Campania · Italy · 40.89° N · 14.32° E
Solar position in Arpino
Sun position, daylight and the best solar panel angle for Arpino — computed for 40.89° N, 14.32° E, 28 m above sea level.
The sun right now
Sun in Arpino today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:51 | sun 18° below horizon |
| Nautical dawn | 06:23 | 12° below |
| Civil dawn | 06:55 | 6° below |
| Sunrise | 07:23 | 105° ESE |
| Golden hour ends | 08:02 | sun 6° up |
| Solar noon | 12:46 | 37.3° high |
| Golden hour starts | 17:31 | sun 6° up |
| Sunset | 18:09 | 255° WSW |
| Civil dusk | 18:37 | 6° below |
| Nautical dusk | 19:09 | 12° below |
| Astronomical dusk | 19:41 | 18° below |
| Day length | 10 h 45 min | |
Sun path diagram for Arpino
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 72.6° at solar noon in Arpino; on the December solstice only 25.7°. Sunrise swings from 57° ENE in June to 121° ESE in December — a 64° 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 | 07:22 | 12:14 | 17:06 | 9 h 44 min | 29.3° |
| February | 06:48 | 12:16 | 17:44 | 10 h 55 min | 38.7° |
| March | 06:04 | 12:10 | 18:15 | 12 h 11 min | 49.5° |
| April | 06:15 | 13:01 | 19:48 | 13 h 33 min | 61.1° |
| May | 05:40 | 12:59 | 20:19 | 14 h 39 min | 69.4° |
| June | 05:31 | 13:04 | 20:37 | 15 h 07 min | 72.6° |
| July | 05:48 | 13:09 | 20:29 | 14 h 40 min | 69.5° |
| August | 06:18 | 13:05 | 19:52 | 13 h 34 min | 61.1° |
| September | 06:49 | 12:55 | 19:01 | 12 h 13 min | 49.7° |
| October | 07:20 | 12:47 | 18:13 | 10 h 53 min | 38.3° |
| November | 06:56 | 11:48 | 16:40 | 9 h 43 min | 29.2° |
| December | 07:23 | 12:00 | 16:37 | 9 h 14 min | 25.7° |
A year of daylight in Arpino
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 Arpino
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
33°collects the most energy over a year: 1517 kWh per kWp.
65°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° | 1309 | 86% | 1.30 | 4.6× |
| 15° | 1455 | 96% | 1.87 | 3.2× |
| 30° | 1516 | 100% | 2.33 | 2.4× |
| 33° year-round best | 1517 | 100% | 2.40 | 2.3× |
| 41° = latitude | 1504 | 99% | 2.57 | 2.0× |
| 45° | 1488 | 98% | 2.64 | 1.9× |
| 60° | 1374 | 91% | 2.78 | 1.6× |
| 65° off-grid best | 1319 | 87% | 2.79 | 1.5× |
| 70° | 1255 | 83% | 2.78 | 1.4× |
| 90° | 933 | 61% | 2.54 | 1.7× |
A fixed array in Arpino produces the most over a year at 33°. The design month for an off-grid system is December: at 65° it makes 2.79 kWh per kWp a day, 16% more than at 33°, and costs 13% of the yearly total. Why steep panels win winter.
Off-grid solar in Arpino at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 33° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 33° | Mean temp. |
|---|---|---|---|---|---|
| January | 1.85 | 3.32 | 2.90 | 2.58 | 8.5 °C |
| February | 2.67 | 3.77 | 3.29 | 3.23 | 8.6 °C |
| March | 3.89 | 4.24 | 3.67 | 4.07 | 10.6 °C |
| April | 5.22 | 4.31 | 3.69 | 4.75 | 13.5 °C |
| May | 6.39 | 4.15 | 3.49 | 5.18 | 17.3 °C |
| June | 7.27 | 4.06 | 3.35 | 5.46 | 21.9 °C |
| July | 7.41 | 4.27 | 3.49 | 5.58 | 25.0 °C |
| August | 6.51 | 4.77 | 3.90 | 5.42 | 25.3 °C |
| September | 4.78 | 4.76 | 3.96 | 4.62 | 21.3 °C |
| October | 3.35 | 4.45 | 3.76 | 3.81 | 17.7 °C |
| November | 2.09 | 3.48 | 2.98 | 2.73 | 13.7 °C |
| December | 1.65 | 3.20 | 2.78 | 2.40 | 9.9 °C |
| Year | 4.43 avg | 4.06 avg | 1255 kWh | 1517 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 420 Wp of panels at 70°, versus 490 Wp at 33°. The steep array is 14% smaller for the same winter. Size your own system.
Row spacing in Arpino
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.
5.2 mrow pitch at 70°
4.3 mrow pitch at 33°
How Arpino compares in Italy
Against the other 596 places in Italy with climate data, for a fixed array at its best angle.
167thof 597 places in Italy for sunshine, shared: 4.43 peak sun hours a day on flat ground.
+5%solar energy a year compared with the average place in Italy: 1,518 against 1,452 kWh per kWp.
−7 mindaylight on the longest day, compared with Rome: 15 h 07 min against 15 h 14 min.
33°best year-round tilt here; across Italy it runs from 30° in Palermo to 42° in Bolzano.
Of the 597 places in Italy, Pozzallo and one other place get the most sun (4.91 peak sun hours a day) and Bressanone the least (3.51); Arpino ranks joint 167th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.78 kWh a day here, against 2.63 kWh on average in Italy. The shortest day lasts 9 h 14 min, +6 min compared with Rome.
Solar forecast for Arpino, 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 Arpino
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Places near Arpino
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A free, live card for Arpino: 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.