Formosa weather in October

In October, Formosa sees average daytime highs of 29°C and overnight lows near 18°C, with 184 mm of rain across 11.5 wet days and about 12.6 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 29°C by the end. The sky is clear or mostly clear about 41% of the time in October, and the air most often feels muggy.

Daylight stretches from about 12 h 12 min at the start of October to 13 hours by month's end. Set against the rest of the year, October is Formosa's 9th-clearest and 3rd-windiest month. For the whole year in context, see Formosa's year-round climate.

Daytime high
29°
6th warmest
Overnight low
18°
6th coldest
Rainfall
184 mm
11.5 wet days
Daylight
12 h 36 min
6:19 AM – 6:57 PM
Cloud cover
52%
9th clearest
Wind
14 km/h
3rd windiest
Solar energy
5.58 kWh/m²
Travel score
5.7
out of 10

Formosa is city in Argentina.

Density
2,963/km²
people per km²
Founded
1879

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 28°C in the first days to 29°C by the end.

A typical October day in Formosa reaches about 29°C in the afternoon and slips back to 18°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 35°C. Set against its neighbours, October runs about 2°C warmer than September and about 2°C cooler than November.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12717
22717
32817
42817
52817
62818
72818
82818
92818
102818
112818
122818
132818
142918
152918
162919
172919
182919
192919
202919
212919
222919
232919
242919
252919
262919
272919
282919
292919
302919
312919

How October really feels in Formosa

Once humidity and wind are folded in, October 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

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Formosa weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 23°11911.113.53.5
Feb32° / 23°13711.512.93.8
Mar31° / 21°12810.912.24.7
Apr28° / 18°1539.511.46.3
May24° / 15°1288.410.77.2
Jun22° / 14°998.410.47.0
Jul22° / 12°787.510.57.3
Aug24° / 14°646.611.17.8
Sep26° / 16°1118.611.87.1
Oct29° / 18°18411.512.65.7
Nov30° / 20°18210.613.35.0
Dec32° / 22°16211.413.64.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55545
65545
75545
85446
95446
105446
115446
125347
135347
145446
155347
165347
175347
185347
195347
205347
215347
225446
235545
245545
255545
265545
275545
285545
295545
305545
315545

Chance of precipitation in October

Any precipitation

Formosa gets around 184 mm of rain over 11.5 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
236
336
436
536
637
737
837
937
1037
1137
1237
1338
1438
1538
1638
1738
1838
1938
2038
2138
2238
2338
2438
2538
2638
2738
2838
2937
3037
3137

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the muggy band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1262125244
2252125254
3242125265
4222025275
5212024286
6202024297
7192024307
8182024318
9172023318
10162023329
111520233210
121520243210
131419243211
141319243311
151219243311
161118253412
171118253412
181018253413
191017263413
20917263513
21917263414
22916263414
23916263414
24916263415
25916253415
26916253416
27916253316
28917243317
29917243317
30917233218
311017233219

Wind in October

Winds average 14 km/h in October.

Across October, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 12 min at the start of October to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over October. Sunrise moves from 6:34 AM to 6:07 AM, and sunset from 6:49 PM to 7:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:346:49
212.36:336:49
312.36:326:50
412.36:316:50
512.36:306:51
612.46:296:51
712.46:286:52
812.46:276:52
912.56:266:53
1012.56:256:53
1112.56:246:54
1212.56:236:54
1312.66:226:55
1412.66:216:56
1512.66:206:56
1612.66:196:57
1712.76:186:57
1812.76:176:58
1912.76:166:58
2012.76:156:59
2112.86:146:59
2212.86:137:00
2312.86:137:01
2412.86:127:01
2512.86:117:02
2612.96:107:03
2712.96:107:03
2812.96:097:04
2912.96:087:04
3013.06:077:05
3113.06:077:06

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.58 kWh/m².

For context, solar energy here swings from a low near 2.67 kWh/m² to a high of 6.75 kWh/m² in December across the year — October's 5.58 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.2Bright
35.2Bright
45.2Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.6Bright
185.6Bright
195.6Bright
205.7Bright
215.7Bright
225.7Bright
235.8Bright
245.8Bright
255.8Bright
265.9Bright
275.9Bright
285.9Bright
296.0Bright
306.0Bright
316.0Intense
Planning a trip in October

Is October a good time to visit Formosa?

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

5.7
Sightseeing
7th-best month of the year
6.8
Beach & pool
4th-best month of the year

October is a reasonable time to visit Formosa for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Formosa in October

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

In October, Formosa sees daytime highs around 29°C and nights near 18°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Formosa in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Formosa peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateVery highExtremeJan 18UV 14Jun 21UV 4
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar11Extreme
Apr8Very high
May6High
Jun4Moderate
Jul5Moderate
Aug5Moderate
Sep8Very high
Oct7Very high
Nov12Extreme
Dec13Extreme

Air quality in Formosa in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Formosa is worst in September — around 23 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (May, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodSep 1222 µg/m³May 198 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun9Good
Jul12Good
Aug21Moderate
Sep23Moderate
Oct15Moderate
Nov10Good
Dec9Good
Location & terrain

Where is Formosa?

Formosa sits at 26.2°S, 58.2°W, 67 m above sea level, in Argentina. The nearest listed city is Pilar, 76 km away.

Topography around Formosa

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

Within 3 km, the terrain around Formosa has only modest variations in elevation — a maximum elevation change of 17 m around an average of 58 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 23 m; within 80 km, only modest variations in elevation — a maximum elevation change of 182 m.

The land around Formosa is covered by artificial surfaces (50%) and trees (29%) within 3 km, trees (44%) and grassland (39%) within 16 km, and grassland (49%) and trees (36%) within 80 km.

3 km
17 m
16 km
23 m
80 km
182 m
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Pilar 76 km · San Antonio 106 km · Pirané 106 km · Villa Elisa 108 km · Nemby 109 km · Lambaré 109 km · Itá 111 km · Asuncion 113 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 Formosa (-26.1849°, -58.1731°, elevation 67 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).