Argentina · 32.89° S · 68.85° W
Solar position in Mendoza
Sun position, daylight and the best solar panel angle for Mendoza — computed for 32.89° S, 68.85° W, 853 m above sea level.
The sun right now
Sun in Mendoza today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:16 | sun 18° below horizon |
| Nautical dawn | 05:48 | 12° below |
| Civil dawn | 06:18 | 6° below |
| Sunrise | 06:44 | 105° ESE |
| Golden hour ends | 07:17 | sun 6° up |
| Solar noon | 13:19 | 69.0° high |
| Golden hour starts | 19:21 | sun 6° up |
| Sunset | 19:55 | 255° WSW |
| Civil dusk | 20:20 | 6° below |
| Nautical dusk | 20:51 | 12° below |
| Astronomical dusk | 21:23 | 18° below |
| Day length | 13 h 11 min | |
Sun path diagram for Mendoza
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 33.7° at solar noon in Mendoza; on the December solstice only 80.5°. Sunrise swings from 62° ENE in June to 119° ESE in December — a 57° 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 | 06:48 | 13:46 | 20:44 | 13 h 56 min | 76.9° |
| February | 07:17 | 13:48 | 20:19 | 13 h 02 min | 67.5° |
| March | 07:39 | 13:42 | 19:44 | 12 h 06 min | 56.7° |
| April | 08:01 | 13:33 | 19:06 | 11 h 05 min | 45.1° |
| May | 08:22 | 13:31 | 18:40 | 10 h 18 min | 36.8° |
| June | 08:37 | 13:37 | 18:36 | 9 h 59 min | 33.7° |
| July | 08:33 | 13:41 | 18:50 | 10 h 18 min | 36.8° |
| August | 08:06 | 13:38 | 19:11 | 11 h 05 min | 45.2° |
| September | 07:26 | 13:28 | 19:31 | 12 h 05 min | 56.6° |
| October | 06:47 | 13:20 | 19:52 | 13 h 05 min | 68.0° |
| November | 06:22 | 13:21 | 20:20 | 13 h 58 min | 77.1° |
| December | 06:23 | 13:33 | 20:43 | 14 h 20 min | 80.5° |
A year of daylight in Mendoza
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 Mendoza
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
30°collects the most energy over a year: 1872 kWh per kWp.
54°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° | 1653 | 88% | 2.28 | 3.0× |
| 15° | 1818 | 97% | 3.14 | 2.1× |
| 30° year-round best | 1872 | 100% | 3.79 | 1.6× |
| 33° = latitude | 1869 | 100% | 3.89 | 1.5× |
| 45° | 1813 | 97% | 4.19 | 1.3× |
| 54° off-grid best | 1726 | 92% | 4.30 | 1.2× |
| 60° | 1647 | 88% | 4.33 | 1.3× |
| 70° | 1482 | 79% | 4.26 | 1.6× |
| 90° | 1056 | 56% | 3.77 | 3.0× |
A fixed array in Mendoza produces the most over a year at 30°. The design month for an off-grid system is June: at 54° it makes 4.30 kWh per kWp a day, 14% more than at 30°, and costs 8% of the yearly total. Why steep panels win winter.
Off-grid solar in Mendoza at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 30° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 30° | Mean temp. |
|---|---|---|---|---|---|
| January | 7.93 | 3.74 | 3.11 | 5.82 | 20.5 °C |
| February | 7.01 | 4.48 | 3.75 | 5.75 | 19.3 °C |
| March | 5.87 | 5.23 | 4.43 | 5.55 | 16.7 °C |
| April | 4.46 | 5.52 | 4.76 | 4.98 | 12.3 °C |
| May | 3.18 | 4.83 | 4.25 | 4.00 | 7.9 °C |
| June | 2.76 | 4.79 | 4.26 | 3.79 | 4.4 °C |
| July | 3.00 | 4.94 | 4.41 | 4.01 | 3.6 °C |
| August | 3.93 | 5.34 | 4.73 | 4.71 | 5.9 °C |
| September | 5.20 | 5.25 | 4.59 | 5.33 | 9.1 °C |
| October | 6.54 | 4.73 | 4.07 | 5.76 | 12.9 °C |
| November | 7.75 | 4.01 | 3.39 | 5.97 | 16.3 °C |
| December | 8.29 | 3.56 | 2.97 | 5.94 | 19.1 °C |
| Year | 5.48 avg | 4.70 avg | 1482 kWh | 1872 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 400 Wp of panels at 70°, versus 310 Wp at 30°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Mendoza
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.
3.9 mrow pitch at 70°
3.4 mrow pitch at 30°
How Mendoza compares in Argentina
Against the other 313 places in Argentina with climate data, for a fixed array at its best angle.
21stof 314 places in Argentina for sunshine: 5.49 peak sun hours a day on flat ground.
+14%solar energy a year compared with the average place in Argentina: 1,872 against 1,639 kWh per kWp.
−9 mindaylight on the longest day, compared with Buenos Aires: 14 h 20 min against 14 h 29 min.
30°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); Mendoza ranks 21st. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.97 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 9 h 59 min, +9 min compared with Buenos Aires.
Solar forecast for Mendoza, 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 Mendoza
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Places near Mendoza
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A free, live card for Mendoza: 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.