Folkestone weather in September

In September, Folkestone sees average daytime highs of 17°C and overnight lows near 15°C, with 70 mm of rain across 11.1 wet days and about 12.4 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 16°C by the end. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Folkestone's 6th-clearest and 7th-windiest month. For the whole year in context, see Folkestone's year-round climate.

Daytime high: 17°; 3rd warmest
Overnight low: 15°; 10th coldest
Rainfall: 70 mm; 11.1 wet days
Daylight: 12 h 24 min; 5:38 AM – 6:01 PM
Cloud cover: 62%; 6th clearest
Wind: 22 km/h; 7th windiest
Solar energy: 3.43 kWh/m²
Travel score: 5.4; out of 10

Folkestone is town and civil parish in Kent, England.

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

← August Folkestone 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 16°C by the end.

A typical September day in Folkestone reaches about 17°C in the afternoon and slips back to 15°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 19°C. Set against its neighbours, September runs about 1°C cooler than August and about 3°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	18	18	18	18	18	18	18	18	18	17	17	17	17	17	17	17	17	17	17	17	17	17	17	16	16	16	16
Avg low (°C)	16	16	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	14	14	14	14	14	14	14	14	14	14	14

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

How September really feels in Folkestone

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.

Folkestone weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	8° / 5°	101	15.3	0.7	8.2	1.1
Feb	7° / 5°	70	12.5	0.9	9.6	1.0
Mar	9° / 6°	55	10.8	0.3	11.5	1.5
Apr	10° / 8°	48	9.6	0.1	13.5	2.4
May	13° / 11°	53	9.8	0	15.3	3.6
Jun	16° / 13°	53	9.2	0	16.2	4.8
Jul	18° / 15°	55	9.6	0	15.9	5.9
Aug	19° / 16°	66	9.8	0	14.4	6.1
Sep	17° / 15°	70	11.1	0	12.4	5.4
Oct	15° / 12°	110	14.6	0	10.4	3.9
Nov	11° / 9°	115	16.4	0.2	8.7	2.4
Dec	9° / 6°	112	15.4	0.7	7.8	1.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% 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 58%.

	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 (%)	44	44	44	45	45	45	45	45	43	43	43	44	44	43	43	43	43	43	43	42	42	42	41	40	39	39	39	38	38	38
Cloudier (%)	56	56	56	55	55	55	55	55	57	57	57	56	56	57	57	57	57	57	57	58	58	58	59	60	61	61	61	62	62	62

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	44	56
4	45	55
5	45	55
6	45	55
7	45	55
8	45	55
9	43	57
10	43	57
11	43	57
12	44	56
13	44	56
14	43	57
15	43	57
16	43	57
17	43	57
18	43	57
19	43	57
20	42	58
21	42	58
22	42	58
23	41	59
24	40	60
25	39	61
26	39	61
27	39	61
28	38	62
29	38	62
30	38	62

Chance of precipitation in September

Any precipitation

Folkestone gets around 70 mm of rain over 11.1 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 37% and peaks near 47% on the wettest days. The odds climb 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 (%)	31	31	32	32	32	33	33	34	34	35	35	35	35	35	36	36	37	37	38	39	39	40	41	42	43	44	45	46	47	47

	Rain chance (%)
1	31
2	31
3	32
4	32
5	32
6	33
7	33
8	34
9	34
10	35
11	35
12	35
13	35
14	35
15	36
16	36
17	37
18	37
19	38
20	39
21	39
22	40
23	41
24	42
25	43
26	44
27	45
28	46
29	47
30	47

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 56% 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 (%)	43	45	47	48	49	51	52	53	53	54	55	55	56	57	57	58	59	59	59	60	60	60	60	61	62	62	63	64	66	66
Comfortable (%)	40	39	37	36	35	34	33	32	32	31	31	31	31	31	31	31	31	32	32	32	33	34	34	34	34	34	34	33	32	32
Humid (%)	17	16	16	16	16	15	15	15	15	15	14	14	13	12	12	11	10	9	9	8	7	6	6	5	4	4	3	3	2	2

	Dry (%)	Comfortable (%)	Humid (%)
1	43	40	17
2	45	39	16
3	47	37	16
4	48	36	16
5	49	35	16
6	51	34	15
7	52	33	15
8	53	32	15
9	53	32	15
10	54	31	15
11	55	31	14
12	55	31	14
13	56	31	13
14	57	31	12
15	57	31	12
16	58	31	11
17	59	31	10
18	59	32	9
19	59	32	9
20	60	32	8
21	60	33	7
22	60	34	6
23	60	34	6
24	61	34	5
25	62	34	4
26	62	34	4
27	63	34	3
28	64	33	3
29	66	32	2
30	66	32	2

Wind in September

Winds average 22 km/h in September.

