Telemark · Norway · 59.14° N · 9.66° E
Solar position in Porsgrunn
Sun position, daylight and the best solar panel angle for Porsgrunn — computed for 59.14° N, 9.66° E, 9 m above sea level.
The sun right now
Sun in Porsgrunn today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:03 | sun 18° below horizon |
| Nautical dawn | 06:50 | 12° below |
| Civil dawn | 07:37 | 6° below |
| Sunrise | 08:20 | 112° ESE |
| Golden hour ends | 09:21 | sun 6° up |
| Solar noon | 13:05 | 19.1° high |
| Golden hour starts | 16:49 | sun 6° up |
| Sunset | 17:49 | 248° WSW |
| Civil dusk | 18:32 | 6° below |
| Nautical dusk | 19:19 | 12° below |
| Astronomical dusk | 20:06 | 18° below |
| Day length | 9 h 30 min | |
Sun path diagram for Porsgrunn
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 54.3° at solar noon in Porsgrunn; on the December solstice only 7.5°. Sunrise swings from 37° NE in June to 139° SE in December — a 102° 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 | 08:52 | 12:32 | 16:12 | 7 h 20 min | 11.1° |
| February | 07:40 | 12:35 | 17:30 | 9 h 50 min | 20.4° |
| March | 06:20 | 12:28 | 18:37 | 12 h 17 min | 31.2° |
| April | 05:50 | 13:20 | 20:50 | 15 h 00 min | 42.8° |
| May | 04:37 | 13:18 | 22:00 | 17 h 23 min | 51.1° |
| June | 04:06 | 13:23 | 22:39 | 18 h 33 min | 54.3° |
| July | 04:44 | 13:27 | 22:10 | 17 h 26 min | 51.3° |
| August | 05:53 | 13:24 | 20:54 | 15 h 01 min | 42.9° |
| September | 07:03 | 13:14 | 19:24 | 12 h 21 min | 31.5° |
| October | 08:12 | 13:05 | 17:58 | 9 h 45 min | 20.1° |
| November | 08:28 | 12:06 | 15:45 | 7 h 18 min | 11.0° |
| December | 09:15 | 12:19 | 15:23 | 6 h 08 min | 7.5° |
A year of daylight in Porsgrunn
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 Porsgrunn
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
45°collects the most energy over a year: 1059 kWh per kWp.
81°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° | 799 | 75% | 0.14 | 34.3× |
| 15° | 940 | 89% | 0.29 | 17.2× |
| 30° | 1029 | 97% | 0.44 | 11.6× |
| 45° year-round best | 1059 | 100% | 0.55 | 8.7× |
| 59° = latitude | 1033 | 98% | 0.63 | 6.9× |
| 60° | 1030 | 97% | 0.64 | 6.8× |
| 70° | 978 | 92% | 0.67 | 5.8× |
| 81° off-grid best | 894 | 84% | 0.68 | 5.2× |
| 90° | 807 | 76% | 0.67 | 4.7× |
A fixed array in Porsgrunn produces the most over a year at 45°. The design month for an off-grid system is December: at 81° it makes 0.68 kWh per kWp a day, 23% more than at 45°, and costs 16% of the yearly total. Why steep panels win winter.
Off-grid solar in Porsgrunn at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 45° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 45° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 0.32 | 1.08 | 0.96 | 0.80 | -3.0 °C |
| February snow | 0.93 | 2.14 | 1.93 | 1.71 | -3.1 °C |
| March snow | 2.33 | 3.84 | 3.47 | 3.37 | -0.6 °C |
| April | 3.88 | 4.38 | 3.88 | 4.27 | 4.3 °C |
| May | 5.03 | 4.45 | 3.85 | 4.61 | 9.5 °C |
| June | 5.77 | 4.56 | 3.88 | 4.83 | 13.5 °C |
| July | 5.20 | 4.30 | 3.63 | 4.44 | 15.8 °C |
| August | 4.06 | 4.06 | 3.45 | 3.94 | 14.9 °C |
| September | 2.63 | 3.56 | 3.07 | 3.18 | 11.3 °C |
| October | 1.25 | 2.44 | 2.14 | 2.01 | 6.0 °C |
| November | 0.46 | 1.36 | 1.20 | 1.04 | 1.7 °C |
| December snow | 0.21 | 0.76 | 0.67 | 0.55 | -1.9 °C |
| Year | 2.68 avg | 3.08 avg | 978 kWh | 1059 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 2,130 Wp at 45°. The steep array is 17% smaller for the same winter. Size your own system.
Row spacing in Porsgrunn
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.
25.9 mrow pitch at 70°
20.4 mrow pitch at 45°
How Porsgrunn compares in Norway
Against the other 39 places in Norway with climate data, for a fixed array at its best angle.
10thof 40 places in Norway for sunshine, shared: 2.68 peak sun hours a day on flat ground.
+10%solar energy a year compared with the average place in Norway: 1,059 against 967 kWh per kWp.
−17 mindaylight on the longest day, compared with Oslo: 18 h 33 min against 18 h 50 min.
45°best year-round tilt here; across Norway it runs from 42° in Bergen to 48° in Tromsø.
Of the 40 places in Norway, Grimstad gets the most sun (2.78 peak sun hours a day) and Tromsø and one other place the least (1.95); Porsgrunn ranks joint 10th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 0.67 kWh a day here, against 0.41 kWh on average in Norway. The shortest day lasts 6 h 08 min, +14 min compared with Oslo.
Solar forecast for Porsgrunn, 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 Porsgrunn
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Places near Porsgrunn
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A free, live card for Porsgrunn: 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.