Ulaanbaatar weather in August

In August, Ulaanbaatar sees average daytime highs of 20°C and overnight lows near 9°C, with 68 mm of rain across 10.7 wet days and about 14.1 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 31% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 54 min at the start of August to 13 h 18 min by month's end. Set against the rest of the year, August is Ulaanbaatar's 10th-clearest and 7th-windiest month. For the whole year in context, see Ulaanbaatar's year-round climate.

Daytime high: 20°; 2nd warmest
Overnight low: 9°; 11th coldest
Rainfall: 68 mm; 10.7 wet days
Daylight: 14 h 06 min; 5:53 AM – 8:00 PM
Cloud cover: 58%; 10th clearest
Wind: 9 km/h; 7th windiest
Solar energy: 5.22 kWh/m²
Travel score: 6.2; out of 10

Ulaanbaatar is capital and largest city of Mongolia.

Air quality: Severe; PM2.5 60 µg/m³ · 2019
Density: 180/km²; people per km²
Founded: 1639

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

← July Ulaanbaatar year-round climate September →Best places to visit in August

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 18°C by the end.

A typical August day in Ulaanbaatar reaches about 20°C in the afternoon and slips back to 9°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 26°C. Set against its neighbours, August runs about 2°C cooler than July and about 6°C warmer than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	22	22	21	21	21	21	21	21	21	21	21	21	21	20	20	20	20	20	20	20	20	20	19	19	19	19	19	19	18	18	18
Avg low (°C)	11	11	11	11	11	11	10	10	10	10	10	10	10	10	9	9	9	9	9	9	8	8	8	8	8	8	7	7	7	7	6

	Avg high (°C)	Avg low (°C)
1	22	11
2	22	11
3	21	11
4	21	11
5	21	11
6	21	11
7	21	10
8	21	10
9	21	10
10	21	10
11	21	10
12	21	10
13	21	10
14	20	10
15	20	9
16	20	9
17	20	9
18	20	9
19	20	9
20	20	9
21	20	8
22	20	8
23	19	8
24	19	8
25	19	8
26	19	8
27	19	7
28	19	7
29	18	7
30	18	7
31	18	6

How August really feels in Ulaanbaatar

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Ulaanbaatar weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-17° / -28°	2	0.5	0.7	8.6	0.0
Feb	-11° / -24°	3	1.2	1.5	9.9	0.0
Mar	-2° / -15°	7	2.2	2.7	11.6	0.0
Apr	8° / -5°	16	4.3	3.6	13.4	1.3
May	15° / 1°	35	6.7	3	14.9	4.8
Jun	20° / 8°	55	9.5	0.2	15.7	6.3
Jul	22° / 11°	66	11.2	0	15.4	6.4
Aug	20° / 9°	68	10.7	0	14.1	6.2
Sep	14° / 2°	39	7.2	1.5	12.4	4.6
Oct	5° / -6°	15	3.8	3.3	10.6	0.7
Nov	-7° / -18°	6	2.1	2.6	9	0.0
Dec	-15° / -25°	2	0.9	1.3	8.3	0.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 49%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	48	48	48	47	47	47	47	47	48	48	47	47	48	48	48	48	49	49	49	50	52	52	53	54	55	55	55	56	56	57	57
Cloudier (%)	52	52	52	53	53	53	53	53	52	52	53	53	52	52	52	52	51	51	51	50	48	48	47	46	45	45	45	44	44	43	43

	Clearer (%)	Cloudier (%)
1	48	52
2	48	52
3	48	52
4	47	53
5	47	53
6	47	53
7	47	53
8	47	53
9	48	52
10	48	52
11	47	53
12	47	53
13	48	52
14	48	52
15	48	52
16	48	52
17	49	51
18	49	51
19	49	51
20	50	50
21	52	48
22	52	48
23	53	47
24	54	46
25	55	45
26	55	45
27	55	45
28	56	44
29	56	44
30	57	43
31	57	43

Chance of precipitation in August

Any precipitation

Ulaanbaatar gets around 68 mm of rain over 10.7 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	38	38	38	38	38	38	37	37	37	37	37	37	37	37	37	37	36	36	36	35	34	33	33	32	31	30	29	29	28	28	27

	Rain chance (%)
1	38
2	38
3	38
4	38
5	38
6	38
7	37
8	37
9	37
10	37
11	37
12	37
13	37
14	37
15	37
16	37
17	36
18	36
19	36
20	35
21	34
22	33
23	33
24	32
25	31
26	30
27	29
28	29
29	28
30	28
31	27

