Sayansk weather in September

In September, Sayansk sees average daytime highs of 14°C and overnight lows near 4°C, with 55 mm of precipitation across 10.2 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 11°C by the end. The sky is clear or mostly clear about 23% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Sayansk's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Sayansk's year-round climate.

Daytime high: 14°; 5th warmest
Overnight low: 4°; 9th coldest
Precipitation: 55 mm; 10.2 wet days
Daylight: 12 h 24 min; 6:53 AM – 7:18 PM
Cloud cover: 65%; 3rd clearest
Wind: 10 km/h; 3rd windiest
Solar energy: 3.29 kWh/m²
Travel score: 4.1; out of 10

Sayansk is Hy.

Density: 530/km²; people per km²
Founded: 1970

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

← August Sayansk 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 18°C in the first days to 11°C by the end.

A typical September day in Sayansk reaches about 14°C in the afternoon and slips back to 4°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 21°C. Set against its neighbours, September runs about 7°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	18	18	17	17	17	17	16	16	16	15	15	15	15	14	14	14	14	13	13	13	13	12	12	12	11	11	11	11	10
Avg low (°C)	8	8	7	7	7	6	6	6	5	5	5	5	4	4	4	4	3	3	3	3	2	2	2	2	1	1	1	1	0	0

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

How September really feels in Sayansk

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 11 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.

Sayansk 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° / -25°	6	2	4.2	7.7	0.0
Feb	-11° / -22°	6	2.2	3.9	9.4	0.0
Mar	-1° / -14°	10	3.2	4.4	11.5	0.0
Apr	9° / -3°	22	6	3.3	13.7	1.7
May	17° / 3°	39	9.1	0.9	15.7	5.2
Jun	23° / 10°	66	10.8	0	16.8	6.5
Jul	24° / 13°	80	12.1	0	16.4	6.5
Aug	22° / 11°	75	10.9	0	14.6	6.4
Sep	14° / 4°	55	10.2	0.6	12.5	4.1
Oct	5° / -4°	22	6.5	3.7	10.2	0.6
Nov	-7° / -15°	14	4.9	6.6	8.3	0.0
Dec	-15° / -23°	13	4.2	6.6	7.2	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 62%.

	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 (%)	41	40	40	40	40	38	38	38	38	38	38	37	38	38	38	37	36	37	37	36	36	36	36	36	37	37	36	37	37	36
Cloudier (%)	59	60	60	60	60	62	62	62	62	62	62	63	62	62	62	63	64	63	63	64	64	64	64	64	63	63	64	63	63	64

	Clearer (%)	Cloudier (%)
1	41	59
2	40	60
3	40	60
4	40	60
5	40	60
6	38	62
7	38	62
8	38	62
9	38	62
10	38	62
11	38	62
12	37	63
13	38	62
14	38	62
15	38	62
16	37	63
17	36	64
18	37	63
19	37	63
20	36	64
21	36	64
22	36	64
23	36	64
24	36	64
25	37	63
26	37	63
27	36	64
28	37	63
29	37	63
30	36	64

Chance of precipitation in September

Any precipitationSnow

Sayansk gets around 55 mm of rain and snow over 10.2 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 33% and peaks near 36% 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 (%)	36	36	36	36	36	36	36	36	35	35	35	34	34	34	33	33	33	33	33	32	32	32	31	31	30	30	29	28	28	27
Snow chance (%)	0	0	0	0	0	0	1	1	1	1	1	2	2	2	2	2	2	3	3	3	3	3	3	3	3	3	4	4	4	4

	Rain chance (%)	Snow chance (%)
1	36	0
2	36	0
3	36	0
4	36	0
5	36	0
6	36	0
7	36	1
8	36	1
9	35	1
10	35	1
11	35	1
12	34	2
13	34	2
14	34	2
15	33	2
16	33	2
17	33	2
18	33	3
19	33	3
20	32	3
21	32	3
22	32	3
23	31	3
24	31	3
25	30	3
26	30	3
27	29	4
28	28	4
29	28	4
30	27	4

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 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
Dry (%)	95	96	97	97	98	98	99	99	99	99	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
Comfortable (%)	5	4	3	3	2	2	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

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

Wind in September

Winds average 10 km/h in September.

