Esch-sur-Alzette · Luxembourg · 49.48° N · 6.09° E
Solar position in Dudelange
Sun position, daylight and the best solar panel angle for Dudelange — computed for 49.48° N, 6.09° E, 295 m above sea level.
The sun right now
Sun in Dudelange today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:23 | sun 18° below horizon |
| Nautical dawn | 07:00 | 12° below |
| Civil dawn | 07:38 | 6° below |
| Sunrise | 08:10 | 107° ESE |
| Golden hour ends | 08:56 | sun 6° up |
| Solar noon | 13:19 | 28.7° high |
| Golden hour starts | 17:42 | sun 6° up |
| Sunset | 18:28 | 252° WSW |
| Civil dusk | 19:00 | 6° below |
| Nautical dusk | 19:38 | 12° below |
| Astronomical dusk | 20:15 | 18° below |
| Day length | 10 h 17 min | |
Sun path diagram for Dudelange
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 64.0° at solar noon in Dudelange; on the December solstice only 17.1°. Sunrise swings from 51° NE in June to 127° SE in December — a 76° 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 | 08:21 | 12:47 | 17:13 | 8 h 52 min | 20.7° |
| February | 07:34 | 12:49 | 18:05 | 10 h 31 min | 30.1° |
| March | 06:36 | 12:43 | 18:49 | 12 h 13 min | 40.9° |
| April | 06:32 | 13:34 | 20:37 | 14 h 05 min | 52.5° |
| May | 05:44 | 13:32 | 21:20 | 15 h 37 min | 60.8° |
| June | 05:28 | 13:37 | 21:45 | 16 h 17 min | 64.0° |
| July | 05:52 | 13:42 | 21:31 | 15 h 39 min | 60.9° |
| August | 06:35 | 13:38 | 20:41 | 14 h 06 min | 52.5° |
| September | 07:20 | 13:28 | 19:36 | 12 h 16 min | 41.1° |
| October | 08:06 | 13:19 | 18:33 | 10 h 27 min | 29.8° |
| November | 07:55 | 12:21 | 16:46 | 8 h 51 min | 20.6° |
| December | 08:29 | 12:33 | 16:38 | 8 h 09 min | 17.1° |
A year of daylight in Dudelange
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 Dudelange
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
38°collects the most energy over a year: 1135 kWh per kWp.
70°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 | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 942 | 83% | 0.51 | 9.0× |
| 15° | 1064 | 94% | 0.80 | 6.0× |
| 30° | 1127 | 99% | 1.03 | 4.5× |
| 38° year-round best | 1135 | 100% | 1.13 | 4.0× |
| 45° | 1128 | 99% | 1.21 | 3.6× |
| 49° = latitude | 1117 | 98% | 1.24 | 3.4× |
| 60° | 1066 | 94% | 1.30 | 3.0× |
| 70° off-grid best | 992 | 87% | 1.32 | 2.7× |
| 90° | 779 | 69% | 1.25 | 2.2× |
A fixed array in Dudelange produces the most over a year at 38°. The design month for an off-grid system is December: at 70° it makes 1.32 kWh per kWp a day, 17% more than at 38°, and costs 13% of the yearly total. Why steep panels win winter.
Off-grid solar in Dudelange at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 38° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 38° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 0.86 | 1.77 | 1.57 | 1.36 | 0.3 °C |
| February | 1.60 | 2.55 | 2.28 | 2.17 | 1.1 °C |
| March | 2.85 | 3.55 | 3.14 | 3.30 | 4.4 °C |
| April | 4.38 | 4.14 | 3.61 | 4.27 | 8.7 °C |
| May | 5.13 | 3.91 | 3.35 | 4.38 | 12.7 °C |
| June | 5.65 | 3.91 | 3.29 | 4.52 | 16.6 °C |
| July | 5.48 | 3.94 | 3.29 | 4.44 | 18.9 °C |
| August | 4.59 | 3.92 | 3.28 | 4.06 | 18.4 °C |
| September | 3.53 | 3.97 | 3.39 | 3.72 | 14.3 °C |
| October | 2.03 | 2.93 | 2.54 | 2.51 | 9.7 °C |
| November | 0.99 | 1.78 | 1.56 | 1.42 | 4.9 °C |
| December | 0.68 | 1.50 | 1.32 | 1.13 | 1.3 °C |
| Year | 3.15 avg | 3.16 avg | 992 kWh | 1135 kWh |
Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 890 Wp of panels at 70°, versus 1,040 Wp at 38°. The steep array is 14% smaller for the same winter. Size your own system.
Row spacing in Dudelange
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.
8.3 mrow pitch at 70°
6.5 mrow pitch at 38°
How Dudelange compares in Luxembourg
Against the other 2 places in Luxembourg with climate data, for a fixed array at its best angle.
1stof 3 places in Luxembourg for sunshine, shared: 3.15 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Luxembourg: 1,135 against 1,133 kWh per kWp.
−1 mindaylight on the longest day, compared with Luxembourg: 16 h 17 min against 16 h 18 min.
38°best year-round tilt here, the same everywhere in Luxembourg.
Dudelange shares the top spot for sunshine among the 3 places in Luxembourg (3.15 peak sun hours a day); the least sunny is Luxembourg with 3.14. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.32 kWh a day here, against 1.32 kWh on average in Luxembourg. The shortest day lasts 8 h 09 min, +1 min compared with Luxembourg.
Solar forecast for Dudelange, 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 Dudelange
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A free, live card for Dudelange: 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.