Climate and average weather in Federal

In Federal, the summers are humid, hot, showery, and mostly clear and the winters are mild and mostly clear.

Best: mid March to early December

Over the course of the year, the temperature in Federal typically varies from 8°C to 31°C, and is rarely below 1°C or above 36°C. January is the hottest month of the year, while July is the coldest.

Based on the travel score, the best time of year to visit Federal for warm-weather activities is from mid March to early December.

Hottest
Jan
31°
Coldest
Jul
Wettest
Apr
153 mm
Driest
Jul
61 mm
Rain / yr
1300 mm
95 wet days
Daylight
10.0–14.0 h
shortest–longest
Elevation
71 m
31.0°S
Clearest
Aug
44% cloud

Federal is human settlement in Argentina.

Founded
1880

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

Federal weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid March to early December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Federal, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.9 months, from November 20 to March 19, with daily high temperatures above 28°C. The hottest month of the year in Federal is January, with an average high of 31°C and low of 20°C.

The cool season lasts 2.9 months, from May 20 to August 15, with daily high temperatures below 20°C. The coldest month of the year in Federal is July, with an average low of 8°C and high of 18°C.

Days typically run about 11°C warmer than nights year-round.

10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3120
Feb3019
Mar2818
Apr2514
May2111
Jun189
Jul188
Aug209
Sep2211
Oct2514
Nov2716
Dec3018

Average hourly temperature in Federal

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on January afternoons, near 31°C, and coldest before dawn in July, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Federal weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 20°119913.84.7
Feb30° / 19°1169.213.15.2
Mar28° / 18°120912.26.3
Apr25° / 14°1538.611.37.2
May21° / 11°967.210.56.9
Jun18° / 787.1106.4
Jul18° / 615.910.26.5
Aug20° / 806.510.97.1
Sep22° / 11°917.111.87.3
Oct25° / 14°1419.312.87.1
Nov27° / 16°1237.713.66.8
Dec30° / 18°1238.4145.4

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Federal gets about 1300 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.

The wetter season lasts 4.7 months, from around Dec 11 to May 2, peaking in February at about 34% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 24.

April is the wettest month by volume, with 153 mm over about 9 wet days; July is the driest, with 61 mm.

0%10%20%30%40%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetFeb 5 · 34%Jul 24 · 18%
Rain on a day (%)Rain days
Jan299
Feb339
Mar309
Apr289
May237
Jun237
Jul196
Aug217
Sep247
Oct299
Nov268
Dec278

Monthly rainfall

Over a full year, Federal collects about 1300 mm of rain across 95 wet days — roughly 108 mm in an average month.

It doesn’t fall evenly. April is the wettest month with 153 mm, while July is the driest at just 61 mm. The three wettest months alone bring about 32% of the year’s total.

0255075100125150175200JanFebMarAprMayJunJulAugSepOctNovDec1191161201539678618091141123123
Rainfall (mm)Rain days
Jan1199
Feb1169
Mar1209
Apr1539
May967
Jun787
Jul616
Aug807
Sep917
Oct1419
Nov1238
Dec1238

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Federal, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.

The clearer part of the year begins around October 31 and lasts for 5.7 months, ending around April 21. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 65% of the time on average.

The cloudier part of the year begins around April 22 and lasts for 3.0 months, ending around July 20. The cloudiest month is May, when it is overcast or mostly cloudy 51% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJan 20 · 67%May 18 · 47%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan6535
Feb6139
Mar6238
Apr5842
May4951
Jun4951
Jul5545
Aug6040
Sep5743
Oct5446
Nov6040
Dec6040

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 14 hours of light; the shortest, around June 10, only 10 hours — a swing of roughly 4 hours.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan13.86:107:59
Feb13.16:367:43
Mar12.26:587:12
Apr11.37:186:33
May10.57:386:04
Jun10.07:555:55
Jul10.27:566:06
Aug10.97:336:25
Sep11.86:556:44
Oct12.86:177:03
Nov13.65:527:28
Dec14.05:517:51

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Federal averages about 14 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 10 and 16 days.

The sunnier stretch runs 5.8 months, from around Oct 29 to Apr 23. The sunniest month is January, with roughly 15 sunny days (bright).

The greyest month is May, down near 11 sunny days — about 26% fewer than the January peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightJan 1816 daysMay 2010 days
Sunny daysSky
Jan15Bright
Feb13Mixed
Mar14Mixed
Apr14Mixed
May11Mixed
Jun11Mixed
Jul13Mixed
Aug15Mixed
Sep14Mixed
Oct13Mixed
Nov14Mixed
Dec15Mixed

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Federal, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 5.4 months, from around November 3 to April 16. The muggiest month is February, when the air feels humid, muggy or worse about 78% of the time.