Across September, daily wind ranges from about 22 km/h on the calmest days to 24 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)	22	22	22	22	22	22	22	22	22	22	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	24	24
Feels	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	breezy	breezy	breezy	breezy

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 24 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 114 minutes over September. Sunrise moves from 5:14 AM to 6:01 AM, and sunset from 6:36 PM to 5:28 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)	13.4	13.3	13.2	13.2	13.1	13.0	13.0	12.9	12.8	12.8	12.7	12.6	12.6	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	11.5	11.5
Sunrise (AM)	5:14	5:16	5:17	5:19	5:20	5:22	5:24	5:25	5:27	5:28	5:30	5:32	5:33	5:35	5:37	5:38	5:40	5:41	5:43	5:45	5:46	5:48	5:50	5:51	5:53	5:54	5:56	5:58	5:59	6:01
Sunset (PM)	6:36	6:34	6:32	6:29	6:27	6:25	6:22	6:20	6:18	6:15	6:13	6:11	6:08	6:06	6:04	6:01	5:59	5:56	5:54	5:52	5:49	5:47	5:45	5:42	5:40	5:38	5:35	5:33	5:30	5:28

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.4	5:14	6:36
2	13.3	5:16	6:34
3	13.2	5:17	6:32
4	13.2	5:19	6:29
5	13.1	5:20	6:27
6	13.0	5:22	6:25
7	13.0	5:24	6:22
8	12.9	5:25	6:20
9	12.8	5:27	6:18
10	12.8	5:28	6:15
11	12.7	5:30	6:13
12	12.6	5:32	6:11
13	12.6	5:33	6:08
14	12.5	5:35	6:06
15	12.4	5:37	6:04
16	12.4	5:38	6:01
17	12.3	5:40	5:59
18	12.2	5:41	5:56
19	12.2	5:43	5:54
20	12.1	5:45	5:52
21	12.0	5:46	5:49
22	12.0	5:48	5:47
23	11.9	5:50	5:45
24	11.9	5:51	5:42
25	11.8	5:53	5:40
26	11.7	5:54	5:38
27	11.7	5:56	5:35
28	11.6	5:58	5:33
29	11.5	5:59	5:30
30	11.5	6:01	5:28

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.43 kWh/m².

For context, solar energy here swings from a low near 0.7 kWh/m² to a high of 5.91 kWh/m² in June across the year — September's 3.43 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)	4.1	4.0	4.0	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	3.0	3.0	2.9	2.9	2.8	2.8	2.7	2.7
Level	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	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.1	Bright
2	4.0	Bright
3	4.0	Bright
4	4.0	Moderate
5	3.9	Moderate
6	3.9	Moderate
7	3.8	Moderate
8	3.8	Moderate
9	3.7	Moderate
10	3.7	Moderate
11	3.6	Moderate
12	3.6	Moderate
13	3.5	Moderate
14	3.5	Moderate
15	3.5	Moderate
16	3.4	Moderate
17	3.4	Moderate
18	3.3	Moderate
19	3.3	Moderate
20	3.2	Moderate
21	3.2	Moderate
22	3.1	Moderate
23	3.0	Moderate
24	3.0	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 Folkestone?

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

5.4

Sightseeing

3rd-best month of the year

1.4

Beach & pool

3rd-best month of the year

September is a reasonable time to visit Folkestone for sightseeing.

What to pack for Folkestone in September

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

In September, Folkestone sees daytime highs around 17°C and nights near 15°C. Worth packing: rain gear and a windbreaker. About 11 days see rain.

rain geara windbreaker

Sea temperature near Folkestone in September

The nearest coast averages about 17°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 15 km away) is warmest in August at about 18°C and coldest in February near 8°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)	9	8	8	9	11	14	16	18	17	16	13	11
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Cool	Cool	Cool	Cool	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	9	Bracing
Feb	8	Bracing
Mar	8	Bracing
Apr	9	Bracing
May	11	Bracing
Jun	14	Bracing
Jul	16	Cool
Aug	18	Cool
Sep	17	Cool
Oct	16	Cool
Nov	13	Bracing
Dec	11	Bracing

UV index in Folkestone 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 Folkestone peaks around June 22 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 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	3	6	6	6	6	4	2	1	1
Level	Low	Low	Moderate	Moderate	High	High	High	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	1	Low
Mar	3	Moderate
Apr	3	Moderate
May	6	High
Jun	6	High
Jul	6	High
Aug	6	High
Sep	4	Moderate
Oct	2	Moderate
Nov	1	Low
Dec	1	Low

Location & terrain

Where is Folkestone?

Folkestone sits at 51.1°N, 1.2°E, 46 m above sea level, in United Kingdom. The nearest listed city is Dover, 11 km away.

Topography around Folkestone

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

Within 3 km, the terrain around Folkestone has only modest variations in elevation — a maximum elevation change of 177 m around an average of 45 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 196 m; within 80 km, significant variations in elevation — a maximum elevation change of 319 m.

The land around Folkestone is covered by water (40%), artificial surfaces (22%) and trees (20%) within 3 km, water (49%) within 16 km, and water (53%) within 80 km.

