Ayr weather in September

In September, Ayr sees average daytime highs of 14°C and overnight lows near 12°C, with 127 mm of rain across 16.6 wet days and about 12.5 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 15°C in the first days to 13°C by the end. The sky is clear or mostly clear about 13% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Ayr's 6th-clearest and 7th-windiest month. For the whole year in context, see Ayr's year-round climate.

Daytime high: 14°; 3rd warmest
Overnight low: 12°; 10th coldest
Rainfall: 127 mm; 16.6 wet days
Daylight: 12 h 24 min; 5:59 AM – 6:26 PM
Cloud cover: 72%; 6th clearest
Wind: 21 km/h; 7th windiest
Solar energy: 2.51 kWh/m²
Travel score: 3.4; out of 10

Ayr is town and former Royal Burgh situated on the west coast of Ayrshire in Scotland.

Density: 2,584/km²; people per km²
Founded: 1205

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

← August Ayr 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 15°C in the first days to 13°C by the end.

A typical September day in Ayr reaches about 14°C in the afternoon and slips back to 12°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 16°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°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)	15	15	15	15	15	15	15	15	15	15	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	13	13	13	13
Avg low (°C)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	11	11	11	11	11	11

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

How September really feels in Ayr

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.

Ayr weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	7° / 4°	179	20.1	1.7	7.5	0.6
Feb	7° / 4°	138	16.7	1.8	9.2	0.6
Mar	7° / 5°	121	16.1	1.2	11.4	0.9
Apr	9° / 6°	86	14	0.3	13.8	1.7
May	12° / 8°	83	13.8	0.1	15.9	2.7
Jun	14° / 11°	92	14.2	0	17.1	3.4
Jul	15° / 13°	110	17.2	0	16.6	3.9
Aug	16° / 13°	129	17.7	0	14.8	3.9
Sep	14° / 12°	127	16.6	0	12.5	3.4
Oct	12° / 9°	176	19.1	0	10.1	2.4
Nov	9° / 7°	184	19.9	0.3	8	1.5
Dec	8° / 5°	196	19.5	1.2	6.9	0.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 70%.

	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 (%)	32	32	31	31	31	29	29	29	29	29	29	29	30	31	32	32	32	32	32	31	30	30	30	30	30	29	28	28	28	28
Cloudier (%)	68	68	69	69	69	71	71	71	71	71	71	71	70	69	68	68	68	68	68	69	70	70	70	70	70	71	72	72	72	72

	Clearer (%)	Cloudier (%)
1	32	68
2	32	68
3	31	69
4	31	69
5	31	69
6	29	71
7	29	71
8	29	71
9	29	71
10	29	71
11	29	71
12	29	71
13	30	70
14	31	69
15	32	68
16	32	68
17	32	68
18	32	68
19	32	68
20	31	69
21	30	70
22	30	70
23	30	70
24	30	70
25	30	70
26	29	71
27	28	72
28	28	72
29	28	72
30	28	72

Chance of precipitation in September

Any precipitation

Ayr gets around 127 mm of rain over 16.6 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 56% and peaks near 62% 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 (%)	55	56	56	56	56	56	56	56	56	56	55	55	54	54	53	52	52	52	52	52	53	53	55	56	57	58	60	61	62	62

	Rain chance (%)
1	55
2	56
3	56
4	56
5	56
6	56
7	56
8	56
9	56
10	56
11	55
12	55
13	54
14	54
15	53
16	52
17	52
18	52
19	52
20	52
21	53
22	53
23	55
24	56
25	57
26	58
27	60
28	61
29	62
30	62

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 91% 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 (%)	84	84	85	85	86	86	86	87	87	88	89	89	90	91	91	92	92	93	93	93	94	94	95	95	95	95	96	96	96	97
Comfortable (%)	16	16	15	15	14	14	14	13	13	12	11	11	10	9	9	8	8	7	7	7	6	6	5	5	5	5	4	4	4	3

	Dry (%)	Comfortable (%)
1	84	16
2	84	16
3	85	15
4	85	15
5	86	14
6	86	14
7	86	14
8	87	13
9	87	13
10	88	12
11	89	11
12	89	11
13	90	10
14	91	9
15	91	9
16	92	8
17	92	8
18	93	7
19	93	7
20	93	7
21	94	6
22	94	6
23	95	5
24	95	5
25	95	5
26	95	5
27	96	4
28	96	4
29	96	4
30	97	3

Wind in September

Winds average 21 km/h in September.

