Bern · Switzerland · 47.14° N · 7.25° E
Solar position in Biel/Bienne
Sun position, daylight and the best solar panel angle for Biel/Bienne — computed for 47.14° N, 7.25° E, 434 m above sea level.
The sun right now
Sun in Biel/Bienne today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:19 | sun 18° below horizon |
| Nautical dawn | 06:55 | 12° below |
| Civil dawn | 07:30 | 6° below |
| Sunrise | 08:02 | 107° ESE |
| Golden hour ends | 08:45 | sun 6° up |
| Solar noon | 13:14 | 31.0° high |
| Golden hour starts | 17:44 | sun 6° up |
| Sunset | 18:27 | 253° WSW |
| Civil dusk | 18:58 | 6° below |
| Nautical dusk | 19:34 | 12° below |
| Astronomical dusk | 20:09 | 18° below |
| Day length | 10 h 26 min | |
Sun path diagram for Biel/Bienne
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 66.3° at solar noon in Biel/Bienne; on the December solstice only 19.5°. 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 | 08:08 | 12:42 | 17:16 | 9 h 08 min | 23.1° |
| February | 07:25 | 12:44 | 18:04 | 10 h 38 min | 32.4° |
| March | 06:32 | 12:38 | 18:44 | 12 h 13 min | 43.2° |
| April | 06:32 | 13:29 | 20:27 | 13 h 56 min | 54.8° |
| May | 05:48 | 13:27 | 21:07 | 15 h 19 min | 63.1° |
| June | 05:35 | 13:32 | 21:30 | 15 h 55 min | 66.3° |
| July | 05:56 | 13:37 | 21:17 | 15 h 21 min | 63.3° |
| August | 06:35 | 13:34 | 20:31 | 13 h 56 min | 54.9° |
| September | 07:16 | 13:23 | 19:31 | 12 h 15 min | 43.5° |
| October | 07:57 | 13:15 | 18:32 | 10 h 35 min | 32.1° |
| November | 07:43 | 12:16 | 16:50 | 9 h 07 min | 22.9° |
| December | 08:14 | 12:29 | 16:43 | 8 h 29 min | 19.5° |
A year of daylight in Biel/Bienne
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 Biel/Bienne
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: 1279 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° | 1053 | 82% | 0.76 | 6.6× |
| 15° | 1194 | 93% | 1.17 | 4.4× |
| 30° | 1268 | 99% | 1.51 | 3.3× |
| 38° year-round best | 1279 | 100% | 1.66 | 2.9× |
| 45° | 1271 | 99% | 1.77 | 2.6× |
| 47° = latitude | 1266 | 99% | 1.80 | 2.5× |
| 60° | 1202 | 94% | 1.92 | 2.1× |
| 70° | 1119 | 88% | 1.96 | 1.9× |
| 72° off-grid best | 1099 | 86% | 1.96 | 1.8× |
| 90° | 878 | 69% | 1.87 | 1.6× |
A fixed array in Biel/Bienne produces the most over a year at 38°. The design month for an off-grid system is December: at 72° it makes 1.96 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 Biel/Bienne 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 | 1.21 | 2.50 | 2.26 | 1.97 | -1.9 °C |
| February snow | 2.04 | 3.31 | 2.99 | 2.81 | -1.2 °C |
| March | 3.25 | 3.94 | 3.52 | 3.74 | 2.7 °C |
| April | 4.46 | 4.06 | 3.56 | 4.30 | 7.2 °C |
| May | 5.14 | 3.78 | 3.24 | 4.34 | 11.3 °C |
| June | 6.02 | 3.95 | 3.34 | 4.74 | 15.5 °C |
| July | 5.93 | 4.05 | 3.40 | 4.75 | 17.2 °C |
| August | 5.09 | 4.21 | 3.56 | 4.51 | 16.7 °C |
| September | 3.89 | 4.28 | 3.68 | 4.10 | 12.7 °C |
| October | 2.45 | 3.53 | 3.08 | 3.07 | 8.6 °C |
| November | 1.36 | 2.49 | 2.21 | 2.02 | 3.0 °C |
| December snow | 0.97 | 2.17 | 1.96 | 1.66 | -0.9 °C |
| Year | 3.49 avg | 3.52 avg | 1119 kWh | 1279 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 600 Wp of panels at 70°, versus 710 Wp at 38°. The steep array is 15% smaller for the same winter. Size your own system.
Row spacing in Biel/Bienne
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.
7.1 mrow pitch at 70°
5.8 mrow pitch at 38°
How Biel/Bienne compares in Switzerland
Against the other 72 places in Switzerland with climate data, for a fixed array at its best angle.
30thof 73 places in Switzerland for sunshine: 3.49 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Switzerland: 1,279 against 1,282 kWh per kWp.
−2 mindaylight on the longest day, compared with Zürich: 15 h 55 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); Biel/Bienne ranks 30th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.96 kWh a day here, against 2.10 kWh on average in Switzerland. The shortest day lasts 8 h 29 min, +2 min compared with Zürich.
Solar forecast for Biel/Bienne, 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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A free, live card for Biel/Bienne: 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.