Alloa weather in September

In September, Alloa sees average daytime highs of 16°C and overnight lows near 9°C, with 66 mm of rain across 12.1 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 17°C in the first days to 14°C by the end. The sky is clear or mostly clear about 7% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of September to 11 h 18 min by month's end. Set against the rest of the year, September is Alloa's 8th-clearest and 8th-windiest month. For the whole year in context, see Alloa's year-round climate.

Daytime high: 16°; 4th warmest
Overnight low: 9°; 9th coldest
Rainfall: 66 mm; 12.1 wet days
Daylight: 12 h 30 min; 5:56 AM – 6:23 PM
Cloud cover: 77%; 8th clearest
Wind: 13 km/h; 8th windiest
Solar energy: 2.44 kWh/m²
Travel score: 4.4; out of 10

Alloa is town in Clackmannanshire, Scotland, UK.

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

← August Alloa 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 14°C by the end.

A typical September day in Alloa reaches about 16°C in the afternoon and slips back to 9°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 19°C. Set against its neighbours, September runs about 2°C cooler than August and about 4°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)	17	17	17	17	17	17	17	17	16	16	16	16	16	16	16	16	16	16	15	15	15	15	15	15	15	15	15	15	14	14
Avg low (°C)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	9	9	9	9	9	8	8	8	8

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

How September really feels in Alloa

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.

Alloa weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	6° / 2°	93	15.4	3	7.3	0.5
Feb	7° / 2°	77	13.2	2.6	9.1	0.8
Mar	9° / 3°	72	13.9	1.8	11.4	1.5
Apr	11° / 4°	62	13	0.7	13.8	2.5
May	14° / 7°	65	12.9	0.1	16	3.7
Jun	17° / 10°	73	13.3	0	17.2	4.6
Jul	18° / 11°	77	14.4	0	16.7	5.1
Aug	18° / 11°	84	14.1	0	14.9	5.1
Sep	16° / 9°	66	12.1	0	12.5	4.4
Oct	12° / 7°	92	14.2	0	10.1	2.9
Nov	9° / 4°	85	14.7	0.6	7.9	1.5
Dec	7° / 2°	92	14.4	2.2	6.8	0.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% 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 78%.

	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 (%)	22	22	22	21	22	22	21	21	21	21	22	22	21	22	22	22	23	23	22	22	22	22	22	23	23	23	23	24	23	22
Cloudier (%)	78	78	78	79	78	78	79	79	79	79	78	78	79	78	78	78	77	77	78	78	78	78	78	77	77	77	77	76	77	78

	Clearer (%)	Cloudier (%)
1	22	78
2	22	78
3	22	78
4	21	79
5	22	78
6	22	78
7	21	79
8	21	79
9	21	79
10	21	79
11	22	78
12	22	78
13	21	79
14	22	78
15	22	78
16	22	78
17	23	77
18	23	77
19	22	78
20	22	78
21	22	78
22	22	78
23	22	78
24	23	77
25	23	77
26	23	77
27	23	77
28	24	76
29	23	77
30	22	78

Chance of precipitation in September

Any precipitation

Alloa gets around 66 mm of rain over 12.1 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 41% and peaks near 46% 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 (%)	39	39	39	40	40	40	40	41	41	41	40	40	40	40	40	39	39	39	39	39	39	40	41	42	43	44	44	45	46	46

	Rain chance (%)
1	39
2	39
3	39
4	40
5	40
6	40
7	40
8	41
9	41
10	41
11	40
12	40
13	40
14	40
15	40
16	39
17	39
18	39
19	39
20	39
21	39
22	40
23	41
24	42
25	43
26	44
27	44
28	45
29	46
30	46

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 90% 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	84	85	85	85	85	86	86	87	88	88	89	90	91	91	92	92	92	92	93	93	93	93	94	94	94	94	95	95
Comfortable (%)	15	15	15	14	14	14	14	13	13	12	11	11	10	9	9	9	8	8	8	8	7	7	7	7	6	6	6	6	5	5
Humid (%)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)
1	84	15	1
2	84	15	1
3	84	15	1
4	85	14	1
5	85	14	1
6	85	14	1
7	85	14	1
8	86	13	1
9	86	13	1
10	87	12	1
11	88	11	1
12	88	11	1
13	89	10	1
14	90	9	1
15	91	9	0
16	91	9	0
17	92	8	0
18	92	8	0
19	92	8	0
20	92	8	0
21	93	7	0
22	93	7	0
23	93	7	0
24	93	7	0
25	94	6	0
26	94	6	0
27	94	6	0
28	94	6	0
29	95	5	0
30	95	5	0

Wind in September

Winds average 13 km/h in September.

