Santiago Province · Dominican Republic · 19.49° N · 70.61° W
Solar position in Tamboril
Sun position, daylight and the best solar panel angle for Tamboril — computed for 19.49° N, 70.61° W, 266 m above sea level.
The sun right now
Sun in Tamboril today
Saturday, 24 October 2026 · local time UTC−4
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:26 | sun 18° below horizon |
| Nautical dawn | 05:51 | 12° below |
| Civil dawn | 06:17 | 6° below |
| Sunrise | 06:40 | 102° ESE |
| Golden hour ends | 07:09 | sun 6° up |
| Solar noon | 12:26 | 58.6° high |
| Golden hour starts | 17:43 | sun 6° up |
| Sunset | 18:12 | 258° WSW |
| Civil dusk | 18:35 | 6° below |
| Nautical dusk | 19:01 | 12° below |
| Astronomical dusk | 19:26 | 18° below |
| Day length | 11 h 33 min | |
Sun path diagram for Tamboril
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 86.0° at solar noon in Tamboril; on the December solstice only 47.1°. Sunrise swings from 65° ENE in June to 115° ESE in December — a 50° arc along the horizon.
Sunrise, sunset and sun height by month
Values for the 21st of each month, local clock time including daylight saving time.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 07:19 | 12:53 | 18:28 | 11 h 09 min | 50.7° |
| February | 07:07 | 12:56 | 18:44 | 11 h 37 min | 60.1° |
| March | 06:45 | 12:49 | 18:53 | 12 h 08 min | 70.9° |
| April | 06:20 | 12:41 | 19:02 | 12 h 42 min | 82.5° |
| May | 06:05 | 12:39 | 19:13 | 13 h 08 min | 89.2° |
| June | 06:05 | 12:44 | 19:23 | 13 h 18 min | 86.0° |
| July | 06:14 | 12:48 | 19:22 | 13 h 08 min | 89.1° |
| August | 06:24 | 12:45 | 19:06 | 12 h 41 min | 82.5° |
| September | 06:31 | 12:35 | 18:39 | 12 h 08 min | 71.0° |
| October | 06:38 | 12:26 | 18:14 | 11 h 36 min | 59.7° |
| November | 06:54 | 12:28 | 18:02 | 11 h 08 min | 50.5° |
| December | 07:11 | 12:40 | 18:09 | 10 h 57 min | 47.1° |
A year of daylight in Tamboril
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Tamboril
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
18°collects the most energy over a year: 1599 kWh per kWp.
26°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | November kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1530 | 96% | 3.29 | 1.6× |
| 15° | 1597 | 100% | 3.84 | 1.2× |
| 18° year-round best | 1599 | 100% | 3.92 | 1.2× |
| 19° = latitude | 1599 | 100% | 3.95 | 1.2× |
| 26° off-grid best | 1587 | 99% | 4.09 | 1.1× |
| 30° | 1572 | 98% | 4.15 | 1.2× |
| 45° | 1456 | 91% | 4.22 | 1.4× |
| 60° | 1260 | 79% | 4.04 | 1.9× |
| 70° | 1093 | 68% | 3.78 | 2.4× |
| 90° | 741 | 46% | 2.96 | 3.2× |
A fixed array in Tamboril produces the most over a year at 18°. The design month for an off-grid system is November: at 26° it makes 4.09 kWh per kWp a day, 4% more than at 18°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Tamboril at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 18° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 18° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.19 | 5.00 | 4.14 | 4.08 | 23.0 °C |
| February | 4.91 | 4.77 | 3.94 | 4.50 | 23.4 °C |
| March | 5.50 | 4.07 | 3.35 | 4.69 | 24.0 °C |
| April | 5.88 | 3.08 | 2.51 | 4.64 | 25.0 °C |
| May | 5.75 | 2.36 | 1.89 | 4.31 | 26.0 °C |
| June | 6.08 | 2.14 | 1.70 | 4.43 | 26.9 °C |
| July | 6.15 | 2.28 | 1.82 | 4.52 | 27.0 °C |
| August | 6.02 | 2.82 | 2.26 | 4.61 | 27.2 °C |
| September | 5.66 | 3.69 | 2.99 | 4.62 | 27.1 °C |
| October | 4.95 | 4.32 | 3.52 | 4.34 | 26.5 °C |
| November | 4.16 | 4.60 | 3.78 | 3.92 | 24.8 °C |
| December | 3.97 | 4.99 | 4.12 | 3.92 | 23.6 °C |
| Year | 5.27 avg | 3.67 avg | 1093 kWh | 1599 kWh |
Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 690 Wp of panels at 70°, versus 300 Wp at 18°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Tamboril
Distance between rows of 2 m long panels (slope length) so that no row shades the next between 10:00 and 14:00 solar time on the winter solstice.
2.6 mrow pitch at 70°
2.5 mrow pitch at 18°
How Tamboril compares in the Dominican Republic
Against the other 44 places in the Dominican Republic with climate data, for a fixed array at its best angle.
45thof 45 places in the Dominican Republic for sunshine: 5.27 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in the Dominican Republic: 1,599 against 1,650 kWh per kWp.
+4 mindaylight on the longest day, compared with Santo Domingo: 13 h 18 min against 13 h 14 min.
18°best year-round tilt here; across the Dominican Republic it runs from 18° in Santo Domingo to 19° in Santiago de los Caballeros.
Tamboril gets the least sun of the 45 places in the Dominican Republic (5.27 peak sun hours a day); the sunniest is Santa Cruz de Barahona with 5.59. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.70 kWh a day here, against 1.69 kWh on average in the Dominican Republic. The shortest day lasts 10 h 57 min, −4 min compared with Santo Domingo.
Solar forecast for Tamboril, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Tamboril
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Places near Tamboril
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A free, live card for Tamboril: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
Sun positions: NREL Solar Position Algorithm. Climate: NASA POWER monthly climatology (NASA Langley Research Center). Forecast: Deutscher Wetterdienst, ICON-EU (CC BY 4.0), processed. Places: GeoNames (CC BY 4.0). Time zones: IANA. Sources and licences.