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	88	88	89	89	90	90	91	91	92	92	93	93	94	95	95	96	96	97	97	98	98	98	99	99	99	99	100	100	100	100	100
Comfortable (%)	12	12	11	11	10	10	9	9	8	8	7	7	6	5	5	4	4	3	3	2	2	2	1	1	1	1	0	0	0	0	0

	Dry (%)	Comfortable (%)
1	88	12
2	88	12
3	89	11
4	89	11
5	90	10
6	90	10
7	91	9
8	91	9
9	92	8
10	92	8
11	93	7
12	93	7
13	94	6
14	95	5
15	95	5
16	96	4
17	96	4
18	97	3
19	97	3
20	98	2
21	98	2
22	98	2
23	99	1
24	99	1
25	99	1
26	99	1
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

Wind in August

Winds average 9 km/h in August.

Across August, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	9	calm
2	9	calm
3	9	calm
4	9	calm
5	9	calm
6	9	calm
7	9	calm
8	9	calm
9	9	calm
10	9	calm
11	9	calm
12	9	calm
13	9	calm
14	9	calm
15	9	calm
16	9	calm
17	9	calm
18	9	calm
19	9	calm
20	9	calm
21	9	calm
22	9	calm
23	9	calm
24	9	calm
25	9	calm
26	9	calm
27	9	calm
28	9	calm
29	9	calm
30	9	calm
31	9	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 54 min at the start of August to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 96 minutes over August. Sunrise moves from 5:33 AM to 6:14 AM, and sunset from 8:24 PM to 7:31 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	14.9	14.8	14.8	14.7	14.7	14.6	14.6	14.5	14.5	14.4	14.4	14.3	14.3	14.2	14.2	14.1	14.1	14.0	14.0	13.9	13.8	13.8	13.7	13.7	13.6	13.6	13.5	13.5	13.4	13.3	13.3
Sunrise (AM)	5:33	5:34	5:36	5:37	5:38	5:40	5:41	5:42	5:44	5:45	5:46	5:48	5:49	5:50	5:52	5:53	5:55	5:56	5:57	5:59	6:00	6:01	6:03	6:04	6:06	6:07	6:08	6:10	6:11	6:13	6:14
Sunset (PM)	8:24	8:23	8:21	8:20	8:18	8:17	8:15	8:14	8:12	8:10	8:09	8:07	8:05	8:04	8:02	8:00	7:58	7:56	7:54	7:53	7:51	7:49	7:47	7:45	7:43	7:41	7:39	7:37	7:35	7:33	7:31

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.9	5:33	8:24
2	14.8	5:34	8:23
3	14.8	5:36	8:21
4	14.7	5:37	8:20
5	14.7	5:38	8:18
6	14.6	5:40	8:17
7	14.6	5:41	8:15
8	14.5	5:42	8:14
9	14.5	5:44	8:12
10	14.4	5:45	8:10
11	14.4	5:46	8:09
12	14.3	5:48	8:07
13	14.3	5:49	8:05
14	14.2	5:50	8:04
15	14.2	5:52	8:02
16	14.1	5:53	8:00
17	14.1	5:55	7:58
18	14.0	5:56	7:56
19	14.0	5:57	7:54
20	13.9	5:59	7:53
21	13.8	6:00	7:51
22	13.8	6:01	7:49
23	13.7	6:03	7:47
24	13.7	6:04	7:45
25	13.6	6:06	7:43
26	13.6	6:07	7:41
27	13.5	6:08	7:39
28	13.5	6:10	7:37
29	13.4	6:11	7:35
30	13.3	6:13	7:33
31	13.3	6:14	7:31

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.22 kWh/m².

For context, solar energy here swings from a low near 1.49 kWh/m² to a high of 6.52 kWh/m² in May across the year — August's 5.22 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.5	5.5	5.5	5.4	5.4	5.4	5.4	5.4	5.4	5.3	5.3	5.3	5.3	5.3	5.3	5.2	5.2	5.2	5.2	5.2	5.1	5.1	5.1	5.0	5.0	5.0	5.0	5.0	4.9	4.9	4.9
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.5	Bright
2	5.5	Bright
3	5.5	Bright
4	5.4	Bright
5	5.4	Bright
6	5.4	Bright
7	5.4	Bright
8	5.4	Bright
9	5.4	Bright
10	5.3	Bright
11	5.3	Bright
12	5.3	Bright
13	5.3	Bright
14	5.3	Bright
15	5.3	Bright
16	5.2	Bright
17	5.2	Bright
18	5.2	Bright
19	5.2	Bright
20	5.2	Bright
21	5.1	Bright
22	5.1	Bright
23	5.1	Bright
24	5.0	Bright
25	5.0	Bright
26	5.0	Bright
27	5.0	Bright
28	5.0	Bright
29	4.9	Bright
30	4.9	Bright
31	4.9	Bright

Planning a trip in August

Is August a good time to visit Ulaanbaatar?

