ Daily highs▼ Daily lows

Dots show daily highs (top) and lows (bottom) for each October 19 on record (n = 87). Outlined dots are today's forecast.

Area we sample

Each city's history comes from one ERA5 grid cell, about 28 km across, shown by the dashed box. Near mountains or coasts, conditions can vary across the cell.

Location & data

Historical weather for Ulan-Ude is sampled from the ECMWF ERA5 reanalysis at 51.83°N, 107.60°E, with daily records since 1940.

Coordinates
51.83°N, 107.60°E
Time zone
Asia/Irkutsk
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

17 of the last 31 days were warmer than the historical average for that date. Average difference: +0.5°C.

Each bar is one day, from morning low to afternoon high. Warm-colored bars are days whose mean ran above average; cool bars ran below. The dot inside the bar is the daily mean. The shaded band is the typical 10–90% range expected for that date. Average = the day's mean temperature averaged across every year of record (1940–2026) for that calendar date.

This date over the years

One dot per year, showing the mean temperature on this calendar date. Dots are warmer or cooler than the long-term average (dashed line); the shaded band is the typical 10–90% range, and the highlighted dot is today's forecast. Based on ERA5 reanalysis: modelled estimates, not station readings.

Weather by month

Average temperatures and rainfall for each month: a typical year, from the full record.

Climate overview

The warmest month is July, with typical afternoon highs of 25.6°C and nights around 14.2°C. At the other extreme, January brings afternoon highs of about −16.4°C and typical overnight lows of −28.5°C. Frost shows up on around 205 mornings a year.

In total, Ulan-Ude averages about 365 mm of precipitation a year; July is usually the wettest month (71 mm) and February the driest (7 mm).

Comparing the record's first decade with its most recent one, Ulan-Ude now averages 1.8°C warmer than it did in the 1940s. Days above 30°C have grown noticeably more frequent, from around 6 a year in the first decade to about 15 in the last.

Climate graph (climograph)

July is the warmest month, January the coolest: a yearly swing of 42°C. Wettest month: July (~71 mm). Whole year averages ~365 mm of rain.

Bars = average monthly rainfall (right axis). Lines = average daily high and low (left axis). Average = each month's value averaged across every year of record (1940–2026).

Rainy days by month

About 44 rainy days a year: most in July (~8), fewest in January (almost none).

Bars = average number of days with ≥ 2 mm per month. Hover for the monthly rainfall total.

Monthly wind

Average daily peak wind at 10 m, by month.

Monthly solar energy

Average daily incoming solar energy in megajoules per square metre: the record's own proxy for how sunny the month is.

Ulan-Ude month by month: what to expect

Typical conditions for each month, averaged across the full record (since 1940). Daylight is the time from sunrise to sunset. Highest and Lowest are the most extreme values in the ERA5 dataset (modelled since 1940), so they can differ from official weather-station readings.

MonthAvg highAvg lowRainRainy daysDaylightHighestLowest
January−16.4°−28.5°7 mm08.0 h0.5° (2002)−44.0° (1951)
February−11.0°−26.5°7 mm09.7 h7.4° (1987)−43.1° (2006)
March−0.7°−16.4°10 mm111.5 h21.1° (2023)−36.9° (1957)
April9.1°−3.4°19 mm313.6 h28.5° (2015)−29.5° (1984)
May17.4°3.5°31 mm415.4 h36.4° (2017)−6.4° (1977)
June23.9°10.7°52 mm616.4 h38.8° (1989)−3.7° (1992)
July25.6°14.2°71 mm816.0 h40.5° (1999)4.8° (1978)
August23.1°11.9°71 mm814.4 h37.3° (2015)−0.2° (2017)
September16.1°4.5°45 mm612.4 h31.1° (2007)−6.8° (1958)
October6.8°−4.0°21 mm310.3 h24.0° (1986)−23.4° (1976)
November−5.2°−15.4°18 mm28.5 h11.4° (2006)−37.1° (1947)
December−14.1°−24.4°14 mm17.6 h2.6° (2021)−43.3° (1952)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +1.8°C.

Each vertical stripe is one year. Color encodes how much that year's annual mean differed from the long-term average. Average = each year's annual mean compared to the average of all years (1940–2026). cooler ← → warmer

Annual mean temperature

Long-term trend: +0.23°C per decade.

