Chaco · Argentina · 27.42° S · 59.04° W
Solar position in Fontana
Sun position, daylight and the best solar panel angle for Fontana — computed for 27.42° S, 59.04° W, 49 m above sea level.
The sun right now
Sun in Fontana today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:49 | sun 18° below horizon |
| Nautical dawn | 05:19 | 12° below |
| Civil dawn | 05:47 | 6° below |
| Sunrise | 06:11 | 104° ESE |
| Golden hour ends | 06:43 | sun 6° up |
| Solar noon | 12:40 | 74.5° high |
| Golden hour starts | 18:37 | sun 6° up |
| Sunset | 19:09 | 256° WSW |
| Civil dusk | 19:33 | 6° below |
| Nautical dusk | 20:02 | 12° below |
| Astronomical dusk | 20:31 | 18° below |
| Day length | 12 h 58 min | |
Sun path diagram for Fontana
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 39.2° at solar noon in Fontana; on the December solstice only 86.0°. Sunrise swings from 64° ENE in June to 117° ESE in December — a 53° 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 | 06:20 | 13:07 | 19:54 | 13 h 34 min | 82.4° |
| February | 06:43 | 13:09 | 19:35 | 12 h 51 min | 73.0° |
| March | 07:00 | 13:03 | 19:05 | 12 h 06 min | 62.2° |
| April | 07:16 | 12:54 | 18:33 | 11 h 17 min | 50.6° |
| May | 07:32 | 12:52 | 18:12 | 10 h 40 min | 42.3° |
| June | 07:45 | 12:58 | 18:10 | 10 h 24 min | 39.2° |
| July | 07:43 | 13:02 | 18:22 | 10 h 39 min | 42.2° |
| August | 07:20 | 12:59 | 18:38 | 11 h 17 min | 50.6° |
| September | 06:46 | 12:49 | 18:51 | 12 h 05 min | 62.1° |
| October | 06:14 | 12:40 | 19:07 | 12 h 53 min | 73.4° |
| November | 05:54 | 12:42 | 19:29 | 13 h 35 min | 82.6° |
| December | 05:57 | 12:54 | 19:50 | 13 h 53 min | 86.0° |
A year of daylight in Fontana
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 Fontana
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
24°collects the most energy over a year: 1567 kWh per kWp.
52°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° | 1445 | 92% | 2.19 | 2.5× |
| 15° | 1549 | 99% | 2.76 | 1.9× |
| 24° year-round best | 1567 | 100% | 3.03 | 1.6× |
| 27° = latitude | 1566 | 100% | 3.10 | 1.6× |
| 30° | 1561 | 100% | 3.17 | 1.5× |
| 45° | 1481 | 94% | 3.38 | 1.3× |
| 52° off-grid best | 1414 | 90% | 3.41 | 1.3× |
| 60° | 1316 | 84% | 3.39 | 1.4× |
| 70° | 1165 | 74% | 3.28 | 1.8× |
| 90° | 805 | 51% | 2.79 | 3.0× |
A fixed array in Fontana produces the most over a year at 24°. The design month for an off-grid system is June: at 52° it makes 3.41 kWh per kWp a day, 13% more than at 24°, and costs 10% of the yearly total. Why steep panels win winter.
Off-grid solar in Fontana at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 24° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 24° | Mean temp. |
|---|---|---|---|---|---|
| January | 6.82 | 2.97 | 2.38 | 4.97 | 27.7 °C |
| February | 6.23 | 3.61 | 2.92 | 4.90 | 27.1 °C |
| March | 5.37 | 4.22 | 3.45 | 4.65 | 25.2 °C |
| April | 4.18 | 4.44 | 3.69 | 4.07 | 21.7 °C |
| May | 3.28 | 4.31 | 3.65 | 3.53 | 17.4 °C |
| June | 2.72 | 3.85 | 3.28 | 3.03 | 15.4 °C |
| July | 3.14 | 4.42 | 3.79 | 3.53 | 14.6 °C |
| August | 3.93 | 4.62 | 3.92 | 4.06 | 16.7 °C |
| September | 4.72 | 4.19 | 3.51 | 4.35 | 19.4 °C |
| October | 5.53 | 3.61 | 2.97 | 4.56 | 23.1 °C |
| November | 6.61 | 3.08 | 2.50 | 4.98 | 24.6 °C |
| December | 6.86 | 2.77 | 2.22 | 4.92 | 26.7 °C |
| Year | 4.94 avg | 3.84 avg | 1165 kWh | 1567 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 530 Wp of panels at 70°, versus 390 Wp at 24°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Fontana
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.
3.3 mrow pitch at 70°
2.9 mrow pitch at 24°
How Fontana compares in Argentina
Against the other 313 places in Argentina with climate data, for a fixed array at its best angle.
105thof 314 places in Argentina for sunshine, shared: 4.94 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Argentina: 1,567 against 1,639 kWh per kWp.
−36 mindaylight on the longest day, compared with Buenos Aires: 13 h 53 min against 14 h 29 min.
24°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); Fontana ranks joint 105th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.22 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 10 h 24 min, +34 min compared with Buenos Aires.
Solar forecast for Fontana, 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 Fontana
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Places near Fontana
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A free, live card for Fontana: 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.