Attica · Greece · 38.05° N · 23.77° E
Solar position in Irákleio
Sun position, daylight and the best solar panel angle for Irákleio — computed for 38.05° N, 23.77° E, 169 m above sea level.
The sun right now
Sun in Irákleio today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:14 | sun 18° below horizon |
| Nautical dawn | 06:44 | 12° below |
| Civil dawn | 07:15 | 6° below |
| Sunrise | 07:42 | 104° ESE |
| Golden hour ends | 08:18 | sun 6° up |
| Solar noon | 13:08 | 40.1° high |
| Golden hour starts | 17:59 | sun 6° up |
| Sunset | 18:35 | 255° WSW |
| Civil dusk | 19:02 | 6° below |
| Nautical dusk | 19:33 | 12° below |
| Astronomical dusk | 20:03 | 18° below |
| Day length | 10 h 53 min | |
Sun path diagram for Irákleio
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 75.4° at solar noon in Irákleio; on the December solstice only 28.5°. Sunrise swings from 59° ENE in June to 120° ESE in December — a 61° 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 | 07:37 | 12:36 | 17:35 | 9 h 58 min | 32.1° |
| February | 07:07 | 12:38 | 18:09 | 11 h 02 min | 41.5° |
| March | 06:27 | 12:32 | 18:37 | 12 h 10 min | 52.3° |
| April | 06:41 | 13:23 | 20:06 | 13 h 25 min | 63.9° |
| May | 06:09 | 13:21 | 20:33 | 14 h 24 min | 72.2° |
| June | 06:02 | 13:26 | 20:51 | 14 h 49 min | 75.4° |
| July | 06:18 | 13:31 | 20:43 | 14 h 25 min | 72.4° |
| August | 06:45 | 13:27 | 20:10 | 13 h 25 min | 64.0° |
| September | 07:11 | 13:17 | 19:23 | 12 h 12 min | 52.6° |
| October | 07:39 | 13:09 | 18:39 | 11 h 00 min | 41.2° |
| November | 07:11 | 12:10 | 17:09 | 9 h 57 min | 32.0° |
| December | 07:37 | 12:22 | 17:08 | 9 h 31 min | 28.5° |
A year of daylight in Irákleio
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 Irákleio
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
29°collects the most energy over a year: 1543 kWh per kWp.
61°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° | 1372 | 89% | 1.37 | 4.4× |
| 15° | 1502 | 97% | 1.85 | 3.3× |
| 29° year-round best | 1543 | 100% | 2.20 | 2.6× |
| 30° | 1543 | 100% | 2.22 | 2.6× |
| 38° = latitude | 1529 | 99% | 2.37 | 2.3× |
| 45° | 1495 | 97% | 2.46 | 2.1× |
| 60° | 1361 | 88% | 2.55 | 1.8× |
| 61° off-grid best | 1349 | 87% | 2.55 | 1.7× |
| 70° | 1228 | 80% | 2.52 | 1.6× |
| 90° | 886 | 57% | 2.26 | 1.8× |
A fixed array in Irákleio produces the most over a year at 29°. The design month for an off-grid system is December: at 61° it makes 2.55 kWh per kWp a day, 16% more than at 29°, and costs 13% of the yearly total. Why steep panels win winter.
Off-grid solar in Irákleio at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 29° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 29° | Mean temp. |
|---|---|---|---|---|---|
| January | 2.01 | 3.24 | 2.81 | 2.51 | 10.4 °C |
| February | 2.80 | 3.63 | 3.15 | 3.13 | 10.7 °C |
| March | 4.15 | 4.33 | 3.73 | 4.19 | 12.5 °C |
| April | 5.53 | 4.33 | 3.69 | 4.93 | 15.0 °C |
| May | 6.64 | 4.05 | 3.38 | 5.32 | 19.5 °C |
| June | 7.53 | 3.87 | 3.16 | 5.60 | 24.1 °C |
| July | 7.64 | 4.09 | 3.32 | 5.72 | 26.6 °C |
| August | 6.83 | 4.70 | 3.81 | 5.59 | 26.8 °C |
| September | 5.20 | 4.94 | 4.08 | 4.88 | 23.6 °C |
| October | 3.54 | 4.41 | 3.70 | 3.79 | 19.5 °C |
| November | 2.34 | 3.59 | 3.05 | 2.81 | 15.7 °C |
| December | 1.73 | 2.92 | 2.52 | 2.20 | 12.0 °C |
| Year | 4.67 avg | 4.01 avg | 1228 kWh | 1543 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 470 Wp of panels at 70°, versus 540 Wp at 29°. The steep array is 13% smaller for the same winter. Size your own system.
Row spacing in Irákleio
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.
4.7 mrow pitch at 70°
3.8 mrow pitch at 29°
How Irákleio compares in Greece
Against the other 116 places in Greece with climate data, for a fixed array at its best angle.
58thof 117 places in Greece for sunshine, shared: 4.67 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in Greece: 1,544 against 1,533 kWh per kWp.
±0 mindaylight on the longest day, compared with Athens: 14 h 49 min against 14 h 48 min.
29°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); Irákleio ranks joint 58th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.52 kWh a day here, against 2.64 kWh on average in Greece. The shortest day lasts 9 h 31 min, ±0 min compared with Athens.
Solar forecast for Irákleio, 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 Irákleio
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A free, live card for Irákleio: 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.