North Chungcheong · South Korea · 36.64° N · 127.49° E
Solar position in Cheongju-si
Sun position, daylight and the best solar panel angle for Cheongju-si — computed for 36.64° N, 127.49° E, 49 m above sea level.
The sun right now
Sun in Cheongju-si today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:19 | sun 18° below horizon |
| Nautical dawn | 05:49 | 12° below |
| Civil dawn | 06:19 | 6° below |
| Sunrise | 06:46 | 104° ESE |
| Golden hour ends | 07:21 | sun 6° up |
| Solar noon | 12:13 | 41.3° high |
| Golden hour starts | 17:05 | sun 6° up |
| Sunset | 17:41 | 255° WSW |
| Civil dusk | 18:07 | 6° below |
| Nautical dusk | 18:38 | 12° below |
| Astronomical dusk | 19:08 | 18° below |
| Day length | 10 h 55 min | |
Sun path diagram for Cheongju-si
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 76.8° at solar noon in Cheongju-si; on the December solstice only 30.0°. Sunrise swings from 60° ENE in June to 119° ESE in December — a 59° 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 | 07:39 | 12:41 | 17:43 | 10 h 04 min | 33.5° |
| February | 07:11 | 12:43 | 18:16 | 11 h 05 min | 42.8° |
| March | 06:32 | 12:37 | 18:42 | 12 h 09 min | 53.6° |
| April | 05:48 | 12:28 | 19:09 | 13 h 20 min | 65.2° |
| May | 05:18 | 12:26 | 19:34 | 14 h 16 min | 73.5° |
| June | 05:11 | 12:31 | 19:51 | 14 h 40 min | 76.8° |
| July | 05:27 | 12:36 | 19:45 | 14 h 18 min | 73.8° |
| August | 05:51 | 12:33 | 19:14 | 13 h 22 min | 65.5° |
| September | 06:16 | 12:23 | 18:29 | 12 h 12 min | 54.1° |
| October | 06:42 | 12:14 | 17:46 | 11 h 04 min | 42.7° |
| November | 07:13 | 12:15 | 17:17 | 10 h 04 min | 33.5° |
| December | 07:38 | 12:27 | 17:17 | 9 h 39 min | 30.0° |
A year of daylight in Cheongju-si
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 Cheongju-si
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
35°collects the most energy over a year: 1366 kWh per kWp.
30°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 | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1164 | 85% | 3.30 | 2.5× |
| 15° | 1297 | 95% | 3.31 | 1.8× |
| 30° off-grid best | 1361 | 100% | 3.15 | 1.4× |
| 35° year-round best | 1366 | 100% | 3.07 | 1.4× |
| 37° = latitude | 1365 | 100% | 3.03 | 1.4× |
| 45° | 1351 | 99% | 2.85 | 1.5× |
| 60° | 1267 | 93% | 2.42 | 1.7× |
| 70° | 1174 | 86% | 2.07 | 1.9× |
| 90° | 915 | 67% | 1.33 | 2.8× |
A fixed array in Cheongju-si produces the most over a year at 35°. The design month for an off-grid system is July: at 30° it makes 3.15 kWh per kWp a day, 3% more than at 35°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Cheongju-si at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 35° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 35° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.46 | 4.31 | 3.96 | 3.51 | -4.2 °C |
| February snow | 3.22 | 4.34 | 3.95 | 3.93 | -1.4 °C |
| March | 4.23 | 4.26 | 3.79 | 4.38 | 3.5 °C |
| April | 4.95 | 3.78 | 3.27 | 4.37 | 10.0 °C |
| May | 5.56 | 3.42 | 2.88 | 4.35 | 16.3 °C |
| June | 5.12 | 2.97 | 2.44 | 3.78 | 21.3 °C |
| July | 4.15 | 2.57 | 2.07 | 3.07 | 24.0 °C |
| August | 4.35 | 3.04 | 2.47 | 3.43 | 24.4 °C |
| September | 4.01 | 3.52 | 2.94 | 3.61 | 19.3 °C |
| October | 3.56 | 4.21 | 3.63 | 3.89 | 12.6 °C |
| November | 2.53 | 3.86 | 3.42 | 3.30 | 5.3 °C |
| December snow | 2.21 | 4.19 | 3.82 | 3.31 | -2.1 °C |
| Year | 3.86 avg | 3.70 avg | 1174 kWh | 1366 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 570 Wp of panels at 70°, versus 380 Wp at 35°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Cheongju-si
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.
4.4 mrow pitch at 70°
3.9 mrow pitch at 35°
How Cheongju-si compares in South Korea
Against the other 144 places in South Korea with climate data, for a fixed array at its best angle.
99thof 145 places in South Korea for sunshine, shared: 3.86 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in South Korea: 1,366 against 1,356 kWh per kWp.
−6 mindaylight on the longest day, compared with Seoul: 14 h 40 min against 14 h 46 min.
35°best year-round tilt here; across South Korea it runs from 27° in Seogwipo to 37° in Uijeongbu-si.
Of the 145 places in South Korea, Tongyeong gets the most sun (4.04 peak sun hours a day) and Kosong the least (3.76); Cheongju-si ranks joint 99th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 2.07 kWh a day here, against 2.12 kWh on average in South Korea. The shortest day lasts 9 h 39 min, +5 min compared with Seoul.
Solar forecast for Cheongju-si, 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 Cheongju-si
What is the best solar panel angle in Cheongju-si?
What time is sunrise and sunset in Cheongju-si today?
How many peak sun hours does Cheongju-si get?
How high does the sun get in Cheongju-si?
Is Cheongju-si a good place for solar panels?
Places near Cheongju-si
Put this on your site
A free, live card for Cheongju-si: 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.