Formosa weather in April

In April, Formosa sees average daytime highs of 28°C and overnight lows near 18°C, with 153 mm of rain across 9.5 wet days and about 11.4 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 26°C by the end. The sky is clear or mostly clear about 45% of the time in April, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of April to 11 hours by month's end. Set against the rest of the year, April is Formosa's 5th-clearest and 9th-windiest month. For the whole year in context, see Formosa's year-round climate.

Daytime high
28°
7th warmest
Overnight low
18°
7th coldest
Rainfall
153 mm
9.5 wet days
Daylight
11 h 24 min
7:11 AM – 6:34 PM
Cloud cover
49%
5th clearest
Wind
12 km/h
9th windiest
Solar energy
4.15 kWh/m²
Travel score
6.3
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 April

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 29°C in the first days to 26°C by the end.

A typical April day in Formosa reaches about 28°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 33°C. Set against its neighbours, April runs about 3°C cooler than March and about 4°C warmer than May.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12920
22920
32920
42920
52919
62919
72919
82919
92919
102819
112819
122819
132819
142819
152818
162818
172818
182718
192718
202718
212718
222718
232718
242718
252717
262617
272617
282617
292617
302617

How April really feels in Formosa

Once humidity and wind are folded in, April 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

April 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 April compares with the rest of the year at a glance. April is the 7th-warmest and 4th-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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 12% of April, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65743
75644
85644
95644
105644
115644
125644
135644
145644
155644
165644
175545
185545
195545
205545
215545
225545
235545
245545
255545
265545
275545
285545
295644
305644

Chance of precipitation in April

Any precipitation

Formosa gets around 153 mm of rain over 9.5 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
131
231
331
431
532
632
732
832
932
1032
1132
1232
1332
1432
1532
1633
1733
1833
1933
2033
2133
2232
2332
2431
2531
2630
2730
2829
2929
3029

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the muggy band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 54% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
15111834311
25111834301
36111834301
46121834301
57121833301
67121833291
78131832291
88131832281
99141731281
109151731271
1110151731261
1210161831251
1310161831241
1411171831231
1511171831231
1611171931221
1711181931210
1811181931200
1911181932200
2012182032190
2112182032180
2212182032170
2313182032160
2414182132160
2514182131150
2615182131140
2716182130140
2817182130130
2919182129130
3020182129120

Wind in April

Winds average 12 km/h in April.

Across April, 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.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 48 min at the start of April to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over April. Sunrise moves from 7:04 AM to 7:19 AM, and sunset from 6:50 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.87:046:50
211.77:056:49
311.77:056:48
411.77:066:47
511.77:066:46
611.67:076:45
711.67:076:44
811.67:086:43
911.67:086:42
1011.57:096:41
1111.57:096:40
1211.57:096:39
1311.57:106:37
1411.47:106:36
1511.47:116:35
1611.47:116:34
1711.47:126:33
1811.37:126:32
1911.37:136:31
2011.37:136:30
2111.37:146:29
2211.27:146:29
2311.27:156:28
2411.27:156:27
2511.27:166:26
2611.17:166:25
2711.17:176:24
2811.17:186:23
2911.17:186:22
3011.07:196:21

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.15 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 — April's 4.15 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.6Bright
54.5Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.2Bright
164.1Bright
174.1Bright
184.0Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.8Moderate
273.7Moderate
283.7Moderate
293.7Moderate
303.7Moderate
Planning a trip in April

Is April a good time to visit Formosa?

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

6.3
Sightseeing
6th-best month of the year
6.9
Beach & pool
1st-best month of the year

April 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 April

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

In April, Formosa sees daytime highs around 28°C and nights near 18°C. Pack light clothes. Worth having: rain gear. About 10 days see rain.

light clothesrain gear

UV index in Formosa in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 (very high — sun protection essential). 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 April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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
April 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).