Agen weather in September

In September, Agen sees average daytime highs of 25°C and overnight lows near 14°C, with 58 mm of rain across 8.6 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 23°C by the end. The sky is clear or mostly clear about 36% 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 36 min by month's end. Set against the rest of the year, September is Agen's 3rd-clearest and 10th-windiest month. For the whole year in context, see Agen's year-round climate.

Daytime high
25°
4th warmest
Overnight low
14°
9th coldest
Rainfall
58 mm
8.6 wet days
Daylight
12 h 18 min
6:43 AM – 7:01 PM
Cloud cover
52%
3rd clearest
Wind
10 km/h
10th windiest
Solar energy
4.3 kWh/m²
Travel score
7.1
out of 10
Air quality
Excellent
PM10 13.8 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 27°C in the first days to 23°C by the end.

A typical September day in Agen reaches about 25°C in the afternoon and slips back to 14°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 31°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12715
22715
32715
42615
52615
62615
72614
82614
92614
102614
112514
122514
132514
142514
152514
162513
172413
182413
192413
202413
212413
222413
232413
242313
252312
262312
272312
282312
292312
302212

How September really feels in Agen

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.

Agen weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 6110.80.59.12.2
Feb11° / 478.90.410.22.9
Mar15° / 5410.20.111.64.6
Apr18° / 7611.8013.25.4
May21° / 11°7812.4014.56.1
Jun25° / 15°659.7015.36.8
Jul28° / 17°527.70156.6
Aug28° / 16°618.1013.86.5
Sep25° / 14°588.6012.37.1
Oct20° / 10°6110.2010.86.2
Nov14° / 7011.109.43.8
Dec11° / 6511.20.28.72.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25842
35842
45842
55842
65743
75743
85743
95644
105644
115545
125545
135545
145446
155446
165347
175347
185347
195248
205248
215248
225248
235050
245050
255050
264852
274852
284852
294753
304654

Chance of precipitation in September

Any precipitation

Agen gets around 58 mm of rain over 8.6 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 30% and peaks near 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
124
224
324
425
525
625
726
826
927
1027
1128
1228
1329
1429
1530
1630
1731
1831
1931
2031
2132
2232
2333
2433
2534
2634
2734
2835
2935
3035

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.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14328236
24528225
34629215
44829204
54929194
65029183
75129173
85229163
95329162
105330152
115430142
125331142
135331142
145531131
155531131
165630131
175630131
185730121
195730121
206029110
216029110
226128110
236128110
246227110
256326110
266326110
276425110
286524110
296623110
306623110

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over September. Sunrise moves from 6:25 AM to 7:00 AM, and sunset from 7:29 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:257:29
213.06:267:28
313.06:277:26
412.96:297:24
512.96:307:22
612.86:317:20
712.86:327:18
812.76:337:16
912.76:347:14
1012.66:367:12
1112.66:377:11
1212.56:387:09
1312.56:397:07
1412.46:407:05
1512.46:427:03
1612.36:437:01
1712.26:446:59
1812.26:456:57
1912.16:466:55
2012.16:486:53
2112.06:496:51
2212.06:506:49
2311.96:516:47
2411.96:526:45
2511.86:546:43
2611.86:556:42
2711.76:566:40
2811.76:576:38
2911.66:596:36
3011.67:006:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.3 kWh/m².

For context, solar energy here swings from a low near 1.29 kWh/m² to a high of 6.16 kWh/m² in June across the year — September's 4.3 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.8Bright
54.8Bright
64.8Bright
74.7Bright
84.7Bright
94.6Bright
104.6Bright
114.5Bright
124.4Bright
134.4Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.0Bright
214.0Moderate
223.9Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Is September a good time to visit Agen?

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

7.1
Sightseeing
1st-best month of the year
6.2
Beach & pool
4th-best month of the year

September is one of the better times to visit Agen for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Agen in September

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

In September, Agen sees daytime highs around 25°C and nights near 14°C. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Agen 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 Agen peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr6High
May6High
Jun7Very high
Jul9Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Agen in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Agen is worst in March — around 15 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 1915 µg/m³Aug 1810 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar15Moderate
Apr14Moderate
May12Good
Jun12Good
Jul10Good
Aug10Good
Sep10Good
Oct10Good
Nov10Good
Dec12Good
Location & terrain

Where is Agen?

Agen sits at 44.2°N, 0.6°E, 57 m above sea level, in France. The nearest listed city is Villeneuve-sur-Lot, 24 km away.

Topography around Agen

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

Within 3 km, the terrain around Agen has only modest variations in elevation — a maximum elevation change of 155 m around an average of 71 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 225 m; within 80 km, significant variations in elevation — a maximum elevation change of 387 m.

The land around Agen is covered by artificial surfaces (37%) and trees (35%) within 3 km, cropland (41%), trees (30%) and grassland (24%) within 16 km, and trees (37%), cropland (37%) and grassland (24%) within 80 km.

3 km
155 m
16 km
225 m
80 km
387 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Villeneuve-sur-Lot 24 km · Marmande 49 km · Auch 62 km · Montauban 62 km · Cahors 70 km · Bergerac 73 km · Colomiers 87 km · Blagnac 88 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 Agen (44.202°, 0.6206°, elevation 57 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).