Epirus · Greece · 39.66° N · 20.85° E
Solar position in Ioánnina
Sun position, daylight and the best solar panel angle for Ioánnina — computed for 39.66° N, 20.85° E, 468 m above sea level.
The sun right now
Sun in Ioánnina today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:25 | sun 18° below horizon |
| Nautical dawn | 06:57 | 12° below |
| Civil dawn | 07:28 | 6° below |
| Sunrise | 07:56 | 105° ESE |
| Golden hour ends | 08:33 | sun 6° up |
| Solar noon | 13:20 | 38.5° high |
| Golden hour starts | 18:07 | sun 6° up |
| Sunset | 18:44 | 255° WSW |
| Civil dusk | 19:12 | 6° below |
| Nautical dusk | 19:43 | 12° below |
| Astronomical dusk | 20:15 | 18° below |
| Day length | 10 h 49 min | |
Sun path diagram for Ioánnina
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 73.8° at solar noon in Ioánnina; on the December solstice only 26.9°. Sunrise swings from 58° ENE in June to 120° ESE in December — a 62° 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 | 07:52 | 12:48 | 17:43 | 9 h 50 min | 30.5° |
| February | 07:21 | 12:50 | 18:19 | 10 h 58 min | 39.9° |
| March | 06:38 | 12:43 | 18:49 | 12 h 11 min | 50.7° |
| April | 06:50 | 13:35 | 20:20 | 13 h 30 min | 62.3° |
| May | 06:17 | 13:33 | 20:49 | 14 h 32 min | 70.6° |
| June | 06:09 | 13:38 | 21:07 | 14 h 59 min | 73.8° |
| July | 06:26 | 13:42 | 20:59 | 14 h 34 min | 70.8° |
| August | 06:54 | 13:39 | 20:24 | 13 h 30 min | 62.4° |
| September | 07:23 | 13:29 | 19:35 | 12 h 12 min | 51.0° |
| October | 07:52 | 13:21 | 18:49 | 10 h 56 min | 39.6° |
| November | 07:27 | 12:22 | 17:17 | 9 h 50 min | 30.4° |
| December | 07:53 | 12:34 | 17:15 | 9 h 22 min | 26.9° |
A year of daylight in Ioánnina
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 Ioánnina
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
32°collects the most energy over a year: 1518 kWh per kWp.
64°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° | 1315 | 87% | 1.37 | 4.3× |
| 15° | 1459 | 96% | 1.96 | 3.0× |
| 30° | 1516 | 100% | 2.43 | 2.3× |
| 32° year-round best | 1518 | 100% | 2.49 | 2.2× |
| 40° = latitude | 1506 | 99% | 2.66 | 2.0× |
| 45° | 1486 | 98% | 2.75 | 1.8× |
| 60° | 1370 | 90% | 2.89 | 1.5× |
| 64° off-grid best | 1325 | 87% | 2.90 | 1.4× |
| 70° | 1249 | 82% | 2.88 | 1.4× |
| 90° | 925 | 61% | 2.62 | 1.8× |
A fixed array in Ioánnina produces the most over a year at 32°. The design month for an off-grid system is December: at 64° it makes 2.90 kWh per kWp a day, 17% more than at 32°, and costs 13% of the yearly total. Why steep panels win winter.
Off-grid solar in Ioánnina at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 32° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 32° | Mean temp. |
|---|---|---|---|---|---|
| January | 1.96 | 3.46 | 3.06 | 2.72 | 6.1 °C |
| February | 2.70 | 3.70 | 3.26 | 3.22 | 6.8 °C |
| March | 3.88 | 4.15 | 3.61 | 4.04 | 9.4 °C |
| April | 5.10 | 4.10 | 3.52 | 4.59 | 12.8 °C |
| May | 6.22 | 3.96 | 3.33 | 5.01 | 17.3 °C |
| June | 7.14 | 3.90 | 3.22 | 5.34 | 22.2 °C |
| July | 7.39 | 4.16 | 3.39 | 5.54 | 25.4 °C |
| August | 6.55 | 4.68 | 3.82 | 5.41 | 25.6 °C |
| September | 4.86 | 4.73 | 3.94 | 4.66 | 21.0 °C |
| October | 3.44 | 4.50 | 3.82 | 3.89 | 16.4 °C |
| November | 2.24 | 3.70 | 3.20 | 2.92 | 11.9 °C |
| December | 1.72 | 3.28 | 2.88 | 2.49 | 7.5 °C |
| Year | 4.44 avg | 4.03 avg | 1249 kWh | 1518 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 410 Wp of panels at 70°, versus 470 Wp at 32°. The steep array is 14% smaller for the same winter. Size your own system.
Row spacing in Ioánnina
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.
5.0 mrow pitch at 70°
4.1 mrow pitch at 32°
How Ioánnina compares in Greece
Against the other 116 places in Greece with climate data, for a fixed array at its best angle.
81stof 117 places in Greece for sunshine: 4.44 peak sun hours a day on flat ground.
−1%solar energy a year compared with the average place in Greece: 1,518 against 1,533 kWh per kWp.
+11 mindaylight on the longest day, compared with Athens: 14 h 59 min against 14 h 48 min.
32°best year-round tilt here; across Greece it runs from 27° in Irákleion to 34° in Sérres.
Of the 117 places in Greece, Ródos gets the most sun (5.17 peak sun hours a day) and Dráma the least (4.18); Ioánnina ranks 81st. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.88 kWh a day here, against 2.64 kWh on average in Greece. The shortest day lasts 9 h 22 min, −10 min compared with Athens.
Solar forecast for Ioánnina, 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 Ioánnina
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Places near Ioánnina
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A free, live card for Ioánnina: 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.