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Solar data for Argentina

Across the 314 places in Argentina the best fixed tilt for solar panels runs from 21° in Tartagal to 44° in Río Gallegos, and flat ground gets 2.6 to 6.1 peak sun hours a day. Every number is computed for each place.

Solar power in Argentina at a glance

Averages over 314 places with climate data, for a fixed array facing north.

Best panel angle29°average, facing north
Peak sun hours4.91a day on flat ground
1 kWp makes1,639kWh a year at the best angle
Off-grid angle55°average, for the darkest month
Buenos AiresBelén (most sun)
  • 2.59–3.30
  • 3.30–4.00
  • 4.00–4.70
  • 4.70–5.41
  • 5.41–6.11

Peak sun hours a day on flat ground. Each dot is one place.

The sunniest place in Argentina is Belén (Catamarca) with 6.11 peak sun hours a day on flat ground; the least sunny is Ushuaia with 2.59. A 1 kWp array at its best angle makes from 1,007 kWh a year in Ushuaia to 2,060 kWh in Belén — 1,639 kWh on average.

The best year-round tilt runs from 21° in Tartagal to 44° in Río Gallegos. Off-grid systems are sized for the darkest month and do better steeper, at 55° on average: at 70° that month brings 1.16 kWh per kWp a day in Ushuaia and 3.40 kWh in Malargüe.

Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.

Sunniest places in Argentina

Ranked by peak sun hours on flat ground: the yearly average of a day's sunshine energy (NASA POWER climatology). Output: 1 kWp at its best year-round angle.

RankPlaceRegionSun hours/daykWh per kWp a yearBest tilt
1BelénCatamarca6.112,06028°
2AimogastaLa Rioja5.951,98228°
3ChilecitoLa Rioja5.901,99029°
4CafayateSalta5.871,98327°
5Villa Paula de SarmientoSan Juan5.841,96330°
5ChimbasSan Juan5.841,96230°
5AlbardónSan Juan5.841,96230°
5Villa General San MartínSan Juan5.841,96130°
9Santa MaríaCatamarca5.821,96827°
9San JuanSan Juan5.821,95830°

Least sunny places in Argentina

RankPlaceRegionSun hours/daykWh per kWp a yearBest tilt
310Puerto DeseadoSanta Cruz4.111,55840°
311Río GallegosSanta Cruz3.371,34144°
312El CalafateSanta Cruz3.351,32343°
313Río GrandeTierra del Fuego3.161,26844°
314UshuaiaTierra del Fuego2.591,00743°

Solar by region in Argentina

Averages of the places in each region, sunniest first. Darkest month: what 1 kWp of off-grid panels at 70° makes a day in the worst month of the year.

RegionPlacesSun hours/daykWh per kWp a yearBest tiltDarkest month at 70°Sunniest place
La Rioja35.821,94428°2.51 kWhAimogasta
San Juan95.821,95630°2.78 kWhVilla Paula de Sarmiento
Catamarca45.661,88928°2.34 kWhBelén
Mendoza105.431,85330°3.05 kWhSan Martín
Jujuy45.311,72125°1.98 kWhSan Salvador de Jujuy
San Luis25.231,76630°2.90 kWhSan Luis
Salta165.111,63424°1.95 kWhCafayate
Tucuman75.051,65227°2.10 kWhTafí Viejo
Neuquen65.041,76433°3.15 kWhCutral-Có
Cordoba275.041,67729°2.63 kWhVilla Dolores
Chaco134.961,56524°2.20 kWhVilla Ángela
Santiago del Estero34.961,58426°2.21 kWhAñatuya
La Pampa44.951,68732°3.20 kWhGeneral Pico
Formosa24.921,53623°2.15 kWhPirané
Santa Fe284.921,61828°2.63 kWhSunchales
Rio Negro114.901,71433°3.09 kWhCatriel
Corrientes134.891,56625°2.33 kWhGoya
Entre Rios154.871,60128°2.62 kWhParaná
Misiones164.811,52824°2.18 kWhPuerto Iguazú
Buenos Aires F.D.14.781,59630°2.95 kWhBuenos Aires
Buenos Aires1074.771,60931°3.00 kWhGeneral Villegas
Chubut54.491,63537°2.76 kWhPuerto Madryn
Santa Cruz63.941,51141°2.47 kWhLas Heras
Tierra del Fuego22.871,13844°1.42 kWhRío Grande

