Mongolia Weather & Climate 2026

Dwb Warm-Summer Continental (monsoon)

Monthly climate averages for Ulan Bator. Based on 10-year ERA5 reanalysis data.

January February March April May June July August September October November December

Climate Overview

Mongolia experiences average highs of 6°C (43°F) and lows of -6°C (21°F) throughout the year. The climate is relatively dry, with only 6 rainy days per month on average. Sunshine is abundant, averaging about 10 hours per day. Average highs have warmed by 1.1°C (2.0°F) across the available records.

Drier season: Jan–Dec Wetter season: May–Sep

At-a-Glance Climate Summary

Jan 2.9/10 Feb 3.1/10 Mar 2.9/10 Apr 2.7/10 May 5.8/10 Jun 7.5/10 Jul 7.9/10 Aug 7.9/10 Sep 5.6/10 Oct 2.9/10 Nov 2.5/10 Dec 3/10

Key figures

Climate Score
4.6/10
Best: June, July, August
UV Index
—
Low
Temperature 6°C / -6°C
Feels Like 3°C / -9°C
Rainy Days 6
Rainfall 28 mm
Sunshine 10 h
Humidity 64%
Wind Speed 15 km/h
Dew Point -6°C
Snow Days 4 days
Frost Days 23 days
Best Time to Visit
JFMAMJJASOND
Recommended
Hottest Month
24°C
July
Avg Low13°C
Rain13days
Coldest Month
-25°C
December
Avg High-15°C
Rain1days
Driest Month
1days
January
Avg High-14°C
Avg Low-26°C
Windiest Month
20 km/h
April (Gusts 45)

Worst Time to Visit

Consider avoiding January, March, April, November due to very cold temperatures.

LIVE Current Weather Local Time
LIVE Air Quality
Sun Position
Sunrise 04:54
Daylight 16h
Sunset 20:54

Showing the live 14-day forecast for Ulan Bator, not a single forecast for all of Mongolia.

14-Day Forecast

LIVE
View full 14-day forecast →

City forecasts

14-day forecasts for major cities in Mongolia

Weather changes by city, coast, elevation, and region. Use these live previews for populated places in Mongolia, then open a city page for the full forecast.

Ulan Bator

Population: 844.8K

LIVE

Loading forecast…

——
High
—
Low
—
Rain chance
—
Open city forecast

Erdenet

Population: 97.8K

LIVE

Loading forecast…

——
High
—
Low
—
Rain chance
—
Open city forecast

Darhan

Population: 83.9K

LIVE

Loading forecast…

——
High
—
Low
—
Rain chance
—
Open city forecast

Choibalsan

Population: 44.8K

LIVE

Loading forecast…

——
High
—
Low
—
Rain chance
—
Open city forecast

Nalayh

Population: 39.6K

LIVE

Loading forecast…

——
High
—
Low
—
Rain chance
—
Open city forecast

Mörön

Population: 39.4K

LIVE

Loading forecast…

——
High
—
Low
—
Rain chance
—
Open city forecast

Seasonal Breakdown

Spring
Mar–May
Avg High 9°C
Avg Low -4°C
Rain 4 days/mo
Summer
Jun–Aug
Avg High 22°C
Avg Low 11°C
Rain 12 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 6°C
Avg Low -5°C
Rain 5 days/mo
Winter
Dec–Feb
Avg High -13°C
Avg Low -25°C
Rain 1 days/mo

Based on historical averages (2016–2025)

Monthly Temperatures

36°C 30°C 24°C 18°C 12°C 6°C 0°C -6°C -12°C -18°C -24°C -30°C -36°C JanFebMarAprMayJunJulAugSepOctNovDec
HighLowShaded bands show the typical range across the available yearly records.

Monthly Rainfall

0 mm 15 mm 30 mm 45 mm 60 mm 75 mm 90 mm JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall

Monthly Humidity

0% 25% 50% 75% 100% JanFebMarAprMayJunJulAugSepOctNovDec
Humidity

Monthly Wind Speed

0 15 30 45 60 JanFebMarAprMayJunJulAugSepOctNovDec
Wind SpeedGusts

Sunshine

0 3 6 9 12 15 JanFebMarAprMayJunJulAugSepOctNovDec
Sunshine

Monthly Daylight Hours

17h 15h 13h 11h 9h 7h JanFebMarAprMayJunJulAugSepOctNovDec
Daylight12h reference

Monthly Dew Point & Comfort

28°C 24°C 20°C 16°C 12°C 8°C 4°C 0°C -4°C -8°C -12°C -16°C -20°C -24°C -28°C JanFebMarAprMayJunJulAugSepOctNovDec
Dew Point Dry Comfortable Humid Muggy Oppressive

