State of Vienna · Austria · 48.21° N · 16.37° E
Solar position in Vienna
Sun position, daylight and the best solar panel angle for Vienna — computed for 48.21° N, 16.37° E, 171 m above sea level.
The sun right now
Sun in Vienna today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:42 | sun 18° below horizon |
| Nautical dawn | 06:19 | 12° below |
| Civil dawn | 06:55 | 6° below |
| Sunrise | 07:27 | 107° ESE |
| Golden hour ends | 08:11 | sun 6° up |
| Solar noon | 12:38 | 30.0° high |
| Golden hour starts | 17:05 | sun 6° up |
| Sunset | 17:49 | 253° WSW |
| Civil dusk | 18:21 | 6° below |
| Nautical dusk | 18:57 | 12° below |
| Astronomical dusk | 19:33 | 18° below |
| Day length | 10 h 22 min | |
Sun path diagram for Vienna
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 65.2° at solar noon in Vienna; on the December solstice only 18.4°. Sunrise swings from 52° NE in June to 125° SE in December — a 73° 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 | 07:35 | 12:06 | 16:36 | 9 h 01 min | 22.0° |
| February | 06:51 | 12:08 | 17:25 | 10 h 35 min | 31.4° |
| March | 05:55 | 12:01 | 18:08 | 12 h 13 min | 42.1° |
| April | 05:53 | 12:53 | 19:53 | 14 h 00 min | 53.7° |
| May | 05:08 | 12:51 | 20:34 | 15 h 27 min | 62.0° |
| June | 04:53 | 12:56 | 20:58 | 16 h 05 min | 65.2° |
| July | 05:16 | 13:00 | 20:44 | 15 h 29 min | 62.2° |
| August | 05:56 | 12:57 | 19:57 | 14 h 01 min | 53.8° |
| September | 06:39 | 12:47 | 18:54 | 12 h 15 min | 42.4° |
| October | 07:22 | 12:38 | 17:54 | 10 h 32 min | 31.0° |
| November | 07:10 | 11:40 | 16:10 | 9 h 00 min | 21.9° |
| December | 07:42 | 11:52 | 16:02 | 8 h 20 min | 18.4° |
A year of daylight in Vienna
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 Vienna
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
37°collects the most energy over a year: 1192 kWh per kWp.
72°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° | 989 | 83% | 0.62 | 7.5× |
| 15° | 1118 | 94% | 0.94 | 5.1× |
| 30° | 1184 | 99% | 1.21 | 3.9× |
| 37° year-round best | 1192 | 100% | 1.32 | 3.5× |
| 45° | 1184 | 99% | 1.41 | 3.1× |
| 48° = latitude | 1175 | 99% | 1.44 | 3.0× |
| 60° | 1117 | 94% | 1.53 | 2.6× |
| 70° | 1039 | 87% | 1.56 | 2.4× |
| 72° off-grid best | 1020 | 86% | 1.56 | 2.3× |
| 90° | 814 | 68% | 1.49 | 1.8× |
A fixed array in Vienna produces the most over a year at 37°. The design month for an off-grid system is December: at 72° it makes 1.56 kWh per kWp a day, 19% more than at 37°, and costs 14% of the yearly total. Why steep panels win winter.
Off-grid solar in Vienna at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 37° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 37° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.01 | 2.00 | 1.80 | 1.56 | -2.0 °C |
| February snow | 1.82 | 2.89 | 2.60 | 2.43 | -0.2 °C |
| March | 3.03 | 3.70 | 3.28 | 3.47 | 4.1 °C |
| April | 4.55 | 4.24 | 3.68 | 4.40 | 9.8 °C |
| May | 5.29 | 3.95 | 3.35 | 4.47 | 14.6 °C |
| June | 5.75 | 3.88 | 3.23 | 4.54 | 19.0 °C |
| July | 5.66 | 3.96 | 3.28 | 4.53 | 21.1 °C |
| August | 4.95 | 4.18 | 3.47 | 4.37 | 20.6 °C |
| September | 3.58 | 3.96 | 3.36 | 3.72 | 15.2 °C |
| October | 2.19 | 3.16 | 2.74 | 2.71 | 9.6 °C |
| November | 1.14 | 2.04 | 1.79 | 1.63 | 4.4 °C |
| December snow | 0.80 | 1.74 | 1.56 | 1.32 | -0.7 °C |
| Year | 3.32 avg | 3.31 avg | 1039 kWh | 1192 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 760 Wp of panels at 70°, versus 900 Wp at 37°. The steep array is 16% smaller for the same winter. Size your own system.
Row spacing in Vienna
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.
7.6 mrow pitch at 70°
6.0 mrow pitch at 37°
How Vienna compares in Austria
Against the other 28 places in Austria with climate data, for a fixed array at its best angle.
17thof 29 places in Austria for sunshine, shared: 3.32 peak sun hours a day on flat ground.
−2%solar energy a year compared with the average place in Austria: 1,192 against 1,220 kWh per kWp.
+5 mindaylight on the longest day, compared with the average place in Austria: 16 h 05 min against 16 h 00 min.
37°best year-round tilt here; across Austria it runs from 37° in Vienna to 41° in Innsbruck.
Of the 29 places in Austria, Villach gets the most sun (3.45 peak sun hours a day) and Linz and 4 other places the least (3.22); Vienna ranks joint 17th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.56 kWh a day here, against 1.92 kWh on average in Austria. The shortest day lasts 8 h 20 min, −4 min compared with the average.
Solar forecast for Vienna, 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 Vienna
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Places near Vienna
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A free, live card for Vienna: 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.