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

6.2

Sightseeing

3rd-best month of the year

3.3

Beach & pool

3rd-best month of the year

August is a reasonable time to visit Ulaanbaatar for sightseeing.

What to pack for Ulaanbaatar in August

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

In August, Ulaanbaatar sees daytime highs around 20°C and nights near 9°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

UV index in Ulaanbaatar in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ulaanbaatar peaks around July 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 1 (low).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	3	6	7	7	8	8	5	2	1	1
Level	Low	Low	Moderate	High	High	Very high	Very high	Very high	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Low
Mar	3	Moderate
Apr	6	High
May	7	High
Jun	7	Very high
Jul	8	Very high
Aug	8	Very high
Sep	5	Moderate
Oct	2	Moderate
Nov	1	Low
Dec	1	Low

Air quality in Ulaanbaatar in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Ulaanbaatar is worst in July — around 135 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (October, 41 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Ulaanbaatar's WHO annual average of 60 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	56	55	48	48	54	78	135	73	42	41	48	41
Level	Unhealthy	Unhealthy	Poor	Poor	Poor	Unhealthy	Unhealthy	Unhealthy	Poor	Poor	Poor	Poor

	PM2.5 (µg/m³)	Level
Jan	56	Unhealthy
Feb	55	Unhealthy
Mar	48	Poor
Apr	48	Poor
May	54	Poor
Jun	78	Unhealthy
Jul	135	Unhealthy
Aug	73	Unhealthy
Sep	42	Poor
Oct	41	Poor
Nov	48	Poor
Dec	41	Poor

Location & terrain

Where is Ulaanbaatar?

Ulaanbaatar sits at 47.9°N, 106.9°E, 1,284 m above sea level, in Mongolia. The nearest listed city is Zuunmod, 23 km away.

Topography around Ulaanbaatar

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

Within 3 km, the terrain around Ulaanbaatar has only modest variations in elevation — a maximum elevation change of 247 m around an average of 1,304 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,018 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,795 m.

The land around Ulaanbaatar is covered by artificial surfaces (81%) within 3 km, grassland (57%) and artificial surfaces (21%) within 16 km, and grassland (79%) within 80 km.

3 km

247 m

artificial surfaces 81%

16 km

1,018 m

grassland 57%

80 km

1,795 m

grassland 79%

treesgrasslandcroplandartificial surfacesbare terrainwatermoss and lichen

← July Ulaanbaatar year-round climate September →Best places to visit in August

August weather nearby: Zuunmod 23 km · Dzuunmod 23 km · Nalayh 34 km · Dzüünharaa 110 km · Darhan 189 km · Erdenet 241 km · Sühbaatar 263 km · Bulgan 267 km

Mongolia travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / E / F; 220 V · 50 Hz
Prices: ≈ 34% of US; price level, 2025
GDP per capita: $7,108; 2025
Happiness: 5.9 / 10; World Happiness, 2025
Safe drinking water: 43%; of population, 2024
Homicide rate: 5.9; per 100k, 2023
Road deaths: 21; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Very low; EF EPI 447
Religion

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 Ulaanbaatar (47.9077°, 106.8832°, elevation 1,284 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).

	Avg high (°C)	Avg low (°C)
1	22	11
2	22	11
3	21	11
4	21	11
5	21	11
6	21	11
7	21	10
8	21	10
9	21	10
10	21	10
11	21	10
12	21	10
13	21	10
14	20	10
15	20	9
16	20	9
17	20	9
18	20	9
19	20	9
20	20	9
21	20	8
22	20	8
23	19	8
24	19	8
25	19	8
26	19	8
27	19	7
28	19	7
29	18	7
30	18	7
31	18	6

	Clearer (%)	Cloudier (%)
1	48	52
2	48	52
3	48	52
4	47	53
5	47	53
6	47	53
7	47	53
8	47	53
9	48	52
10	48	52
11	47	53
12	47	53
13	48	52
14	48	52
15	48	52
16	48	52
17	49	51
18	49	51
19	49	51
20	50	50
21	52	48
22	52	48
23	53	47
24	54	46
25	55	45
26	55	45
27	55	45
28	56	44
29	56	44
30	57	43
31	57	43

