Niort weather in September

In September, Niort sees average daytime highs of 22°C and overnight lows near 12°C, with 51 mm of rain across 7.9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 21°C by the end. The sky is clear or mostly clear about 31% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 12 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Niort's 3rd-clearest and 10th-windiest month. For the whole year in context, see Niort's year-round climate.

Daytime high: 22°; 4th warmest
Overnight low: 12°; 9th coldest
Rainfall: 51 mm; 7.9 wet days
Daylight: 12 h 18 min; 6:46 AM – 7:06 PM
Cloud cover: 56%; 3rd clearest
Wind: 12 km/h; 10th windiest
Solar energy: 4.04 kWh/m²
Travel score: 7.0; out of 10

Air quality: Good; PM2.5 8.8 µg/m³ · 2019

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

← August Niort 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 21°C by the end.

A typical September day in Niort reaches about 22°C in the afternoon and slips back to 12°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°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	24	24	24	23	23	23	23	23	23	23	22	22	22	22	22	22	22	22	21	21	21	21	21	21	20	20
Avg low (°C)	14	14	14	14	13	13	13	13	13	13	13	13	13	12	12	12	12	12	12	12	12	12	12	12	12	11	11	11	11	11

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

How September really feels in Niort

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.

Niort 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	9° / 3°	80	11.6	0.6	8.8	1.7
Feb	10° / 3°	60	9.7	0.6	10	2.3
Mar	14° / 5°	61	10.7	0.1	11.6	3.8
Apr	16° / 7°	64	10.6	0	13.3	4.9
May	20° / 10°	68	11.4	0	14.7	6.0
Jun	23° / 13°	57	9.1	0	15.5	6.9
Jul	25° / 15°	41	6.9	0	15.2	7.3
Aug	26° / 15°	47	7.7	0	14	7.2
Sep	22° / 12°	51	7.9	0	12.3	7.0
Oct	18° / 10°	79	12.1	0	10.7	5.4
Nov	13° / 6°	83	11.9	0.1	9.2	3.2
Dec	10° / 4°	87	11.9	0.1	8.5	2.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% 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 53%. Skies tend to cloud over as the month goes on.

	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 (%)	53	53	53	53	53	53	53	52	51	51	50	50	50	49	49	47	47	47	46	46	45	44	44	44	43	41	40	40	39	38
Cloudier (%)	47	47	47	47	47	47	47	48	49	49	50	50	50	51	51	53	53	53	54	54	55	56	56	56	57	59	60	60	61	62

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	53	47
6	53	47
7	53	47
8	52	48
9	51	49
10	51	49
11	50	50
12	50	50
13	50	50
14	49	51
15	49	51
16	47	53
17	47	53
18	47	53
19	46	54
20	46	54
21	45	55
22	44	56
23	44	56
24	44	56
25	43	57
26	41	59
27	40	60
28	40	60
29	39	61
30	38	62

Chance of precipitation in September

Any precipitation

Niort gets around 51 mm of rain over 7.9 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 27% and peaks near 33% 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 (%)	22	22	23	23	23	23	24	24	25	25	26	26	27	27	27	28	28	28	28	28	29	29	29	29	30	31	31	32	33	33

	Rain chance (%)
1	22
2	22
3	23
4	23
5	23
6	23
7	24
8	24
9	25
10	25
11	26
12	26
13	27
14	27
15	27
16	28
17	28
18	28
19	28
20	28
21	29
22	29
23	29
24	29
25	30
26	31
27	31
28	32
29	33
30	33

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 59% 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 (%)	48	49	50	51	53	53	55	55	56	56	56	58	58	59	60	60	61	62	62	63	63	63	64	64	64	64	64	65	65	65
Comfortable (%)	32	32	32	32	32	32	31	31	31	31	31	31	31	30	30	30	29	29	29	29	29	29	29	29	29	29	29	28	28	28
Humid (%)	18	17	16	15	14	14	13	13	12	12	12	11	11	11	10	10	10	9	9	8	8	8	7	7	7	7	7	7	7	7
Muggy (%)	2	2	2	2	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	48	32	18	2
2	49	32	17	2
3	50	32	16	2
4	51	32	15	2
5	53	32	14	1
6	53	32	14	1
7	55	31	13	1
8	55	31	13	1
9	56	31	12	1
10	56	31	12	1
11	56	31	12	1
12	58	31	11	0
13	58	31	11	0
14	59	30	11	0
15	60	30	10	0
16	60	30	10	0
17	61	29	10	0
18	62	29	9	0
19	62	29	9	0
20	63	29	8	0
21	63	29	8	0
22	63	29	8	0
23	64	29	7	0
24	64	29	7	0
25	64	29	7	0
26	64	29	7	0
27	64	29	7	0
28	65	28	7	0
29	65	28	7	0
30	65	28	7	0

