Rocha Department · Uruguay · 34.48° S · 54.33° W
Solar position in Rocha
Sun position, daylight and the best solar panel angle for Rocha — computed for 34.48° S, 54.33° W, 8 m above sea level.
The sun right now
Sun in Rocha today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:14 | sun 18° below horizon |
| Nautical dawn | 04:46 | 12° below |
| Civil dawn | 05:18 | 6° below |
| Sunrise | 05:44 | 105° ESE |
| Golden hour ends | 06:18 | sun 6° up |
| Solar noon | 12:21 | 67.4° high |
| Golden hour starts | 18:25 | sun 6° up |
| Sunset | 18:59 | 255° WSW |
| Civil dusk | 19:25 | 6° below |
| Nautical dusk | 19:56 | 12° below |
| Astronomical dusk | 20:29 | 18° below |
| Day length | 13 h 15 min | |
Sun path diagram for Rocha
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 32.1° at solar noon in Rocha; on the December solstice only 79.0°. Sunrise swings from 62° ENE in June to 120° ESE in December — a 58° 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 | 05:46 | 12:48 | 19:50 | 14 h 04 min | 75.3° |
| February | 06:17 | 12:50 | 19:23 | 13 h 06 min | 65.9° |
| March | 06:41 | 12:44 | 18:46 | 12 h 06 min | 55.1° |
| April | 07:05 | 12:35 | 18:06 | 11 h 01 min | 43.5° |
| May | 07:28 | 12:33 | 17:39 | 10 h 11 min | 35.3° |
| June | 07:43 | 12:39 | 17:34 | 9 h 51 min | 32.1° |
| July | 07:38 | 12:43 | 17:49 | 10 h 11 min | 35.2° |
| August | 07:10 | 12:40 | 18:11 | 11 h 01 min | 43.6° |
| September | 06:28 | 12:30 | 18:33 | 12 h 05 min | 55.0° |
| October | 05:47 | 12:22 | 18:56 | 13 h 09 min | 66.4° |
| November | 05:20 | 12:23 | 19:25 | 14 h 05 min | 75.5° |
| December | 05:21 | 12:35 | 19:49 | 14 h 28 min | 79.0° |
A year of daylight in Rocha
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 Rocha
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: 1547 kWh per kWp.
59°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° | 1381 | 89% | 1.77 | 3.3× |
| 15° | 1508 | 97% | 2.37 | 2.4× |
| 29° year-round best | 1547 | 100% | 2.81 | 1.9× |
| 30° | 1547 | 100% | 2.83 | 1.9× |
| 34° = latitude | 1542 | 100% | 2.93 | 1.8× |
| 45° | 1495 | 97% | 3.12 | 1.5× |
| 59° off-grid best | 1369 | 88% | 3.20 | 1.3× |
| 60° | 1357 | 88% | 3.20 | 1.3× |
| 70° | 1223 | 79% | 3.15 | 1.3× |
| 90° | 879 | 57% | 2.79 | 2.1× |
A fixed array in Rocha produces the most over a year at 29°. The design month for an off-grid system is June: at 59° it makes 3.20 kWh per kWp a day, 14% more than at 29°, and costs 12% of the yearly total. Why steep panels win winter.
Off-grid solar in Rocha 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 | 7.13 | 3.70 | 3.04 | 5.37 | 22.6 °C |
| February | 6.10 | 4.13 | 3.41 | 5.04 | 22.3 °C |
| March | 5.05 | 4.55 | 3.80 | 4.68 | 20.5 °C |
| April | 3.72 | 4.49 | 3.80 | 3.97 | 17.4 °C |
| May | 2.64 | 3.85 | 3.30 | 3.12 | 14.1 °C |
| June | 2.20 | 3.64 | 3.15 | 2.81 | 11.2 °C |
| July | 2.33 | 3.60 | 3.13 | 2.87 | 10.0 °C |
| August | 3.06 | 3.96 | 3.43 | 3.44 | 11.2 °C |
| September | 4.19 | 4.20 | 3.62 | 4.17 | 12.5 °C |
| October | 5.38 | 4.06 | 3.45 | 4.74 | 15.1 °C |
| November | 6.74 | 3.80 | 3.18 | 5.32 | 17.8 °C |
| December | 7.26 | 3.50 | 2.90 | 5.38 | 20.6 °C |
| Year | 4.64 avg | 3.96 avg | 1223 kWh | 1547 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 410 Wp of panels at 70°, versus 420 Wp at 29°. The steep array is 3% smaller for the same winter. Size your own system.
Row spacing in Rocha
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.
4.1 mrow pitch at 70°
3.5 mrow pitch at 29°
How Rocha compares in Uruguay
Against the other 30 places in Uruguay with climate data, for a fixed array at its best angle.
31stof 31 places in Uruguay for sunshine: 4.64 peak sun hours a day on flat ground.
−2%solar energy a year compared with the average place in Uruguay: 1,547 against 1,584 kWh per kWp.
−2 mindaylight on the longest day, compared with Montevideo: 14 h 28 min against 14 h 30 min.
29°best year-round tilt here; across Uruguay it runs from 26° in Artigas to 29° in Montevideo.
Rocha gets the least sun of the 31 places in Uruguay (4.64 peak sun hours a day); the sunniest is Artigas with 4.86. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.90 kWh a day here, against 2.85 kWh on average in Uruguay. The shortest day lasts 9 h 51 min, +2 min compared with Montevideo.
Solar forecast for Rocha, 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 Rocha
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Places near Rocha
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A free, live card for Rocha: 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.