31 places · sun position · panel angle
Solar data for Uruguay
Across the 31 places in Uruguay the best fixed tilt for solar panels runs from 26° in Artigas to 29° in Montevideo, and flat ground gets 4.6 to 4.9 peak sun hours a day. Every number is computed for each place.
Solar power in Uruguay at a glance
Averages over 31 places with climate data, for a fixed array facing north.
- 4.64–4.69
- 4.69–4.73
- 4.73–4.78
- 4.78–4.82
- 4.82–4.86
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest place in Uruguay is Artigas (Artigas) with 4.86 peak sun hours a day on flat ground; the least sunny is Rocha with 4.64. A 1 kWp array at its best angle makes from 1,547 kWh a year in Rocha to 1,606 kWh in Santa Lucía — 1,584 kWh on average.
The best year-round tilt runs from 26° in Artigas to 29° in Montevideo. Off-grid systems are sized for the darkest month and do better steeper, at 58° on average: at 70° that month brings 2.50 kWh per kWp a day in Artigas and 3.01 kWh in Montevideo.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in Uruguay
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.
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 1 | Artigas | Artigas | 4.86 | 1,578 | 26° |
| 2 | Salto | Salto Department | 4.85 | 1,587 | 27° |
| 3 | Santa Lucía | Canelones | 4.83 | 1,606 | 29° |
| 3 | Paysandú | Paysandú Department | 4.83 | 1,592 | 28° |
| 5 | Canelones | Canelones | 4.82 | 1,604 | 29° |
| 5 | San José de Mayo | San José Department | 4.82 | 1,603 | 29° |
| 5 | Fray Bentos | Río Negro Department | 4.82 | 1,597 | 29° |
| 8 | Florida | Florida | 4.81 | 1,599 | 29° |
| 8 | Dolores | Soriano | 4.81 | 1,597 | 29° |
| 8 | Mercedes | Soriano | 4.81 | 1,595 | 29° |
Least sunny places in Uruguay
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 27 | Treinta y Tres | Treinta y Tres Department | 4.73 | 1,566 | 28° |
| 28 | Melo | Cerro Largo | 4.71 | 1,551 | 28° |
| 29 | Maldonado | Maldonado | 4.70 | 1,567 | 29° |
| 29 | San Carlos | Maldonado | 4.70 | 1,566 | 29° |
| 31 | Rocha | Rocha Department | 4.64 | 1,547 | 29° |
Solar by region in Uruguay
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.
| Region | Places | Sun hours/day | kWh per kWp a year | Best tilt | Darkest month at 70° | Sunniest place |
|---|---|---|---|---|---|---|
| Artigas | 1 | 4.86 | 1,578 | 26° | 2.50 kWh | Artigas |
| Salto Department | 1 | 4.85 | 1,587 | 27° | 2.59 kWh | Salto |
| Paysandú Department | 1 | 4.83 | 1,592 | 28° | 2.66 kWh | Paysandú |
| Río Negro Department | 2 | 4.81 | 1,592 | 29° | 2.72 kWh | Fray Bentos |
| Soriano | 2 | 4.81 | 1,596 | 29° | 2.77 kWh | Dolores |
| Florida | 1 | 4.81 | 1,599 | 29° | 2.92 kWh | Florida |
| Colonia | 2 | 4.80 | 1,597 | 29° | 2.90 kWh | Carmelo |
| San José Department | 2 | 4.79 | 1,595 | 29° | 2.98 kWh | San José de Mayo |
| Flores Department | 1 | 4.79 | 1,589 | 29° | 2.82 kWh | Trinidad |
| Canelones | 8 | 4.78 | 1,592 | 29° | 2.99 kWh | Santa Lucía |
| Durazno Department | 1 | 4.78 | 1,586 | 29° | 2.81 kWh | Durazno |
| Tacuarembó Department | 1 | 4.77 | 1,564 | 27° | 2.63 kWh | Tacuarembó |
| Rivera Department | 1 | 4.77 | 1,552 | 27° | 2.53 kWh | Rivera |
| Lavalleja | 1 | 4.75 | 1,583 | 29° | 2.93 kWh | Minas |
| Montevideo Department | 1 | 4.74 | 1,578 | 29° | 3.01 kWh | Montevideo |
| Treinta y Tres Department | 1 | 4.73 | 1,566 | 28° | 2.83 kWh | Treinta y Tres |
| Cerro Largo | 1 | 4.71 | 1,551 | 28° | 2.72 kWh | Melo |
| Maldonado | 2 | 4.70 | 1,567 | 29° | 2.98 kWh | Maldonado |
| Rocha Department | 1 | 4.64 | 1,547 | 29° | 2.90 kWh | Rocha |
Largest places in Uruguay at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Montevideo | 34.9° S | 29° | 59° | 4.74 |
| Salto | 31.4° S | 27° | 57° | 4.85 |
| Maldonado | 34.9° S | 29° | 59° | 4.70 |
| Rivera | 30.9° S | 27° | 56° | 4.77 |
| Paysandú | 32.3° S | 28° | 58° | 4.83 |
| Las Piedras | 34.7° S | 29° | 58° | 4.77 |
| Tacuarembó | 31.7° S | 27° | 57° | 4.77 |
| Melo | 32.4° S | 28° | 57° | 4.71 |
| Artigas | 30.4° S | 26° | 56° | 4.86 |
| Mercedes | 33.3° S | 29° | 59° | 4.81 |
| Durazno | 33.4° S | 29° | 58° | 4.78 |
| Minas | 34.4° S | 29° | 59° | 4.75 |
| Florida | 34.1° S | 29° | 59° | 4.81 |
| San José de Mayo | 34.3° S | 29° | 59° | 4.82 |
| Colonia del Sacramento | 34.5° S | 29° | 59° | 4.79 |
| Barros Blancos | 34.8° S | 29° | 59° | 4.77 |
| San Carlos | 34.8° S | 29° | 59° | 4.70 |
| Rocha | 34.5° S | 29° | 59° | 4.64 |
| Fray Bentos | 33.1° S | 29° | 58° | 4.82 |
| Treinta y Tres | 33.2° S | 28° | 58° | 4.73 |
Daylight and clock time in Uruguay
In Artigas (30.4° S), the northernmost place, the longest day of the year lasts 14 h 07 min and the shortest 10 h 11 min; in Montevideo (34.9° S), the southernmost, 14 h 30 min and 9 h 48 min. Uruguay does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| America/Montevideo | 31 | UTC−3 | no daylight saving time |