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 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)	11	11	11	11	11	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	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	11	calm
2	11	calm
3	11	calm
4	11	calm
5	11	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	calm
22	12	calm
23	12	calm
24	12	calm
25	12	calm
26	12	calm
27	12	calm
28	12	calm
29	12	calm
30	12	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 12 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 102 minutes over September. Sunrise moves from 6:27 AM to 7:05 AM, and sunset from 7:36 PM to 6:37 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)	13.2	13.1	13.0	13.0	12.9	12.9	12.8	12.8	12.7	12.7	12.6	12.5	12.5	12.4	12.4	12.3	12.3	12.2	12.2	12.1	12.0	12.0	11.9	11.9	11.8	11.8	11.7	11.6	11.6	11.5
Sunrise (AM)	6:27	6:28	6:29	6:31	6:32	6:33	6:35	6:36	6:37	6:39	6:40	6:41	6:43	6:44	6:45	6:46	6:48	6:49	6:50	6:52	6:53	6:54	6:56	6:57	6:58	7:00	7:01	7:02	7:04	7:05
Sunset (PM)	7:36	7:34	7:32	7:30	7:28	7:26	7:24	7:22	7:20	7:18	7:16	7:14	7:12	7:10	7:08	7:06	7:04	7:02	7:00	6:58	6:56	6:54	6:51	6:49	6:47	6:45	6:43	6:41	6:39	6:37

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.2	6:27	7:36
2	13.1	6:28	7:34
3	13.0	6:29	7:32
4	13.0	6:31	7:30
5	12.9	6:32	7:28
6	12.9	6:33	7:26
7	12.8	6:35	7:24
8	12.8	6:36	7:22
9	12.7	6:37	7:20
10	12.7	6:39	7:18
11	12.6	6:40	7:16
12	12.5	6:41	7:14
13	12.5	6:43	7:12
14	12.4	6:44	7:10
15	12.4	6:45	7:08
16	12.3	6:46	7:06
17	12.3	6:48	7:04
18	12.2	6:49	7:02
19	12.2	6:50	7:00
20	12.1	6:52	6:58
21	12.0	6:53	6:56
22	12.0	6:54	6:54
23	11.9	6:56	6:51
24	11.9	6:57	6:49
25	11.8	6:58	6:47
26	11.8	7:00	6:45
27	11.7	7:01	6:43
28	11.6	7:02	6:41
29	11.6	7:04	6:39
30	11.5	7:05	6:37

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.04 kWh/m².

For context, solar energy here swings from a low near 1.07 kWh/m² to a high of 6.03 kWh/m² in June across the year — September's 4.04 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)	4.7	4.7	4.7	4.6	4.6	4.5	4.5	4.4	4.4	4.3	4.3	4.2	4.2	4.1	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	3.2	3.2
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.7	Bright
2	4.7	Bright
3	4.7	Bright
4	4.6	Bright
5	4.6	Bright
6	4.5	Bright
7	4.5	Bright
8	4.4	Bright
9	4.4	Bright
10	4.3	Bright
11	4.3	Bright
12	4.2	Bright
13	4.2	Bright
14	4.1	Bright
15	4.0	Bright
16	4.0	Moderate
17	3.9	Moderate
18	3.9	Moderate
19	3.8	Moderate
20	3.8	Moderate
21	3.7	Moderate
22	3.6	Moderate
23	3.6	Moderate
24	3.5	Moderate
25	3.5	Moderate
26	3.4	Moderate
27	3.4	Moderate
28	3.3	Moderate
29	3.2	Moderate
30	3.2	Moderate

Planning a trip in September

Is September a good time to visit Niort?

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

7.0

Sightseeing

3rd-best month of the year

5.1

Beach & pool

4th-best month of the year

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

What to pack for Niort in September

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

In September, Niort sees daytime highs around 22°C and nights near 12°C. Worth packing: light clothes. About 8 days see rain.

light clothes

UV index in Niort 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 Niort peaks around July 20 at about 8 (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	6	6	7	8	7	5	3	2	1
Level	Low	Low	Moderate	High	High	Very high	Very high	Very high	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Low
Mar	4	Moderate
Apr	6	High
May	6	High
Jun	7	Very high
Jul	8	Very high
Aug	7	Very high
Sep	5	Moderate
Oct	3	Moderate
Nov	2	Low
Dec	1	Low

Location & terrain

Where is Niort?

Niort sits at 46.3°N, 0.5°W, 21 m above sea level, in France. The nearest listed city is Fontenay-le-Comte, 31 km away.

Topography around Niort

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

Within 3 km, the terrain around Niort has only modest variations in elevation — a maximum elevation change of 60 m around an average of 29 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 160 m; within 80 km, significant variations in elevation — a maximum elevation change of 305 m.

The land around Niort is covered by artificial surfaces (49%) and trees (22%) within 3 km, cropland (65%) within 16 km, and cropland (55%) and grassland (21%) within 80 km.

