Cognac weather in September

In September, Cognac sees average daytime highs of 23°C and overnight lows near 13°C, with 55 mm of rain across 8.1 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 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 32% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Cognac's 3rd-clearest and 10th-windiest month. For the whole year in context, see Cognac's year-round climate.

Daytime high
23°
4th warmest
Overnight low
13°
9th coldest
Rainfall
55 mm
8.1 wet days
Daylight
12 h 18 min
6:46 AM – 7:05 PM
Cloud cover
55%
3rd clearest
Wind
11 km/h
10th windiest
Solar energy
4.1 kWh/m²
Travel score
7.1
out of 10
Air quality
Good
PM10 15.9 µg/m³ · 2018

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 21°C by the end.

A typical September day in Cognac reaches about 23°C in the afternoon and slips back to 13°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.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12514
22514
32514
42514
52514
62413
72413
82413
92413
102413
112413
122413
132313
142313
152313
162312
172312
182312
192212
202212
212212
222212
232212
242212
252212
262112
272112
282112
292111
302111

How September really feels in Cognac

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
0
heat index over the day's high
Days feeling ≤ C
0
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.

Cognac 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7611.50.58.91.8
Feb11° / 569.50.510.12.5
Mar14° / 5910.50.111.64.1
Apr17° / 6611.3013.35.1
May20° / 11°6911.8014.76.0
Jun24° / 14°568.9015.46.9
Jul26° / 15°427.4015.17.2
Aug26° / 15°507.6013.97.1
Sep23° / 13°558.1012.37.1
Oct18° / 10°7411.2010.75.6
Nov13° / 7911.909.33.4
Dec10° / 8112.20.18.62.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% 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 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35545
45446
55446
65545
75446
85446
95347
105149
115149
125050
135050
145050
154951
164852
174753
184753
194654
204654
214654
224654
234555
244456
254456
264357
274357
284159
294060
303961

Chance of precipitation in September

Any precipitation

Cognac gets around 55 mm of rain over 8.1 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 28% and peaks near 34% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
122
222
322
422
523
623
724
824
925
1025
1126
1227
1327
1428
1529
1629
1730
1830
1930
2031
2131
2231
2331
2432
2532
2633
2733
2834
2934
3034

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 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14633182
24833172
34933162
45033152
55233141
65333131
75433121
85433121
95633110
105633110
115633110
125733100
135832100
145832100
155832100
165931100
17603190
18603190
19613090
20623080
21623080
22623080
23632980
24632980
25632980
26632980
27642880
28642880
29652780
30652780

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 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 96 minutes over September. Sunrise moves from 6:27 AM to 7:04 AM, and sunset from 7:35 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:277:35
213.16:287:33
313.06:307:31
413.06:317:29
512.96:327:27
612.96:337:25
712.86:357:23
812.86:367:21
912.76:377:19
1012.66:387:17
1112.66:407:15
1212.56:417:13
1312.56:427:11
1412.46:447:09
1512.46:457:07
1612.36:467:05
1712.36:477:03
1812.26:497:01
1912.26:506:59
2012.16:516:57
2112.06:536:55
2212.06:546:53
2311.96:556:51
2411.96:566:49
2511.86:586:47
2611.86:596:45
2711.77:006:43
2811.77:026:41
2911.67:036:39
3011.57:046:37

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.1 kWh/m².

For context, solar energy here swings from a low near 1.12 kWh/m² to a high of 6.08 kWh/m² in June across the year — September's 4.1 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.2Bright
144.1Bright
154.1Bright
164.0Bright
174.0Moderate
183.9Moderate
193.9Moderate
203.8Moderate
213.8Moderate
223.7Moderate
233.7Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.4Moderate
283.4Moderate
293.3Moderate
303.3Moderate
Planning a trip in September

Is September a good time to visit Cognac?

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

7.1
Sightseeing
2nd-best month of the year
5.4
Beach & pool
4th-best month of the year

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

What to pack for Cognac in September

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

In September, Cognac sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

Sea temperature near Cognac in September

The nearest coast averages about 19°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 62 km away) is warmest in August at about 21°C and coldest in February near 10°C.

It's comfortable for a long swim from Jul 19 to Aug 31 — about 1.4 months when the water holds above 20°C.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan11Bracing
Feb10Bracing
Mar11Bracing
Apr13Bracing
May15Cool
Jun18Cool
Jul20Refreshing
Aug21Refreshing
Sep19Cool
Oct17Cool
Nov15Bracing
Dec12Bracing

UV index in Cognac 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 Cognac peaks around July 19 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowJul 19UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr6High
May6High
Jun7Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Cognac?

Cognac sits at 45.7°N, 0.3°W, 28 m above sea level, in France. The nearest listed city is Saintes, 24 km away.

Topography around Cognac

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

Within 3 km, the terrain around Cognac has only modest variations in elevation — a maximum elevation change of 64 m around an average of 27 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 164 m; within 80 km, significant variations in elevation — a maximum elevation change of 367 m.

The land around Cognac is covered by trees (33%), artificial surfaces (30%) and grassland (27%) within 3 km, grassland (38%), cropland (35%) and trees (21%) within 16 km, and cropland (41%), trees (28%) and grassland (21%) within 80 km.

3 km
64 m
16 km
164 m
80 km
367 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Saintes 24 km · Angoulême 38 km · Royan 55 km · Rochefort 57 km · Niort 70 km · La Rochelle 82 km · Libourne 87 km · Blanquefort 91 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
Roman Catholic 47%none 33%Muslim 4%Protestant 2%

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 Cognac (45.6958°, -0.3287°, elevation 28 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).