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 30 min at the start of September to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 126 minutes over September. Sunrise moves from 6:25 AM to 7:19 AM, and sunset from 7:57 PM to 6:42 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)	13.5	13.5	13.4	13.3	13.2	13.2	13.1	13.0	12.9	12.9	12.8	12.7	12.6	12.6	12.5	12.4	12.4	12.3	12.2	12.1	12.1	12.0	11.9	11.8	11.8	11.7	11.6	11.5	11.5	11.4
Sunrise (AM)	6:25	6:27	6:29	6:31	6:32	6:34	6:36	6:38	6:40	6:42	6:44	6:45	6:47	6:49	6:51	6:53	6:55	6:57	6:58	7:00	7:02	7:04	7:06	7:08	7:10	7:11	7:13	7:15	7:17	7:19
Sunset (PM)	7:57	7:54	7:52	7:49	7:47	7:44	7:42	7:39	7:37	7:34	7:31	7:29	7:26	7:24	7:21	7:18	7:16	7:13	7:11	7:08	7:05	7:03	7:00	6:58	6:55	6:52	6:50	6:47	6:45	6:42

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.5	6:25	7:57
2	13.5	6:27	7:54
3	13.4	6:29	7:52
4	13.3	6:31	7:49
5	13.2	6:32	7:47
6	13.2	6:34	7:44
7	13.1	6:36	7:42
8	13.0	6:38	7:39
9	12.9	6:40	7:37
10	12.9	6:42	7:34
11	12.8	6:44	7:31
12	12.7	6:45	7:29
13	12.6	6:47	7:26
14	12.6	6:49	7:24
15	12.5	6:51	7:21
16	12.4	6:53	7:18
17	12.4	6:55	7:16
18	12.3	6:57	7:13
19	12.2	6:58	7:11
20	12.1	7:00	7:08
21	12.1	7:02	7:05
22	12.0	7:04	7:03
23	11.9	7:06	7:00
24	11.8	7:08	6:58
25	11.8	7:10	6:55
26	11.7	7:11	6:52
27	11.6	7:13	6:50
28	11.5	7:15	6:47
29	11.5	7:17	6:45
30	11.4	7:19	6:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.29 kWh/m².

For context, solar energy here swings from a low near 0.69 kWh/m² to a high of 6.1 kWh/m² in June across the year — September's 3.29 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)	4.0	3.9	3.9	3.8	3.8	3.7	3.7	3.6	3.6	3.5	3.5	3.5	3.4	3.4	3.3	3.3	3.2	3.2	3.1	3.1	3.0	3.0	3.0	2.9	2.9	2.9	2.8	2.8	2.7	2.7
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.0	Moderate
2	3.9	Moderate
3	3.9	Moderate
4	3.8	Moderate
5	3.8	Moderate
6	3.7	Moderate
7	3.7	Moderate
8	3.6	Moderate
9	3.6	Moderate
10	3.5	Moderate
11	3.5	Moderate
12	3.5	Moderate
13	3.4	Moderate
14	3.4	Moderate
15	3.3	Moderate
16	3.3	Moderate
17	3.2	Moderate
18	3.2	Moderate
19	3.1	Moderate
20	3.1	Moderate
21	3.0	Moderate
22	3.0	Moderate
23	3.0	Moderate
24	2.9	Moderate
25	2.9	Moderate
26	2.9	Moderate
27	2.8	Moderate
28	2.8	Moderate
29	2.7	Moderate
30	2.7	Moderate

Planning a trip in September

Is September a good time to visit Sayansk?

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

4.1

Sightseeing

5th-best month of the year

0.5

Beach & pool

5th-best month of the year

September is a reasonable time to visit Sayansk for sightseeing.

What to pack for Sayansk in September

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

In September, Sayansk sees daytime highs around 14°C and nights near 4°C. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

UV index in Sayansk in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sayansk peaks around July 11 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 0 (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	1	2	4	5	6	6	5	4	2	1	0
Level	Low	Low	Low	Moderate	High	High	High	Moderate	Moderate	Low	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	1	Low
Mar	2	Low
Apr	4	Moderate
May	5	High
Jun	6	High
Jul	6	High
Aug	5	Moderate
Sep	4	Moderate
Oct	2	Low
Nov	1	Low
Dec	0	Low

Air quality in Sayansk 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 Sayansk is worst in May — around 24 µg/m³ PM2.5 (moderate), about 8.2× 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)	5	6	7	21	24	12	15	13	7	7	4	3
Level	Good	Good	Good	Moderate	Moderate	Good	Moderate	Moderate	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	5	Good
Feb	6	Good
Mar	7	Good
Apr	21	Moderate
May	24	Moderate
Jun	12	Good
Jul	15	Moderate
Aug	13	Moderate
Sep	7	Good
Oct	7	Good
Nov	4	Good
Dec	3	Good

Location & terrain

Where is Sayansk?

Sayansk sits at 54.1°N, 102.2°E, 553 m above sea level, in Russia. The nearest listed city is Zima, 23 km away.

Topography around Sayansk

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

Within 3 km, the terrain around Sayansk has only modest variations in elevation — a maximum elevation change of 133 m around an average of 543 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 215 m; within 80 km, significant variations in elevation — a maximum elevation change of 464 m.

