Santa Cruz Department · Bolivia · 17.34° S · 63.25° W
Solar position in Montero
Sun position, daylight and the best solar panel angle for Montero — computed for 17.34° S, 63.25° W, 300 m above sea level.
The sun right now
Sun in Montero today
Saturday, 24 October 2026 · local time UTC−4
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:23 | sun 18° below horizon |
| Nautical dawn | 04:50 | 12° below |
| Civil dawn | 05:16 | 6° below |
| Sunrise | 05:38 | 103° ESE |
| Golden hour ends | 06:07 | sun 6° up |
| Solar noon | 11:57 | 84.6° high |
| Golden hour starts | 17:46 | sun 6° up |
| Sunset | 18:15 | 257° WSW |
| Civil dusk | 18:38 | 6° below |
| Nautical dusk | 19:04 | 12° below |
| Astronomical dusk | 19:30 | 18° below |
| Day length | 12 h 37 min | |
Sun path diagram for Montero
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 49.2° at solar noon in Montero; on the December solstice only 83.9°. Sunrise swings from 66° ENE in June to 115° ESE in December — a 49° 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 | 05:54 | 12:24 | 18:53 | 12 h 59 min | 87.5° |
| February | 06:09 | 12:26 | 18:43 | 12 h 33 min | 83.0° |
| March | 06:17 | 12:20 | 18:22 | 12 h 06 min | 72.2° |
| April | 06:23 | 12:11 | 17:59 | 11 h 37 min | 60.7° |
| May | 06:32 | 12:09 | 17:46 | 11 h 15 min | 52.4° |
| June | 06:42 | 12:14 | 17:47 | 11 h 06 min | 49.2° |
| July | 06:42 | 12:19 | 17:56 | 11 h 14 min | 52.3° |
| August | 06:27 | 12:16 | 18:04 | 11 h 37 min | 60.7° |
| September | 06:03 | 12:06 | 18:08 | 12 h 05 min | 72.1° |
| October | 05:40 | 11:57 | 18:14 | 12 h 34 min | 83.5° |
| November | 05:29 | 11:58 | 18:28 | 13 h 00 min | 87.3° |
| December | 05:36 | 12:11 | 18:46 | 13 h 10 min | 83.9° |
A year of daylight in Montero
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 Montero
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
17°collects the most energy over a year: 1433 kWh per kWp.
31°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° | 1384 | 97% | 2.72 | 1.6× |
| 15° | 1433 | 100% | 3.20 | 1.3× |
| 17° year-round best = latitude | 1433 | 100% | 3.24 | 1.3× |
| 30° | 1402 | 98% | 3.48 | 1.2× |
| 31° off-grid best | 1397 | 97% | 3.49 | 1.2× |
| 45° | 1294 | 90% | 3.56 | 1.4× |
| 60° | 1117 | 78% | 3.43 | 1.8× |
| 70° | 968 | 68% | 3.23 | 2.2× |
| 90° | 664 | 46% | 2.59 | 2.6× |
A fixed array in Montero produces the most over a year at 17°. The design month for an off-grid system is June: at 31° it makes 3.49 kWh per kWp a day, 8% more than at 17°, and costs 3% of the yearly total. Why steep panels win winter.
Off-grid solar in Montero at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 17° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 17° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.60 | 2.16 | 1.72 | 4.16 | 26.1 °C |
| February | 5.18 | 2.61 | 2.11 | 4.02 | 25.5 °C |
| March | 5.10 | 3.30 | 2.68 | 4.16 | 25.5 °C |
| April | 4.57 | 3.88 | 3.19 | 3.98 | 24.6 °C |
| May | 3.73 | 3.88 | 3.21 | 3.45 | 22.2 °C |
| June | 3.41 | 3.89 | 3.23 | 3.24 | 21.5 °C |
| July | 3.80 | 4.25 | 3.53 | 3.61 | 21.6 °C |
| August | 4.51 | 4.27 | 3.52 | 4.07 | 23.7 °C |
| September | 4.90 | 3.54 | 2.88 | 4.09 | 26.1 °C |
| October | 5.34 | 2.88 | 2.31 | 4.18 | 27.5 °C |
| November | 5.64 | 2.27 | 1.81 | 4.21 | 27.3 °C |
| December | 5.40 | 2.02 | 1.60 | 3.97 | 26.6 °C |
| Year | 4.76 avg | 3.25 avg | 968 kWh | 1433 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 740 Wp of panels at 70°, versus 360 Wp at 17°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Montero
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.
2.5 mrow pitch at 70°
2.5 mrow pitch at 17°
How Montero compares in Bolivia
Against the other 38 places in Bolivia with climate data, for a fixed array at its best angle.
34thof 39 places in Bolivia for sunshine, shared: 4.76 peak sun hours a day on flat ground.
−15%solar energy a year compared with the average place in Bolivia: 1,433 against 1,680 kWh per kWp.
+3 mindaylight on the longest day, compared with La Paz: 13 h 10 min against 13 h 07 min.
17°best year-round tilt here; across Bolivia it runs from 14° in Riberalta to 25° in Villazón.
Of the 39 places in Bolivia, Tupiza gets the most sun (6.59 peak sun hours a day) and Villa Yapacaní the least (4.60); Montero ranks joint 34th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.60 kWh a day here, against 1.69 kWh on average in Bolivia. The shortest day lasts 11 h 06 min, −3 min compared with La Paz.
Solar forecast for Montero, 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 Montero
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Places near Montero
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A free, live card for Montero: 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.