Nalayh weather in September

In September, Nalayh sees average daytime highs of 14°C and overnight lows near 2°C, with 37 mm of precipitation across 6.6 wet days and about 12.4 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 17°C in the first days to 11°C by the end. The sky is clear or mostly clear about 44% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 12 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Nalayh's 7th-clearest and 5th-windiest month. For the whole year in context, see Nalayh's year-round climate.

Daytime high: 14°; 5th warmest
Overnight low: 2°; 9th coldest
Precipitation: 37 mm; 6.6 wet days
Daylight: 12 h 18 min; 6:35 AM – 6:55 PM
Cloud cover: 48%; 7th clearest
Wind: 11 km/h; 5th windiest
Solar energy: 4.46 kWh/m²
Travel score: 4.6; out of 10

← August Nalayh year-round climate October →Best places to visit in September

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 17°C in the first days to 11°C by the end.

A typical September day in Nalayh reaches about 14°C in the afternoon and slips back to 2°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 21°C. Set against its neighbours, September runs about 6°C cooler than August and about 9°C warmer than October.

	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
Avg high (°C)	18	17	17	17	17	17	16	16	16	16	15	15	15	15	15	14	14	14	14	13	13	13	12	12	12	12	11	11	11	10
Avg low (°C)	6	6	5	5	5	5	4	4	4	4	3	3	3	2	2	2	2	1	1	1	0	0	0	0	-1	-1	-1	-1	-2	-2

	Avg high (°C)	Avg low (°C)
1	18	6
2	17	6
3	17	5
4	17	5
5	17	5
6	17	5
7	16	4
8	16	4
9	16	4
10	16	4
11	15	3
12	15	3
13	15	3
14	15	2
15	15	2
16	14	2
17	14	2
18	14	1
19	14	1
20	13	1
21	13	0
22	13	0
23	12	0
24	12	0
25	12	-1
26	12	-1
27	11	-1
28	11	-1
29	11	-2
30	10	-2

How September really feels in Nalayh

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 19 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

The story in September is cold — wind chill drags the overnight "feels like" below the raw low.

Nalayh weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 4th-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° / -27°	1	0.5	0.8	8.7	0.0
Feb	-11° / -24°	3	1	1.3	9.9	0.0
Mar	-2° / -15°	6	1.9	2.4	11.6	0.0
Apr	7° / -5°	14	3.6	2.8	13.4	1.3
May	15° / 1°	31	6	2.6	14.9	4.8
Jun	20° / 8°	54	9.8	0.1	15.7	6.3
Jul	22° / 11°	71	11.8	0	15.4	6.3
Aug	20° / 9°	69	10.8	0	14.1	6.2
Sep	14° / 2°	37	6.6	1.3	12.4	4.6
Oct	5° / -7°	13	3.3	2.6	10.6	0.7
Nov	-7° / -17°	5	1.8	2.1	9.1	0.0
Dec	-15° / -25°	2	0.7	1.2	8.3	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.

	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
Clearer (%)	58	59	59	59	61	61	61	62	62	63	63	64	65	65	66	65	65	66	65	65	64	64	64	64	64	64	65	65	66	66
Cloudier (%)	42	41	41	41	39	39	39	38	38	37	37	36	35	35	34	35	35	34	35	35	36	36	36	36	36	36	35	35	34	34

	Clearer (%)	Cloudier (%)
1	58	42
2	59	41
3	59	41
4	59	41
5	61	39
6	61	39
7	61	39
8	62	38
9	62	38
10	63	37
11	63	37
12	64	36
13	65	35
14	65	35
15	66	34
16	65	35
17	65	35
18	66	34
19	65	35
20	65	35
21	64	36
22	64	36
23	64	36
24	64	36
25	64	36
26	64	36
27	65	35
28	65	35
29	66	34
30	66	34

Chance of precipitation in September

Any precipitationSnow

Nalayh gets around 37 mm of rain and snow over 6.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 21% and peaks near 26% on the wettest days, and about 1 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
Rain chance (%)	26	26	26	25	25	25	24	24	23	23	23	22	22	21	21	21	21	20	20	20	20	20	20	19	19	18	18	18	17	17
Snow chance (%)	0	1	1	1	1	1	1	2	2	2	3	3	3	3	4	4	4	5	5	5	6	6	7	7	7	7	8	8	8	8

	Rain chance (%)	Snow chance (%)
1	26	0
2	26	1
3	26	1
4	25	1
5	25	1
6	25	1
7	24	1
8	24	2
9	23	2
10	23	2
11	23	3
12	22	3
13	22	3
14	21	3
15	21	4
16	21	4
17	21	4
18	20	5
19	20	5
20	20	5
21	20	6
22	20	6
23	20	7
24	19	7
25	19	7
26	18	7
27	18	8
28	18	8
29	17	8
30	17	8

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 100% 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
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

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

Wind in September

Winds average 11 km/h in September.