3 km

60 m

artificial surfaces 49%

16 km

160 m

cropland 65%

80 km

305 m

cropland 55%

treesgrasslandcroplandartificial surfaceswater

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

September weather nearby: Fontenay-le-Comte 31 km · La Rochelle 56 km · Rochefort 58 km · Bressuire 58 km · Saintes 65 km · Poitiers 68 km · Cognac 70 km · Les Herbiers 74 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 Niort (46.3231°, -0.4588°, elevation 21 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. 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	14
2	24	14
3	24	14
4	24	14
5	24	13
6	24	13
7	24	13
8	23	13
9	23	13
10	23	13
11	23	13
12	23	13
13	23	13
14	23	12
15	22	12
16	22	12
17	22	12
18	22	12
19	22	12
20	22	12
21	22	12
22	22	12
23	21	12
24	21	12
25	21	12
26	21	11
27	21	11
28	21	11
29	20	11
30	20	11

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	53	47
6	53	47
7	53	47
8	52	48
9	51	49
10	51	49
11	50	50
12	50	50
13	50	50
14	49	51
15	49	51
16	47	53
17	47	53
18	47	53
19	46	54
20	46	54
21	45	55
22	44	56
23	44	56
24	44	56
25	43	57
26	41	59
27	40	60
28	40	60
29	39	61
30	38	62

	Rain chance (%)
1	22
2	22
3	23
4	23
5	23
6	23
7	24
8	24
9	25
10	25
11	26
12	26
13	27
14	27
15	27
16	28
17	28
18	28
19	28
20	28
21	29
22	29
23	29
24	29
25	30
26	31
27	31
28	32
29	33
30	33

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	48	32	18	2
2	49	32	17	2
3	50	32	16	2
4	51	32	15	2
5	53	32	14	1
6	53	32	14	1
7	55	31	13	1
8	55	31	13	1
9	56	31	12	1
10	56	31	12	1
11	56	31	12	1
12	58	31	11	0
13	58	31	11	0
14	59	30	11	0
15	60	30	10	0
16	60	30	10	0
17	61	29	10	0
18	62	29	9	0
19	62	29	9	0
20	63	29	8	0
21	63	29	8	0
22	63	29	8	0
23	64	29	7	0
24	64	29	7	0
25	64	29	7	0
26	64	29	7	0
27	64	29	7	0
28	65	28	7	0
29	65	28	7	0
30	65	28	7	0

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

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	53	47
6	53	47
7	53	47
8	52	48
9	51	49
10	51	49
11	50	50
12	50	50
13	50	50
14	49	51
15	49	51
16	47	53
17	47	53
18	47	53
19	46	54
20	46	54
21	45	55
22	44	56
23	44	56
24	44	56
25	43	57
26	41	59
27	40	60
28	40	60
29	39	61
30	38	62

	Rain chance (%)
1	22
2	22
3	23
4	23
5	23
6	23
7	24
8	24
9	25
10	25
11	26
12	26
13	27
14	27
15	27
16	28
17	28
18	28
19	28
20	28
21	29
22	29
23	29
24	29
25	30
26	31
27	31
28	32
29	33
30	33

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	48	32	18	2
2	49	32	17	2
3	50	32	16	2
4	51	32	15	2
5	53	32	14	1
6	53	32	14	1
7	55	31	13	1
8	55	31	13	1
9	56	31	12	1
10	56	31	12	1
11	56	31	12	1
12	58	31	11	0
13	58	31	11	0
14	59	30	11	0
15	60	30	10	0
16	60	30	10	0
17	61	29	10	0
18	62	29	9	0
19	62	29	9	0
20	63	29	8	0
21	63	29	8	0
22	63	29	8	0
23	64	29	7	0
24	64	29	7	0
25	64	29	7	0
26	64	29	7	0
27	64	29	7	0
28	65	28	7	0
29	65	28	7	0
30	65	28	7	0

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

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	53	47
6	53	47
7	53	47
8	52	48
9	51	49
10	51	49
11	50	50
12	50	50
13	50	50
14	49	51
15	49	51
16	47	53
17	47	53
18	47	53
19	46	54
20	46	54
21	45	55
22	44	56
23	44	56
24	44	56
25	43	57
26	41	59
27	40	60
28	40	60
29	39	61
30	38	62

	Rain chance (%)
1	22
2	22
3	23
4	23
5	23
6	23
7	24
8	24
9	25
10	25
11	26
12	26
13	27
14	27
15	27
16	28
17	28
18	28
19	28
20	28
21	29
22	29
23	29
24	29
25	30
26	31
27	31
28	32
29	33
30	33

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	48	32	18	2
2	49	32	17	2
3	50	32	16	2
4	51	32	15	2
5	53	32	14	1
6	53	32	14	1
7	55	31	13	1
8	55	31	13	1
9	56	31	12	1
10	56	31	12	1
11	56	31	12	1
12	58	31	11	0
13	58	31	11	0
14	59	30	11	0
15	60	30	10	0
16	60	30	10	0
17	61	29	10	0
18	62	29	9	0
19	62	29	9	0
20	63	29	8	0
21	63	29	8	0
22	63	29	8	0
23	64	29	7	0
24	64	29	7	0
25	64	29	7	0
26	64	29	7	0
27	64	29	7	0
28	65	28	7	0
29	65	28	7	0
30	65	28	7	0