Solarposition.org

Can Tho City · Vietnam · 10.22° N · 105.40° E

Solar position in Vĩnh Thạnh

Sun position, daylight and the best solar panel angle for Vĩnh Thạnh — computed for 10.22° N, 105.40° E, 3 m above sea level.

Sunrise today05:47102° ESE
Sunset today17:37258° WSW
Best panel angle11°year-round, facing south
Off-grid angle1°best for the darkest month

The sun right now

Azimuth180.0°
Elevation67.7°
At solar noon, 11:42Open on the sun map

Sun in Vĩnh Thạnh today

Sunday, 25 October 2026 · local time UTC+7

EventTimeDirection / height
Astronomical dawn04:36sun 18° below horizon
Nautical dawn05:0112° below
Civil dawn05:266° below
Sunrise05:47102° ESE
Golden hour ends06:16sun 6° up
Solar noon11:4267.7° high
Golden hour starts17:08sun 6° up
Sunset17:37258° WSW
Civil dusk17:586° below
Nautical dusk18:2312° below
Astronomical dusk18:4818° below
Day length11 h 49 min

Sun path diagram for Vĩnh Thạnh

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 76.8° at solar noon in Vĩnh Thạnh; on the December solstice only 56.4°. 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
January06:2012:0917:5811 h 37 min59.9°
February06:1612:1218:0711 h 51 min69.2°
March06:0212:0518:0912 h 07 min80.0°
April05:4511:5718:0912 h 24 min88.4°
May05:3611:5418:1312 h 38 min80.0°
June05:3812:0018:2112 h 43 min76.8°
July05:4512:0418:2312 h 38 min79.8°
August05:4912:0118:1312 h 25 min88.1°
September05:4711:5117:5512 h 08 min80.5°
October05:4711:4317:3811 h 51 min69.1°
November05:5511:4417:3211 h 37 min59.9°
December06:1011:5617:4211 h 32 min56.4°

A year of daylight in Vĩnh Thạnh

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 Vĩnh Thạnh

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

11°collects the most energy over a year: 1478 kWh per kWp.

1°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 11°Best worst-month 1°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearJuly kWh/kWp/dayBest ÷ worst month
0°145899%3.741.2×
1° off-grid best146199%3.731.2×
10° = latitude1478100%3.581.3×
11° year-round best1478100%3.561.3×
15°1475100%3.471.3×
30°141296%3.031.6×
45°127586%2.441.9×
60°107473%1.772.5×
70°91562%1.343.0×
90°62943%1.072.7×

A fixed array in Vĩnh Thạnh produces the most over a year at 11°. The design month for an off-grid system is July: at 1° it makes 3.73 kWh per kWp a day, 5% more than at 11°, and costs 1% of the yearly total. Why steep panels win winter.

Off-grid solar in Vĩnh Thạnh at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 11° (year-round best).

012345January: 3.85 (70°)3.8JanFebruary: 3.56 (70°)3.6FebMarch: 2.90 (70°)2.9MarApril: 2.02 (70°)2.0AprMay: 1.43 (70°)1.4MayJune: 1.27 (70°)1.3JunJuly: 1.34 (70°)1.3JulAugust: 1.64 (70°)1.6AugSeptember: 2.15 (70°)2.2SepOctober: 2.75 (70°)2.8OctNovember: 3.45 (70°)3.5NovDecember: 3.79 (70°)3.8Dec11°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 11°Mean temp.
January4.984.713.854.2826.3 °C
February5.564.403.564.6227.9 °C
March5.833.612.904.6529.6 °C
April5.862.552.024.4930.5 °C
May5.271.831.433.9529.3 °C
June4.911.631.273.6627.8 °C
July4.731.711.343.5627.2 °C
August4.782.071.643.6827.0 °C
September4.712.682.153.7426.9 °C
October4.733.402.753.8826.8 °C
November4.784.243.454.0626.5 °C
December4.714.633.794.0825.9 °C
Year5.07 avg3.11 avg915 kWh1478 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 330 Wp at 11°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Vĩnh Thạnh

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.

2.1 mrow pitch at 70°

2.2 mrow pitch at 11°

Row spacing calculator

How Vĩnh Thạnh compares in Vietnam

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

89thof 307 places in Vietnam for sunshine, shared: 5.07 peak sun hours a day on flat ground.

+12%solar energy a year compared with the average place in Vietnam: 1,478 against 1,320 kWh per kWp.

−2 mindaylight on the longest day, compared with Ho Chi Minh City: 12 h 43 min against 12 h 46 min.

11°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); Vĩnh Thạnh ranks joint 89th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.27 kWh a day here, against 1.53 kWh on average in Vietnam. The shortest day lasts 11 h 32 min, +2 min compared with Ho Chi Minh City.

The sunniest places in Vietnam

Solar forecast for Vĩnh Thạnh, 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 Vĩnh Thạnh

What is the best solar panel angle in Vĩnh Thạnh?
For a fixed array facing south, the best year-round tilt in Vĩnh Thạnh is 11°, worth about 1478 kWh per kWp a year. An off-grid system that has to get through July does better at about 1°.
What time is sunrise and sunset in Vĩnh Thạnh today?
On 25 October 2026 the sun rises at 05:47 and sets at 17:37 local time (UTC+7), giving 11 h 49 min of daylight. Solar noon is at 11:42.
How many peak sun hours does Vĩnh Thạnh get?
On a flat surface 5.1 hours a day averaged over the year, from 4.7 in December to 5.9 in April. Panels tilted at 70° receive 1.6 sun hours a day in June.
How high does the sun get in Vĩnh Thạnh?
At solar noon the sun stands 76.8° above the horizon on the June solstice and 56.4° on the December solstice.
Is Vĩnh Thạnh a good place for solar panels?
With 5.1 peak sun hours a day on flat ground, Vĩnh Thạnh ranks joint 89th of 307 places in Vietnam for sunshine. A 1 kWp array at the best angle (11°) makes about 1,478 kWh a year here, 12% more than the average place in Vietnam.

Places near Vĩnh Thạnh

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.