Challans weather in October

In October, Challans sees average daytime highs of 17°C and overnight lows near 12°C, with 76 mm of rain across 12.1 wet days and about 10.6 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 15°C by the end. The sky is clear or mostly clear about 23% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 9 h 48 min by month's end. Set against the rest of the year, October is Challans's 9th-clearest and 6th-windiest month. For the whole year in context, see Challans's year-round climate.

Daytime high: 17°; 6th warmest
Overnight low: 12°; 8th coldest
Rainfall: 76 mm; 12.1 wet days
Daylight: 10 h 36 min; 7:34 AM – 6:11 PM
Cloud cover: 65%; 9th clearest
Wind: 18 km/h; 6th windiest
Solar energy: 2.46 kWh/m²
Travel score: 5.0; out of 10

Challans is human settlement in France.

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

← September Challans year-round climate November →Best places to visit in October

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 18°C in the first days to 15°C by the end.

A typical October day in Challans reaches about 17°C in the afternoon and slips back to 12°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 20°C. Set against its neighbours, October runs about 4°C cooler than September and about 4°C warmer than November.

	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	31
Avg high (°C)	19	18	18	18	18	18	18	18	18	17	17	17	17	17	17	17	17	17	16	16	16	16	16	16	16	16	16	15	15	15	15
Avg low (°C)	13	13	13	13	13	13	13	13	13	13	12	12	12	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	11	11	11

	Avg high (°C)	Avg low (°C)
1	19	13
2	18	13
3	18	13
4	18	13
5	18	13
6	18	13
7	18	13
8	18	13
9	18	13
10	17	13
11	17	12
12	17	12
13	17	12
14	17	12
15	17	12
16	17	12
17	17	12
18	17	12
19	16	12
20	16	12
21	16	11
22	16	11
23	16	11
24	16	11
25	16	11
26	16	11
27	16	11
28	15	11
29	15	11
30	15	11
31	15	11

Challans weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	9° / 6°	71	11.7	8.8	1.9
Feb	10° / 5°	53	9.6	10	2.1
Mar	12° / 7°	50	10.2	11.6	3.2
Apr	14° / 9°	47	10.1	13.3	4.3
May	18° / 12°	52	9.9	14.8	5.6
Jun	20° / 15°	39	8.3	15.6	6.5
Jul	22° / 16°	37	8.1	15.3	7.2
Aug	22° / 16°	43	7.6	14	7.3
Sep	20° / 14°	52	8.1	12.4	6.7
Oct	17° / 12°	76	12.1	10.6	5.0
Nov	13° / 9°	81	12.6	9.2	3.3
Dec	10° / 6°	81	12.4	8.4	2.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 61%.

	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	31
Clearer (%)	42	42	40	40	40	38	38	38	38	38	39	38	38	38	38	38	38	38	39	39	39	39	39	38	38	37	37	37	38	38	37
Cloudier (%)	58	58	60	60	60	62	62	62	62	62	61	62	62	62	62	62	62	62	61	61	61	61	61	62	62	63	63	63	62	62	63

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
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	39	61
12	38	62
13	38	62
14	38	62
15	38	62
16	38	62
17	38	62
18	38	62
19	39	61
20	39	61
21	39	61
22	39	61
23	39	61
24	38	62
25	38	62
26	37	63
27	37	63
28	37	63
29	38	62
30	38	62
31	37	63

Chance of precipitation in October

Any precipitation

Challans gets around 76 mm of rain over 12.1 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 43% 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	31
Rain chance (%)	36	36	36	36	36	36	36	36	37	37	37	38	38	39	39	40	41	41	42	42	42	42	42	42	42	42	42	42	42	43	43

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

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 62% 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	31
Dry (%)	50	50	51	52	52	53	54	55	55	56	58	58	59	59	60	60	61	62	63	64	66	66	67	69	70	71	72	73	75	77	78
Comfortable (%)	37	37	36	36	36	36	35	35	35	35	34	34	34	34	34	34	34	33	33	32	31	31	30	29	28	27	26	25	23	22	21
Humid (%)	14	13	13	12	12	11	11	10	10	9	8	8	7	7	6	6	5	5	4	4	3	3	3	2	2	2	2	2	2	1	1

