La Rioja · Argentina · 29.16° S · 67.50° W
Solar position in Chilecito
Sun position, daylight and the best solar panel angle for Chilecito — computed for 29.16° S, 67.50° W, 1107 m above sea level.
The sun right now
Sun in Chilecito today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:19 | sun 18° below horizon |
| Nautical dawn | 05:49 | 12° below |
| Civil dawn | 06:18 | 6° below |
| Sunrise | 06:43 | 104° ESE |
| Golden hour ends | 07:15 | sun 6° up |
| Solar noon | 13:14 | 72.8° high |
| Golden hour starts | 19:13 | sun 6° up |
| Sunset | 19:45 | 256° WSW |
| Civil dusk | 20:09 | 6° below |
| Nautical dusk | 20:39 | 12° below |
| Astronomical dusk | 21:09 | 18° below |
| Day length | 13 h 02 min | |
Sun path diagram for Chilecito
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 37.4° at solar noon in Chilecito; on the December solstice only 84.3°. Sunrise swings from 63° ENE in June to 118° ESE in December — a 54° 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 | 06:50 | 13:41 | 20:31 | 13 h 41 min | 80.6° |
| February | 07:15 | 13:43 | 20:10 | 12 h 55 min | 71.2° |
| March | 07:34 | 13:36 | 19:39 | 12 h 06 min | 60.4° |
| April | 07:51 | 13:28 | 19:05 | 11 h 13 min | 48.8° |
| May | 08:09 | 13:26 | 18:43 | 10 h 33 min | 40.6° |
| June | 08:23 | 13:31 | 18:40 | 10 h 17 min | 37.4° |
| July | 08:20 | 13:36 | 18:52 | 10 h 33 min | 40.5° |
| August | 07:56 | 13:33 | 19:10 | 11 h 13 min | 48.9° |
| September | 07:20 | 13:23 | 19:25 | 12 h 05 min | 60.3° |
| October | 06:46 | 13:14 | 19:43 | 12 h 57 min | 71.7° |
| November | 06:24 | 13:15 | 20:07 | 13 h 42 min | 80.9° |
| December | 06:27 | 13:28 | 20:28 | 14 h 01 min | 84.3° |
A year of daylight in Chilecito
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 Chilecito
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
29°collects the most energy over a year: 1990 kWh per kWp.
37°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 | May kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1766 | 89% | 3.20 | 2.2× |
| 15° | 1938 | 97% | 4.11 | 1.6× |
| 29° year-round best = latitude | 1990 | 100% | 4.71 | 1.3× |
| 30° | 1989 | 100% | 4.75 | 1.3× |
| 37° off-grid best | 1972 | 99% | 4.94 | 1.2× |
| 45° | 1920 | 96% | 5.08 | 1.3× |
| 60° | 1734 | 87% | 5.09 | 1.7× |
| 70° | 1554 | 78% | 4.92 | 2.2× |
| 90° | 1097 | 55% | 4.16 | 4.5× |
A fixed array in Chilecito produces the most over a year at 29°. The design month for an off-grid system is May: at 37° it makes 4.94 kWh per kWp a day, 5% more than at 29°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Chilecito at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 29° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 29° | Mean temp. |
|---|---|---|---|---|---|
| January | 7.46 | 3.23 | 2.67 | 5.37 | 21.2 °C |
| February | 6.74 | 3.96 | 3.30 | 5.39 | 20.0 °C |
| March | 5.88 | 4.81 | 4.06 | 5.34 | 18.0 °C |
| April | 4.87 | 5.64 | 4.82 | 5.20 | 14.8 °C |
| May | 3.88 | 5.67 | 4.92 | 4.71 | 11.0 °C |
| June | 3.60 | 6.05 | 5.28 | 4.75 | 9.0 °C |
| July | 3.93 | 6.36 | 5.57 | 5.10 | 8.2 °C |
| August | 4.94 | 6.50 | 5.64 | 5.71 | 10.3 °C |
| September | 6.18 | 5.91 | 5.09 | 6.12 | 12.8 °C |
| October | 7.33 | 4.81 | 4.08 | 6.20 | 16.5 °C |
| November | 8.01 | 3.64 | 3.04 | 5.93 | 19.2 °C |
| December | 8.01 | 3.08 | 2.55 | 5.59 | 20.8 °C |
| Year | 5.90 avg | 4.98 avg | 1554 kWh | 1990 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 460 Wp of panels at 70°, versus 250 Wp at 29°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Chilecito
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.
3.4 mrow pitch at 70°
3.2 mrow pitch at 29°
How Chilecito compares in Argentina
Against the other 313 places in Argentina with climate data, for a fixed array at its best angle.
3rdof 314 places in Argentina for sunshine: 5.90 peak sun hours a day on flat ground.
+21%solar energy a year compared with the average place in Argentina: 1,990 against 1,639 kWh per kWp.
−28 mindaylight on the longest day, compared with Buenos Aires: 14 h 01 min against 14 h 29 min.
29°best year-round tilt here; across Argentina it runs from 21° in Tartagal to 44° in Río Gallegos.
Of the 314 places in Argentina, Belén gets the most sun (6.11 peak sun hours a day) and Ushuaia the least (2.59); Chilecito ranks 3rd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.55 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 10 h 17 min, +27 min compared with Buenos Aires.
Solar forecast for Chilecito, 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 Chilecito
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A free, live card for Chilecito: 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.