Largest places in Argentina at a glance

PlaceLatitudeBest tiltOff-grid tiltSun hours/day (flat)
Buenos Aires34.6° S30°58°4.78
Córdoba31.4° S29°51°5.05
Rosario32.9° S29°59°4.87
Mar del Plata38.0° S32°62°4.56
San Miguel de Tucumán26.8° S26°37°5.07
Salta24.8° S26°27°5.42
Santa Fe31.6° S28°56°4.93
Avellaneda34.7° S30°58°4.78
Corrientes27.5° S24°52°4.93
Posadas27.4° S24°52°4.82
Bahía Blanca38.7° S33°64°4.80
Resistencia27.5° S24°52°4.94
Merlo34.7° S30°58°4.80
Quilmes34.7° S30°58°4.77
San Salvador de Jujuy24.2° S25°27°5.53
Santiago del Estero27.8° S25°48°4.97
Paraná31.7° S28°56°4.92
Neuquén39.0° S33°64°5.12
José C. Paz34.5° S30°59°4.82
Formosa26.2° S23°51°4.90

Daylight and clock time in Argentina

In Profesor Salvador Mazza (22.0° S), the northernmost place, the longest day of the year lasts 13 h 29 min and the shortest 10 h 47 min; in Ushuaia (54.8° S), the southernmost, 17 h 20 min and 7 h 12 min. Argentina does not use daylight saving time: the clocks stay the same all year.

Time zonePlacesUTC offsetClocks change in 2026
America/Argentina/Cordoba116UTC−3no daylight saving time
America/Argentina/Buenos_Aires109UTC−3no daylight saving time
America/Argentina/Salta37UTC−3no daylight saving time
America/Argentina/Mendoza10UTC−3no daylight saving time
America/Argentina/Catamarca9UTC−3no daylight saving time
America/Argentina/San_Juan9UTC−3no daylight saving time
America/Argentina/Tucuman7UTC−3no daylight saving time
America/Argentina/Rio_Gallegos6UTC−3no daylight saving time
America/Argentina/Jujuy4UTC−3no daylight saving time
America/Argentina/La_Rioja3UTC−3no daylight saving time
America/Argentina/San_Luis2UTC−3no daylight saving time
America/Argentina/Ushuaia2UTC−3no daylight saving time

Questions about solar in Argentina

What is the best angle for solar panels in Argentina?
Facing north, between 21° and 44° depending on the place — 29° on average over 314 places. Off-grid systems that must get through the darkest month do better steeper, at about 55° on average.
How many peak sun hours does Argentina get?
From 2.6 hours a day in Ushuaia to 6.1 in Belén on flat ground, averaged over the year; 4.9 on average.
How much electricity does 1 kWp of solar panels produce in Argentina?
About 1,639 kWh a year at the best fixed angle on average, from 1,007 kWh in Ushuaia to 2,060 kWh in Belén. These are long-term climate averages; a single year can be several per cent higher or lower.
Where is the sunniest place in Argentina?
Belén (Catamarca) gets the most sun of the 314 places: 6.11 peak sun hours a day on flat ground, so 1 kWp there makes about 2,060 kWh a year.
Does Argentina use daylight saving time?
Argentina does not use daylight saving time: the clocks stay the same all year.
How long is the longest day in Argentina?
17 h 20 min in Ushuaia; the shortest day lasts 7 h 12 min in Ushuaia.

All places in Argentina

Buenos Aires F.D.

Tierra del Fuego