Mongolia Weather in August

What is the Weather like in Mongolia in August?

Mongolia weather in August is characterized by warm and pleasant day, cool night, abundant sunlight and low precipitation. It rains lightly in most time, but heavy ones are also possible. Due to large temperature difference between days and nights and between sunny days and rainy days, several layers of clothes should be prepared.

Moderate Temperature with Large Difference

Average High Temperature: 23℃ (73℉)
Average Low Temperature: 10℃ (50℉)

Normally, the high temperature fluctuates between 20 and 25 degrees Celsius (68-77 degrees Fahrenheit), and the low ranges from 5 to 15 ℃ (41-59℉). The extreme highest temperature hovers around 30℃ (86℉) only and very occasionally, so the weather of Mongolia in August is pleasantly warm instead of scorching in the day and cool at night.

In addition to the large day-night temperature difference, the temperature is greatly influenced by rainfall. When it rains, the temperatures can decrease largely. For instance, the high temperature in Ulaanbaatar can decrease by 8 -10℃ (46-50℉) in rainy days. In view of the large temperature difference, visitors had better prepare both thin summer clothes and a jacket.

Relatively Frequent Showers, Possible Hailstone and Heavy Rain

Precipitation: 86mm (3.4 in)
Average Rainy Days: 16 days

In August, Mongolia remains in its local rainy season, but the precipitation is relatively low compared with the worldwide destinations. In 16 rainy days, showers and drizzles are most commonly seen and usually short-time, which can bring down the dust in air and make it fresher. You can choose to conduct indoor activities instead to escape the rainy time, and go out to breathe the fresh air after rain. However, heavy rain might occur, usually in form of thunderstorms, lasting only for hours or dozens of minutes. Hailstone is possible as well, but very occasional.

Rainy Mongolia in August

Abundant Sunlight

Sunrise: 5:42 - 6:21
Sunset: 19:48 - 20:39
UV index: 7 (High)
Daylength: 13h27m - 14h56m
Average Sunlight Hours: 8 hours per day

Though the daylength and average sunlight hours start to shorten in August, the daytime remains ample for visitors to go sightseeing and the sunshine still bright and abundant.

Azure Sky and White Clouds in August

In different periods of a day, the sun will cast diverse sunlight, being vibrant in the morning, blazing around noon and gentle at dusk. But it by no means implies that sun-protective items are unnecessary. You still need to wear sunglasses and sunscreen hats around noon. The sky also presents virous colors in different times influenced by the sunlight, being baby blue, azure, sapphire blue, orange or red.

Averages for Mongolia Weather in August

High Temperature

23°C (73.4°F)

Low Temperature

10°C (50°F)

Rainfall

86 mm (3.4 in)

Sunrise

05:42 ~ 06:21

Sunset

19:48 ~ 20:39

Jan.Feb.Mar.Apr.May.Jun.Jul.Aug.Sep.Oct.Nov.Dec.

The times for sunrise and sunset are based on Ulaanbaatar.

Is August a Good Time to Visit Mongolia?

Certainly yes!

August is listed as one of the best months to visit Mongolia since the weather of Mongolia in August is pleasantly warm and cozy with moderate temperature, abundant sunlight, and relatively low precipitation. You are free from scorching hot and severely cold when visiting outdoor scenic spots. The relatively long daytime also allows the visitors to arrange more activities in one day. More importantly, the natural scenery in August is breathtaking and fascinating as the grassland and forest remain in their best and lushest time. Besides, it is less crowded than July and you can enjoy the same wonderful attractions more pleasantly.

Mongolian Vibrant Grassland in August

What to Bring if Visit Mongolia in August?

Upper body: During daytime, T-shirts with sunscreen coats or thin long-sleeved shirts will be a good match. But when it comes to nighttime when the temperature drops sharply, you need to put on hoodies or thick coats like trench coats and leather jackets.

Lower body: Loose jeans and sweatpants are most suggested. You can also choose to wear shorts and summer dresses, but only around sunny noon in urban areas. Even though, when you plan to visit religious sites like Gandan Temple in Ulaanbaatar, you had better wear long trousers to show respect to local customs.

Shoes: You should prepare lightweight and comfortable sneakers for long-time walking. Considering the possible rainfall, the shoes had better be non-slip and rainboots might be in need if you happen to visit grassland on or after the heavily rainy days.

Others: Sun-protective items like sunglasses, sunscreen hats and cream are necessary to protect you from heatstroke and sunburn. Mosquito repellent products should be prepared since bugs and mosquitos are rampant in August, especially on the grassland. You might also need raingear, such as umbrellas and raincoats.

Travel Recommendations and Tips for Mongolia in August

1. If you are going to visit Northern Mongolia in August 2026, you need to prepare thicker clothes like thin down coat and 3-in-1 windbreaker since the temperature is much lower especially at nighttime, even in summer.

2. In August, Tsaatan people has migrated out from deep mountains and visitors could find them more easily without much trudging. You can take the chance to visit Tsaatan Reindeer Tribe and ride the reindeers. But be sure to prepare a power bank and follow your guide closely since cellphone signal is poor and there is no electricity supplied.

If you plan to visit Mongolia in August, 2026, then click Best Private Mongolia Tours.

August Weather of Major Mongolia Cities

August	Temperature		Sunrise / Sunset	Humidity (%)
	Temperature
	High	Low
Altay	34°C/ 93.2°F	16°C / 60.8°F	06:25/ 19:32	44
Baruun-Urt	33°C / 91.4°F	15°C / 59°F	06:20/ 20:07	74
Bayanhongor	33°C / 91.4°F	12°C / 53.6°F	06:56/ 20:38	79
Bulgan	30°C / 86°F	15°C / 59°F	06:45/ 20:30	53
Choybalsan	29°C / 84.2°F	14°C / 57.2°F	06:08/ 20:13	42
Dalanzadgad	33°C / 91.4°F	13°C / 55.4°F	06:23/ 20:22	73
Darkhan	28°C / 82.4°F	8°C / 46.4°F	06:41/ 19:34	79
Erdenet	25°C / 77°F	13°C / 55.4°F	06:51/ 20:35	75
Khovd	25°C / 77°F	12°C / 53.6°F	06:58/ 20:36	72
Mandalgovi	29°C / 84.2°F	14°C / 57.2°F	06:44/ 20:48	57
Ulaanbaatar	23°C / 73.4°F	9°C / 48.2°F	06:29/ 21:28	63