Solarposition.org

Treinta y Tres Department · Uruguay · 33.23° S · 54.39° W

Solar position in Treinta y Tres

Sun position, daylight and the best solar panel angle for Treinta y Tres — computed for 33.23° S, 54.39° W, 55 m above sea level.

Sunrise today05:46105° ESE
Sunset today18:57255° WSW
Best panel angle28°year-round, facing north
Off-grid angle58°best for the darkest month

The sun right now

Azimuth180.0°
Elevation68.7°
At solar noon, 12:21Open on the sun map

Sun in Treinta y Tres today

Saturday, 24 October 2026 · local time UTC−3

EventTimeDirection / height
Astronomical dawn04:18sun 18° below horizon
Nautical dawn04:4912° below
Civil dawn05:206° below
Sunrise05:46105° ESE
Golden hour ends06:19sun 6° up
Solar noon12:2168.7° high
Golden hour starts18:24sun 6° up
Sunset18:57255° WSW
Civil dusk19:236° below
Nautical dusk19:5412° below
Astronomical dusk20:2618° below
Day length13 h 12 min

Sun path diagram for Treinta y Tres

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice891011121314151617EquinoxDecember solstice678910111213141516171819Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 33.4° at solar noon in Treinta y Tres; on the December solstice only 80.2°. 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January05:4912:4819:4713 h 58 min76.6°
February06:1912:5019:2213 h 03 min67.2°
March06:4112:4418:4712 h 06 min56.4°
April07:0312:3618:0711 h 04 min44.8°
May07:2512:3417:4210 h 17 min36.5°
June07:4012:3917:379 h 57 min33.4°
July07:3612:4417:5210 h 16 min36.4°
August07:0812:4018:1311 h 04 min44.8°
September06:2812:3018:3312 h 05 min56.3°
October05:4912:2218:5513 h 06 min67.6°
November05:2412:2319:2313 h 59 min76.8°
December05:2512:3519:4614 h 21 min80.2°

A year of daylight in Treinta y Tres

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Treinta y Tres

Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

28°collects the most energy over a year: 1566 kWh per kWp.

58°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 28°Best worst-month 58°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearJune kWh/kWp/dayBest ÷ worst month
0°140690%1.883.1×
15°153098%2.492.3×
28° year-round best1566100%2.911.8×
30°1565100%2.961.8×
33° = latitude1561100%3.031.7×
45°150996%3.241.4×
58° off-grid best139189%3.311.3×
60°136787%3.311.3×
70°123079%3.251.4×
90°88156%2.862.2×

A fixed array in Treinta y Tres produces the most over a year at 28°. The design month for an off-grid system is June: at 58° it makes 3.31 kWh per kWp a day, 14% more than at 28°, and costs 11% of the yearly total. Why steep panels win winter.

Off-grid solar in Treinta y Tres at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 28° (year-round best).

0123456January: 2.97 (70°)3.0JanFebruary: 3.33 (70°)3.3FebMarch: 3.79 (70°)3.8MarApril: 3.93 (70°)3.9AprMay: 3.43 (70°)3.4MayJune: 3.25 (70°)3.3JunJuly: 3.33 (70°)3.3JulAugust: 3.50 (70°)3.5AugSeptember: 3.56 (70°)3.6SepOctober: 3.41 (70°)3.4OctNovember: 3.11 (70°)3.1NovDecember: 2.83 (70°)2.8Dec28°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 28°Mean temp.
January7.073.622.975.3322.7 °C
February6.084.043.334.9922.3 °C
March5.174.533.794.7320.4 °C
April3.924.643.934.1317.0 °C
May2.793.993.433.2513.5 °C
June2.333.753.252.9110.9 °C
July2.513.833.333.0610.1 °C
August3.204.053.503.5311.7 °C
September4.264.153.564.1713.2 °C
October5.464.023.414.7616.0 °C
November6.773.723.115.3218.5 °C
December7.233.432.835.3720.8 °C
Year4.73 avg3.98 avg1230 kWh1566 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 420 Wp of panels at 70°, versus 410 Wp at 28°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Treinta y Tres

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 28°

Row spacing calculator

How Treinta y Tres compares in Uruguay

Against the other 30 places in Uruguay with climate data, for a fixed array at its best angle.

27thof 31 places in Uruguay for sunshine: 4.73 peak sun hours a day on flat ground.

−1%solar energy a year compared with the average place in Uruguay: 1,566 against 1,584 kWh per kWp.

−9 mindaylight on the longest day, compared with Montevideo: 14 h 21 min against 14 h 30 min.

28°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); Treinta y Tres ranks 27th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.83 kWh a day here, against 2.85 kWh on average in Uruguay. The shortest day lasts 9 h 57 min, +9 min compared with Montevideo.

The sunniest places in Uruguay

Solar forecast for Treinta y Tres, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in Treinta y Tres

What is the best solar panel angle in Treinta y Tres?
For a fixed array facing north, the best year-round tilt in Treinta y Tres is 28°, worth about 1566 kWh per kWp a year. An off-grid system that has to get through June does better at about 58°.
What time is sunrise and sunset in Treinta y Tres today?
On 24 October 2026 the sun rises at 05:46 and sets at 18:57 local time (UTC−3), giving 13 h 12 min of daylight. Solar noon is at 12:21.
How many peak sun hours does Treinta y Tres get?
On a flat surface 4.7 hours a day averaged over the year, from 2.3 in June to 7.2 in December. Panels tilted at 70° receive 3.4 sun hours a day in December.
How high does the sun get in Treinta y Tres?
At solar noon the sun stands 33.4° above the horizon on the June solstice and 80.2° on the December solstice.
Is Treinta y Tres a good place for solar panels?
With 4.7 peak sun hours a day on flat ground, Treinta y Tres ranks 27th of 31 places in Uruguay for sunshine. A 1 kWp array at the best angle (28°) makes about 1,566 kWh a year here, 1% less than the average place in Uruguay.

Places near Treinta y Tres

All places in Uruguay

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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.