Solarposition.org

Thừa Thiên Huế Province · Vietnam · 16.58° N · 107.36° E

Solar position in Phong Điền

Sun position, daylight and the best solar panel angle for Phong Điền — computed for 16.58° N, 107.36° E, 14 m above sea level.

Sunrise today05:45102° ESE
Sunset today17:23258° WSW
Best panel angle12°year-round, facing south
Off-grid angle39°best for the darkest month

The sun right now

Azimuth180.0°
Elevation61.3°
At solar noon, 11:34Open on the sun map

Sun in Phong Điền today

Sunday, 25 October 2026 · local time UTC+7

EventTimeDirection / height
Astronomical dawn04:32sun 18° below horizon
Nautical dawn04:5812° below
Civil dawn05:236° below
Sunrise05:45102° ESE
Golden hour ends06:14sun 6° up
Solar noon11:3461.3° high
Golden hour starts16:54sun 6° up
Sunset17:23258° WSW
Civil dusk17:456° below
Nautical dusk18:1012° below
Astronomical dusk18:3618° below
Day length11 h 38 min

Sun path diagram for Phong Điền

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 83.1° at solar noon in Phong Điền; on the December solstice only 50.0°. Sunrise swings from 65° ENE in June to 114° 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January06:2212:0117:4011 h 18 min53.5°
February06:1312:0417:5511 h 42 min62.9°
March05:5411:5718:0112 h 07 min73.7°
April05:3111:4918:0712 h 36 min85.3°
May05:1811:4718:1612 h 58 min86.4°
June05:1811:5218:2513 h 07 min83.1°
July05:2711:5618:2612 h 59 min86.1°
August05:3511:5318:1112 h 36 min85.5°
September05:3911:4317:4712 h 08 min74.1°
October05:4411:3517:2511 h 41 min62.7°
November05:5711:3617:1511 h 18 min53.5°
December06:1411:4817:2211 h 09 min50.0°

A year of daylight in Phong Điền

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 Phong Điền

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

12°collects the most energy over a year: 1255 kWh per kWp.

39°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 12°Best worst-month 39°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°123498%1.962.2×
12° year-round best1255100%2.191.9×
15°1253100%2.231.9×
17° = latitude1251100%2.261.8×
30°120596%2.381.6×
39° off-grid best114591%2.411.5×
45°109287%2.401.5×
60°92474%2.281.6×
70°79063%2.141.9×
90°53543%1.692.0×

A fixed array in Phong Điền produces the most over a year at 12°. The design month for an off-grid system is December: at 39° it makes 2.41 kWh per kWp a day, 10% more than at 12°, and costs 9% of the yearly total. Why steep panels win winter.

Off-grid solar in Phong Điền at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 12° (year-round best).

012345January: 2.60 (70°)2.6JanFebruary: 2.89 (70°)2.9FebMarch: 2.46 (70°)2.5MarApril: 2.10 (70°)2.1AprMay: 1.73 (70°)1.7MayJune: 1.53 (70°)1.5JunJuly: 1.55 (70°)1.6JulAugust: 1.89 (70°)1.9AugSeptember: 2.29 (70°)2.3SepOctober: 2.38 (70°)2.4OctNovember: 2.47 (70°)2.5NovDecember: 2.14 (70°)2.1Dec12°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 12°Mean temp.
January3.033.122.602.7020.2 °C
February3.953.482.893.4421.1 °C
March4.283.002.463.5523.2 °C
April4.962.612.103.9425.6 °C
May5.522.181.734.2227.2 °C
June5.471.951.534.1127.8 °C
July5.161.971.553.9127.6 °C
August4.932.371.893.8327.3 °C
September4.512.842.293.6326.6 °C
October3.692.932.383.0825.0 °C
November3.093.012.472.6923.4 °C
December2.482.592.142.1921.1 °C
Year4.25 avg2.66 avg790 kWh1255 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 770 Wp of panels at 70°, versus 540 Wp at 12°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Phong Điền

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.

2.4 mrow pitch at 70°

2.3 mrow pitch at 12°

Row spacing calculator

How Phong Điền compares in Vietnam

Against the other 306 places in Vietnam with climate data, for a fixed array at its best angle.

163rdof 307 places in Vietnam for sunshine: 4.26 peak sun hours a day on flat ground.

−5%solar energy a year compared with the average place in Vietnam: 1,255 against 1,320 kWh per kWp.

+22 mindaylight on the longest day, compared with Ho Chi Minh City: 13 h 07 min against 12 h 46 min.

12°best year-round tilt here; across Vietnam it runs from 9° in Vĩnh Châu to 21° in Dien Bien Phu.

Of the 307 places in Vietnam, Phú Quý gets the most sun (5.45 peak sun hours a day) and Thị Trấn Thất Khê and one other place the least (3.61); Phong Điền ranks 163rd. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.53 kWh a day here, against 1.53 kWh on average in Vietnam. The shortest day lasts 11 h 09 min, −21 min compared with Ho Chi Minh City.

The sunniest places in Vietnam

Solar forecast for Phong Điền, 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 Phong Điền

What is the best solar panel angle in Phong Điền?
For a fixed array facing south, the best year-round tilt in Phong Điền is 12°, worth about 1255 kWh per kWp a year. An off-grid system that has to get through December does better at about 39°.
What time is sunrise and sunset in Phong Điền today?
On 25 October 2026 the sun rises at 05:45 and sets at 17:23 local time (UTC+7), giving 11 h 38 min of daylight. Solar noon is at 11:34.
How many peak sun hours does Phong Điền get?
On a flat surface 4.3 hours a day averaged over the year, from 2.5 in December to 5.5 in May. Panels tilted at 70° receive 1.9 sun hours a day in June.
How high does the sun get in Phong Điền?
At solar noon the sun stands 83.1° above the horizon on the June solstice and 50.0° on the December solstice.
Is Phong Điền a good place for solar panels?
With 4.3 peak sun hours a day on flat ground, Phong Điền ranks 163rd of 307 places in Vietnam for sunshine. A 1 kWp array at the best angle (12°) makes about 1,255 kWh a year here, 5% less than the average place in Vietnam.

Places near Phong Điền

All places in Vietnam

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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.