	Dry (%)	Comfortable (%)	Humid (%)
1	50	37	14
2	50	37	13
3	51	36	13
4	52	36	12
5	52	36	12
6	53	36	11
7	54	35	11
8	55	35	10
9	55	35	10
10	56	35	9
11	58	34	8
12	58	34	8
13	59	34	7
14	59	34	7
15	60	34	6
16	60	34	6
17	61	34	5
18	62	33	5
19	63	33	4
20	64	32	4
21	66	31	3
22	66	31	3
23	67	30	3
24	69	29	2
25	70	28	2
26	71	27	2
27	72	26	2
28	73	25	2
29	75	23	2
30	77	22	1
31	78	21	1

Wind in October

Winds average 18 km/h in October.

Across October, daily wind ranges from about 17 km/h on the calmest days to 20 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	31
Wind speed (km/h)	17	17	17	17	17	17	17	17	17	17	17	18	18	18	18	18	18	18	18	18	18	19	19	19	19	19	19	19	19	19	20
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	light breeze

	Wind speed (km/h)	Feels
1	17	light breeze
2	17	light breeze
3	17	light breeze
4	17	light breeze
5	17	light breeze
6	17	light breeze
7	17	light breeze
8	17	light breeze
9	17	light breeze
10	17	light breeze
11	17	light breeze
12	18	light breeze
13	18	light breeze
14	18	light breeze
15	18	light breeze
16	18	light breeze
17	18	light breeze
18	18	light breeze
19	18	light breeze
20	18	light breeze
21	18	light breeze
22	19	light breeze
23	19	light breeze
24	19	light breeze
25	19	light breeze
26	19	light breeze
27	19	light breeze
28	19	light breeze
29	19	light breeze
30	19	light breeze
31	20	light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 102 minutes over October. Sunrise moves from 7:12 AM to 7:56 AM, and sunset from 6:41 PM to 5:46 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	31
Daylight (h)	11.5	11.4	11.4	11.3	11.2	11.2	11.1	11.1	11.0	11.0	10.9	10.8	10.8	10.7	10.7	10.6	10.6	10.5	10.5	10.4	10.4	10.3	10.3	10.2	10.1	10.1	10.0	10.0	9.9	9.9	9.8
Sunrise (AM)	7:12	7:14	7:15	7:17	7:18	7:19	7:21	7:22	7:24	7:25	7:26	7:28	7:29	7:31	7:32	7:34	7:35	7:37	7:38	7:40	7:41	7:42	7:44	7:45	7:47	7:48	7:50	7:51	7:53	7:54	7:56
Sunset (PM)	6:41	6:39	6:37	6:35	6:33	6:31	6:29	6:27	6:25	6:23	6:21	6:19	6:17	6:15	6:13	6:11	6:10	6:08	6:06	6:04	6:02	6:01	5:59	5:57	5:56	5:54	5:52	5:51	5:49	5:48	5:46

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.5	7:12	6:41
2	11.4	7:14	6:39
3	11.4	7:15	6:37
4	11.3	7:17	6:35
5	11.2	7:18	6:33
6	11.2	7:19	6:31
7	11.1	7:21	6:29
8	11.1	7:22	6:27
9	11.0	7:24	6:25
10	11.0	7:25	6:23
11	10.9	7:26	6:21
12	10.8	7:28	6:19
13	10.8	7:29	6:17
14	10.7	7:31	6:15
15	10.7	7:32	6:13
16	10.6	7:34	6:11
17	10.6	7:35	6:10
18	10.5	7:37	6:08
19	10.5	7:38	6:06
20	10.4	7:40	6:04
21	10.4	7:41	6:02
22	10.3	7:42	6:01
23	10.3	7:44	5:59
24	10.2	7:45	5:57
25	10.1	7:47	5:56
26	10.1	7:48	5:54
27	10.0	7:50	5:52
28	10.0	7:51	5:51
29	9.9	7:53	5:49
30	9.9	7:54	5:48
31	9.8	7:56	5:46

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.46 kWh/m².