One point per year, showing the temperature averaged across the whole year. The dashed line is the least-squares long-term trend. Based on ERA5 reanalysis: modelled estimates, not station readings.

Seasonal warming

Mar–May is warming fastest: +0.38°C per decade.

Each faint line is one three-month period's average per year; the bold dashed line is its long-term trend. Different parts of the year often warm at different rates. Based on ERA5 reanalysis: modelled estimates, not station readings.

Hot days vs frost days

Days ≥ 30°C per year: 6.1 early in the record → 15.4 recently. Frost days: 207 → 205.

Thin lines are raw yearly counts; thick lines are the smoothed trend that removes year-to-year noise. The hot-day threshold is auto-picked per city so the line actually moves. Average = a centered 5-year rolling average to smooth weather noise.

Yearly hot & cold extremes

Hottest day since 1940 in 1999, coldest in 1951: 40.5°C / −44.0°C.

One point per year: the single hottest and coldest day recorded that year.

Annual rainfall

~365 mm/year on average. Last decade: −5% vs that average. Long-term trend: −2 mm per decade.

One bar per year of total rainfall. Dashed line is the long-term average. Average = the average annual rainfall across every year of record (1940–2026).

Day-by-day grid

Each tiny square is one calendar day across the full record, about 30,000 days per city. Use the mode switch above the chart: Anomaly colors each day by how far it ran from the historical average for that date (red = warmer, blue = cooler), Daily mean temp shows the absolute mean temperature for the day (useful to see seasons and heatwaves), and Precipitation shows daily rainfall (useful to spot wet/dry seasons and droughts). Average = the long-term average for that calendar date (1940–2026).

Frequently asked questions about Ulan-Ude

Which is the warmest month in Ulan-Ude?
On long-term average, the warmest month in Ulan-Ude is July (mean daily temperature of about 20.0°C) and the coolest is January (about −22.4°C).
How does today's temperature in Ulan-Ude compare to the historical average?
On October 19, 2026, Ulan-Ude is forecast to reach a high of 1.3°C and a low of −3.9°C. The long-term average for this date (the full record since 1940) is a high of 5.5°C and a low of −4.9°C, so today's high is 4.2°C cooler than that average.
How much has Ulan-Ude warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in Ulan-Ude is about 1.8°C warmer.
How much does it rain in Ulan-Ude?
Ulan-Ude receives about 365 mm of precipitation per year on long-term average, with July typically the wettest month.
What is the average temperature in Ulan-Ude?
Over the full record (since 1940), the annual mean temperature in Ulan-Ude is about 0.2°C. The warmest month is July and the coolest is January.
What are the average temperatures in Ulan-Ude by month?
Average daily highs and lows for each month in Ulan-Ude (°C, full record since 1940): January −16°/−29°, February −11°/−27°, March −1°/−16°, April 9°/−3°, May 17°/4°, June 24°/11°, July 26°/14°, August 23°/12°, September 16°/5°, October 7°/−4°, November −5°/−15°, December −14°/−24°.
What is the weather like in Ulan-Ude in summer?
In summer, June through August, Ulan-Ude is pleasantly warm. Afternoons run 23–26°C and nights 11–14°C; July is the warmest month. Rain falls on about 7 days a month, adding up to around 65 mm. It is the wettest season of the year.
What is the weather like in Ulan-Ude in winter?
December to February is winter in Ulan-Ude, and it is freezing. Expect −16 to −11°C by day and −29 to −24°C at night, with January the coldest month. Almost no snow or rain.
What is the weather like in Ulan-Ude in spring?
In spring, March through May, Ulan-Ude is on the cool side. March starts at −1°C by day and −16°C at night; by May it is 17°C and 4°C. Rain and snow rise from 10 mm on 1 day in March to 31 mm on 4 days in May.
What is the weather like in Ulan-Ude in autumn?
In autumn, September through November, Ulan-Ude is cold. September is still 16°C by day and 5°C at night; by November it is down to −5°C and −15°C. Rain and snow fall off from 45 mm on 6 days in September to 18 mm on 2 days in November.
How many days a year does it rain in Ulan-Ude?
On long-term average, Ulan-Ude has about 44 days a year with at least 2 mm of rain or snow. The annual total is roughly 365 mm.

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