Snow Days

0 2 4 6 8 10 JanFebMarAprMayJunJulAugSepOctNovDec
Snow DaysSnowfall

Month-by-Month Weather Table

January
Poor
Temp
-14°C / -26°C
Feels Like
-19°C / -31°C
Rain
1days (2 mm) Excellent
Sun
7.8h Good
Humidity
74% Muggy
Snow Days
3days
View Details
February
Poor
Temp
-10°C / -23°C
Feels Like
-15°C / -28°C
Rain
1days (3 mm) Excellent
Sun
9.4h Good
Humidity
70% Muggy
Snow Days
4days
View Details
March
Poor
Temp
1°C / -12°C
Feels Like
-4°C / -17°C
Rain
3days (8 mm) Excellent
Sun
10.7h Excellent
Humidity
55% Moderate
Snow Days
7days
View Details
April
Poor
Temp
10°C / -3°C
Feels Like
5°C / -8°C
Rain
4days (16 mm) Good
Sun
11.5h Excellent
Humidity
45% Moderate
Snow Days
6days
View Details
May
Fair
Temp
16°C / 3°C
Feels Like
12°C / -1°C
Rain
6days (29 mm) Good
Sun
12h Excellent
Humidity
50% Moderate
Snow Days
4days
View Details
June best
Excellent
Temp
22°C / 9°C
Feels Like
20°C / 7°C
Rain
10days (53 mm) Wet
Sun
12.4h Excellent
Humidity
60% Moderate
Snow Days
1days
View Details
July best
Excellent
Temp
24°C / 13°C
Feels Like
24°C / 12°C
Rain
13days (77 mm) Wet
Sun
11.4h Excellent
Humidity
68% Muggy
View Details
August best
Excellent
Temp
21°C / 11°C
Feels Like
20°C / 10°C
Rain
12days (81 mm) Wet
Sun
10.8h Excellent
Humidity
73% Muggy
View Details
September
Fair
Temp
17°C / 5°C
Feels Like
14°C / 2°C
Rain
8days (39 mm) Wet
Sun
10.1h Excellent
Humidity
66% Muggy
Snow Days
2days
View Details
October
Poor
Temp
7°C / -5°C
Feels Like
2°C / -10°C
Rain
3days (14 mm) Excellent
Sun
9.1h Good
Humidity
62% Muggy
Snow Days
6days
View Details
November
Poor
Temp
-4°C / -16°C
Feels Like
-9°C / -20°C
Rain
4days (11 mm) Good
Sun
7.9h Good
Humidity
71% Muggy
Snow Days
7days
View Details
December
Poor
Temp
-15°C / -25°C
Feels Like
-20°C / -30°C
Rain
1days (4 mm) Excellent
Sun
7.4h Good
Humidity
73% Muggy
Snow Days
4days
View Details
Month Temp Feels Like Rain Sun Humidity Status
January -14°C / -26°C -19°C / -31°C 1days (2 mm) Excellent 7.8h Good 74% Muggy Poor View Details
February -10°C / -23°C -15°C / -28°C 1days (3 mm) Excellent 9.4h Good 70% Muggy Poor View Details
March 1°C / -12°C -4°C / -17°C 3days (8 mm) Excellent 10.7h Excellent 55% Moderate Poor View Details
April 10°C / -3°C 5°C / -8°C 4days (16 mm) Good 11.5h Excellent 45% Moderate Poor View Details
May 16°C / 3°C 12°C / -1°C 6days (29 mm) Good 12h Excellent 50% Moderate Fair View Details
June best 22°C / 9°C 20°C / 7°C 10days (53 mm) Wet 12.4h Excellent 60% Moderate Excellent View Details
July best 24°C / 13°C 24°C / 12°C 13days (77 mm) Wet 11.4h Excellent 68% Muggy Excellent View Details
August best 21°C / 11°C 20°C / 10°C 12days (81 mm) Wet 10.8h Excellent 73% Muggy Excellent View Details
September 17°C / 5°C 14°C / 2°C 8days (39 mm) Wet 10.1h Excellent 66% Muggy Fair View Details
October 7°C / -5°C 2°C / -10°C 3days (14 mm) Excellent 9.1h Good 62% Muggy Poor View Details
November -4°C / -16°C -9°C / -20°C 4days (11 mm) Good 7.9h Good 71% Muggy Poor View Details
December -15°C / -25°C -20°C / -30°C 1days (4 mm) Excellent 7.4h Good 73% Muggy Poor View Details

Best Time to Visit Mongolia (2026)

Frequently Asked Questions

The best months to visit Mongolia are June, July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Ulan Bator, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Mongolia is July, with average daytime highs of 24°C (75°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Mongolia is December, with average overnight lows of -25°C (-13°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Mongolia is August, averaging 81mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Mongolia runs through July, August, June, with the heaviest rainfall in July. Based on 10-year averages for Ulan Bator.
Mongolia receives approximately 121 sunshine hours per year. The sunniest month is June with around 12 hours. Based on climate data for Ulan Bator.
The least favorable months to visit Mongolia are January, March, April, November, primarily due to very cold temperatures. For the best conditions, consider June, July, August instead.
Average humidity in Mongolia is 64%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Mongolia receives snow. Months with snowfall average 4 snow days and 5 cm (2 in) of accumulation, with about 23 frost days during winter.
Average wind speeds in Mongolia are 15 km/h (9 mph). The windiest month is April with peak winds reaching 20 km/h (12 mph) (gusts up to 45 km/h / 28 mph).
Mongolia averages 7 clear-sky days per month with overall cloud cover around 47%. The clearest skies occur in October.
The annual average dew point in Mongolia is -6°C (21°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Mongolia has a Warm-Summer Continental (monsoon) climate, classified as Dwb under the Köppen system. Continental climates experience extreme temperature ranges — hot summers and cold, snowy winters.
The 'feels like' temperature in Mongolia ranges from -9°C (16°F) to 3°C (37°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Mongolia. It earns a climate score of 7.5/10 with Excellent.
For June in Mongolia, pack Warm evening layer, Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses. With average highs of 22°C (72°F) and 10 rainy days, these essentials will keep you comfortable.

Data Source

Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.

Last updated: