Solarposition.org

Saint James Parish · Jamaica · 18.51° N · 77.80° W

Solar position in Barrett Town

Sun position, daylight and the best solar panel angle for Barrett Town — computed for 18.51° N, 77.80° W, 53 m above sea level.

Sunrise today06:07102° ESE
Sunset today17:42258° WSW
Best panel angle17°year-round, facing south
Off-grid angle23°best for the darkest month

The sun right now

Azimuth180.0°
Elevation59.6°
At solar noon, 11:55Open on the sun map

Sun in Barrett Town today

Saturday, 24 October 2026 · local time UTC−5

EventTimeDirection / height
Astronomical dawn04:54sun 18° below horizon
Nautical dawn05:2012° below
Civil dawn05:456° below
Sunrise06:07102° ESE
Golden hour ends06:37sun 6° up
Solar noon11:5559.6° high
Golden hour starts17:12sun 6° up
Sunset17:42258° WSW
Civil dusk18:046° below
Nautical dusk18:3012° below
Astronomical dusk18:5618° below
Day length11 h 35 min

Sun path diagram for Barrett Town

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 solstice6789101112131415161718EquinoxDecember solstice7891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 85.1° at solar noon in Barrett Town; 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January06:4612:2217:5811 h 12 min51.7°
February06:3512:2418:1411 h 39 min61.1°
March06:1412:1818:2212 h 08 min71.9°
April05:5012:0918:2912 h 40 min83.5°
May05:3512:0718:4013 h 04 min88.2°
June05:3512:1318:5013 h 15 min85.1°
July05:4512:1718:4913 h 05 min88.2°
August05:5412:1418:3312 h 40 min83.4°
September05:5912:0418:0812 h 08 min72.0°
October06:0611:5517:4411 h 38 min60.6°
November06:2111:5717:3211 h 12 min51.5°
December06:3812:0917:3911 h 01 min48.1°

A year of daylight in Barrett Town

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 Barrett Town

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: 1595 kWh per kWp.

23°gives the most in the darkest month — the one an off-grid system is sized for.

20%30%40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 17°Best worst-month 23°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°153396%3.261.5×
15°1593100%3.901.3×
17° year-round best1595100%3.971.2×
19° = latitude1594100%4.031.2×
23° off-grid best1588100%4.151.2×
30°156398%4.311.3×
45°144591%4.451.5×
60°124778%4.331.9×
70°108168%4.102.4×
90°73546%3.323.2×

A fixed array in Barrett Town produces the most over a year at 17°. The design month for an off-grid system is December: at 23° it makes 4.15 kWh per kWp a day, 5% more than at 17°, and costs 0% of the yearly total. Why steep panels win winter.

Off-grid solar in Barrett Town at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 17° (year-round best).

0123456January: 4.07 (70°)4.1JanFebruary: 3.94 (70°)3.9FebMarch: 3.42 (70°)3.4MarApril: 2.58 (70°)2.6AprMay: 1.87 (70°)1.9MayJune: 1.70 (70°)1.7JunJuly: 1.82 (70°)1.8JulAugust: 2.23 (70°)2.2AugSeptember: 2.84 (70°)2.8SepOctober: 3.24 (70°)3.2OctNovember: 3.78 (70°)3.8NovDecember: 4.10 (70°)4.1Dec17°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 17°Mean temp.
January4.344.974.074.0925.7 °C
February5.104.823.944.5625.8 °C
March5.784.193.424.8526.1 °C
April6.193.192.584.8527.0 °C
May5.892.351.874.4027.6 °C
June5.882.151.704.3027.9 °C
July6.062.291.824.4628.3 °C
August5.862.792.234.4828.6 °C
September5.493.532.844.4328.5 °C
October4.754.013.244.0728.0 °C
November4.354.653.783.9927.1 °C
December4.165.034.103.9726.4 °C
Year5.32 avg3.66 avg1081 kWh1595 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 690 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 Barrett Town

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°

Row spacing calculator

How Barrett Town compares in Jamaica

Against the other 11 places in Jamaica with climate data, for a fixed array at its best angle.

11thof 12 places in Jamaica for sunshine: 5.32 peak sun hours a day on flat ground.

−1%solar energy a year compared with the average place in Jamaica: 1,594 against 1,618 kWh per kWp.

+2 mindaylight on the longest day, compared with Kingston: 13 h 15 min against 13 h 13 min.

17°best year-round tilt here; across Jamaica it runs from 17° in Kingston to 18° in Montego Bay.

Of the 12 places in Jamaica, Savanna-la-Mar gets the most sun (5.54 peak sun hours a day) and Ocho Rios the least (5.25); Barrett Town ranks 11th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.70 kWh a day here, against 1.69 kWh on average in Jamaica. The shortest day lasts 11 h 01 min, −2 min compared with Kingston.

The sunniest places in Jamaica

Solar forecast for Barrett Town, 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 Barrett Town

What is the best solar panel angle in Barrett Town?
For a fixed array facing south, the best year-round tilt in Barrett Town is 17°, worth about 1595 kWh per kWp a year. An off-grid system that has to get through December does better at about 23°.
What time is sunrise and sunset in Barrett Town today?
On 24 October 2026 the sun rises at 06:07 and sets at 17:42 local time (UTC−5), giving 11 h 35 min of daylight. Solar noon is at 11:55.
How many peak sun hours does Barrett Town get?
On a flat surface 5.3 hours a day averaged over the year, from 4.2 in December to 6.2 in April. Panels tilted at 70° receive 2.2 sun hours a day in June.
How high does the sun get in Barrett Town?
At solar noon the sun stands 85.1° above the horizon on the June solstice and 48.1° on the December solstice.
Is Barrett Town a good place for solar panels?
With 5.3 peak sun hours a day on flat ground, Barrett Town ranks 11th of 12 places in Jamaica for sunshine. A 1 kWp array at the best angle (17°) makes about 1,594 kWh a year here, 1% less than the average place in Jamaica.

Places near Barrett Town

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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.