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 42 min at the start of September to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 144 minutes over September. Sunrise moves from 5:25 AM to 6:24 AM, and sunset from 7:04 PM to 5:45 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
Daylight (h)	13.7	13.6	13.5	13.4	13.3	13.3	13.2	13.1	13.0	12.9	12.9	12.8	12.7	12.6	12.5	12.5	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	11.3
Sunrise (AM)	5:25	5:27	5:29	5:31	5:33	5:35	5:37	5:39	5:42	5:44	5:46	5:48	5:50	5:52	5:54	5:56	5:58	6:00	6:02	6:04	6:06	6:08	6:10	6:12	6:14	6:16	6:18	6:20	6:22	6:24
Sunset (PM)	7:04	7:02	6:59	6:56	6:54	6:51	6:48	6:45	6:43	6:40	6:37	6:34	6:32	6:29	6:26	6:23	6:21	6:18	6:15	6:12	6:09	6:07	6:04	6:01	5:58	5:56	5:53	5:50	5:47	5:45

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.7	5:25	7:04
2	13.6	5:27	7:02
3	13.5	5:29	6:59
4	13.4	5:31	6:56
5	13.3	5:33	6:54
6	13.3	5:35	6:51
7	13.2	5:37	6:48
8	13.1	5:39	6:45
9	13.0	5:42	6:43
10	12.9	5:44	6:40
11	12.9	5:46	6:37
12	12.8	5:48	6:34
13	12.7	5:50	6:32
14	12.6	5:52	6:29
15	12.5	5:54	6:26
16	12.5	5:56	6:23
17	12.4	5:58	6:21
18	12.3	6:00	6:18
19	12.2	6:02	6:15
20	12.1	6:04	6:12
21	12.1	6:06	6:09
22	12.0	6:08	6:07
23	11.9	6:10	6:04
24	11.8	6:12	6:01
25	11.7	6:14	5:58
26	11.7	6:16	5:56
27	11.6	6:18	5:53
28	11.5	6:20	5:50
29	11.4	6:22	5:47
30	11.3	6:24	5:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.44 kWh/m².

For context, solar energy here swings from a low near 0.36 kWh/m² to a high of 4.65 kWh/m² in May across the year — September's 2.44 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)	3.0	3.0	2.9	2.9	2.8	2.8	2.8	2.7	2.7	2.7	2.6	2.6	2.6	2.5	2.5	2.5	2.4	2.4	2.3	2.3	2.3	2.2	2.2	2.1	2.1	2.0	2.0	2.0	1.9	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	Dim	Dim	Dim

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

Planning a trip in September

Is September a good time to visit Alloa?

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

4.4

Sightseeing

4th-best month of the year

0.5

Beach & pool

4th-best month of the year

September is a reasonable time to visit Alloa for sightseeing.

What to pack for Alloa in September

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

In September, Alloa sees daytime highs around 16°C and nights near 9°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Alloa in September

The nearest coast averages about 13°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 41 km away) is warmest in August at about 14°C and coldest in February near 6°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)	7	6	6	7	10	12	14	14	13	12	10	8
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	7	Bracing
Feb	6	Bracing
Mar	6	Bracing
Apr	7	Bracing
May	10	Bracing
Jun	12	Bracing
Jul	14	Bracing
Aug	14	Bracing
Sep	13	Bracing
Oct	12	Bracing
Nov	10	Bracing
Dec	8	Bracing

UV index in Alloa 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 Alloa peaks around June 20 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 Alloa?

Alloa sits at 56.1°N, 3.8°W, 22 m above sea level, in United Kingdom. The nearest listed city is Stirling, 9.0 km away.

Topography around Alloa

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

Within 3 km, the terrain around Alloa has only modest variations in elevation — a maximum elevation change of 98 m around an average of 22 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 717 m; within 80 km, large variations in elevation — a maximum elevation change of 1,196 m.

The land around Alloa is covered by cropland (26%), grassland (25%) and trees (21%) within 3 km, grassland (54%) and trees (21%) within 16 km, and grassland (59%) within 80 km.

