Salto Department · Uruguay · 31.39° S · 57.96° W
Solar position in Salto
Sun position, daylight and the best solar panel angle for Salto — computed for 31.39° S, 57.96° W, 52 m above sea level.
The sun right now
Sun in Salto today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:36 | sun 18° below horizon |
| Nautical dawn | 05:07 | 12° below |
| Civil dawn | 05:37 | 6° below |
| Sunrise | 06:02 | 104° ESE |
| Golden hour ends | 06:35 | sun 6° up |
| Solar noon | 12:36 | 70.5° high |
| Golden hour starts | 18:36 | sun 6° up |
| Sunset | 19:09 | 255° WSW |
| Civil dusk | 19:35 | 6° below |
| Nautical dusk | 20:05 | 12° below |
| Astronomical dusk | 20:35 | 18° below |
| Day length | 13 h 07 min | |
Sun path diagram for Salto
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 35.2° at solar noon in Salto; on the December solstice only 82.1°. Sunrise swings from 63° ENE in June to 118° ESE in December — a 56° 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 | 06:07 | 13:03 | 19:58 | 13 h 50 min | 78.4° |
| February | 06:35 | 13:05 | 19:34 | 12 h 59 min | 69.0° |
| March | 06:55 | 12:58 | 19:01 | 12 h 06 min | 58.2° |
| April | 07:16 | 12:50 | 18:24 | 11 h 08 min | 46.6° |
| May | 07:36 | 12:48 | 18:00 | 10 h 24 min | 38.4° |
| June | 07:50 | 12:53 | 17:56 | 10 h 06 min | 35.2° |
| July | 07:46 | 12:58 | 18:10 | 10 h 24 min | 38.3° |
| August | 07:20 | 12:55 | 18:29 | 11 h 09 min | 46.7° |
| September | 06:42 | 12:45 | 18:47 | 12 h 05 min | 58.1° |
| October | 06:05 | 12:36 | 19:07 | 13 h 02 min | 69.5° |
| November | 05:42 | 12:37 | 19:33 | 13 h 51 min | 78.6° |
| December | 05:44 | 12:49 | 19:55 | 14 h 12 min | 82.1° |
A year of daylight in Salto
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 Salto
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
27°collects the most energy over a year: 1587 kWh per kWp.
57°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 | June kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1432 | 90% | 1.99 | 2.9× |
| 15° | 1555 | 98% | 2.61 | 2.1× |
| 27° year-round best | 1587 | 100% | 2.99 | 1.8× |
| 30° | 1586 | 100% | 3.07 | 1.7× |
| 31° = latitude | 1584 | 100% | 3.10 | 1.7× |
| 45° | 1523 | 96% | 3.34 | 1.4× |
| 57° off-grid best | 1409 | 89% | 3.41 | 1.3× |
| 60° | 1373 | 86% | 3.40 | 1.3× |
| 70° | 1229 | 77% | 3.33 | 1.5× |
| 90° | 869 | 55% | 2.90 | 2.5× |
A fixed array in Salto produces the most over a year at 27°. The design month for an off-grid system is June: at 57° it makes 3.41 kWh per kWp a day, 14% more than at 27°, and costs 11% of the yearly total. Why steep panels win winter.
Off-grid solar in Salto at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 27° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 27° | Mean temp. |
|---|---|---|---|---|---|
| January | 7.04 | 3.40 | 2.75 | 5.19 | 26.2 °C |
| February | 6.18 | 3.92 | 3.20 | 4.97 | 25.0 °C |
| March | 5.30 | 4.51 | 3.73 | 4.77 | 22.5 °C |
| April | 4.03 | 4.67 | 3.92 | 4.17 | 18.9 °C |
| May | 2.92 | 4.09 | 3.50 | 3.33 | 14.7 °C |
| June | 2.46 | 3.85 | 3.33 | 2.99 | 12.1 °C |
| July | 2.75 | 4.17 | 3.62 | 3.31 | 11.3 °C |
| August | 3.54 | 4.46 | 3.84 | 3.88 | 13.0 °C |
| September | 4.55 | 4.37 | 3.72 | 4.41 | 15.1 °C |
| October | 5.54 | 3.92 | 3.29 | 4.75 | 18.5 °C |
| November | 6.84 | 3.52 | 2.90 | 5.25 | 21.5 °C |
| December | 7.17 | 3.19 | 2.59 | 5.20 | 24.4 °C |
| Year | 4.85 avg | 4.01 avg | 1229 kWh | 1587 kWh |
Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 450 Wp of panels at 70°, versus 390 Wp at 27°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Salto
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.
3.7 mrow pitch at 70°
3.2 mrow pitch at 27°
How Salto compares in Uruguay
Against the other 30 places in Uruguay with climate data, for a fixed array at its best angle.
2ndof 31 places in Uruguay for sunshine: 4.85 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Uruguay: 1,587 against 1,584 kWh per kWp.
−19 mindaylight on the longest day, compared with Montevideo: 14 h 12 min against 14 h 30 min.
27°best year-round tilt here; across Uruguay it runs from 26° in Artigas to 29° in Montevideo.
Of the 31 places in Uruguay, Artigas gets the most sun (4.86 peak sun hours a day) and Rocha the least (4.64); Salto ranks 2nd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.59 kWh a day here, against 2.85 kWh on average in Uruguay. The shortest day lasts 10 h 06 min, +18 min compared with Montevideo.
Solar forecast for Salto, 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 Salto
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Places near Salto
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A free, live card for Salto: 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.