Puerto Rico · 18.43° N · 66.49° W
Solar position in Manatí
Sun position, daylight and the best solar panel angle for Manatí — computed for 18.43° N, 66.49° W, 33 m above sea level.
The sun right now
Sun in Manatí today
Saturday, 24 October 2026 · local time UTC−4
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:09 | sun 18° below horizon |
| Nautical dawn | 05:34 | 12° below |
| Civil dawn | 06:00 | 6° below |
| Sunrise | 06:22 | 102° ESE |
| Golden hour ends | 06:52 | sun 6° up |
| Solar noon | 12:10 | 59.7° high |
| Golden hour starts | 17:27 | sun 6° up |
| Sunset | 17:57 | 258° WSW |
| Civil dusk | 18:19 | 6° below |
| Nautical dusk | 18:45 | 12° below |
| Astronomical dusk | 19:10 | 18° below |
| Day length | 11 h 35 min | |
Sun path diagram for Manatí
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 85.0° at solar noon in Manatí; on the December solstice only 48.1°. Sunrise swings from 65° ENE in June to 114° ESE in December — a 50° 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 | 07:01 | 12:37 | 18:13 | 11 h 13 min | 51.8° |
| February | 06:50 | 12:39 | 18:29 | 11 h 39 min | 61.2° |
| March | 06:29 | 12:33 | 18:37 | 12 h 08 min | 72.0° |
| April | 06:04 | 12:24 | 18:44 | 12 h 40 min | 83.6° |
| May | 05:50 | 12:22 | 18:54 | 13 h 04 min | 88.1° |
| June | 05:50 | 12:27 | 19:04 | 13 h 14 min | 85.0° |
| July | 06:00 | 12:32 | 19:04 | 13 h 04 min | 88.1° |
| August | 06:09 | 12:29 | 18:48 | 12 h 39 min | 83.5° |
| September | 06:14 | 12:18 | 18:22 | 12 h 08 min | 72.1° |
| October | 06:21 | 12:10 | 17:59 | 11 h 38 min | 60.7° |
| November | 06:35 | 12:11 | 17:47 | 11 h 12 min | 51.6° |
| December | 06:53 | 12:24 | 17:54 | 11 h 01 min | 48.1° |
A year of daylight in Manatí
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 Manatí
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
17°collects the most energy over a year: 1578 kWh per kWp.
25°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 | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1519 | 96% | 3.24 | 1.5× |
| 15° | 1577 | 100% | 3.84 | 1.2× |
| 17° year-round best | 1578 | 100% | 3.91 | 1.2× |
| 18° = latitude | 1578 | 100% | 3.94 | 1.2× |
| 25° off-grid best | 1566 | 99% | 4.12 | 1.1× |
| 30° | 1546 | 98% | 4.22 | 1.2× |
| 45° | 1430 | 91% | 4.35 | 1.4× |
| 60° | 1236 | 78% | 4.22 | 1.8× |
| 70° | 1073 | 68% | 3.99 | 2.3× |
| 90° | 734 | 47% | 3.23 | 2.8× |
A fixed array in Manatí produces the most over a year at 17°. The design month for an off-grid system is December: at 25° it makes 4.12 kWh per kWp a day, 6% more than at 17°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Manatí 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 | 4.35 | 4.90 | 4.01 | 4.08 | 25.2 °C |
| February | 5.06 | 4.70 | 3.86 | 4.51 | 25.1 °C |
| March | 5.55 | 4.01 | 3.28 | 4.65 | 25.3 °C |
| April | 5.98 | 3.15 | 2.55 | 4.70 | 26.1 °C |
| May | 5.76 | 2.43 | 1.94 | 4.33 | 26.8 °C |
| June | 5.90 | 2.23 | 1.77 | 4.34 | 27.5 °C |
| July | 5.91 | 2.31 | 1.83 | 4.37 | 27.8 °C |
| August | 5.81 | 2.78 | 2.23 | 4.45 | 28.0 °C |
| September | 5.47 | 3.52 | 2.84 | 4.41 | 28.0 °C |
| October | 4.91 | 4.14 | 3.35 | 4.21 | 27.7 °C |
| November | 4.30 | 4.53 | 3.69 | 3.93 | 26.7 °C |
| December | 4.12 | 4.88 | 3.99 | 3.91 | 25.8 °C |
| Year | 5.26 avg | 3.63 avg | 1073 kWh | 1578 kWh |
Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 670 Wp of panels at 70°, versus 300 Wp at 17°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Manatí
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.
2.6 mrow pitch at 70°
2.5 mrow pitch at 17°
How Manatí compares in Puerto Rico
Against the other 20 places in Puerto Rico with climate data, for a fixed array at its best angle.
20thof 21 places in Puerto Rico for sunshine, shared: 5.26 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Puerto Rico: 1,578 against 1,627 kWh per kWp.
±0 mindaylight on the longest day, compared with San Juan: 13 h 14 min against 13 h 14 min.
17°best year-round tilt here; across Puerto Rico it runs from 17° in San Juan to 18° in Arecibo.
Of the 21 places in Puerto Rico, Guayama gets the most sun (5.56 peak sun hours a day) and Barceloneta and one other place the least (5.26); Manatí ranks joint 20th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.77 kWh a day here, against 1.75 kWh on average in Puerto Rico. The shortest day lasts 11 h 01 min, ±0 min compared with San Juan.
Solar forecast for Manatí, 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 Manatí
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A free, live card for Manatí: 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.