Arvayheer weather in August

In August, Arvayheer sees average daytime highs of 21°C and overnight lows near 10°C, with 50 mm of precipitation across 9 wet days and about 14 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 20°C by the end. The sky is clear or mostly clear about 35% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 42 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Arvayheer's 9th-clearest and 9th-windiest month. For the whole year in context, see Arvayheer's year-round climate.

Daytime high: 21°; 2nd warmest
Overnight low: 10°; 11th coldest
Precipitation: 50 mm; 9 wet days
Daylight: 14 hours; 6:13 AM – 8:13 PM
Cloud cover: 54%; 9th clearest
Wind: 11 km/h; 9th windiest
Solar energy: 5.66 kWh/m²
Travel score: 6.7; out of 10

Arvayheer is main settlement in the district of the same name.

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

← July Arvayheer 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 22°C in the first days to 20°C by the end.

A typical August day in Arvayheer reaches about 21°C in the afternoon and slips back to 10°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 26°C. Set against its neighbours, August runs about 2°C cooler than July and about 5°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	22	22	22	22	22	22	22	22	22	21	21	21	21	21	21	21	21	21	21	21	21	20	20	20	20	20	20	19	19
Avg low (°C)	11	11	11	11	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	7	7

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

How August really feels in Arvayheer

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.

Arvayheer weather by month

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

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-10° / -22°	1	0.3	0.8	8.8	0.0
Feb	-6° / -19°	3	0.9	1.2	10	0.0
Mar	1° / -12°	7	2.2	2.9	11.6	0.0
Apr	9° / -4°	13	4	3.1	13.3	2.2
May	16° / 2°	27	5.9	2.1	14.7	5.3
Jun	21° / 9°	43	8.4	0.2	15.5	6.6
Jul	23° / 12°	62	11	0	15.2	6.6
Aug	21° / 10°	50	9	0.1	14	6.7
Sep	16° / 3°	23	5.2	1.1	12.3	5.6
Oct	8° / -5°	10	2.7	2.5	10.7	1.7
Nov	-2° / -13°	4	1.2	1.7	9.2	0.0
Dec	-8° / -19°	2	0.4	0.9	8.5	0.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 44%.

	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 (%)	53	53	53	53	54	54	55	55	56	56	56	56	57	57	58	58	58	58	58	58	57	57	57	57	58	57	57	57	58	58	58
Cloudier (%)	47	47	47	47	46	46	45	45	44	44	44	44	43	43	42	42	42	42	42	42	43	43	43	43	42	43	43	43	42	42	42

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	54	46
6	54	46
7	55	45
8	55	45
9	56	44
10	56	44
11	56	44
12	56	44
13	57	43
14	57	43
15	58	42
16	58	42
17	58	42
18	58	42
19	58	42
20	58	42
21	57	43
22	57	43
23	57	43
24	57	43
25	58	42
26	57	43
27	57	43
28	57	43
29	58	42
30	58	42
31	58	42

Chance of precipitation in August

Any precipitation

Arvayheer gets around 50 mm of rain and snow over 9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 29% and peaks near 35% on the wettest days, and about 0 day brings snow. 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 (%)	35	34	34	34	34	33	33	33	32	32	32	32	32	31	31	30	30	29	28	28	27	27	26	25	25	24	23	23	22	22	21

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

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 99% 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 (%)	97	97	97	97	98	98	98	98	98	98	99	99	99	99	99	99	99	99	99	99	99	99	100	100	100	100	100	100	100	100	100
Comfortable (%)	3	3	3	3	2	2	2	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0

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

Wind in August

Winds average 11 km/h in August.

Across August, daily wind ranges from about 10 km/h on the calmest days to 11 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)	10	10	10	10	10	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11
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	10	calm
2	10	calm
3	10	calm
4	10	calm
5	10	calm
6	11	calm
7	11	calm
8	11	calm
9	11	calm
10	11	calm
11	11	calm
12	11	calm
13	11	calm
14	11	calm
15	11	calm
16	11	calm
17	11	calm
18	11	calm
19	11	calm
20	11	calm
21	11	calm
22	11	calm
23	11	calm
24	11	calm
25	11	calm
26	11	calm
27	11	calm
28	11	calm
29	11	calm
30	11	calm
31	11	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 42 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over August. Sunrise moves from 5:54 AM to 6:33 AM, and sunset from 8:35 PM to 7:45 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)	14.7	14.6	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	13.9	13.8	13.8	13.7	13.7	13.6	13.6	13.5	13.5	13.4	13.4	13.3	13.3	13.2
Sunrise (AM)	5:54	5:56	5:57	5:58	5:59	6:01	6:02	6:03	6:04	6:06	6:07	6:08	6:09	6:11	6:12	6:13	6:15	6:16	6:17	6:18	6:20	6:21	6:22	6:24	6:25	6:26	6:27	6:29	6:30	6:31	6:33
Sunset (PM)	8:35	8:34	8:33	8:31	8:30	8:29	8:27	8:26	8:24	8:23	8:21	8:19	8:18	8:16	8:14	8:13	8:11	8:09	8:08	8:06	8:04	8:02	8:00	7:59	7:57	7:55	7:53	7:51	7:49	7:47	7:45

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.7	5:54	8:35
2	14.6	5:56	8:34
3	14.6	5:57	8:33
4	14.6	5:58	8:31
5	14.5	5:59	8:30
6	14.5	6:01	8:29
7	14.4	6:02	8:27
8	14.4	6:03	8:26
9	14.3	6:04	8:24
10	14.3	6:06	8:23
11	14.2	6:07	8:21
12	14.2	6:08	8:19
13	14.1	6:09	8:18
14	14.1	6:11	8:16
15	14.0	6:12	8:14
16	14.0	6:13	8:13
17	13.9	6:15	8:11
18	13.9	6:16	8:09
19	13.8	6:17	8:08
20	13.8	6:18	8:06
21	13.7	6:20	8:04
22	13.7	6:21	8:02
23	13.6	6:22	8:00
24	13.6	6:24	7:59
25	13.5	6:25	7:57
26	13.5	6:26	7:55
27	13.4	6:27	7:53
28	13.4	6:29	7:51
29	13.3	6:30	7:49
30	13.3	6:31	7:47
31	13.2	6:33	7:45

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.66 kWh/m².