Across September, daily wind ranges from about 20 km/h on the calmest days to 22 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)	20	20	20	20	20	20	20	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	21	22	22
Feels	light breeze	light breeze	light breeze	light breeze	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 36 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 132 minutes over September. Sunrise moves from 5:30 AM to 6:27 AM, and sunset from 7:07 PM to 5:49 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)	13.6	13.5	13.5	13.4	13.3	13.2	13.1	13.1	13.0	12.9	12.8	12.8	12.7	12.6	12.5	12.4	12.4	12.3	12.2	12.1	12.1	12.0	11.9	11.8	11.7	11.7	11.6	11.5	11.4	11.4
Sunrise (AM)	5:30	5:32	5:34	5:36	5:38	5:40	5:42	5:44	5:46	5:48	5:50	5:52	5:53	5:55	5:57	5:59	6:01	6:03	6:05	6:07	6:09	6:11	6:13	6:15	6:17	6:19	6:21	6:23	6:25	6:27
Sunset (PM)	7:07	7:04	7:01	6:59	6:56	6:53	6:51	6:48	6:45	6:43	6:40	6:37	6:34	6:32	6:29	6:26	6:24	6:21	6:18	6:15	6:13	6:10	6:07	6:05	6:02	5:59	5:57	5:54	5:51	5:49

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.6	5:30	7:07
2	13.5	5:32	7:04
3	13.5	5:34	7:01
4	13.4	5:36	6:59
5	13.3	5:38	6:56
6	13.2	5:40	6:53
7	13.1	5:42	6:51
8	13.1	5:44	6:48
9	13.0	5:46	6:45
10	12.9	5:48	6:43
11	12.8	5:50	6:40
12	12.8	5:52	6:37
13	12.7	5:53	6:34
14	12.6	5:55	6:32
15	12.5	5:57	6:29
16	12.4	5:59	6:26
17	12.4	6:01	6:24
18	12.3	6:03	6:21
19	12.2	6:05	6:18
20	12.1	6:07	6:15
21	12.1	6:09	6:13
22	12.0	6:11	6:10
23	11.9	6:13	6:07
24	11.8	6:15	6:05
25	11.7	6:17	6:02
26	11.7	6:19	5:59
27	11.6	6:21	5:57
28	11.5	6:23	5:54
29	11.4	6:25	5:51
30	11.4	6:27	5:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.51 kWh/m².

For context, solar energy here swings from a low near 0.38 kWh/m² to a high of 4.8 kWh/m² in May across the year — September's 2.51 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)	3.1	3.0	3.0	3.0	2.9	2.9	2.9	2.8	2.8	2.7	2.7	2.7	2.6	2.6	2.6	2.5	2.5	2.4	2.4	2.4	2.3	2.3	2.2	2.2	2.1	2.1	2.1	2.0	2.0	1.9
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	Dim	Dim

	Solar energy (kWh/m²)	Level
1	3.1	Moderate
2	3.0	Moderate
3	3.0	Moderate
4	3.0	Moderate
5	2.9	Moderate
6	2.9	Moderate
7	2.9	Moderate
8	2.8	Moderate
9	2.8	Moderate
10	2.7	Moderate
11	2.7	Moderate
12	2.7	Moderate
13	2.6	Moderate
14	2.6	Moderate
15	2.6	Moderate
16	2.5	Moderate
17	2.5	Moderate
18	2.4	Moderate
19	2.4	Moderate
20	2.4	Moderate
21	2.3	Moderate
22	2.3	Moderate
23	2.2	Moderate
24	2.2	Moderate
25	2.1	Moderate
26	2.1	Moderate
27	2.1	Moderate
28	2.0	Moderate
29	2.0	Dim
30	1.9	Dim

Planning a trip in September

Is September a good time to visit Ayr?

