Solarposition.org

Koh Kong · Cambodia · 11.55° N · 103.04° E

Solar position in Smach Mean Chey

Sun position, daylight and the best solar panel angle for Smach Mean Chey — computed for 11.55° N, 103.04° E, 5 m above sea level.

Sunrise today05:58102° ESE
Sunset today17:45258° WSW
Best panel angle14°year-round, facing south
Off-grid angle0°best for the darkest month

The sun right now

Azimuth180.0°
Elevation66.4°
At solar noon, 11:51Open on the sun map

Sun in Smach Mean Chey today

Sunday, 25 October 2026 · local time UTC+7

EventTimeDirection / height
Astronomical dawn04:47sun 18° below horizon
Nautical dawn05:1212° below
Civil dawn05:366° below
Sunrise05:58102° ESE
Golden hour ends06:27sun 6° up
Solar noon11:5166.4° high
Golden hour starts17:16sun 6° up
Sunset17:45258° WSW
Civil dusk18:066° below
Nautical dusk18:3112° below
Astronomical dusk18:5618° below
Day length11 h 47 min

Sun path diagram for Smach Mean Chey

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 78.1° at solar noon in Smach Mean Chey; on the December solstice only 55.0°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 48° 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
January06:3212:1918:0511 h 33 min58.6°
February06:2612:2118:1611 h 49 min67.9°
March06:1112:1518:1812 h 07 min78.7°
April05:5312:0618:1912 h 27 min89.7°
May05:4312:0418:2512 h 42 min81.4°
June05:4512:0918:3312 h 48 min78.1°
July05:5312:1418:3512 h 42 min81.1°
August05:5712:1118:2412 h 27 min89.4°
September05:5712:0018:0412 h 08 min79.2°
October05:5711:5217:4711 h 49 min67.8°
November06:0611:5317:4011 h 33 min58.6°
December06:2212:0517:4911 h 27 min55.0°

A year of daylight in Smach Mean Chey

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 Smach Mean Chey

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

14°collects the most energy over a year: 1414 kWh per kWp.

0°gives the most in the darkest month — the one an off-grid system is sized for.

30%40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 14°Best worst-month 0°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearJuly kWh/kWp/dayBest ÷ worst month
0° off-grid best138098%3.281.3×
12° = latitude1413100%3.131.4×
14° year-round best1414100%3.091.5×
15°1414100%3.071.5×
30°137297%2.711.8×
45°125789%2.232.2×
60°107876%1.662.8×
70°93166%1.293.4×
90°64846%1.003.3×

A fixed array in Smach Mean Chey produces the most over a year at 14°. The design month for an off-grid system is July: at 0° it makes 3.28 kWh per kWp a day, 6% more than at 14°, and costs 2% of the yearly total. Why steep panels win winter.

Off-grid solar in Smach Mean Chey at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 14° (year-round best).

012345January: 4.07 (70°)4.1JanFebruary: 3.51 (70°)3.5FebMarch: 2.80 (70°)2.8MarApril: 2.06 (70°)2.1AprMay: 1.49 (70°)1.5MayJune: 1.26 (70°)1.3JunJuly: 1.29 (70°)1.3JulAugust: 1.54 (70°)1.5AugSeptember: 1.97 (70°)2.0SepOctober: 2.75 (70°)2.7OctNovember: 3.69 (70°)3.7NovDecember: 4.24 (70°)4.2Dec14°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 14°Mean temp.
January5.004.964.074.4525.4 °C
February5.294.303.514.4926.2 °C
March5.433.472.804.3927.3 °C
April5.512.582.064.2428.0 °C
May4.891.891.493.6527.8 °C
June4.411.611.263.2527.1 °C
July4.151.641.293.0926.7 °C
August4.131.941.543.1526.6 °C
September4.162.461.973.2926.4 °C
October4.613.382.753.8126.5 °C
November4.904.523.694.2726.4 °C
December4.935.184.244.4525.6 °C
Year4.78 avg3.16 avg931 kWh1414 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 930 Wp of panels at 70°, versus 380 Wp at 14°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Smach Mean Chey

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.

2.2 mrow pitch at 70°

2.3 mrow pitch at 14°

Row spacing calculator

How Smach Mean Chey compares in Cambodia

Against the other 45 places in Cambodia with climate data, for a fixed array at its best angle.

46thof 46 places in Cambodia for sunshine: 4.78 peak sun hours a day on flat ground.

−7%solar energy a year compared with the average place in Cambodia: 1,414 against 1,520 kWh per kWp.

±0 mindaylight on the longest day, compared with Phnom Penh: 12 h 48 min against 12 h 48 min.

14°best year-round tilt here; across Cambodia it runs from 12° in Phnom Penh to 16° in Anlong Veaeng.

Smach Mean Chey gets the least sun of the 46 places in Cambodia (4.78 peak sun hours a day); the sunniest is Snuol with 5.29. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.26 kWh a day here, against 1.39 kWh on average in Cambodia. The shortest day lasts 11 h 27 min, ±0 min compared with Phnom Penh.

The sunniest places in Cambodia

Solar forecast for Smach Mean Chey, 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 Smach Mean Chey

What is the best solar panel angle in Smach Mean Chey?
For a fixed array facing south, the best year-round tilt in Smach Mean Chey is 14°, worth about 1414 kWh per kWp a year. An off-grid system that has to get through July does better at about 0°.
What time is sunrise and sunset in Smach Mean Chey today?
On 25 October 2026 the sun rises at 05:58 and sets at 17:45 local time (UTC+7), giving 11 h 47 min of daylight. Solar noon is at 11:51.
How many peak sun hours does Smach Mean Chey get?
On a flat surface 4.8 hours a day averaged over the year, from 4.1 in August to 5.5 in April. Panels tilted at 70° receive 1.6 sun hours a day in June.
How high does the sun get in Smach Mean Chey?
At solar noon the sun stands 78.1° above the horizon on the June solstice and 55.0° on the December solstice.
Is Smach Mean Chey a good place for solar panels?
With 4.8 peak sun hours a day on flat ground, Smach Mean Chey ranks 46th of 46 places in Cambodia for sunshine. A 1 kWp array at the best angle (14°) makes about 1,414 kWh a year here, 7% less than the average place in Cambodia.

Places near Smach Mean Chey

All places in Cambodia

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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.