Solothurn · Switzerland · 47.35° N · 7.90° E
Solar position in Olten
Sun position, daylight and the best solar panel angle for Olten — computed for 47.35° N, 7.90° E, 406 m above sea level.
The sun right now
Sun in Olten today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:17 | sun 18° below horizon |
| Nautical dawn | 06:52 | 12° below |
| Civil dawn | 07:28 | 6° below |
| Sunrise | 07:59 | 107° ESE |
| Golden hour ends | 08:42 | sun 6° up |
| Solar noon | 13:12 | 30.8° high |
| Golden hour starts | 17:41 | sun 6° up |
| Sunset | 18:24 | 253° WSW |
| Civil dusk | 18:56 | 6° below |
| Nautical dusk | 19:31 | 12° below |
| Astronomical dusk | 20:07 | 18° below |
| Day length | 10 h 25 min | |
Sun path diagram for Olten
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 66.1° at solar noon in Olten; on the December solstice only 19.3°. Sunrise swings from 53° NE in June to 125° SE in December — a 72° 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 | 08:06 | 12:39 | 17:13 | 9 h 07 min | 22.8° |
| February | 07:23 | 12:42 | 18:01 | 10 h 38 min | 32.2° |
| March | 06:29 | 12:35 | 18:42 | 12 h 13 min | 43.0° |
| April | 06:29 | 13:27 | 20:25 | 13 h 56 min | 54.6° |
| May | 05:45 | 13:25 | 21:05 | 15 h 20 min | 62.9° |
| June | 05:31 | 13:30 | 21:28 | 15 h 57 min | 66.1° |
| July | 05:53 | 13:34 | 21:15 | 15 h 22 min | 63.1° |
| August | 06:32 | 13:31 | 20:29 | 13 h 57 min | 54.7° |
| September | 07:13 | 13:21 | 19:28 | 12 h 15 min | 43.3° |
| October | 07:55 | 13:12 | 18:29 | 10 h 35 min | 31.9° |
| November | 07:41 | 12:14 | 16:46 | 9 h 06 min | 22.7° |
| December | 08:12 | 12:26 | 16:40 | 8 h 28 min | 19.3° |
A year of daylight in Olten
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 Olten
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: 1256 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° | 1035 | 82% | 0.74 | 6.6× |
| 15° | 1173 | 93% | 1.14 | 4.4× |
| 30° | 1246 | 99% | 1.48 | 3.3× |
| 38° year-round best | 1256 | 100% | 1.63 | 2.9× |
| 45° | 1249 | 99% | 1.73 | 2.6× |
| 47° = latitude | 1244 | 99% | 1.76 | 2.5× |
| 60° | 1181 | 94% | 1.88 | 2.1× |
| 70° | 1100 | 88% | 1.92 | 1.9× |
| 72° off-grid best | 1081 | 86% | 1.92 | 1.8× |
| 90° | 864 | 69% | 1.84 | 1.6× |
A fixed array in Olten produces the most over a year at 38°. The design month for an off-grid system is December: at 72° it makes 1.92 kWh per kWp a day, 18% more than at 38°, and costs 14% of the yearly total. Why steep panels win winter.
Off-grid solar in Olten 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 | 1.18 | 2.43 | 2.19 | 1.91 | -1.3 °C |
| February snow | 2.01 | 3.24 | 2.93 | 2.75 | -0.6 °C |
| March | 3.24 | 3.94 | 3.51 | 3.73 | 3.5 °C |
| April | 4.46 | 4.07 | 3.55 | 4.28 | 8.0 °C |
| May | 5.12 | 3.78 | 3.23 | 4.32 | 12.2 °C |
| June | 5.92 | 3.91 | 3.29 | 4.66 | 16.3 °C |
| July | 5.83 | 4.00 | 3.35 | 4.66 | 17.9 °C |
| August | 5.00 | 4.15 | 3.49 | 4.42 | 17.4 °C |
| September | 3.80 | 4.17 | 3.58 | 3.98 | 13.3 °C |
| October | 2.38 | 3.43 | 2.99 | 2.97 | 9.1 °C |
| November | 1.32 | 2.42 | 2.14 | 1.95 | 3.6 °C |
| December snow | 0.95 | 2.14 | 1.92 | 1.63 | -0.3 °C |
| Year | 3.44 avg | 3.47 avg | 1100 kWh | 1256 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 610 Wp of panels at 70°, versus 720 Wp at 38°. The steep array is 15% smaller for the same winter. Size your own system.
Row spacing in Olten
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.
7.2 mrow pitch at 70°
5.9 mrow pitch at 38°
How Olten compares in Switzerland
Against the other 72 places in Switzerland with climate data, for a fixed array at its best angle.
39thof 73 places in Switzerland for sunshine, shared: 3.44 peak sun hours a day on flat ground.
−2%solar energy a year compared with the average place in Switzerland: 1,256 against 1,282 kWh per kWp.
±0 mindaylight on the longest day, compared with Zürich: 15 h 57 min against 15 h 57 min.
38°best year-round tilt here; across Switzerland it runs from 38° in Zürich to 40° in Bellinzona.
Of the 73 places in Switzerland, Martigny-Ville and one other place get the most sun (3.64 peak sun hours a day) and Schaffhausen the least (3.37); Olten ranks joint 39th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.92 kWh a day here, against 2.10 kWh on average in Switzerland. The shortest day lasts 8 h 28 min, ±0 min compared with Zürich.
Solar forecast for Olten, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
Loading the latest forecast…
Questions about the sun in Olten
What is the best solar panel angle in Olten?
What time is sunrise and sunset in Olten today?
How many peak sun hours does Olten get?
How high does the sun get in Olten?
Is Olten a good place for solar panels?
Places near Olten
Put this on your site
A free, live card for Olten: 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.