For context, solar energy here swings from a low near 1.04 kWh/m² to a high of 6.28 kWh/m² in June across the year — October's 2.46 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	31
Solar energy (kWh/m²)	3.1	3.1	3.0	2.9	2.9	2.8	2.8	2.7	2.7	2.7	2.6	2.6	2.6	2.5	2.5	2.5	2.4	2.4	2.4	2.3	2.3	2.3	2.2	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	Moderate	Dim	Dim

	Solar energy (kWh/m²)	Level
1	3.1	Moderate
2	3.1	Moderate
3	3.0	Moderate
4	2.9	Moderate
5	2.9	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	2.4	Moderate
20	2.3	Moderate
21	2.3	Moderate
22	2.3	Moderate
23	2.2	Moderate
24	2.2	Moderate
25	2.2	Moderate
26	2.1	Moderate
27	2.1	Moderate
28	2.1	Moderate
29	2.0	Moderate
30	2.0	Dim
31	1.9	Dim

Planning a trip in October

Is October a good time to visit Challans?

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

5.0

Sightseeing

6th-best month of the year

1.1

Beach & pool

6th-best month of the year

October is a reasonable time to visit Challans for sightseeing.

What to pack for Challans in October

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

In October, Challans sees daytime highs around 17°C and nights near 12°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Challans in October

The nearest coast averages about 16°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 km away) is warmest in August at about 19°C and coldest in February near 9°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)	10	9	10	12	14	17	18	19	18	16	14	11
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Cool	Cool	Cool	Cool	Cool	Bracing	Bracing

	Sea temperature (°C)	Comfort
Jan	10	Bracing
Feb	9	Bracing
Mar	10	Bracing
Apr	12	Bracing
May	14	Bracing
Jun	17	Cool
Jul	18	Cool
Aug	19	Cool
Sep	18	Cool
Oct	16	Cool
Nov	14	Bracing
Dec	11	Bracing

UV index in Challans in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Challans peaks around August 10 at about 7 (very 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 7 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	4	5	6	7	7	7	5	3	2	1
Level	Low	Low	Moderate	High	High	High	High	Very high	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Low
Mar	4	Moderate
Apr	5	High
May	6	High
Jun	7	High
Jul	7	High
Aug	7	Very high
Sep	5	Moderate
Oct	3	Moderate
Nov	2	Low
Dec	1	Low

Location & terrain

Where is Challans?

Challans sits at 46.8°N, 1.9°W, 13 m above sea level, in France. The nearest listed city is Les Sables-d'Olonne, 39 km away.

Topography around Challans

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

Within 3 km, the terrain around Challans has only modest variations in elevation — a maximum elevation change of 44 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 84 m; within 80 km, significant variations in elevation — a maximum elevation change of 340 m.

The land around Challans is covered by grassland (37%), artificial surfaces (30%) and trees (26%) within 3 km, grassland (54%) and cropland (22%) within 16 km, and water (36%), grassland (26%) and cropland (22%) within 80 km.

3 km

44 m

grassland 37%

16 km

84 m

grassland 54%

80 km

340 m

water 36%

treesgrasslandcroplandartificial surfaceswaterwetland

← September Challans year-round climate November →Best places to visit in October

October weather nearby: Les Sables-d'Olonne 39 km · La Roche-sur-Yon 40 km · Bouguenais 42 km · Couëron 43 km · Saint-Herblain 44 km · Rezé 45 km · Vertou 47 km · Nantes 48 km

France travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / E; 230 V · 50 Hz
Prices: ≈ 77% of US; price level, 2025
GDP per capita: $48,986; 2025
Happiness: 6.6 / 10; World Happiness, 2025
Safe drinking water: 100%; of population, 2024
Homicide rate: 1.3; per 100k, 2023
Road deaths: 5.1; per 100k/yr, 2019
Income group: High; World Bank
English: Moderate; EF EPI 539
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 Challans (46.8458°, -1.8794°, 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	19	13
2	18	13
3	18	13
4	18	13
5	18	13
6	18	13
7	18	13
8	18	13
9	18	13
10	17	13
11	17	12
12	17	12
13	17	12
14	17	12
15	17	12
16	17	12
17	17	12
18	17	12
19	16	12
20	16	12
21	16	11
22	16	11
23	16	11
24	16	11
25	16	11
26	16	11
27	16	11
28	15	11
29	15	11
30	15	11
31	15	11

