Lyman weather in September

In September, Lyman sees average daytime highs of 21°C and overnight lows near 10°C, with 42 mm of rain across 7.1 wet days and about 12.4 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 18°C by the end. The sky is clear or mostly clear about 40% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Lyman's 3rd-clearest and 8th-windiest month. For the whole year in context, see Lyman's year-round climate.

Daytime high: 21°; 5th warmest
Overnight low: 10°; 8th coldest
Rainfall: 42 mm; 7.1 wet days
Daylight: 12 h 24 min; 5:12 AM – 5:34 PM
Cloud cover: 52%; 3rd clearest
Wind: 12 km/h; 8th windiest
Solar energy: 3.65 kWh/m²
Travel score: 7.0; out of 10

Lyman is city in Donetsk Oblast, Ukraine.

Density: 1,103/km²; people per km²
Founded: 1667

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

← August Lyman 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 24°C in the first days to 18°C by the end.

A typical September day in Lyman 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 14°C and 27°C. Set against its neighbours, September runs about 6°C cooler than August and about 8°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)	24	24	24	24	23	23	23	23	22	22	22	22	21	21	21	21	21	20	20	20	20	19	19	19	19	18	18	18	18	18
Avg low (°C)	13	13	13	12	12	12	12	12	11	11	11	11	11	10	10	10	10	10	9	9	9	9	9	9	8	8	8	8	8	8

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

How September really feels in Lyman

Once humidity and wind are folded in, September 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

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

Lyman weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-2° / -7°	41	9.2	7.6	8.5	0.0
Feb	-0° / -6°	35	7.8	6.1	9.8	0.0
Mar	6° / -2°	41	9.7	4.3	11.6	0.6
Apr	15° / 5°	43	9.4	0.5	13.4	4.4
May	21° / 11°	51	9.5	0	15	6.7
Jun	26° / 15°	56	10.4	0	15.9	6.7
Jul	28° / 17°	49	8.7	0	15.6	6.5
Aug	27° / 15°	36	5.9	0	14.2	7.1
Sep	21° / 10°	42	7.1	0	12.4	7.0
Oct	13° / 5°	40	7.4	0.5	10.5	3.9
Nov	5° / -1°	37	7.2	2.5	8.9	0.4
Dec	-0° / -5°	43	8.7	5.7	8.1	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 46%.

	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 (%)	59	59	59	59	58	58	58	58	57	57	57	57	57	57	56	56	55	54	54	53	52	51	50	49	49	48	48	47	47	46
Cloudier (%)	41	41	41	41	42	42	42	42	43	43	43	43	43	43	44	44	45	46	46	47	48	49	50	51	51	52	52	53	53	54

	Clearer (%)	Cloudier (%)
1	59	41
2	59	41
3	59	41
4	59	41
5	58	42
6	58	42
7	58	42
8	58	42
9	57	43
10	57	43
11	57	43
12	57	43
13	57	43
14	57	43
15	56	44
16	56	44
17	55	45
18	54	46
19	54	46
20	53	47
21	52	48
22	51	49
23	50	50
24	49	51
25	49	51
26	48	52
27	48	52
28	47	53
29	47	53
30	46	54

Chance of precipitation in September

Any precipitation

Lyman gets around 42 mm of rain over 7.1 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 24% and peaks near 25% on the wettest days.

	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 (%)	25	25	25	25	25	25	24	24	24	24	24	24	23	23	23	23	23	23	23	23	24	24	24	24	25	25	25	25	25	24

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

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 87% 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 (%)	76	77	78	79	81	82	82	84	85	86	86	88	89	89	89	90	90	90	91	91	91	92	92	92	92	93	93	93	93	93
Comfortable (%)	19	18	18	17	16	15	15	14	13	12	12	11	10	10	10	9	9	9	8	8	8	7	7	7	7	6	6	6	6	6
Humid (%)	5	5	4	4	3	3	3	2	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)	Humid (%)
1	76	19	5
2	77	18	5
3	78	18	4
4	79	17	4
5	81	16	3
6	82	15	3
7	82	15	3
8	84	14	2
9	85	13	2
10	86	12	2
11	86	12	2
12	88	11	1
13	89	10	1
14	89	10	1
15	89	10	1
16	90	9	1
17	90	9	1
18	90	9	1
19	91	8	1
20	91	8	1
21	91	8	1
22	92	7	1
23	92	7	1
24	92	7	1
25	92	7	1
26	93	6	1
27	93	6	1
28	93	6	1
29	93	6	1
30	93	6	1