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

3.4

Sightseeing

3rd-best month of the year

—

Beach & pool

never really warm enough

September is a weaker month for outdoor sightseeing in Ayr.

What to pack for Ayr in September

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

In September, Ayr sees daytime highs around 14°C and nights near 12°C. Pack rain gear. Worth having: a warm layer and a windbreaker. About 17 days see rain.

rain geara warm layera windbreaker

Sea temperature near Ayr in September

The nearest coast averages about 14°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in August at about 15°C and coldest in February near 7°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	8	7	7	8	10	13	15	15	14	12	11	9
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Cool	Bracing	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	8	Bracing
Feb	7	Bracing
Mar	7	Bracing
Apr	8	Bracing
May	10	Bracing
Jun	13	Bracing
Jul	15	Bracing
Aug	15	Cool
Sep	14	Bracing
Oct	12	Bracing
Nov	11	Bracing
Dec	9	Bracing

UV index in Ayr in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ayr peaks around June 23 at about 5 (high) — a little sun protection helps at midday. It bottoms out near December 20 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 5 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	0	1	2	3	5	5	5	5	3	2	1	0
Level	Low	Low	Moderate	Moderate	Moderate	High	High	Moderate	Moderate	Low	Low	Low

	UV index (midday)	Level
Jan	0	Low
Feb	1	Low
Mar	2	Moderate
Apr	3	Moderate
May	5	Moderate
Jun	5	High
Jul	5	High
Aug	5	Moderate
Sep	3	Moderate
Oct	2	Low
Nov	1	Low
Dec	0	Low

Location & terrain

Where is Ayr?

Ayr sits at 55.5°N, 4.6°W, 13 m above sea level, in United Kingdom. The nearest listed city is Irvine, 17 km away.

Topography around Ayr

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

Within 3 km, the terrain around Ayr has only modest variations in elevation — a maximum elevation change of 59 m around an average of 9 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 413 m; within 80 km, large variations in elevation — a maximum elevation change of 946 m.

The land around Ayr is covered by water (43%) and artificial surfaces (26%) within 3 km, grassland (45%) and water (36%) within 16 km, and grassland (49%) and water (29%) within 80 km.

3 km

59 m

water 43%

16 km

413 m

grassland 45%

80 km

946 m

grassland 49%

treesgrasslandcroplandartificial surfaceswater

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

September weather nearby: Irvine 17 km · Kilmarnock 19 km · Kilwinning 22 km · Newton Mearns 39 km · Barrhead 40 km · Johnstone 41 km · Paisley 43 km · East Kilbride 44 km

United Kingdom travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type D / G / M; 230 V · 50 Hz
Prices: ≈ 89% of US; price level, 2025
GDP per capita: $57,602; 2025
Happiness: 6.7 / 10; World Happiness, 2025
Safe drinking water: 100%; of population, 2024
Homicide rate: 1.1; per 100k, 2021
Road deaths: 3.2; per 100k/yr, 2019
Income group: High; World Bank
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 Ayr (55.4627°, -4.6339°, elevation 13 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. 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	15	12
2	15	12
3	15	12
4	15	12
5	15	12
6	15	12
7	15	12
8	15	12
9	15	12
10	15	12
11	14	12
12	14	12
13	14	12
14	14	12
15	14	12
16	14	12
17	14	11
18	14	11
19	14	11
20	14	11
21	14	11
22	14	11
23	14	11
24	14	11
25	14	11
26	14	11
27	13	11
28	13	11
29	13	11
30	13	11