	Rain chance (%)
1	38
2	38
3	38
4	38
5	38
6	38
7	37
8	37
9	37
10	37
11	37
12	37
13	37
14	37
15	37
16	37
17	36
18	36
19	36
20	35
21	34
22	33
23	33
24	32
25	31
26	30
27	29
28	29
29	28
30	28
31	27

	Dry (%)	Comfortable (%)
1	88	12
2	88	12
3	89	11
4	89	11
5	90	10
6	90	10
7	91	9
8	91	9
9	92	8
10	92	8
11	93	7
12	93	7
13	94	6
14	95	5
15	95	5
16	96	4
17	96	4
18	97	3
19	97	3
20	98	2
21	98	2
22	98	2
23	99	1
24	99	1
25	99	1
26	99	1
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

	Avg high (°C)	Avg low (°C)
1	22	11
2	22	11
3	21	11
4	21	11
5	21	11
6	21	11
7	21	10
8	21	10
9	21	10
10	21	10
11	21	10
12	21	10
13	21	10
14	20	10
15	20	9
16	20	9
17	20	9
18	20	9
19	20	9
20	20	9
21	20	8
22	20	8
23	19	8
24	19	8
25	19	8
26	19	8
27	19	7
28	19	7
29	18	7
30	18	7
31	18	6

	Clearer (%)	Cloudier (%)
1	48	52
2	48	52
3	48	52
4	47	53
5	47	53
6	47	53
7	47	53
8	47	53
9	48	52
10	48	52
11	47	53
12	47	53
13	48	52
14	48	52
15	48	52
16	48	52
17	49	51
18	49	51
19	49	51
20	50	50
21	52	48
22	52	48
23	53	47
24	54	46
25	55	45
26	55	45
27	55	45
28	56	44
29	56	44
30	57	43
31	57	43

	Rain chance (%)
1	38
2	38
3	38
4	38
5	38
6	38
7	37
8	37
9	37
10	37
11	37
12	37
13	37
14	37
15	37
16	37
17	36
18	36
19	36
20	35
21	34
22	33
23	33
24	32
25	31
26	30
27	29
28	29
29	28
30	28
31	27

	Dry (%)	Comfortable (%)
1	88	12
2	88	12
3	89	11
4	89	11
5	90	10
6	90	10
7	91	9
8	91	9
9	92	8
10	92	8
11	93	7
12	93	7
13	94	6
14	95	5
15	95	5
16	96	4
17	96	4
18	97	3
19	97	3
20	98	2
21	98	2
22	98	2
23	99	1
24	99	1
25	99	1
26	99	1
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

	Avg high (°C)	Avg low (°C)
1	22	11
2	22	11
3	21	11
4	21	11
5	21	11
6	21	11
7	21	10
8	21	10
9	21	10
10	21	10
11	21	10
12	21	10
13	21	10
14	20	10
15	20	9
16	20	9
17	20	9
18	20	9
19	20	9
20	20	9
21	20	8
22	20	8
23	19	8
24	19	8
25	19	8
26	19	8
27	19	7
28	19	7
29	18	7
30	18	7
31	18	6

	Clearer (%)	Cloudier (%)
1	48	52
2	48	52
3	48	52
4	47	53
5	47	53
6	47	53
7	47	53
8	47	53
9	48	52
10	48	52
11	47	53
12	47	53
13	48	52
14	48	52
15	48	52
16	48	52
17	49	51
18	49	51
19	49	51
20	50	50
21	52	48
22	52	48
23	53	47
24	54	46
25	55	45
26	55	45
27	55	45
28	56	44
29	56	44
30	57	43
31	57	43

	Rain chance (%)
1	38
2	38
3	38
4	38
5	38
6	38
7	37
8	37
9	37
10	37
11	37
12	37
13	37
14	37
15	37
16	37
17	36
18	36
19	36
20	35
21	34
22	33
23	33
24	32
25	31
26	30
27	29
28	29
29	28
30	28
31	27

	Dry (%)	Comfortable (%)
1	88	12
2	88	12
3	89	11
4	89	11
5	90	10
6	90	10
7	91	9
8	91	9
9	92	8
10	92	8
11	93	7
12	93	7
13	94	6
14	95	5
15	95	5
16	96	4
17	96	4
18	97	3
19	97	3
20	98	2
21	98	2
22	98	2
23	99	1
24	99	1
25	99	1
26	99	1
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0