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 12 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)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 18 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 108 minutes over September. Sunrise moves from 4:50 AM to 5:33 AM, and sunset from 6:07 PM to 5:03 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)	13.3	13.2	13.2	13.1	13.0	13.0	12.9	12.8	12.8	12.7	12.7	12.6	12.5	12.5	12.4	12.4	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)	4:50	4:52	4:53	4:55	4:56	4:58	4:59	5:01	5:02	5:04	5:05	5:07	5:08	5:09	5:11	5:12	5:14	5:15	5:17	5:18	5:20	5:21	5:23	5:24	5:26	5:27	5:29	5:30	5:32	5:33
Sunset (PM)	6:07	6:04	6:02	6:00	5:58	5:56	5:54	5:51	5:49	5:47	5:45	5:43	5:40	5:38	5:36	5:34	5:32	5:29	5:27	5:25	5:23	5:20	5:18	5:16	5:14	5:12	5:09	5:07	5:05	5:03

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.3	4:50	6:07
2	13.2	4:52	6:04
3	13.2	4:53	6:02
4	13.1	4:55	6:00
5	13.0	4:56	5:58
6	13.0	4:58	5:56
7	12.9	4:59	5:54
8	12.8	5:01	5:51
9	12.8	5:02	5:49
10	12.7	5:04	5:47
11	12.7	5:05	5:45
12	12.6	5:07	5:43
13	12.5	5:08	5:40
14	12.5	5:09	5:38
15	12.4	5:11	5:36
16	12.4	5:12	5:34
17	12.3	5:14	5:32
18	12.2	5:15	5:29
19	12.2	5:17	5:27
20	12.1	5:18	5:25
21	12.0	5:20	5:23
22	12.0	5:21	5:20
23	11.9	5:23	5:18
24	11.9	5:24	5:16
25	11.8	5:26	5:14
26	11.7	5:27	5:12
27	11.7	5:29	5:09
28	11.6	5:30	5:07
29	11.6	5:32	5:05
30	11.5	5:33	5:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.65 kWh/m².

For context, solar energy here swings from a low near 0.7 kWh/m² to a high of 6.04 kWh/m² in June across the year — September's 3.65 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)	4.4	4.3	4.3	4.3	4.2	4.1	4.1	4.0	4.0	4.0	3.9	3.9	3.8	3.8	3.7	3.6	3.6	3.5	3.5	3.4	3.4	3.3	3.3	3.2	3.1	3.1	3.0	3.0	2.9	2.9
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	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	4.4	Bright
2	4.3	Bright
3	4.3	Bright
4	4.3	Bright
5	4.2	Bright
6	4.1	Bright
7	4.1	Bright
8	4.0	Bright
9	4.0	Moderate
10	4.0	Moderate
11	3.9	Moderate
12	3.9	Moderate
13	3.8	Moderate
14	3.8	Moderate
15	3.7	Moderate
16	3.6	Moderate
17	3.6	Moderate
18	3.5	Moderate
19	3.5	Moderate
20	3.4	Moderate
21	3.4	Moderate
22	3.3	Moderate
23	3.3	Moderate
24	3.2	Moderate
25	3.1	Moderate
26	3.1	Moderate
27	3.0	Moderate
28	3.0	Moderate
29	2.9	Moderate
30	2.9	Moderate

Planning a trip in September

Is September a good time to visit Lyman?

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

7.0

Sightseeing

2nd-best month of the year

4.2

Beach & pool

5th-best month of the year

September is one of the better times to visit Lyman for general sightseeing.

What to pack for Lyman in September

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

In September, Lyman sees daytime highs around 21°C and nights near 10°C. Little to plan around — just the basics. About 7 days see rain.

UV index in Lyman 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 Lyman peaks around June 20 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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	1	3	5	5	8	7	5	5	3	1	1
Level	Low	Low	Moderate	Moderate	Moderate	Very high	Very high	High	High	Moderate	Low	Low

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

Air quality in Lyman 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 Lyman is worst in March — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 8 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)	9	11	17	11	10	11	16	14	10	9	9	8
Level	Good	Good	Moderate	Good	Good	Good	Moderate	Moderate	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	9	Good
Feb	11	Good
Mar	17	Moderate
Apr	11	Good
May	10	Good
Jun	11	Good
Jul	16	Moderate
Aug	14	Moderate
Sep	10	Good
Oct	9	Good
Nov	9	Good
Dec	8	Good

Location & terrain

Where is Lyman?

Lyman sits at 49.0°N, 37.8°E, 110 m above sea level, in Ukraine. The nearest listed city is Slovyansk, 22 km away.

Topography around Lyman

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

Within 3 km, the terrain around Lyman has only modest variations in elevation — a maximum elevation change of 41 m around an average of 107 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 168 m; within 80 km, significant variations in elevation — a maximum elevation change of 327 m.

The land around Lyman is covered by cropland (39%), trees (30%) and artificial surfaces (20%) within 3 km, trees (44%) and cropland (32%) within 16 km, and cropland (58%) and trees (22%) within 80 km.