The most comfortable stretch runs from around April 17 to November 2, and July is the most comfortable month — the air is dry or comfortable 91% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 21 · 92%Feb 2 · 21%oppressivemuggyhumiddrycomfortablehumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan8152530201
Feb6162532202
Mar14192926121
Apr3524201650
May591815710
Jun711411300
Jul77138100
Aug741510100
Sep671812300
Oct452420910
Nov3028251520
Dec16222724101

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Across the year, average wind speed in Federal is typically light breeze, near 13 km/h, and varies little with the seasons.

The windier part of the year lasts 5.0 months, from around Jul 3 to Dec 1. The windiest month is September, averaging about 15 km/h (light breeze).

The calmer part of the year runs from around Dec 2 to Jul 2, with February the calmest month at about 12 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeSep 5 · 15 km/hFeb 26 · 12 km/h
Wind speed (km/h)Feels
Jan12calm
Feb12calm
Mar12calm
Apr12calm
May12calm
Jun13light breeze
Jul13light breeze
Aug14light breeze
Sep15light breeze
Oct14light breeze
Nov13light breeze
Dec12light breeze

Best time to visit Federal

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Federal throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around late November, Federal is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Federal for general outdoor tourist activities is from mid March to early December, with a peak score in the third week of September.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationSep 21 · 7.4

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan4.8fair
Feb5.2fair
Mar6.3good
Apr7.2good
May6.9good
Jun6.4good
Jul6.5good
Aug7.1good
Sep7.3good
Oct7.1good
Nov6.8good
Dec5.4fair

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Federal for hot-weather activities is from mid October to late April, with a peak score in the first week of December.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationDec 6 · 7.5

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Federal, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

For a warm-season trip around January (highs near 31°C), the essentials are light clothes, rain gear and sun protection. In the cold season around July (highs near 18°C), pack a warm layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, Federal sees daytime highs around 31°C and nights near 20°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

UV index (midday) in Federal by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Federal peaks around January 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 20UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar11Extreme
Apr7High
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5High
Sep7High
Oct7Very high
Nov11Extreme
Dec12Extreme

Average hourly UV index in Federal

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in January the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan97
Feb8.56.5
Mar7.55.5
Apr63
May40
Jun20
Jul30
Aug50
Sep6.53
Oct73.5
Nov8.56
Dec96.5
Almanac & agriculture

Growing season

Chance of a frost-free day

Federal is mild enough that a frost-free day stays more likely than not even in midwinter.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDec
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May990
Jun950
Jul920
Aug960
Sep990
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Federal banks about 3,366 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

01,0002,0003,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan482
Feb409
Mar397
Apr284
May187
Jun106
Jul87
Aug145
Sep196
Oct287
Nov350
Dec437

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Federal receives about 4.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.4 and 7.2 kWh/m².

The brighter stretch of the year lasts 6.1 months, from around Sep 20 to Mar 24. The brightest month is December, averaging about 7.1 kWh/m² (intense).

The dimmest month is June, down near 2.5 kWh/m² — roughly 65% less than the December peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 117.2 kWhJun 202.4 kWh
Solar energy (kWh/m²)Level
Jan7.0Intense
Feb6.2Intense
Mar5.2Bright
Apr3.8Moderate
May2.9Moderate
Jun2.5Moderate
Jul2.8Moderate
Aug3.7Moderate
Sep4.7Bright
Oct5.5Bright
Nov6.9Intense
Dec7.2Intense

Where is Federal?

Federal sits at 31.0°S, 58.8°W, 71 m above sea level, in Argentina. The nearest listed city is Chajarí, 79 km away.

Topography around Federal

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

Within 3 km, the terrain around Federal has only modest variations in elevation — a maximum elevation change of 17 m around an average of 64 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 30 m; within 80 km, only modest variations in elevation — a maximum elevation change of 82 m.

The land around Federal is covered by grassland (64%) within 3 km, grassland (78%) within 16 km, and grassland (53%), cropland (22%) and trees (20%) within 80 km.

3 km
17 m
16 km
30 m
80 km
82 m
treesshrubsgrasslandcroplandartificial surfaceswater
Nearby: Chajarí 79 km · La Paz 86 km · Concordia 87 km · Salto 92 km · Santa Elena 96 km · Villaguay 104 km · San Javier 118 km · Esquina 127 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 Federal (-30.9562°, -58.7797°, elevation 71 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).