Gash-Barka · Eritrea · 15.11° N · 37.59° E
Solar position in Barentu
Sun position, daylight and the best solar panel angle for Barentu — computed for 15.11° N, 37.59° E, 1009 m above sea level.
The sun right now
Sun in Barentu today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:11 | sun 18° below horizon |
| Nautical dawn | 05:36 | 12° below |
| Civil dawn | 06:01 | 6° below |
| Sunrise | 06:23 | 102° ESE |
| Golden hour ends | 06:52 | sun 6° up |
| Solar noon | 12:13 | 63.1° high |
| Golden hour starts | 17:35 | sun 6° up |
| Sunset | 18:04 | 258° WSW |
| Civil dusk | 18:26 | 6° below |
| Nautical dusk | 18:51 | 12° below |
| Astronomical dusk | 19:16 | 18° below |
| Day length | 11 h 41 min | |
Sun path diagram for Barentu
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 81.7° at solar noon in Barentu; on the December solstice only 51.5°. Sunrise swings from 65° ENE in June to 114° ESE in December — a 49° 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 | 06:59 | 12:40 | 18:22 | 11 h 23 min | 55.0° |
| February | 06:51 | 12:43 | 18:35 | 11 h 44 min | 64.4° |
| March | 06:33 | 12:36 | 18:40 | 12 h 07 min | 75.2° |
| April | 06:11 | 12:28 | 18:44 | 12 h 33 min | 86.8° |
| May | 05:59 | 12:26 | 18:52 | 12 h 53 min | 84.9° |
| June | 06:00 | 12:31 | 19:02 | 13 h 01 min | 81.7° |
| July | 06:09 | 12:36 | 19:02 | 12 h 54 min | 84.7° |
| August | 06:16 | 12:32 | 18:49 | 12 h 33 min | 86.9° |
| September | 06:18 | 12:22 | 18:26 | 12 h 08 min | 75.5° |
| October | 06:22 | 12:14 | 18:05 | 11 h 43 min | 64.1° |
| November | 06:34 | 12:15 | 17:56 | 11 h 22 min | 55.0° |
| December | 06:50 | 12:27 | 18:04 | 11 h 14 min | 51.5° |
A year of daylight in Barentu
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 Barentu
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
17°collects the most energy over a year: 1902 kWh per kWp.
4°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 | August kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1829 | 96% | 4.61 | 1.3× |
| 4° off-grid best | 1859 | 98% | 4.59 | 1.2× |
| 15° = latitude | 1900 | 100% | 4.45 | 1.3× |
| 17° year-round best | 1902 | 100% | 4.41 | 1.3× |
| 30° | 1861 | 98% | 4.05 | 1.5× |
| 45° | 1713 | 90% | 3.44 | 1.9× |
| 60° | 1470 | 77% | 2.66 | 2.6× |
| 70° | 1267 | 67% | 2.09 | 3.4× |
| 90° | 858 | 45% | 1.16 | 4.1× |
A fixed array in Barentu produces the most over a year at 17°. The design month for an off-grid system is August: at 4° it makes 4.59 kWh per kWp a day, 4% more than at 17°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Barentu at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 17° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 17° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.72 | 6.53 | 5.34 | 5.42 | 25.1 °C |
| February | 6.36 | 5.79 | 4.71 | 5.62 | 27.1 °C |
| March | 7.02 | 4.74 | 3.82 | 5.75 | 29.1 °C |
| April | 7.30 | 3.26 | 2.59 | 5.50 | 31.3 °C |
| May | 7.11 | 2.32 | 1.82 | 5.09 | 31.7 °C |
| June | 6.85 | 2.08 | 1.63 | 4.85 | 29.8 °C |
| July | 6.06 | 2.17 | 1.73 | 4.44 | 26.2 °C |
| August | 5.76 | 2.58 | 2.09 | 4.41 | 24.5 °C |
| September | 6.47 | 3.81 | 3.10 | 5.20 | 26.2 °C |
| October | 6.39 | 5.20 | 4.22 | 5.48 | 27.7 °C |
| November | 5.89 | 6.36 | 5.17 | 5.46 | 26.8 °C |
| December | 5.53 | 6.74 | 5.51 | 5.34 | 25.4 °C |
| Year | 6.37 avg | 4.29 avg | 1267 kWh | 1902 kWh |
Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 720 Wp of panels at 70°, versus 270 Wp at 17°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Barentu
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.
2.4 mrow pitch at 70°
2.4 mrow pitch at 17°
How Barentu compares in Eritrea
Against the other 6 places in Eritrea with climate data, for a fixed array at its best angle.
1stof 7 places in Eritrea for sunshine: 6.37 peak sun hours a day on flat ground.
+5%solar energy a year compared with the average place in Eritrea: 1,902 against 1,815 kWh per kWp.
−1 mindaylight on the longest day, compared with Asmara: 13 h 01 min against 13 h 02 min.
17°best year-round tilt here; across Eritrea it runs from 14° in Assab to 17° in Keren.
Barentu gets the most sun of the 7 places in Eritrea (6.37 peak sun hours a day); the least sunny is Massawa with 5.66. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.63 kWh a day here, against 1.64 kWh on average in Eritrea. The shortest day lasts 11 h 14 min, +1 min compared with Asmara.
Solar forecast for Barentu, 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 Barentu
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Places near Barentu
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A free, live card for Barentu: 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.