Solarposition.org

Scotland · United Kingdom · 55.83° N · 4.52° W

Solar position in Johnstone

Sun position, daylight and the best solar panel angle for Johnstone — computed for 55.83° N, 4.52° W, 36 m above sea level.

Sunrise today08:07110° ESE
Sunset today17:56250° WSW
Best panel angle43°year-round, facing south
Off-grid angle77°best for the darkest month

The sun right now

Azimuth180.0°
Elevation22.4°
At solar noon, 13:01Open on the sun map

Sun in Johnstone today

Saturday, 24 October 2026 · local time UTC+1

EventTimeDirection / height
Astronomical dawn06:03sun 18° below horizon
Nautical dawn06:4512° below
Civil dawn07:296° below
Sunrise08:07110° ESE
Golden hour ends09:01sun 6° up
Solar noon13:0122.4° high
Golden hour starts17:01sun 6° up
Sunset17:56250° WSW
Civil dusk18:346° below
Nautical dusk19:1712° below
Astronomical dusk20:0018° below
Day length9 h 49 min

Sun path diagram for Johnstone

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice56789101112131415161718192021EquinoxDecember solstice101112131415Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 57.6° at solar noon in Johnstone; on the December solstice only 10.8°. Sunrise swings from 43° NE in June to 133° SE in December — a 90° 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January08:3012:2916:287 h 58 min14.4°
February07:2812:3217:3510 h 06 min23.8°
March06:1712:2518:3312 h 16 min34.5°
April05:5813:1720:3614 h 38 min46.1°
May04:5513:1421:3416 h 39 min54.4°
June04:3213:1922:0717 h 35 min57.6°
July05:0313:2421:4416 h 41 min54.6°
August06:0113:2020:3914 h 39 min46.2°
September07:0113:1019:1912 h 19 min34.8°
October08:0113:0218:0310 h 02 min23.4°
November08:0512:0316:017 h 56 min14.3°
December08:4612:1615:456 h 59 min10.8°

A year of daylight in Johnstone

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Johnstone

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: 942 kWh per kWp.

77°gives the most in the darkest month — the one an off-grid system is sized for.

20%30%40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 43°Best worst-month 77°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°73878%0.2416.5×
15°85491%0.469.2×
30°92498%0.666.5×
43° year-round best942100%0.805.2×
45°942100%0.815.1×
56° = latitude92298%0.894.3×
60°90896%0.924.1×
70°85791%0.953.6×
77° off-grid best81086%0.963.3×
90°69874%0.942.8×

A fixed array in Johnstone produces the most over a year at 43°. The design month for an off-grid system is December: at 77° it makes 0.96 kWh per kWp a day, 21% more than at 43°, and costs 14% of the yearly total. Why steep panels win winter.

Off-grid solar in Johnstone at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 43° (year-round best).

012345January: 1.12 (70°)1.1JanFebruary: 1.97 (70°)2.0FebMarch: 2.73 (70°)2.7MarApril: 3.35 (70°)3.3AprMay: 3.39 (70°)3.4MayJune: 2.99 (70°)3.0JunJuly: 2.92 (70°)2.9JulAugust: 2.80 (70°)2.8AugSeptember: 2.58 (70°)2.6SepOctober: 2.00 (70°)2.0OctNovember: 1.39 (70°)1.4NovDecember: 0.95 (70°)1.0Dec43°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 43°Mean temp.
January0.471.281.120.963.0 °C
February1.142.221.971.822.9 °C
March2.243.092.732.794.0 °C
April3.683.823.353.786.4 °C
May4.683.923.394.179.3 °C
June4.623.512.993.8112.2 °C
July4.373.452.923.6613.7 °C
August3.573.292.803.2813.3 °C
September2.523.012.582.7511.4 °C
October1.382.312.001.938.6 °C
November0.641.591.391.215.6 °C
December0.351.090.950.803.7 °C
Year2.48 avg2.72 avg857 kWh942 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 1,240 Wp of panels at 70°, versus 1,480 Wp at 43°. The steep array is 16% smaller for the same winter. Size your own system.

Row spacing in Johnstone

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.

14.8 mrow pitch at 70°

11.7 mrow pitch at 43°

Row spacing calculator

How Johnstone compares in the United Kingdom

Against the other 801 places in the United Kingdom with climate data, for a fixed array at its best angle.

772ndof 802 places in the United Kingdom for sunshine, shared: 2.48 peak sun hours a day on flat ground.

−11%solar energy a year compared with the average place in the United Kingdom: 942 against 1,058 kWh per kWp.

+56 mindaylight on the longest day, compared with London: 17 h 35 min against 16 h 38 min.

43°best year-round tilt here; across the United Kingdom it runs from 38° in Plymouth to 45° in Elgin.

Of the 802 places in the United Kingdom, Sandown and 2 other places get the most sun (3.23 peak sun hours a day) and Fort William the least (2.32); Johnstone ranks joint 772nd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 0.95 kWh a day here, against 1.32 kWh on average in the United Kingdom. The shortest day lasts 6 h 59 min, −50 min compared with London.

The sunniest places in the United Kingdom

Solar forecast for Johnstone, 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 Johnstone

What is the best solar panel angle in Johnstone?
For a fixed array facing south, the best year-round tilt in Johnstone is 43°, worth about 942 kWh per kWp a year. An off-grid system that has to get through December does better at about 77°.
What time is sunrise and sunset in Johnstone today?
On 24 October 2026 the sun rises at 08:07 and sets at 17:56 local time (UTC+1), giving 9 h 49 min of daylight. Solar noon is at 13:01.
How many peak sun hours does Johnstone get?
On a flat surface 2.5 hours a day averaged over the year, from 0.3 in December to 4.7 in May. Panels tilted at 70° receive 1.1 sun hours a day in December.
How high does the sun get in Johnstone?
At solar noon the sun stands 57.6° above the horizon on the June solstice and 10.8° on the December solstice.
Is Johnstone a good place for solar panels?
With 2.5 peak sun hours a day on flat ground, Johnstone ranks joint 772nd of 802 places in the United Kingdom for sunshine. A 1 kWp array at the best angle (43°) makes about 942 kWh a year here, 11% less than the average place in the United Kingdom.

Places near Johnstone

All places in United Kingdom

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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.