Quang Ngai · Vietnam · 14.35° N · 108.01° E
Solar position in Kon Tum
Sun position, daylight and the best solar panel angle for Kon Tum — computed for 14.35° N, 108.01° E, 543 m above sea level.
The sun right now
Sun in Kon Tum today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:29 | sun 18° below horizon |
| Nautical dawn | 04:54 | 12° below |
| Civil dawn | 05:19 | 6° below |
| Sunrise | 05:41 | 102° ESE |
| Golden hour ends | 06:10 | sun 6° up |
| Solar noon | 11:31 | 63.6° high |
| Golden hour starts | 16:53 | sun 6° up |
| Sunset | 17:22 | 258° WSW |
| Civil dusk | 17:44 | 6° below |
| Nautical dusk | 18:09 | 12° below |
| Astronomical dusk | 18:34 | 18° below |
| Day length | 11 h 42 min | |
Sun path diagram for Kon Tum
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 80.9° at solar noon in Kon Tum; on the December solstice only 52.2°. 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.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 06:16 | 11:59 | 17:41 | 11 h 25 min | 55.8° |
| February | 06:09 | 12:01 | 17:54 | 11 h 45 min | 65.1° |
| March | 05:51 | 11:55 | 17:58 | 12 h 07 min | 75.9° |
| April | 05:31 | 11:46 | 18:02 | 12 h 32 min | 87.5° |
| May | 05:19 | 11:44 | 18:09 | 12 h 51 min | 84.2° |
| June | 05:20 | 11:49 | 18:19 | 12 h 59 min | 80.9° |
| July | 05:28 | 11:54 | 18:19 | 12 h 51 min | 83.9° |
| August | 05:35 | 11:51 | 18:07 | 12 h 32 min | 87.8° |
| September | 05:36 | 11:41 | 17:45 | 12 h 08 min | 76.4° |
| October | 05:40 | 11:32 | 17:24 | 11 h 45 min | 65.0° |
| November | 05:51 | 11:33 | 17:16 | 11 h 25 min | 55.7° |
| December | 06:07 | 11:45 | 17:24 | 11 h 17 min | 52.2° |
A year of daylight in Kon Tum
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Kon Tum
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
15°collects the most energy over a year: 1433 kWh per kWp.
10°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | August kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1396 | 97% | 3.52 | 1.5× |
| 10° off-grid best | 1429 | 100% | 3.46 | 1.3× |
| 14° = latitude | 1433 | 100% | 3.42 | 1.4× |
| 15° year-round best | 1433 | 100% | 3.40 | 1.4× |
| 30° | 1391 | 97% | 3.12 | 1.6× |
| 45° | 1274 | 89% | 2.68 | 1.8× |
| 60° | 1091 | 76% | 2.12 | 2.3× |
| 70° | 942 | 66% | 1.71 | 2.7× |
| 90° | 649 | 45% | 1.04 | 2.9× |
A fixed array in Kon Tum produces the most over a year at 15°. The design month for an off-grid system is August: at 10° it makes 3.46 kWh per kWp a day, 2% more than at 15°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Kon Tum at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 15° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 15° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.45 | 4.67 | 3.90 | 4.11 | 21.2 °C |
| February | 5.32 | 4.64 | 3.85 | 4.69 | 22.6 °C |
| March | 5.53 | 3.71 | 3.03 | 4.56 | 24.9 °C |
| April | 5.78 | 2.80 | 2.25 | 4.49 | 26.9 °C |
| May | 5.48 | 2.10 | 1.67 | 4.10 | 27.2 °C |
| June | 4.99 | 1.81 | 1.43 | 3.68 | 26.6 °C |
| July | 4.69 | 1.83 | 1.45 | 3.49 | 26.1 °C |
| August | 4.43 | 2.13 | 1.71 | 3.40 | 25.8 °C |
| September | 4.58 | 2.79 | 2.26 | 3.67 | 25.2 °C |
| October | 4.38 | 3.38 | 2.77 | 3.70 | 24.2 °C |
| November | 4.09 | 3.94 | 3.26 | 3.65 | 23.1 °C |
| December | 3.92 | 4.20 | 3.49 | 3.62 | 21.4 °C |
| Year | 4.80 avg | 3.16 avg | 942 kWh | 1433 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 820 Wp of panels at 70°, versus 350 Wp at 15°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Kon Tum
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.
2.3 mrow pitch at 70°
2.4 mrow pitch at 15°
How Kon Tum compares in Vietnam
Against the other 306 places in Vietnam with climate data, for a fixed array at its best angle.
140thof 307 places in Vietnam for sunshine: 4.80 peak sun hours a day on flat ground.
+8%solar energy a year compared with the average place in Vietnam: 1,432 against 1,320 kWh per kWp.
+13 mindaylight on the longest day, compared with Ho Chi Minh City: 12 h 59 min against 12 h 46 min.
15°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); Kon Tum ranks 140th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.43 kWh a day here, against 1.53 kWh on average in Vietnam. The shortest day lasts 11 h 17 min, −13 min compared with Ho Chi Minh City.
Solar forecast for Kon Tum, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Kon Tum
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Places near Kon Tum
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A free, live card for Kon Tum: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
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.