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
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	39	61
12	38	62
13	38	62
14	38	62
15	38	62
16	38	62
17	38	62
18	38	62
19	39	61
20	39	61
21	39	61
22	39	61
23	39	61
24	38	62
25	38	62
26	37	63
27	37	63
28	37	63
29	38	62
30	38	62
31	37	63

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

	Dry (%)	Comfortable (%)	Humid (%)
1	50	37	14
2	50	37	13
3	51	36	13
4	52	36	12
5	52	36	12
6	53	36	11
7	54	35	11
8	55	35	10
9	55	35	10
10	56	35	9
11	58	34	8
12	58	34	8
13	59	34	7
14	59	34	7
15	60	34	6
16	60	34	6
17	61	34	5
18	62	33	5
19	63	33	4
20	64	32	4
21	66	31	3
22	66	31	3
23	67	30	3
24	69	29	2
25	70	28	2
26	71	27	2
27	72	26	2
28	73	25	2
29	75	23	2
30	77	22	1
31	78	21	1

	Avg high (°C)	Avg low (°C)
1	19	13
2	18	13
3	18	13
4	18	13
5	18	13
6	18	13
7	18	13
8	18	13
9	18	13
10	17	13
11	17	12
12	17	12
13	17	12
14	17	12
15	17	12
16	17	12
17	17	12
18	17	12
19	16	12
20	16	12
21	16	11
22	16	11
23	16	11
24	16	11
25	16	11
26	16	11
27	16	11
28	15	11
29	15	11
30	15	11
31	15	11

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
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	39	61
12	38	62
13	38	62
14	38	62
15	38	62
16	38	62
17	38	62
18	38	62
19	39	61
20	39	61
21	39	61
22	39	61
23	39	61
24	38	62
25	38	62
26	37	63
27	37	63
28	37	63
29	38	62
30	38	62
31	37	63

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

	Dry (%)	Comfortable (%)	Humid (%)
1	50	37	14
2	50	37	13
3	51	36	13
4	52	36	12
5	52	36	12
6	53	36	11
7	54	35	11
8	55	35	10
9	55	35	10
10	56	35	9
11	58	34	8
12	58	34	8
13	59	34	7
14	59	34	7
15	60	34	6
16	60	34	6
17	61	34	5
18	62	33	5
19	63	33	4
20	64	32	4
21	66	31	3
22	66	31	3
23	67	30	3
24	69	29	2
25	70	28	2
26	71	27	2
27	72	26	2
28	73	25	2
29	75	23	2
30	77	22	1
31	78	21	1

	Avg high (°C)	Avg low (°C)
1	19	13
2	18	13
3	18	13
4	18	13
5	18	13
6	18	13
7	18	13
8	18	13
9	18	13
10	17	13
11	17	12
12	17	12
13	17	12
14	17	12
15	17	12
16	17	12
17	17	12
18	17	12
19	16	12
20	16	12
21	16	11
22	16	11
23	16	11
24	16	11
25	16	11
26	16	11
27	16	11
28	15	11
29	15	11
30	15	11
31	15	11

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
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	39	61
12	38	62
13	38	62
14	38	62
15	38	62
16	38	62
17	38	62
18	38	62
19	39	61
20	39	61
21	39	61
22	39	61
23	39	61
24	38	62
25	38	62
26	37	63
27	37	63
28	37	63
29	38	62
30	38	62
31	37	63

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

	Dry (%)	Comfortable (%)	Humid (%)
1	50	37	14
2	50	37	13
3	51	36	13
4	52	36	12
5	52	36	12
6	53	36	11
7	54	35	11
8	55	35	10
9	55	35	10
10	56	35	9
11	58	34	8
12	58	34	8
13	59	34	7
14	59	34	7
15	60	34	6
16	60	34	6
17	61	34	5
18	62	33	5
19	63	33	4
20	64	32	4
21	66	31	3
22	66	31	3
23	67	30	3
24	69	29	2
25	70	28	2
26	71	27	2
27	72	26	2
28	73	25	2
29	75	23	2
30	77	22	1
31	78	21	1