Solarposition.org

Srpska · Bosnia and Herzegovina · 42.71° N · 18.34° E

Solar position in Trebinje

Sun position, daylight and the best solar panel angle for Trebinje — computed for 42.71° N, 18.34° E, 278 m above sea level.

Sunrise today07:10105° ESE
Sunset today17:50254° WSW
Best panel angle35°year-round, facing south
Off-grid angle67°best for the darkest month

The sun right now

Azimuth180.0°
Elevation35.5°
At solar noon, 12:30Open on the sun map

Sun in Trebinje today

Saturday, 24 October 2026 · local time UTC+2

EventTimeDirection / height
Astronomical dawn05:35sun 18° below horizon
Nautical dawn06:0812° below
Civil dawn06:416° below
Sunrise07:10105° ESE
Golden hour ends07:49sun 6° up
Solar noon12:3035.5° high
Golden hour starts17:11sun 6° up
Sunset17:50254° WSW
Civil dusk18:196° below
Nautical dusk18:5212° below
Astronomical dusk19:2518° below
Day length10 h 40 min

Sun path diagram for Trebinje

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 solstice67891011121314151617181920EquinoxDecember solstice8910111213141516Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 70.7° at solar noon in Trebinje; on the December solstice only 23.9°. Sunrise swings from 56° ENE in June to 122° ESE in December — a 66° 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
January07:1011:5816:459 h 35 min27.5°
February06:3512:0017:2510 h 51 min36.8°
March05:4811:5417:5912 h 11 min47.6°
April05:5612:4519:3513 h 39 min59.2°
May05:1812:4320:0814 h 49 min67.5°
June05:0812:4820:2815 h 20 min70.7°
July05:2712:5320:1814 h 51 min67.7°
August05:5912:4919:3913 h 40 min59.3°
September06:3212:3918:4612 h 13 min47.9°
October07:0612:3117:5510 h 48 min36.5°
November06:4511:3216:199 h 34 min27.4°
December07:1311:4416:159 h 02 min23.9°

A year of daylight in Trebinje

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 Trebinje

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

35°collects the most energy over a year: 1454 kWh per kWp.

67°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 35°Best worst-month 67°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°123185%1.145.0×
15°138195%1.713.4×
30°1450100%2.162.6×
35° year-round best1454100%2.292.4×
43° = latitude144199%2.452.1×
45°143499%2.482.0×
60°133592%2.641.7×
67° off-grid best126287%2.661.5×
70°122684%2.661.5×
90°92664%2.461.6×

A fixed array in Trebinje produces the most over a year at 35°. The design month for an off-grid system is December: at 67° it makes 2.66 kWh per kWp a day, 16% more than at 35°, and costs 13% of the yearly total. Why steep panels win winter.

Off-grid solar in Trebinje at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 35° (year-round best).

0123456January: 2.75 (70°)2.7JanFebruary: 3.04 (70°)3.0FebMarch: 3.57 (70°)3.6MarApril: 3.56 (70°)3.6AprMay: 3.40 (70°)3.4MayJune: 3.35 (70°)3.3JunJuly: 3.54 (70°)3.5JulAugust: 3.92 (70°)3.9AugSeptember: 3.92 (70°)3.9SepOctober: 3.72 (70°)3.7OctNovember: 2.89 (70°)2.9NovDecember: 2.66 (70°)2.7Dec35°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 35°Mean temp.
January1.653.102.752.444.6 °C
February2.383.433.042.985.3 °C
March3.614.083.573.917.9 °C
April4.864.133.564.4911.5 °C
May5.944.013.404.8615.6 °C
June6.854.023.355.2019.8 °C
July7.074.303.545.4122.7 °C
August6.234.753.925.2823.1 °C
September4.524.663.924.5118.7 °C
October3.114.353.723.7314.5 °C
November1.893.332.892.6310.5 °C
December1.453.012.662.296.1 °C
Year4.14 avg3.93 avg1226 kWh1454 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 440 Wp of panels at 70°, versus 520 Wp at 35°. The steep array is 14% smaller for the same winter. Size your own system.

Row spacing in Trebinje

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.

5.7 mrow pitch at 70°

4.7 mrow pitch at 35°

Row spacing calculator

How Trebinje compares in Bosnia and Herzegovina

Against the other 22 places in Bosnia and Herzegovina with climate data, for a fixed array at its best angle.

1stof 23 places in Bosnia and Herzegovina for sunshine: 4.14 peak sun hours a day on flat ground.

+11%solar energy a year compared with the average place in Bosnia and Herzegovina: 1,454 against 1,304 kWh per kWp.

−8 mindaylight on the longest day, compared with Sarajevo: 15 h 20 min against 15 h 28 min.

35°best year-round tilt here, the same everywhere in Bosnia and Herzegovina.

Trebinje gets the most sun of the 23 places in Bosnia and Herzegovina (4.14 peak sun hours a day); the least sunny is Banja Luka with 3.60. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.66 kWh a day here, against 2.08 kWh on average in Bosnia and Herzegovina. The shortest day lasts 9 h 02 min, +8 min compared with Sarajevo.

The sunniest places in Bosnia and Herzegovina

Solar forecast for Trebinje, 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 Trebinje

What is the best solar panel angle in Trebinje?
For a fixed array facing south, the best year-round tilt in Trebinje is 35°, worth about 1454 kWh per kWp a year. An off-grid system that has to get through December does better at about 67°.
What time is sunrise and sunset in Trebinje today?
On 24 October 2026 the sun rises at 07:10 and sets at 17:50 local time (UTC+2), giving 10 h 40 min of daylight. Solar noon is at 12:30.
How many peak sun hours does Trebinje get?
On a flat surface 4.1 hours a day averaged over the year, from 1.5 in December to 7.1 in July. Panels tilted at 70° receive 3.0 sun hours a day in December.
How high does the sun get in Trebinje?
At solar noon the sun stands 70.7° above the horizon on the June solstice and 23.9° on the December solstice.
Is Trebinje a good place for solar panels?
With 4.1 peak sun hours a day on flat ground, Trebinje ranks 1st of 23 places in Bosnia and Herzegovina for sunshine. A 1 kWp array at the best angle (35°) makes about 1,454 kWh a year here, 11% more than the average place in Bosnia and Herzegovina.

Places near Trebinje

All places in Bosnia and Herzegovina

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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.