Rio Negro · Argentina · 41.96° S · 71.53° W
Solar position in El Bolsón
Sun position, daylight and the best solar panel angle for El Bolsón — computed for 41.96° S, 71.53° W, 320 m above sea level.
The sun right now
Sun in El Bolsón today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:59 | sun 18° below horizon |
| Nautical dawn | 05:37 | 12° below |
| Civil dawn | 06:12 | 6° below |
| Sunrise | 06:42 | 107° ESE |
| Golden hour ends | 07:20 | sun 6° up |
| Solar noon | 13:30 | 60.0° high |
| Golden hour starts | 19:41 | sun 6° up |
| Sunset | 20:19 | 253° WSW |
| Civil dusk | 20:48 | 6° below |
| Nautical dusk | 21:24 | 12° below |
| Astronomical dusk | 22:02 | 18° below |
| Day length | 13 h 37 min | |
Sun path diagram for El Bolsón
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 24.6° at solar noon in El Bolsón; on the December solstice only 71.5°. Sunrise swings from 59° ENE in June to 123° ESE in December — a 65° 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 | 06:36 | 13:57 | 21:17 | 14 h 41 min | 67.8° |
| February | 07:16 | 13:59 | 20:41 | 13 h 25 min | 58.4° |
| March | 07:50 | 13:52 | 19:55 | 12 h 06 min | 47.6° |
| April | 08:24 | 13:44 | 19:04 | 10 h 41 min | 36.0° |
| May | 08:55 | 13:42 | 18:29 | 9 h 35 min | 27.8° |
| June | 09:14 | 13:47 | 18:21 | 9 h 07 min | 24.6° |
| July | 09:05 | 13:52 | 18:39 | 9 h 34 min | 27.7° |
| August | 08:28 | 13:49 | 19:10 | 10 h 41 min | 36.1° |
| September | 07:36 | 13:39 | 19:42 | 12 h 05 min | 47.5° |
| October | 06:46 | 13:30 | 20:15 | 13 h 29 min | 58.9° |
| November | 06:10 | 13:32 | 20:53 | 14 h 43 min | 68.1° |
| December | 06:07 | 13:44 | 21:21 | 15 h 14 min | 71.5° |
A year of daylight in El Bolsón
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 El Bolsón
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
34°collects the most energy over a year: 1568 kWh per kWp.
68°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° | 1336 | 85% | 1.08 | 5.9× |
| 15° | 1495 | 95% | 1.56 | 4.2× |
| 30° | 1565 | 100% | 1.95 | 3.2× |
| 34° year-round best | 1568 | 100% | 2.03 | 3.0× |
| 42° = latitude | 1556 | 99% | 2.18 | 2.7× |
| 45° | 1544 | 98% | 2.23 | 2.6× |
| 60° | 1434 | 91% | 2.37 | 2.1× |
| 68° off-grid best | 1341 | 85% | 2.39 | 1.9× |
| 70° | 1314 | 84% | 2.39 | 1.9× |
| 90° | 986 | 63% | 2.24 | 1.7× |
A fixed array in El Bolsón produces the most over a year at 34°. The design month for an off-grid system is June: at 68° it makes 2.39 kWh per kWp a day, 18% more than at 34°, and costs 15% of the yearly total. Why steep panels win winter.
Off-grid solar in El Bolsón at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 34° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 34° | Mean temp. |
|---|---|---|---|---|---|
| January | 7.62 | 4.57 | 3.93 | 6.10 | 12.1 °C |
| February | 6.61 | 5.18 | 4.45 | 5.95 | 12.5 °C |
| March | 4.86 | 5.18 | 4.51 | 5.13 | 9.7 °C |
| April | 3.13 | 4.53 | 4.00 | 3.94 | 6.1 °C |
| May | 1.85 | 3.22 | 2.87 | 2.60 | 3.2 °C |
| June snow | 1.34 | 2.66 | 2.39 | 2.03 | 0.5 °C |
| July snow | 1.64 | 3.09 | 2.79 | 2.42 | -0.4 °C |
| August | 2.34 | 3.45 | 3.10 | 3.00 | 0.8 °C |
| September | 3.74 | 4.27 | 3.81 | 4.14 | 2.9 °C |
| October | 5.09 | 4.40 | 3.89 | 4.88 | 5.2 °C |
| November | 6.60 | 4.37 | 3.82 | 5.58 | 7.7 °C |
| December | 7.50 | 4.26 | 3.69 | 5.89 | 10.2 °C |
| Year | 4.35 avg | 4.09 avg | 1314 kWh | 1568 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 490 Wp of panels at 70°, versus 580 Wp at 34°. The steep array is 15% smaller for the same winter. Size your own system.
Row spacing in El Bolsón
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.
5.5 mrow pitch at 70°
4.5 mrow pitch at 34°
How El Bolsón compares in Argentina
Against the other 313 places in Argentina with climate data, for a fixed array at its best angle.
305thof 314 places in Argentina for sunshine: 4.35 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Argentina: 1,568 against 1,639 kWh per kWp.
+46 mindaylight on the longest day, compared with Buenos Aires: 15 h 14 min against 14 h 29 min.
34°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); El Bolsón ranks 305th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.39 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 9 h 07 min, −43 min compared with Buenos Aires.
Solar forecast for El Bolsón, 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 El Bolsón
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A free, live card for El Bolsón: 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.