3 km

177 m

water 40%

16 km

196 m

water 49%

80 km

319 m

water 53%

treesgrasslandcroplandartificial surfacesbare terrainwater

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

September weather nearby: Dover 11 km · Ashford 22 km · Deal 23 km · Canterbury 23 km · Faversham 32 km · Herne Bay 33 km · Whitstable 33 km · Ramsgate 33 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 Folkestone (51.0817°, 1.1673°, elevation 46 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	18	16
2	18	16
3	18	15
4	18	15
5	18	15
6	18	15
7	18	15
8	18	15
9	18	15
10	18	15
11	18	15
12	18	15
13	17	15
14	17	15
15	17	15
16	17	15
17	17	15
18	17	15
19	17	15
20	17	14
21	17	14
22	17	14
23	17	14
24	17	14
25	17	14
26	17	14
27	16	14
28	16	14
29	16	14
30	16	14

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	44	56
4	45	55
5	45	55
6	45	55
7	45	55
8	45	55
9	43	57
10	43	57
11	43	57
12	44	56
13	44	56
14	43	57
15	43	57
16	43	57
17	43	57
18	43	57
19	43	57
20	42	58
21	42	58
22	42	58
23	41	59
24	40	60
25	39	61
26	39	61
27	39	61
28	38	62
29	38	62
30	38	62

	Rain chance (%)
1	31
2	31
3	32
4	32
5	32
6	33
7	33
8	34
9	34
10	35
11	35
12	35
13	35
14	35
15	36
16	36
17	37
18	37
19	38
20	39
21	39
22	40
23	41
24	42
25	43
26	44
27	45
28	46
29	47
30	47

	Dry (%)	Comfortable (%)	Humid (%)
1	43	40	17
2	45	39	16
3	47	37	16
4	48	36	16
5	49	35	16
6	51	34	15
7	52	33	15
8	53	32	15
9	53	32	15
10	54	31	15
11	55	31	14
12	55	31	14
13	56	31	13
14	57	31	12
15	57	31	12
16	58	31	11
17	59	31	10
18	59	32	9
19	59	32	9
20	60	32	8
21	60	33	7
22	60	34	6
23	60	34	6
24	61	34	5
25	62	34	4
26	62	34	4
27	63	34	3
28	64	33	3
29	66	32	2
30	66	32	2

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

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	44	56
4	45	55
5	45	55
6	45	55
7	45	55
8	45	55
9	43	57
10	43	57
11	43	57
12	44	56
13	44	56
14	43	57
15	43	57
16	43	57
17	43	57
18	43	57
19	43	57
20	42	58
21	42	58
22	42	58
23	41	59
24	40	60
25	39	61
26	39	61
27	39	61
28	38	62
29	38	62
30	38	62

	Rain chance (%)
1	31
2	31
3	32
4	32
5	32
6	33
7	33
8	34
9	34
10	35
11	35
12	35
13	35
14	35
15	36
16	36
17	37
18	37
19	38
20	39
21	39
22	40
23	41
24	42
25	43
26	44
27	45
28	46
29	47
30	47

	Dry (%)	Comfortable (%)	Humid (%)
1	43	40	17
2	45	39	16
3	47	37	16
4	48	36	16
5	49	35	16
6	51	34	15
7	52	33	15
8	53	32	15
9	53	32	15
10	54	31	15
11	55	31	14
12	55	31	14
13	56	31	13
14	57	31	12
15	57	31	12
16	58	31	11
17	59	31	10
18	59	32	9
19	59	32	9
20	60	32	8
21	60	33	7
22	60	34	6
23	60	34	6
24	61	34	5
25	62	34	4
26	62	34	4
27	63	34	3
28	64	33	3
29	66	32	2
30	66	32	2

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

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	44	56
4	45	55
5	45	55
6	45	55
7	45	55
8	45	55
9	43	57
10	43	57
11	43	57
12	44	56
13	44	56
14	43	57
15	43	57
16	43	57
17	43	57
18	43	57
19	43	57
20	42	58
21	42	58
22	42	58
23	41	59
24	40	60
25	39	61
26	39	61
27	39	61
28	38	62
29	38	62
30	38	62

	Rain chance (%)
1	31
2	31
3	32
4	32
5	32
6	33
7	33
8	34
9	34
10	35
11	35
12	35
13	35
14	35
15	36
16	36
17	37
18	37
19	38
20	39
21	39
22	40
23	41
24	42
25	43
26	44
27	45
28	46
29	47
30	47

	Dry (%)	Comfortable (%)	Humid (%)
1	43	40	17
2	45	39	16
3	47	37	16
4	48	36	16
5	49	35	16
6	51	34	15
7	52	33	15
8	53	32	15
9	53	32	15
10	54	31	15
11	55	31	14
12	55	31	14
13	56	31	13
14	57	31	12
15	57	31	12
16	58	31	11
17	59	31	10
18	59	32	9
19	59	32	9
20	60	32	8
21	60	33	7
22	60	34	6
23	60	34	6
24	61	34	5
25	62	34	4
26	62	34	4
27	63	34	3
28	64	33	3
29	66	32	2
30	66	32	2