Västra Götaland · Sweden · 57.77° N · 12.27° E
Solar position in Lerum
Sun position, daylight and the best solar panel angle for Lerum — computed for 57.77° N, 12.27° E, 20 m above sea level.
The sun right now
Sun in Lerum today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:54 | sun 18° below horizon |
| Nautical dawn | 06:39 | 12° below |
| Civil dawn | 07:25 | 6° below |
| Sunrise | 08:05 | 111° ESE |
| Golden hour ends | 09:03 | sun 6° up |
| Solar noon | 12:54 | 20.4° high |
| Golden hour starts | 16:45 | sun 6° up |
| Sunset | 17:43 | 249° WSW |
| Civil dusk | 18:24 | 6° below |
| Nautical dusk | 19:09 | 12° below |
| Astronomical dusk | 19:54 | 18° below |
| Day length | 9 h 38 min | |
Sun path diagram for Lerum
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 55.7° at solar noon in Lerum; on the December solstice only 8.9°. Sunrise swings from 40° NE in June to 136° SE in December — a 97° 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 | 08:34 | 12:22 | 16:10 | 7 h 37 min | 12.5° |
| February | 07:26 | 12:24 | 17:23 | 9 h 57 min | 21.8° |
| March | 06:10 | 12:18 | 18:27 | 12 h 17 min | 32.6° |
| April | 05:45 | 13:09 | 20:35 | 14 h 50 min | 44.2° |
| May | 04:36 | 13:07 | 21:39 | 17 h 03 min | 52.5° |
| June | 04:09 | 13:12 | 22:16 | 18 h 07 min | 55.7° |
| July | 04:43 | 13:17 | 21:49 | 17 h 06 min | 52.7° |
| August | 05:47 | 13:13 | 20:39 | 14 h 51 min | 44.3° |
| September | 06:53 | 13:03 | 19:13 | 12 h 20 min | 32.9° |
| October | 07:58 | 12:55 | 17:51 | 9 h 52 min | 21.5° |
| November | 08:09 | 11:56 | 15:43 | 7 h 35 min | 12.3° |
| December | 08:53 | 12:08 | 15:24 | 6 h 31 min | 8.9° |
A year of daylight in Lerum
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 Lerum
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
43°collects the most energy over a year: 1054 kWh per kWp.
78°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° | 814 | 77% | 0.17 | 28.4× |
| 15° | 949 | 90% | 0.32 | 15.5× |
| 30° | 1031 | 98% | 0.46 | 10.8× |
| 43° year-round best | 1054 | 100% | 0.56 | 8.5× |
| 45° | 1054 | 100% | 0.57 | 8.2× |
| 58° = latitude | 1025 | 97% | 0.64 | 6.8× |
| 60° | 1017 | 96% | 0.65 | 6.6× |
| 70° | 960 | 91% | 0.67 | 5.8× |
| 78° off-grid best | 898 | 85% | 0.68 | 5.3× |
| 90° | 780 | 74% | 0.66 | 4.7× |
A fixed array in Lerum produces the most over a year at 43°. The design month for an off-grid system is December: at 78° it makes 0.68 kWh per kWp a day, 21% more than at 43°, and costs 15% of the yearly total. Why steep panels win winter.
Off-grid solar in Lerum at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 43° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 43° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 0.36 | 1.07 | 0.95 | 0.79 | -1.1 °C |
| February snow | 0.97 | 2.03 | 1.82 | 1.64 | -1.1 °C |
| March | 2.37 | 3.66 | 3.28 | 3.26 | 1.3 °C |
| April | 3.98 | 4.43 | 3.90 | 4.32 | 6.2 °C |
| May | 5.19 | 4.50 | 3.87 | 4.71 | 11.1 °C |
| June | 5.71 | 4.42 | 3.75 | 4.76 | 14.7 °C |
| July | 5.22 | 4.24 | 3.56 | 4.43 | 17.1 °C |
| August | 4.11 | 4.01 | 3.38 | 3.91 | 16.5 °C |
| September | 2.79 | 3.64 | 3.12 | 3.26 | 13.0 °C |
| October | 1.33 | 2.45 | 2.13 | 2.00 | 8.0 °C |
| November | 0.49 | 1.27 | 1.10 | 0.96 | 4.0 °C |
| December | 0.25 | 0.77 | 0.67 | 0.56 | 0.7 °C |
| Year | 2.74 avg | 3.05 avg | 960 kWh | 1054 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 1,760 Wp of panels at 70°, versus 2,110 Wp at 43°. The steep array is 17% smaller for the same winter. Size your own system.
Row spacing in Lerum
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.
19.7 mrow pitch at 70°
15.3 mrow pitch at 43°
How Lerum compares in Sweden
Against the other 98 places in Sweden with climate data, for a fixed array at its best angle.
55thof 99 places in Sweden for sunshine, shared: 2.74 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Sweden: 1,054 against 1,059 kWh per kWp.
−30 mindaylight on the longest day, compared with Stockholm: 18 h 07 min against 18 h 37 min.
43°best year-round tilt here; across Sweden it runs from 41° in Malmö to 50° in Kiruna.
Of the 99 places in Sweden, Kalmar gets the most sun (2.96 peak sun hours a day) and Kiruna the least (2.22); Lerum ranks joint 55th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 0.67 kWh a day here, against 0.59 kWh on average in Sweden. The shortest day lasts 6 h 31 min, +26 min compared with Stockholm.
Solar forecast for Lerum, 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 Lerum
What is the best solar panel angle in Lerum?
What time is sunrise and sunset in Lerum today?
How many peak sun hours does Lerum get?
How high does the sun get in Lerum?
Is Lerum a good place for solar panels?
Places near Lerum
Put this on your site
A free, live card for Lerum: 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.