Bella Vista weather in September

In September, Bella Vista sees average daytime highs of 24°C and overnight lows near 12°C, with 72 mm of rain across 8.4 wet days and about 11.8 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 59% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 24 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Bella Vista's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Bella Vista's year-round climate.

Daytime high
24°
7th warmest
Overnight low
12°
5th coldest
Rainfall
72 mm
8.4 wet days
Daylight
11 h 48 min
7:20 AM – 7:11 PM
Cloud cover
38%
3rd clearest
Wind
6 km/h
2nd windiest
Solar energy
5.23 kWh/m²
Travel score
7.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 25°C by the end.

A typical September day in Bella Vista reaches about 24°C in the afternoon and slips back to 12°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 31°C. Set against its neighbours, September runs about 3°C warmer than August and about 2°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12311
22311
32311
42311
52311
62311
72311
82311
92311
102311
112411
122412
132412
142412
152412
162412
172412
182412
192412
202412
212412
222412
232513
242513
252513
262513
272513
282513
292513
302514

Bella Vista weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°32119.213.54.4
Feb27° / 19°25317.8135.0
Mar26° / 18°25419.712.25.2
Apr23° / 15°17215.211.46.0
May20° / 11°11413.210.75.9
Jun18° / 639.210.36.0
Jul18° / 417.210.56.6
Aug21° / 406.3117.6
Sep24° / 12°728.411.87.5
Oct26° / 15°15314.112.66.2
Nov28° / 18°19515.813.35.5
Dec29° / 19°25518.213.74.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17228
27228
37228
47030
57030
67030
76931
86931
97030
106931
117030
127030
137030
147129
157129
167129
177129
187129
197129
207129
217030
227030
237030
246832
256832
266832
276634
286634
296634
306535

Chance of precipitation in September

Any precipitation

Bella Vista gets around 72 mm of rain over 8.4 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 37% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
123
223
324
424
525
625
725
825
925
1025
1126
1226
1326
1426
1526
1627
1727
1828
1928
2029
2129
2230
2331
2432
2533
2634
2735
2836
2936
3037

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1871120
2871120
3871120
4871120
5871120
6871120
7881020
8881020
9881020
10881020
11881020
12881020
13881020
14881020
15861130
16861130
17861130
18851230
19831340
20831340
21811450
22801550
23791650
24771760
25751960
26741970
27732070
28702181
29702181
30692191

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 24 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over September. Sunrise moves from 7:38 AM to 7:04 AM, and sunset from 7:04 PM to 7:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:387:04
211.57:377:05
311.57:367:05
411.57:347:05
511.57:337:06
611.67:327:06
711.67:317:07
811.67:307:07
911.77:297:08
1011.77:277:08
1111.77:267:09
1211.77:257:09
1311.87:247:09
1411.87:237:10
1511.87:217:10
1611.87:207:11
1711.97:197:11
1811.97:187:12
1911.97:177:12
2012.07:157:13
2112.07:147:13
2212.07:137:14
2312.07:127:14
2412.17:117:14
2512.17:107:15
2612.17:087:15
2712.17:077:16
2812.27:067:16
2912.27:057:17
3012.27:047:17

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.23 kWh/m².

For context, solar energy here swings from a low near 2.96 kWh/m² to a high of 6.11 kWh/m² in December across the year — September's 5.23 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.1Bright
105.1Bright
115.1Bright
125.2Bright
135.2Bright
145.2Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Bella Vista

In seasonPeak

None of Bella Vista's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Bella Vista's rainy season runs October–April, when most of the year's rain falls.

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

Is September a good time to visit Bella Vista?

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

7.5
Sightseeing
2nd-best month of the year
6.2
Beach & pool
1st-best month of the year

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

What to pack for Bella Vista in September

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

In September, Bella Vista sees daytime highs around 24°C and nights near 12°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Bella Vista in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bella Vista peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 19UV 14Jun 23UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr7Very high
May5High
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct12Extreme
Nov12Extreme
Dec13Extreme

Air quality in Bella Vista 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 Bella Vista is worst in August — around 37 µg/m³ PM2.5 (poor), about 3.8× the cleanest month (May, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateGoodAug 2437 µg/m³May 1010 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb12Moderate
Mar11Good
Apr10Good
May10Good
Jun12Good
Jul22Moderate
Aug37Poor
Sep36Poor
Oct22Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Bella Vista?

Bella Vista sits at 27.0°S, 65.3°W, 366 m above sea level, in Argentina. The nearest listed city is Famaillá, 10 km away.

Topography around Bella Vista

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

Within 3 km, the terrain around Bella Vista has only modest variations in elevation — a maximum elevation change of 19 m around an average of 359 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 538 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,157 m.

The land around Bella Vista is covered by cropland (70%) within 3 km, cropland (69%) and trees (20%) within 16 km, and trees (38%) and cropland (37%) within 80 km.

3 km
19 m
16 km
538 m
80 km
5,157 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Famaillá 10 km · Monteros 25 km · Yerba Buena 25 km · San Miguel de Tucuman 26 km · Alderetes 29 km · Tafí Viejo 34 km · Aguilares 54 km · Termas de Río Hondo 67 km

Argentina travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / I
220 V · 50 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$14,898
2025
Happiness
6.4 / 10
World Happiness, 2025
Homicide rate
4.5
per 100k, 2023
Road deaths
14.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 575
Religion
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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 Bella Vista (-27.0342°, -65.302°, elevation 366 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).