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Solar data for Portugal

Across the 174 places in Portugal the best fixed tilt for solar panels runs from 26° in Funchal to 34° in Porto, and flat ground gets 4.2 to 5.1 peak sun hours a day. Every number is computed for each place.

Solar power in Portugal at a glance

Averages over 174 places with climate data, for a fixed array facing south.

Best panel angle33°average, facing south
Peak sun hours4.65a day on flat ground
1 kWp makes1,604kWh a year at the best angle
Off-grid angle64°average, for the darkest month
LisbonFaro (most sun)
  • 4.21–4.39
  • 4.39–4.57
  • 4.57–4.74
  • 4.74–4.92
  • 4.92–5.10

Peak sun hours a day on flat ground. Each dot is one place. 1 far-off place lies outside the frame.

The sunniest places in Portugal, with 5.10 peak sun hours a day on flat ground, are Faro and one other place; the least sunny is Monção with 4.21. A 1 kWp array at its best angle makes from 1,435 kWh a year in Ponta Delgada to 1,728 kWh in Faro — 1,604 kWh on average.

The best year-round tilt runs from 26° in Funchal to 34° in Porto. Off-grid systems are sized for the darkest month and do better steeper, at 64° on average: at 70° that month brings 2.42 kWh per kWp a day in Ponta Delgada and 3.32 kWh in Castelo Branco.

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

Sunniest places in Portugal

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
1FaroFaro5.101,72831°
1OlhãoFaro5.101,72831°
3AlbufeiraFaro5.091,72731°
3QuarteiraFaro5.091,72731°
3QuelfesFaro5.091,72632°
3LaranjeiroFaro5.091,72632°
7PortimãoFaro5.081,72531°
7LouléFaro5.081,72531°
7TaviraFaro5.081,72332°
10LagosFaro5.071,71931°

Least sunny places in Portugal

RankPlaceRegionSun hours/daykWh per kWp a yearBest tilt
169Viana do CasteloViana do Castelo4.341,52234°
171Ponta DelgadaAzores4.331,43530°
172Ponte de LimaViana do Castelo4.311,51434°
173Arcos de ValdevezViana do Castelo4.291,50534°
174MonçãoViana do Castelo4.211,47834°

Solar by region in Portugal

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
Faro115.091,72531°3.16 kWhFaro
Madeira55.011,62426°2.73 kWhCâmara de Lobos
Beja14.961,69032°3.21 kWhBeja
Évora14.881,66932°3.24 kWhÉvora
Portalegre14.831,66533°3.30 kWhPortalegre
Setúbal184.801,64232°3.23 kWhSetúbal
Lisbon524.761,62932°3.23 kWhBelém
Castelo Branco24.691,62834°3.31 kWhCastelo Branco
Santarém54.661,60333°3.23 kWhSantarém
Leiria64.611,58933°3.15 kWhCaldas da Rainha
Guarda34.581,59634°3.16 kWhSequeira
Coimbra84.561,58533°3.17 kWhCondeixa-a-Nova
Viseu14.541,58534°3.15 kWhViseu
Aveiro84.481,56634°3.06 kWhÍlhavo
Porto374.431,55334°2.97 kWhBaião
Bragança14.411,55134°2.82 kWhBragança
Braga74.391,54234°2.88 kWhGuimarães
Vila Real24.391,53934°2.83 kWhVila Real
Azores14.331,43530°2.42 kWhPonta Delgada
Viana do Castelo44.291,50534°2.75 kWhViana do Castelo

Largest places in Portugal at a glance

PlaceLatitudeBest tiltOff-grid tiltSun hours/day (flat)
Lisbon38.7° N32°63°4.77
Porto41.1° N34°65°4.44
Braga41.6° N34°66°4.38
Amadora38.8° N32°63°4.76
Coimbra40.2° N33°65°4.56
Leiria39.7° N33°64°4.60
Setúbal38.5° N32°63°4.84
Funchal32.7° N26°56°5.00
Viseu40.7° N34°65°4.54
Queluz38.8° N32°63°4.76
Cacém38.8° N32°63°4.76
Aveiro40.6° N34°65°4.50
Vila Nova de Gaia41.1° N34°65°4.44
Faro37.0° N31°62°5.10
Algueirão38.8° N32°63°4.75
Loures38.8° N32°63°4.75
Felgueiras41.4° N34°66°4.42
Rio de Mouro38.8° N32°63°4.75
Odivelas38.8° N32°63°4.76
Évora38.6° N32°64°4.88

Daylight and clock time in Portugal

In Monção (42.1° N), the northernmost place, the longest day of the year lasts 15 h 15 min and the shortest 9 h 06 min; in São Martinho (32.6° N), the southernmost, 14 h 18 min and 10 h 00 min. The clocks change twice a year: forward on Sun 29 Mar, back on Sun 25 Oct (Europe/Lisbon).

Time zonePlacesUTC offsetClocks change in 2026
Europe/Lisbon168UTC, in summer UTC+1Forward on Sun 29 Mar, back on Sun 25 Oct
Atlantic/Madeira5UTC, in summer UTC+1Forward on Sun 29 Mar, back on Sun 25 Oct
Atlantic/Azores1UTC−1, in summer UTCForward on Sun 29 Mar, back on Sun 25 Oct

Questions about solar in Portugal

What is the best angle for solar panels in Portugal?
Facing south, between 26° and 34° depending on the place — 33° on average over 174 places. Off-grid systems that must get through the darkest month do better steeper, at about 64° on average.
How many peak sun hours does Portugal get?
From 4.2 hours a day in Monção to 5.1 in Faro on flat ground, averaged over the year; 4.7 on average.
How much electricity does 1 kWp of solar panels produce in Portugal?
About 1,604 kWh a year at the best fixed angle on average, from 1,435 kWh in Ponta Delgada to 1,728 kWh in Faro. These are long-term climate averages; a single year can be several per cent higher or lower.
Where is the sunniest place in Portugal?
Faro (Faro) and 1 other place share the most sun of the 174 places: 5.10 peak sun hours a day on flat ground. 1 kWp in Faro makes about 1,728 kWh a year.
Does Portugal use daylight saving time?
The clocks change twice a year: forward on Sun 29 Mar, back on Sun 25 Oct (Europe/Lisbon).
How long is the longest day in Portugal?
15 h 15 min in Monção; the shortest day lasts 9 h 06 min in Monção.

All places in Portugal

Beja

Bragança

Portalegre

Viseu

Évora