45 places · sun position · panel angle
Solar data for the Dominican Republic
Across the 45 places in the Dominican Republic the best fixed tilt for solar panels runs from 18° in Santo Domingo to 19° in Santiago de los Caballeros, and flat ground gets 5.3 to 5.6 peak sun hours a day. Every number is computed for each place.
Solar power in the Dominican Republic at a glance
Averages over 45 places with climate data, for a fixed array facing south.
- 5.27–5.33
- 5.33–5.40
- 5.40–5.46
- 5.46–5.52
- 5.52–5.59
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest place in the Dominican Republic is Santa Cruz de Barahona (Barahona Province) with 5.59 peak sun hours a day on flat ground; the least sunny is Tamboril with 5.27. A 1 kWp array at its best angle makes from 1,599 kWh a year in Tamboril to 1,694 kWh in Santa Cruz de Barahona — 1,650 kWh on average.
The best year-round tilt runs from 18° in Santo Domingo to 19° in Santiago de los Caballeros. Off-grid systems are sized for the darkest month and do better steeper, at 22° on average: at 70° that month brings 1.66 kWh per kWp a day in Guayacanes and 1.78 kWh in San Fernando de Monte Cristi.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in the Dominican Republic
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 | Santa Cruz de Barahona | Barahona Province | 5.59 | 1,694 | 18° |
| 2 | Neiba | Baoruco Province | 5.56 | 1,692 | 19° |
| 2 | San Fernando de Monte Cristi | Monte Cristi Province | 5.56 | 1,690 | 19° |
| 4 | Punta Cana | La Altagracia Province | 5.54 | 1,665 | 18° |
| 5 | Baní | Peravia | 5.53 | 1,679 | 18° |
| 6 | Azua | Azua Province | 5.52 | 1,682 | 18° |
| 6 | Las Matas de Farfán | San Juan Province | 5.52 | 1,678 | 19° |
| 6 | Salvaleón de Higüey | La Altagracia Province | 5.52 | 1,662 | 18° |
| 6 | La Romana | La Romana | 5.52 | 1,662 | 18° |
| 10 | San Cristóbal | San Cristóbal | 5.51 | 1,671 | 18° |
Least sunny places in the Dominican Republic
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 40 | San Francisco de Macorís | Duarte Province | 5.32 | 1,614 | 18° |
| 42 | Santiago de los Caballeros | Santiago Province | 5.29 | 1,607 | 19° |
| 43 | Salcedo | Hermanas Mirabal | 5.29 | 1,604 | 18° |
| 43 | Moca | Espaillat Province | 5.28 | 1,602 | 18° |
| 45 | Tamboril | Santiago Province | 5.27 | 1,599 | 18° |
Solar by region in the Dominican Republic
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.
Largest places in the Dominican Republic at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Santo Domingo | 18.5° N | 18° | 19° | 5.49 |
| Santiago de los Caballeros | 19.5° N | 19° | 25° | 5.29 |
| Santo Domingo Oeste | 18.5° N | 18° | 19° | 5.49 |
| Santo Domingo Este | 18.5° N | 18° | 19° | 5.49 |
| San Pedro de Macorís | 18.5° N | 18° | 19° | 5.50 |
| La Romana | 18.4° N | 18° | 20° | 5.52 |
| San Cristóbal | 18.4° N | 18° | 19° | 5.51 |
| Puerto Plata | 19.8° N | 19° | 27° | 5.41 |
| San Francisco de Macorís | 19.3° N | 18° | 25° | 5.32 |
| Salvaleón de Higüey | 18.6° N | 18° | 22° | 5.52 |
| La Vega | 19.2° N | 18° | 24° | 5.32 |
| Punta Cana | 18.6° N | 18° | 23° | 5.54 |
| Santa Cruz de Barahona | 18.2° N | 18° | 20° | 5.59 |
| Bonao | 18.9° N | 18° | 22° | 5.39 |
| San Juan de la Maguana | 18.8° N | 19° | 20° | 5.49 |
| Bajos de Haina | 18.4° N | 18° | 19° | 5.51 |
| Baní | 18.3° N | 18° | 19° | 5.53 |
| Moca | 19.4° N | 18° | 25° | 5.28 |
| Azua | 18.5° N | 18° | 19° | 5.52 |
| Mao | 19.5° N | 19° | 24° | 5.37 |
Daylight and clock time in the Dominican Republic
In San Fernando de Monte Cristi (19.8° N), the northernmost place, the longest day of the year lasts 13 h 20 min and the shortest 10 h 56 min; in Santa Cruz de Barahona (18.2° N), the southernmost, 13 h 13 min and 11 h 02 min. The Dominican Republic does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| America/Santo_Domingo | 45 | UTC−4 | no daylight saving time |