Across September, 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
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
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

	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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 12 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 102 minutes over September. Sunrise moves from 6:14 AM to 6:55 AM, and sunset from 7:27 PM to 6:26 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
Daylight (h)	13.2	13.2	13.1	13.0	13.0	12.9	12.9	12.8	12.8	12.7	12.6	12.6	12.5	12.5	12.4	12.3	12.3	12.2	12.2	12.1	12.0	12.0	11.9	11.9	11.8	11.7	11.7	11.6	11.6	11.5
Sunrise (AM)	6:14	6:15	6:17	6:18	6:20	6:21	6:22	6:24	6:25	6:27	6:28	6:29	6:31	6:32	6:34	6:35	6:36	6:38	6:39	6:41	6:42	6:43	6:45	6:46	6:48	6:49	6:51	6:52	6:53	6:55
Sunset (PM)	7:27	7:25	7:23	7:21	7:19	7:17	7:15	7:12	7:10	7:08	7:06	7:04	7:02	7:00	6:58	6:55	6:53	6:51	6:49	6:47	6:45	6:43	6:40	6:38	6:36	6:34	6:32	6:30	6:28	6:26

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.2	6:14	7:27
2	13.2	6:15	7:25
3	13.1	6:17	7:23
4	13.0	6:18	7:21
5	13.0	6:20	7:19
6	12.9	6:21	7:17
7	12.9	6:22	7:15
8	12.8	6:24	7:12
9	12.8	6:25	7:10
10	12.7	6:27	7:08
11	12.6	6:28	7:06
12	12.6	6:29	7:04
13	12.5	6:31	7:02
14	12.5	6:32	7:00
15	12.4	6:34	6:58
16	12.3	6:35	6:55
17	12.3	6:36	6:53
18	12.2	6:38	6:51
19	12.2	6:39	6:49
20	12.1	6:41	6:47
21	12.0	6:42	6:45
22	12.0	6:43	6:43
23	11.9	6:45	6:40
24	11.9	6:46	6:38
25	11.8	6:48	6:36
26	11.7	6:49	6:34
27	11.7	6:51	6:32
28	11.6	6:52	6:30
29	11.6	6:53	6:28
30	11.5	6:55	6:26

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.46 kWh/m².

For context, solar energy here swings from a low near 1.54 kWh/m² to a high of 6.62 kWh/m² in May across the year — September's 4.46 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
Solar energy (kWh/m²)	4.9	4.9	4.9	4.8	4.8	4.8	4.8	4.7	4.7	4.7	4.6	4.6	4.6	4.5	4.5	4.5	4.4	4.4	4.4	4.3	4.3	4.2	4.2	4.2	4.1	4.1	4.0	4.0	4.0	3.9
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	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.9	Bright
2	4.9	Bright
3	4.9	Bright
4	4.8	Bright
5	4.8	Bright
6	4.8	Bright
7	4.8	Bright
8	4.7	Bright
9	4.7	Bright
10	4.7	Bright
11	4.6	Bright
12	4.6	Bright
13	4.6	Bright
14	4.5	Bright
15	4.5	Bright
16	4.5	Bright
17	4.4	Bright
18	4.4	Bright
19	4.4	Bright
20	4.3	Bright
21	4.3	Bright
22	4.2	Bright
23	4.2	Bright
24	4.2	Bright
25	4.1	Bright
26	4.1	Bright
27	4.0	Bright
28	4.0	Moderate
29	4.0	Moderate
30	3.9	Moderate

Planning a trip in September

Is September a good time to visit Nalayh?

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

4.6

Sightseeing

5th-best month of the year

0.5

Beach & pool

5th-best month of the year

September is a reasonable time to visit Nalayh for sightseeing.

What to pack for Nalayh in September

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

In September, Nalayh sees daytime highs around 14°C and nights near 2°C. Worth packing: a warm layer. About 7 days see rain.

a warm layer

UV index in Nalayh in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nalayh peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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	9	8	5	3	1	1
Level	Low	Low	Moderate	High	High	Very high	Very high	Very high	High	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	9	Very high
Aug	8	Very high
Sep	5	High
Oct	3	Moderate
Nov	1	Low
Dec	1	Low

Air quality in Nalayh in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Nalayh is worst in July — around 24 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (October, 7 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)	10	10	9	9	10	14	24	13	7	7	9	7
Level	Good	Good	Good	Good	Good	Moderate	Moderate	Moderate	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	10	Good
Feb	10	Good
Mar	9	Good
Apr	9	Good
May	10	Good
Jun	14	Moderate
Jul	24	Moderate
Aug	13	Moderate
Sep	7	Good
Oct	7	Good
Nov	9	Good
Dec	7	Good

Location & terrain

Where is Nalayh?

Nalayh sits at 47.8°N, 107.3°E, 1,434 m above sea level, in Mongolia. The nearest listed city is Zuunmod, 26 km away.

Topography around Nalayh

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

Within 3 km, the terrain around Nalayh has only modest variations in elevation — a maximum elevation change of 148 m around an average of 1,450 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 743 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,674 m.

The land around Nalayh is covered by grassland (72%) and artificial surfaces (21%) within 3 km, grassland (89%) within 16 km, and grassland (82%) within 80 km.