3 km

41 m

cropland 39%

16 km

168 m

trees 44%

80 km

327 m

cropland 58%

treesgrasslandcroplandartificial surfaceswaterwetland

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

September weather nearby: Slovyansk 22 km · Kreminna 30 km · Sotsmisto 32 km · Sonyachnyi 33 km · Kramatorsk 34 km · Rubizhne 42 km · Lysychansk 46 km · Izyum 46 km

Ukraine travel facts

Travel advisory: Level 4; Do Not Travel
Power plugs: Type C / F; 230 V · 50 Hz
Prices: ≈ 31% of US; price level, 2025
GDP per capita: $5,866; 2025
Happiness: 4.7 / 10; World Happiness, 2025
Safe drinking water: 88%; of population, 2024
Homicide rate: 3.8; per 100k, 2021
Road deaths: 10.2; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Moderate; EF EPI 526

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 Lyman (48.9901°, 37.8084°, elevation 110 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	24	13
2	24	13
3	24	13
4	24	12
5	23	12
6	23	12
7	23	12
8	23	12
9	22	11
10	22	11
11	22	11
12	22	11
13	21	11
14	21	10
15	21	10
16	21	10
17	21	10
18	20	10
19	20	9
20	20	9
21	20	9
22	19	9
23	19	9
24	19	9
25	19	8
26	18	8
27	18	8
28	18	8
29	18	8
30	18	8

	Clearer (%)	Cloudier (%)
1	59	41
2	59	41
3	59	41
4	59	41
5	58	42
6	58	42
7	58	42
8	58	42
9	57	43
10	57	43
11	57	43
12	57	43
13	57	43
14	57	43
15	56	44
16	56	44
17	55	45
18	54	46
19	54	46
20	53	47
21	52	48
22	51	49
23	50	50
24	49	51
25	49	51
26	48	52
27	48	52
28	47	53
29	47	53
30	46	54

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

	Dry (%)	Comfortable (%)	Humid (%)
1	76	19	5
2	77	18	5
3	78	18	4
4	79	17	4
5	81	16	3
6	82	15	3
7	82	15	3
8	84	14	2
9	85	13	2
10	86	12	2
11	86	12	2
12	88	11	1
13	89	10	1
14	89	10	1
15	89	10	1
16	90	9	1
17	90	9	1
18	90	9	1
19	91	8	1
20	91	8	1
21	91	8	1
22	92	7	1
23	92	7	1
24	92	7	1
25	92	7	1
26	93	6	1
27	93	6	1
28	93	6	1
29	93	6	1
30	93	6	1

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

	Clearer (%)	Cloudier (%)
1	59	41
2	59	41
3	59	41
4	59	41
5	58	42
6	58	42
7	58	42
8	58	42
9	57	43
10	57	43
11	57	43
12	57	43
13	57	43
14	57	43
15	56	44
16	56	44
17	55	45
18	54	46
19	54	46
20	53	47
21	52	48
22	51	49
23	50	50
24	49	51
25	49	51
26	48	52
27	48	52
28	47	53
29	47	53
30	46	54

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

	Dry (%)	Comfortable (%)	Humid (%)
1	76	19	5
2	77	18	5
3	78	18	4
4	79	17	4
5	81	16	3
6	82	15	3
7	82	15	3
8	84	14	2
9	85	13	2
10	86	12	2
11	86	12	2
12	88	11	1
13	89	10	1
14	89	10	1
15	89	10	1
16	90	9	1
17	90	9	1
18	90	9	1
19	91	8	1
20	91	8	1
21	91	8	1
22	92	7	1
23	92	7	1
24	92	7	1
25	92	7	1
26	93	6	1
27	93	6	1
28	93	6	1
29	93	6	1
30	93	6	1

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

	Clearer (%)	Cloudier (%)
1	59	41
2	59	41
3	59	41
4	59	41
5	58	42
6	58	42
7	58	42
8	58	42
9	57	43
10	57	43
11	57	43
12	57	43
13	57	43
14	57	43
15	56	44
16	56	44
17	55	45
18	54	46
19	54	46
20	53	47
21	52	48
22	51	49
23	50	50
24	49	51
25	49	51
26	48	52
27	48	52
28	47	53
29	47	53
30	46	54

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

	Dry (%)	Comfortable (%)	Humid (%)
1	76	19	5
2	77	18	5
3	78	18	4
4	79	17	4
5	81	16	3
6	82	15	3
7	82	15	3
8	84	14	2
9	85	13	2
10	86	12	2
11	86	12	2
12	88	11	1
13	89	10	1
14	89	10	1
15	89	10	1
16	90	9	1
17	90	9	1
18	90	9	1
19	91	8	1
20	91	8	1
21	91	8	1
22	92	7	1
23	92	7	1
24	92	7	1
25	92	7	1
26	93	6	1
27	93	6	1
28	93	6	1
29	93	6	1
30	93	6	1