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 6.65 kWh/m² in June across the year — August's 5.66 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)	5.9	5.9	5.9	5.9	5.9	5.8	5.8	5.8	5.8	5.8	5.8	5.8	5.7	5.7	5.7	5.7	5.7	5.6	5.6	5.6	5.6	5.5	5.5	5.5	5.5	5.4	5.4	5.3	5.3	5.3	5.3
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	5.9	Bright
2	5.9	Bright
3	5.9	Bright
4	5.9	Bright
5	5.9	Bright
6	5.8	Bright
7	5.8	Bright
8	5.8	Bright
9	5.8	Bright
10	5.8	Bright
11	5.8	Bright
12	5.8	Bright
13	5.7	Bright
14	5.7	Bright
15	5.7	Bright
16	5.7	Bright
17	5.7	Bright
18	5.6	Bright
19	5.6	Bright
20	5.6	Bright
21	5.6	Bright
22	5.5	Bright
23	5.5	Bright
24	5.5	Bright
25	5.5	Bright
26	5.4	Bright
27	5.4	Bright
28	5.3	Bright
29	5.3	Bright
30	5.3	Bright
31	5.3	Bright

Planning a trip in August

Is August a good time to visit Arvayheer?

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

6.7

Sightseeing

1st-best month of the year

4.1

Beach & pool

2nd-best month of the year

August is a reasonable time to visit Arvayheer for sightseeing.

What to pack for Arvayheer in August

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

In August, Arvayheer sees daytime highs around 21°C and nights near 10°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

UV index in Arvayheer in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arvayheer peaks around July 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	3	7	7	8	9	8	6	3	1	1
Level	Low	Moderate	Moderate	High	Very high	Very high	Very high	Very high	High	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Moderate
Mar	3	Moderate
Apr	7	High
May	7	Very high
Jun	8	Very high
Jul	9	Very high
Aug	8	Very high
Sep	6	High
Oct	3	Moderate
Nov	1	Low
Dec	1	Low

Air quality in Arvayheer 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 Arvayheer is worst in June — around 16 µg/m³ PM2.5 (moderate), about 6.2× the cleanest month (December, 3 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	6	7	11	11	13	16	16	16	9	7	6	3
Level	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	6	Good
Feb	7	Good
Mar	11	Good
Apr	11	Good
May	13	Moderate
Jun	16	Moderate
Jul	16	Moderate
Aug	16	Moderate
Sep	9	Good
Oct	7	Good
Nov	6	Good
Dec	3	Good

Location & terrain

Where is Arvayheer?

Arvayheer sits at 46.3°N, 102.8°E, 1,838 m above sea level, in Mongolia. The nearest listed city is Bayanhongor, 158 km away.

Topography around Arvayheer

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

Within 3 km, the terrain around Arvayheer has only modest variations in elevation — a maximum elevation change of 231 m around an average of 1,849 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 748 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,823 m.

The land around Arvayheer is covered by grassland (77%) within 3 km, grassland (98%) within 16 km, and grassland (89%) within 80 km.

3 km

231 m

grassland 77%

16 km

748 m

grassland 98%

80 km

1,823 m

grassland 89%

treesgrasslandartificial surfacesbare terrainmoss and lichen

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

August weather nearby: Bayanhongor 158 km · Tsetserleg 168 km · Hovd 180 km · Bogd 183 km · Bulgan 289 km · Erdenet 323 km · Dalandzadgad 326 km · Dzuunmod 355 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 Arvayheer (46.2639°, 102.775°, elevation 1,838 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	22	11
4	22	11
5	22	11
6	22	11
7	22	11
8	22	11
9	22	11
10	22	11
11	22	10
12	21	10
13	21	10
14	21	10
15	21	10
16	21	10
17	21	10
18	21	10
19	21	9
20	21	9
21	21	9
22	21	9
23	21	9
24	20	9
25	20	8
26	20	8
27	20	8
28	20	8
29	20	8
30	19	7
31	19	7

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	54	46
6	54	46
7	55	45
8	55	45
9	56	44
10	56	44
11	56	44
12	56	44
13	57	43
14	57	43
15	58	42
16	58	42
17	58	42
18	58	42
19	58	42
20	58	42
21	57	43
22	57	43
23	57	43
24	57	43
25	58	42
26	57	43
27	57	43
28	57	43
29	58	42
30	58	42
31	58	42

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

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

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	54	46
6	54	46
7	55	45
8	55	45
9	56	44
10	56	44
11	56	44
12	56	44
13	57	43
14	57	43
15	58	42
16	58	42
17	58	42
18	58	42
19	58	42
20	58	42
21	57	43
22	57	43
23	57	43
24	57	43
25	58	42
26	57	43
27	57	43
28	57	43
29	58	42
30	58	42
31	58	42

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

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

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	54	46
6	54	46
7	55	45
8	55	45
9	56	44
10	56	44
11	56	44
12	56	44
13	57	43
14	57	43
15	58	42
16	58	42
17	58	42
18	58	42
19	58	42
20	58	42
21	57	43
22	57	43
23	57	43
24	57	43
25	58	42
26	57	43
27	57	43
28	57	43
29	58	42
30	58	42
31	58	42

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

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