3 km

98 m

cropland 26%

16 km

717 m

grassland 54%

80 km

1,196 m

grassland 59%

treesgrasslandcroplandartificial surfaceswaterwetland

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

September weather nearby: Stirling 9.0 km · Grangemouth 12 km · Falkirk 13 km · Dunfermline 21 km · Cumbernauld 23 km · Bathgate 25 km · Broxburn 28 km · Livingston 29 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 Alloa (56.1159°, -3.79°, elevation 22 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	17	10
2	17	10
3	17	10
4	17	10
5	17	10
6	17	10
7	17	10
8	17	10
9	16	10
10	16	10
11	16	10
12	16	10
13	16	10
14	16	10
15	16	9
16	16	9
17	16	9
18	16	9
19	15	9
20	15	9
21	15	9
22	15	9
23	15	9
24	15	9
25	15	9
26	15	9
27	15	8
28	15	8
29	14	8
30	14	8

	Clearer (%)	Cloudier (%)
1	22	78
2	22	78
3	22	78
4	21	79
5	22	78
6	22	78
7	21	79
8	21	79
9	21	79
10	21	79
11	22	78
12	22	78
13	21	79
14	22	78
15	22	78
16	22	78
17	23	77
18	23	77
19	22	78
20	22	78
21	22	78
22	22	78
23	22	78
24	23	77
25	23	77
26	23	77
27	23	77
28	24	76
29	23	77
30	22	78

	Rain chance (%)
1	39
2	39
3	39
4	40
5	40
6	40
7	40
8	41
9	41
10	41
11	40
12	40
13	40
14	40
15	40
16	39
17	39
18	39
19	39
20	39
21	39
22	40
23	41
24	42
25	43
26	44
27	44
28	45
29	46
30	46

	Dry (%)	Comfortable (%)	Humid (%)
1	84	15	1
2	84	15	1
3	84	15	1
4	85	14	1
5	85	14	1
6	85	14	1
7	85	14	1
8	86	13	1
9	86	13	1
10	87	12	1
11	88	11	1
12	88	11	1
13	89	10	1
14	90	9	1
15	91	9	0
16	91	9	0
17	92	8	0
18	92	8	0
19	92	8	0
20	92	8	0
21	93	7	0
22	93	7	0
23	93	7	0
24	93	7	0
25	94	6	0
26	94	6	0
27	94	6	0
28	94	6	0
29	95	5	0
30	95	5	0

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

	Clearer (%)	Cloudier (%)
1	22	78
2	22	78
3	22	78
4	21	79
5	22	78
6	22	78
7	21	79
8	21	79
9	21	79
10	21	79
11	22	78
12	22	78
13	21	79
14	22	78
15	22	78
16	22	78
17	23	77
18	23	77
19	22	78
20	22	78
21	22	78
22	22	78
23	22	78
24	23	77
25	23	77
26	23	77
27	23	77
28	24	76
29	23	77
30	22	78

	Rain chance (%)
1	39
2	39
3	39
4	40
5	40
6	40
7	40
8	41
9	41
10	41
11	40
12	40
13	40
14	40
15	40
16	39
17	39
18	39
19	39
20	39
21	39
22	40
23	41
24	42
25	43
26	44
27	44
28	45
29	46
30	46

	Dry (%)	Comfortable (%)	Humid (%)
1	84	15	1
2	84	15	1
3	84	15	1
4	85	14	1
5	85	14	1
6	85	14	1
7	85	14	1
8	86	13	1
9	86	13	1
10	87	12	1
11	88	11	1
12	88	11	1
13	89	10	1
14	90	9	1
15	91	9	0
16	91	9	0
17	92	8	0
18	92	8	0
19	92	8	0
20	92	8	0
21	93	7	0
22	93	7	0
23	93	7	0
24	93	7	0
25	94	6	0
26	94	6	0
27	94	6	0
28	94	6	0
29	95	5	0
30	95	5	0

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

	Clearer (%)	Cloudier (%)
1	22	78
2	22	78
3	22	78
4	21	79
5	22	78
6	22	78
7	21	79
8	21	79
9	21	79
10	21	79
11	22	78
12	22	78
13	21	79
14	22	78
15	22	78
16	22	78
17	23	77
18	23	77
19	22	78
20	22	78
21	22	78
22	22	78
23	22	78
24	23	77
25	23	77
26	23	77
27	23	77
28	24	76
29	23	77
30	22	78

	Rain chance (%)
1	39
2	39
3	39
4	40
5	40
6	40
7	40
8	41
9	41
10	41
11	40
12	40
13	40
14	40
15	40
16	39
17	39
18	39
19	39
20	39
21	39
22	40
23	41
24	42
25	43
26	44
27	44
28	45
29	46
30	46

	Dry (%)	Comfortable (%)	Humid (%)
1	84	15	1
2	84	15	1
3	84	15	1
4	85	14	1
5	85	14	1
6	85	14	1
7	85	14	1
8	86	13	1
9	86	13	1
10	87	12	1
11	88	11	1
12	88	11	1
13	89	10	1
14	90	9	1
15	91	9	0
16	91	9	0
17	92	8	0
18	92	8	0
19	92	8	0
20	92	8	0
21	93	7	0
22	93	7	0
23	93	7	0
24	93	7	0
25	94	6	0
26	94	6	0
27	94	6	0
28	94	6	0
29	95	5	0
30	95	5	0