	Clearer (%)	Cloudier (%)
1	32	68
2	32	68
3	31	69
4	31	69
5	31	69
6	29	71
7	29	71
8	29	71
9	29	71
10	29	71
11	29	71
12	29	71
13	30	70
14	31	69
15	32	68
16	32	68
17	32	68
18	32	68
19	32	68
20	31	69
21	30	70
22	30	70
23	30	70
24	30	70
25	30	70
26	29	71
27	28	72
28	28	72
29	28	72
30	28	72

	Rain chance (%)
1	55
2	56
3	56
4	56
5	56
6	56
7	56
8	56
9	56
10	56
11	55
12	55
13	54
14	54
15	53
16	52
17	52
18	52
19	52
20	52
21	53
22	53
23	55
24	56
25	57
26	58
27	60
28	61
29	62
30	62

	Dry (%)	Comfortable (%)
1	84	16
2	84	16
3	85	15
4	85	15
5	86	14
6	86	14
7	86	14
8	87	13
9	87	13
10	88	12
11	89	11
12	89	11
13	90	10
14	91	9
15	91	9
16	92	8
17	92	8
18	93	7
19	93	7
20	93	7
21	94	6
22	94	6
23	95	5
24	95	5
25	95	5
26	95	5
27	96	4
28	96	4
29	96	4
30	97	3

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

	Clearer (%)	Cloudier (%)
1	32	68
2	32	68
3	31	69
4	31	69
5	31	69
6	29	71
7	29	71
8	29	71
9	29	71
10	29	71
11	29	71
12	29	71
13	30	70
14	31	69
15	32	68
16	32	68
17	32	68
18	32	68
19	32	68
20	31	69
21	30	70
22	30	70
23	30	70
24	30	70
25	30	70
26	29	71
27	28	72
28	28	72
29	28	72
30	28	72

	Rain chance (%)
1	55
2	56
3	56
4	56
5	56
6	56
7	56
8	56
9	56
10	56
11	55
12	55
13	54
14	54
15	53
16	52
17	52
18	52
19	52
20	52
21	53
22	53
23	55
24	56
25	57
26	58
27	60
28	61
29	62
30	62

	Dry (%)	Comfortable (%)
1	84	16
2	84	16
3	85	15
4	85	15
5	86	14
6	86	14
7	86	14
8	87	13
9	87	13
10	88	12
11	89	11
12	89	11
13	90	10
14	91	9
15	91	9
16	92	8
17	92	8
18	93	7
19	93	7
20	93	7
21	94	6
22	94	6
23	95	5
24	95	5
25	95	5
26	95	5
27	96	4
28	96	4
29	96	4
30	97	3

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

	Clearer (%)	Cloudier (%)
1	32	68
2	32	68
3	31	69
4	31	69
5	31	69
6	29	71
7	29	71
8	29	71
9	29	71
10	29	71
11	29	71
12	29	71
13	30	70
14	31	69
15	32	68
16	32	68
17	32	68
18	32	68
19	32	68
20	31	69
21	30	70
22	30	70
23	30	70
24	30	70
25	30	70
26	29	71
27	28	72
28	28	72
29	28	72
30	28	72

	Rain chance (%)
1	55
2	56
3	56
4	56
5	56
6	56
7	56
8	56
9	56
10	56
11	55
12	55
13	54
14	54
15	53
16	52
17	52
18	52
19	52
20	52
21	53
22	53
23	55
24	56
25	57
26	58
27	60
28	61
29	62
30	62

	Dry (%)	Comfortable (%)
1	84	16
2	84	16
3	85	15
4	85	15
5	86	14
6	86	14
7	86	14
8	87	13
9	87	13
10	88	12
11	89	11
12	89	11
13	90	10
14	91	9
15	91	9
16	92	8
17	92	8
18	93	7
19	93	7
20	93	7
21	94	6
22	94	6
23	95	5
24	95	5
25	95	5
26	95	5
27	96	4
28	96	4
29	96	4
30	97	3