Solarposition.org

Tuyen Quang · Vietnam · 22.82° N · 104.98° E

Solar position in Hà Giang

Sun position, daylight and the best solar panel angle for Hà Giang — computed for 22.82° N, 104.98° E, 107 m above sea level.

Sunrise today06:01103° ESE
Sunset today17:27257° WSW
Best panel angle18°year-round, facing south
Off-grid angle41°best for the darkest month

The sun right now

Azimuth180.0°
Elevation55.1°
At solar noon, 11:44Open on the sun map

Sun in Hà Giang today

Sunday, 25 October 2026 · local time UTC+7

EventTimeDirection / height
Astronomical dawn04:45sun 18° below horizon
Nautical dawn05:1112° below
Civil dawn05:386° below
Sunrise06:01103° ESE
Golden hour ends06:31sun 6° up
Solar noon11:4455.1° high
Golden hour starts16:56sun 6° up
Sunset17:27257° WSW
Civil dusk17:496° below
Nautical dusk18:1612° below
Astronomical dusk18:4218° below
Day length11 h 26 min

Sun path diagram for Hà Giang

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 89.4° at solar noon in Hà Giang; on the December solstice only 43.8°. Sunrise swings from 64° ENE in June to 115° ESE in December — a 51° 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
January06:4212:1117:4010 h 58 min47.3°
February06:2812:1317:5911 h 31 min56.6°
March06:0312:0718:1112 h 08 min67.4°
April05:3511:5818:2212 h 48 min79.0°
May05:1711:5618:3613 h 19 min87.4°
June05:1512:0118:4713 h 32 min89.4°
July05:2612:0618:4613 h 20 min87.6°
August05:3812:0318:2712 h 49 min79.3°
September05:4811:5317:5712 h 09 min67.9°
October05:5911:4417:3011 h 31 min56.5°
November06:1611:4517:1410 h 58 min47.3°
December06:3511:5717:2010 h 44 min43.8°

A year of daylight in Hà Giang

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 Hà Giang

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

18°collects the most energy over a year: 1142 kWh per kWp.

41°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 18°Best worst-month 41°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearJanuary kWh/kWp/dayBest ÷ worst month
0°110096%1.902.0×
15°1141100%2.171.7×
18° year-round best1142100%2.211.7×
23° = latitude1139100%2.271.6×
30°112498%2.331.5×
41° off-grid best107594%2.361.4×
45°104992%2.361.4×
60°92381%2.261.4×
70°81671%2.121.5×
90°57550%1.712.0×

A fixed array in Hà Giang produces the most over a year at 18°. The design month for an off-grid system is January: at 41° it makes 2.36 kWh per kWp a day, 7% more than at 18°, and costs 6% of the yearly total. Why steep panels win winter.

Off-grid solar in Hà Giang at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 18° (year-round best).

01234January: 2.12 (70°)2.1JanFebruary: 2.39 (70°)2.4FebMarch: 2.22 (70°)2.2MarApril: 2.19 (70°)2.2AprMay: 1.97 (70°)2.0MayJune: 1.85 (70°)1.8JunJuly: 1.89 (70°)1.9JulAugust: 2.14 (70°)2.1AugSeptember: 2.46 (70°)2.5SepOctober: 2.35 (70°)2.4OctNovember: 2.86 (70°)2.9NovDecember: 2.40 (70°)2.4Dec18°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 18°Mean temp.
January2.332.482.122.2111.5 °C
February3.012.812.392.7514.3 °C
March3.472.662.222.9717.9 °C
April4.322.662.193.4921.6 °C
May4.832.441.973.7223.9 °C
June4.602.301.853.4924.8 °C
July4.612.351.893.5224.8 °C
August4.592.642.143.6124.5 °C
September4.283.002.463.5322.9 °C
October3.312.842.352.8919.9 °C
November3.113.382.862.9716.3 °C
December2.452.802.402.3912.0 °C
Year3.75 avg2.69 avg816 kWh1142 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 640 Wp of panels at 70°, versus 530 Wp at 18°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Hà Giang

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.

2.9 mrow pitch at 70°

2.6 mrow pitch at 18°

Row spacing calculator

How Hà Giang compares in Vietnam

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

285thof 307 places in Vietnam for sunshine, shared: 3.75 peak sun hours a day on flat ground.

−14%solar energy a year compared with the average place in Vietnam: 1,142 against 1,320 kWh per kWp.

+47 mindaylight on the longest day, compared with Ho Chi Minh City: 13 h 32 min against 12 h 46 min.

18°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); Hà Giang ranks joint 285th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.85 kWh a day here, against 1.53 kWh on average in Vietnam. The shortest day lasts 10 h 44 min, −45 min compared with Ho Chi Minh City.

The sunniest places in Vietnam

Solar forecast for Hà Giang, 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 Hà Giang

What is the best solar panel angle in Hà Giang?
For a fixed array facing south, the best year-round tilt in Hà Giang is 18°, worth about 1142 kWh per kWp a year. An off-grid system that has to get through January does better at about 41°.
What time is sunrise and sunset in Hà Giang today?
On 25 October 2026 the sun rises at 06:01 and sets at 17:27 local time (UTC+7), giving 11 h 26 min of daylight. Solar noon is at 11:44.
How many peak sun hours does Hà Giang get?
On a flat surface 3.7 hours a day averaged over the year, from 2.3 in January to 4.8 in May. Panels tilted at 70° receive 2.3 sun hours a day in June.
How high does the sun get in Hà Giang?
At solar noon the sun stands 89.4° above the horizon on the June solstice and 43.8° on the December solstice.
Is Hà Giang a good place for solar panels?
With 3.7 peak sun hours a day on flat ground, Hà Giang ranks joint 285th of 307 places in Vietnam for sunshine. A 1 kWp array at the best angle (18°) makes about 1,142 kWh a year here, 14% less than the average place in Vietnam.

Places near Hà Giang

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.