3 km

148 m

grassland 72%

16 km

743 m

grassland 89%

80 km

1,674 m

grassland 82%

treesgrasslandcroplandartificial surfacesbare terrainmoss and lichen

← August Nalayh year-round climate October →Best places to visit in September

September weather nearby: Zuunmod 26 km · Dzuunmod 26 km · Ulaanbaatar 34 km · Dzüünharaa 135 km · Darhan 216 km · Öndörkhaan 258 km · Erdenet 275 km · Sühbaatar 285 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 Nalayh (47.7667°, 107.2833°, elevation 1,434 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	18	6
2	17	6
3	17	5
4	17	5
5	17	5
6	17	5
7	16	4
8	16	4
9	16	4
10	16	4
11	15	3
12	15	3
13	15	3
14	15	2
15	15	2
16	14	2
17	14	2
18	14	1
19	14	1
20	13	1
21	13	0
22	13	0
23	12	0
24	12	0
25	12	-1
26	12	-1
27	11	-1
28	11	-1
29	11	-2
30	10	-2

	Clearer (%)	Cloudier (%)
1	58	42
2	59	41
3	59	41
4	59	41
5	61	39
6	61	39
7	61	39
8	62	38
9	62	38
10	63	37
11	63	37
12	64	36
13	65	35
14	65	35
15	66	34
16	65	35
17	65	35
18	66	34
19	65	35
20	65	35
21	64	36
22	64	36
23	64	36
24	64	36
25	64	36
26	64	36
27	65	35
28	65	35
29	66	34
30	66	34

	Rain chance (%)	Snow chance (%)
1	26	0
2	26	1
3	26	1
4	25	1
5	25	1
6	25	1
7	24	1
8	24	2
9	23	2
10	23	2
11	23	3
12	22	3
13	22	3
14	21	3
15	21	4
16	21	4
17	21	4
18	20	5
19	20	5
20	20	5
21	20	6
22	20	6
23	20	7
24	19	7
25	19	7
26	18	7
27	18	8
28	18	8
29	17	8
30	17	8

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

	Avg high (°C)	Avg low (°C)
1	18	6
2	17	6
3	17	5
4	17	5
5	17	5
6	17	5
7	16	4
8	16	4
9	16	4
10	16	4
11	15	3
12	15	3
13	15	3
14	15	2
15	15	2
16	14	2
17	14	2
18	14	1
19	14	1
20	13	1
21	13	0
22	13	0
23	12	0
24	12	0
25	12	-1
26	12	-1
27	11	-1
28	11	-1
29	11	-2
30	10	-2

	Clearer (%)	Cloudier (%)
1	58	42
2	59	41
3	59	41
4	59	41
5	61	39
6	61	39
7	61	39
8	62	38
9	62	38
10	63	37
11	63	37
12	64	36
13	65	35
14	65	35
15	66	34
16	65	35
17	65	35
18	66	34
19	65	35
20	65	35
21	64	36
22	64	36
23	64	36
24	64	36
25	64	36
26	64	36
27	65	35
28	65	35
29	66	34
30	66	34

	Rain chance (%)	Snow chance (%)
1	26	0
2	26	1
3	26	1
4	25	1
5	25	1
6	25	1
7	24	1
8	24	2
9	23	2
10	23	2
11	23	3
12	22	3
13	22	3
14	21	3
15	21	4
16	21	4
17	21	4
18	20	5
19	20	5
20	20	5
21	20	6
22	20	6
23	20	7
24	19	7
25	19	7
26	18	7
27	18	8
28	18	8
29	17	8
30	17	8

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

	Avg high (°C)	Avg low (°C)
1	18	6
2	17	6
3	17	5
4	17	5
5	17	5
6	17	5
7	16	4
8	16	4
9	16	4
10	16	4
11	15	3
12	15	3
13	15	3
14	15	2
15	15	2
16	14	2
17	14	2
18	14	1
19	14	1
20	13	1
21	13	0
22	13	0
23	12	0
24	12	0
25	12	-1
26	12	-1
27	11	-1
28	11	-1
29	11	-2
30	10	-2

	Clearer (%)	Cloudier (%)
1	58	42
2	59	41
3	59	41
4	59	41
5	61	39
6	61	39
7	61	39
8	62	38
9	62	38
10	63	37
11	63	37
12	64	36
13	65	35
14	65	35
15	66	34
16	65	35
17	65	35
18	66	34
19	65	35
20	65	35
21	64	36
22	64	36
23	64	36
24	64	36
25	64	36
26	64	36
27	65	35
28	65	35
29	66	34
30	66	34

	Rain chance (%)	Snow chance (%)
1	26	0
2	26	1
3	26	1
4	25	1
5	25	1
6	25	1
7	24	1
8	24	2
9	23	2
10	23	2
11	23	3
12	22	3
13	22	3
14	21	3
15	21	4
16	21	4
17	21	4
18	20	5
19	20	5
20	20	5
21	20	6
22	20	6
23	20	7
24	19	7
25	19	7
26	18	7
27	18	8
28	18	8
29	17	8
30	17	8

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