Gyeonggi-do · South Korea · 37.62° N · 126.71° E
Solar position in Gimpo-si
Sun position, daylight and the best solar panel angle for Gimpo-si — computed for 37.62° N, 126.71° E, 21 m above sea level.
The sun right now
Sun in Gimpo-si today
Sunday, 25 October 2026 · local time UTC+9
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:22 | sun 18° below horizon |
| Nautical dawn | 05:53 | 12° below |
| Civil dawn | 06:23 | 6° below |
| Sunrise | 06:50 | 105° ESE |
| Golden hour ends | 07:26 | sun 6° up |
| Solar noon | 12:17 | 40.3° high |
| Golden hour starts | 17:07 | sun 6° up |
| Sunset | 17:43 | 255° WSW |
| Civil dusk | 18:10 | 6° below |
| Nautical dusk | 18:40 | 12° below |
| Astronomical dusk | 19:11 | 18° below |
| Day length | 10 h 53 min | |
Sun path diagram for Gimpo-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 75.8° at solar noon in Gimpo-si; on the December solstice only 29.0°. Sunrise swings from 59° ENE in June to 119° ESE in December — a 60° 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 | 07:44 | 12:44 | 17:44 | 10 h 00 min | 32.5° |
| February | 07:15 | 12:46 | 18:18 | 11 h 02 min | 41.8° |
| March | 06:35 | 12:40 | 18:45 | 12 h 10 min | 52.6° |
| April | 05:50 | 12:32 | 19:13 | 13 h 23 min | 64.2° |
| May | 05:19 | 12:29 | 19:40 | 14 h 21 min | 72.6° |
| June | 05:11 | 12:34 | 19:57 | 14 h 46 min | 75.8° |
| July | 05:27 | 12:39 | 19:50 | 14 h 23 min | 72.9° |
| August | 05:53 | 12:36 | 19:18 | 13 h 25 min | 64.5° |
| September | 06:19 | 12:26 | 18:32 | 12 h 13 min | 53.1° |
| October | 06:46 | 12:17 | 17:48 | 11 h 02 min | 41.7° |
| November | 07:18 | 12:18 | 17:18 | 10 h 00 min | 32.5° |
| December | 07:44 | 12:31 | 17:17 | 9 h 34 min | 29.0° |
A year of daylight in Gimpo-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 Gimpo-si
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
36°collects the most energy over a year: 1374 kWh per kWp.
34°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° | 1167 | 85% | 3.30 | 2.6× |
| 15° | 1304 | 95% | 3.31 | 1.9× |
| 30° | 1369 | 100% | 3.17 | 1.5× |
| 34° off-grid best | 1374 | 100% | 3.10 | 1.4× |
| 36° year-round best | 1374 | 100% | 3.07 | 1.5× |
| 38° = latitude | 1373 | 100% | 3.03 | 1.5× |
| 45° | 1359 | 99% | 2.87 | 1.6× |
| 60° | 1275 | 93% | 2.43 | 1.7× |
| 70° | 1180 | 86% | 2.09 | 1.9× |
| 90° | 917 | 67% | 1.34 | 2.7× |
A fixed array in Gimpo-si produces the most over a year at 36°. The design month for an off-grid system is July: at 34° it makes 3.10 kWh per kWp a day, 1% more than at 36°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Gimpo-si at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 36° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 36° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 2.42 | 4.26 | 3.89 | 3.47 | -3.3 °C |
| February snow | 3.19 | 4.39 | 3.99 | 3.95 | -1.0 °C |
| March | 4.26 | 4.40 | 3.92 | 4.48 | 3.4 °C |
| April | 4.99 | 3.88 | 3.37 | 4.44 | 9.3 °C |
| May | 5.54 | 3.46 | 2.92 | 4.35 | 15.3 °C |
| June | 5.22 | 3.04 | 2.50 | 3.86 | 20.3 °C |
| July | 4.14 | 2.58 | 2.09 | 3.07 | 23.5 °C |
| August | 4.42 | 3.13 | 2.55 | 3.50 | 24.5 °C |
| September | 4.14 | 3.74 | 3.11 | 3.78 | 20.3 °C |
| October | 3.57 | 4.34 | 3.72 | 3.96 | 14.0 °C |
| November | 2.44 | 3.75 | 3.30 | 3.19 | 6.6 °C |
| December snow | 2.13 | 3.86 | 3.50 | 3.15 | -0.9 °C |
| Year | 3.88 avg | 3.73 avg | 1180 kWh | 1374 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 36°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Gimpo-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.
4.6 mrow pitch at 70°
4.1 mrow pitch at 36°
How Gimpo-si compares in South Korea
Against the other 144 places in South Korea with climate data, for a fixed array at its best angle.
78thof 145 places in South Korea for sunshine, shared: 3.88 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in South Korea: 1,374 against 1,356 kWh per kWp.
±0 mindaylight on the longest day, compared with Seoul: 14 h 46 min against 14 h 46 min.
36°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); Gimpo-si ranks joint 78th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 2.09 kWh a day here, against 2.12 kWh on average in South Korea. The shortest day lasts 9 h 34 min, ±0 min compared with Seoul.
Solar forecast for Gimpo-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 Gimpo-si
What is the best solar panel angle in Gimpo-si?
What time is sunrise and sunset in Gimpo-si today?
How many peak sun hours does Gimpo-si get?
How high does the sun get in Gimpo-si?
Is Gimpo-si a good place for solar panels?
Places near Gimpo-si
Put this on your site
A free, live card for Gimpo-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.