Solarposition.org

Nghệ An Province · Vietnam · 18.92° N · 104.97° E

Solar position in Thái Hòa

Sun position, daylight and the best solar panel angle for Thái Hòa — computed for 18.92° N, 104.97° E, 64 m above sea level.

Sunrise today05:57102° ESE
Sunset today17:30257° WSW
Best panel angle16°year-round, facing south
Off-grid angle32°best for the darkest month

The sun right now

Azimuth180.0°
Elevation59.0°
At solar noon, 11:44Open on the sun map

Sun in Thái Hòa today

Sunday, 25 October 2026 · local time UTC+7

EventTimeDirection / height
Astronomical dawn04:43sun 18° below horizon
Nautical dawn05:0912° below
Civil dawn05:356° below
Sunrise05:57102° ESE
Golden hour ends06:27sun 6° up
Solar noon11:4459.0° high
Golden hour starts17:01sun 6° up
Sunset17:30257° WSW
Civil dusk17:536° below
Nautical dusk18:1812° below
Astronomical dusk18:4418° below
Day length11 h 33 min

Sun path diagram for Thái Hòa

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 85.5° at solar noon in Thái Hòa; on the December solstice only 47.7°. Sunrise swings from 65° ENE in June to 115° 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
January06:3612:1117:4611 h 11 min51.2°
February06:2412:1318:0211 h 38 min60.5°
March06:0312:0718:1112 h 08 min71.3°
April05:3811:5818:1912 h 40 min82.9°
May05:2411:5618:2913 h 06 min88.7°
June05:2312:0118:3913 h 16 min85.5°
July05:3312:0618:3913 h 06 min88.5°
August05:4212:0318:2312 h 41 min83.2°
September05:4811:5317:5712 h 09 min71.8°
October05:5511:4417:3311 h 37 min60.4°
November06:1011:4517:2111 h 11 min51.2°
December06:2811:5817:2711 h 00 min47.7°

A year of daylight in Thái Hòa

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 Thái Hòa

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

16°collects the most energy over a year: 1236 kWh per kWp.

32°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 16°Best worst-month 32°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°119797%2.451.7×
15°1236100%2.861.4×
16° year-round best1236100%2.881.4×
19° = latitude1235100%2.941.3×
30°120998%3.101.1×
32° off-grid best120197%3.121.1×
45°111890%3.171.3×
60°97179%3.061.6×
70°84769%2.881.9×
90°59148%2.322.2×

A fixed array in Thái Hòa produces the most over a year at 16°. The design month for an off-grid system is December: at 32° it makes 3.12 kWh per kWp a day, 8% more than at 16°, and costs 3% of the yearly total. Why steep panels win winter.

Off-grid solar in Thái Hòa at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 16° (year-round best).

012345January: 2.90 (70°)2.9JanFebruary: 2.79 (70°)2.8FebMarch: 2.34 (70°)2.3MarApril: 2.14 (70°)2.1AprMay: 1.84 (70°)1.8MayJune: 1.65 (70°)1.6JunJuly: 1.64 (70°)1.6JulAugust: 1.86 (70°)1.9AugSeptember: 2.30 (70°)2.3SepOctober: 2.52 (70°)2.5OctNovember: 3.03 (70°)3.0NovDecember: 2.88 (70°)2.9Dec16°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 16°Mean temp.
January3.163.422.902.9916.2 °C
February3.693.332.793.3018.7 °C
March3.922.852.343.2821.8 °C
April4.692.652.143.7225.1 °C
May5.132.311.843.9026.7 °C
June4.972.081.653.7127.0 °C
July4.732.061.643.5526.7 °C
August4.402.331.863.4126.1 °C
September4.302.832.303.4925.2 °C
October3.743.072.523.2022.9 °C
November3.523.633.033.2420.1 °C
December3.023.402.882.8816.5 °C
Year4.11 avg2.83 avg847 kWh1236 kWh

Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 720 Wp of panels at 70°, versus 410 Wp at 16°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Thái Hòa

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 16°

Row spacing calculator

How Thái Hòa compares in Vietnam

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

167thof 307 places in Vietnam for sunshine, shared: 4.11 peak sun hours a day on flat ground.

−6%solar energy a year compared with the average place in Vietnam: 1,236 against 1,320 kWh per kWp.

+31 mindaylight on the longest day, compared with Ho Chi Minh City: 13 h 16 min against 12 h 46 min.

16°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); Thái Hòa ranks joint 167th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 1.64 kWh a day here, against 1.53 kWh on average in Vietnam. The shortest day lasts 11 h 00 min, −30 min compared with Ho Chi Minh City.

The sunniest places in Vietnam

Solar forecast for Thái Hòa, 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 Thái Hòa

What is the best solar panel angle in Thái Hòa?
For a fixed array facing south, the best year-round tilt in Thái Hòa is 16°, worth about 1236 kWh per kWp a year. An off-grid system that has to get through December does better at about 32°.
What time is sunrise and sunset in Thái Hòa today?
On 25 October 2026 the sun rises at 05:57 and sets at 17:30 local time (UTC+7), giving 11 h 33 min of daylight. Solar noon is at 11:44.
How many peak sun hours does Thái Hòa get?
On a flat surface 4.1 hours a day averaged over the year, from 3.0 in December to 5.1 in May. Panels tilted at 70° receive 2.1 sun hours a day in July.
How high does the sun get in Thái Hòa?
At solar noon the sun stands 85.5° above the horizon on the June solstice and 47.7° on the December solstice.
Is Thái Hòa a good place for solar panels?
With 4.1 peak sun hours a day on flat ground, Thái Hòa ranks joint 167th of 307 places in Vietnam for sunshine. A 1 kWp array at the best angle (16°) makes about 1,236 kWh a year here, 6% less than the average place in Vietnam.

Places near Thái Hòa

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.