The land around Sayansk is covered by trees (88%) within 3 km, trees (67%) and grassland (24%) within 16 km, and trees (63%) and grassland (22%) within 80 km.

3 km

133 m

trees 88%

16 km

215 m

trees 67%

80 km

464 m

trees 63%

treesgrasslandcroplandartificial surfaceswater

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

September weather nearby: Zima 23 km · Tulun 115 km · Cheremkhovo 123 km · Usol’ye-Sibirskoye 180 km · Angarsk 208 km · Nizhneudinsk 221 km · Bratsk 227 km · Vikhorevka 232 km

Russia travel facts

Travel advisory: Level 4; Do Not Travel
Power plugs: Type C / F; 230 V · 50 Hz
Prices: ≈ 32% of US; price level, 2025
GDP per capita: $17,547; 2025
Happiness: 5.8 / 10; World Happiness, 2025
Safe drinking water: 76%; of population, 2024
Homicide rate: 6.8; per 100k, 2021
Road deaths: 12; per 100k/yr, 2019
Income group: High; World Bank
English: Moderate; EF EPI 521
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 Sayansk (54.1129°, 102.1777°, elevation 553 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	8
2	18	8
3	18	7
4	17	7
5	17	7
6	17	6
7	17	6
8	16	6
9	16	5
10	16	5
11	15	5
12	15	5
13	15	4
14	15	4
15	14	4
16	14	4
17	14	3
18	14	3
19	13	3
20	13	3
21	13	2
22	13	2
23	12	2
24	12	2
25	12	1
26	11	1
27	11	1
28	11	1
29	11	0
30	10	0

	Clearer (%)	Cloudier (%)
1	41	59
2	40	60
3	40	60
4	40	60
5	40	60
6	38	62
7	38	62
8	38	62
9	38	62
10	38	62
11	38	62
12	37	63
13	38	62
14	38	62
15	38	62
16	37	63
17	36	64
18	37	63
19	37	63
20	36	64
21	36	64
22	36	64
23	36	64
24	36	64
25	37	63
26	37	63
27	36	64
28	37	63
29	37	63
30	36	64

	Rain chance (%)	Snow chance (%)
1	36	0
2	36	0
3	36	0
4	36	0
5	36	0
6	36	0
7	36	1
8	36	1
9	35	1
10	35	1
11	35	1
12	34	2
13	34	2
14	34	2
15	33	2
16	33	2
17	33	2
18	33	3
19	33	3
20	32	3
21	32	3
22	32	3
23	31	3
24	31	3
25	30	3
26	30	3
27	29	4
28	28	4
29	28	4
30	27	4

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

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

	Clearer (%)	Cloudier (%)
1	41	59
2	40	60
3	40	60
4	40	60
5	40	60
6	38	62
7	38	62
8	38	62
9	38	62
10	38	62
11	38	62
12	37	63
13	38	62
14	38	62
15	38	62
16	37	63
17	36	64
18	37	63
19	37	63
20	36	64
21	36	64
22	36	64
23	36	64
24	36	64
25	37	63
26	37	63
27	36	64
28	37	63
29	37	63
30	36	64

	Rain chance (%)	Snow chance (%)
1	36	0
2	36	0
3	36	0
4	36	0
5	36	0
6	36	0
7	36	1
8	36	1
9	35	1
10	35	1
11	35	1
12	34	2
13	34	2
14	34	2
15	33	2
16	33	2
17	33	2
18	33	3
19	33	3
20	32	3
21	32	3
22	32	3
23	31	3
24	31	3
25	30	3
26	30	3
27	29	4
28	28	4
29	28	4
30	27	4

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

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

	Clearer (%)	Cloudier (%)
1	41	59
2	40	60
3	40	60
4	40	60
5	40	60
6	38	62
7	38	62
8	38	62
9	38	62
10	38	62
11	38	62
12	37	63
13	38	62
14	38	62
15	38	62
16	37	63
17	36	64
18	37	63
19	37	63
20	36	64
21	36	64
22	36	64
23	36	64
24	36	64
25	37	63
26	37	63
27	36	64
28	37	63
29	37	63
30	36	64

	Rain chance (%)	Snow chance (%)
1	36	0
2	36	0
3	36	0
4	36	0
5	36	0
6	36	0
7	36	1
8	36	1
9	35	1
10	35	1
11	35	1
12	34	2
13	34	2
14	34	2
15	33	2
16	33	2
17	33	2
18	33	3
19	33	3
20	32	3
21	32	3
22	32	3
23	31	3
24	31	3
25	30	3
26	30	3
27	29	4
28	28	4
29	28	4
30	27	4

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