Anseba · Eritrea · 15.78° N · 38.45° E
Solar position in Keren
Sun position, daylight and the best solar panel angle for Keren — computed for 15.78° N, 38.45° E, 1399 m above sea level.
The sun right now
Sun in Keren today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:07 | sun 18° below horizon |
| Nautical dawn | 05:33 | 12° below |
| Civil dawn | 05:58 | 6° below |
| Sunrise | 06:20 | 102° ESE |
| Golden hour ends | 06:49 | sun 6° up |
| Solar noon | 12:10 | 62.4° high |
| Golden hour starts | 17:31 | sun 6° up |
| Sunset | 18:00 | 258° WSW |
| Civil dusk | 18:22 | 6° below |
| Nautical dusk | 18:47 | 12° below |
| Astronomical dusk | 19:12 | 18° below |
| Day length | 11 h 40 min | |
Sun path diagram for Keren
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 82.3° at solar noon in Keren; on the December solstice only 50.8°. 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 | 06:57 | 12:37 | 18:17 | 11 h 21 min | 54.4° |
| February | 06:48 | 12:39 | 18:31 | 11 h 43 min | 63.7° |
| March | 06:29 | 12:33 | 18:37 | 12 h 07 min | 74.5° |
| April | 06:07 | 12:24 | 18:42 | 12 h 34 min | 86.1° |
| May | 05:55 | 12:22 | 18:50 | 12 h 55 min | 85.6° |
| June | 05:55 | 12:27 | 18:59 | 13 h 04 min | 82.3° |
| July | 06:04 | 12:32 | 19:00 | 12 h 56 min | 85.4° |
| August | 06:11 | 12:29 | 18:46 | 12 h 35 min | 86.3° |
| September | 06:15 | 12:19 | 18:23 | 12 h 08 min | 74.9° |
| October | 06:19 | 12:10 | 18:01 | 11 h 42 min | 63.5° |
| November | 06:31 | 12:11 | 17:52 | 11 h 20 min | 54.3° |
| December | 06:48 | 12:24 | 17:59 | 11 h 12 min | 50.8° |
A year of daylight in Keren
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 Keren
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: 1843 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° | 1775 | 96% | 4.41 | 1.3× |
| 4° off-grid best | 1803 | 98% | 4.39 | 1.3× |
| 15° | 1842 | 100% | 4.27 | 1.3× |
| 16° = latitude | 1842 | 100% | 4.25 | 1.3× |
| 17° year-round best | 1843 | 100% | 4.23 | 1.3× |
| 30° | 1803 | 98% | 3.90 | 1.5× |
| 45° | 1663 | 90% | 3.34 | 1.8× |
| 60° | 1432 | 78% | 2.61 | 2.3× |
| 70° | 1239 | 67% | 2.07 | 2.9× |
| 90° | 846 | 46% | 1.16 | 3.5× |
A fixed array in Keren produces the most over a year at 17°. The design month for an off-grid system is August: at 4° it makes 4.39 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 Keren 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 | 5.33 | 5.92 | 4.91 | 5.06 | 22.2 °C |
| February | 6.01 | 5.43 | 4.48 | 5.35 | 23.7 °C |
| March | 6.74 | 4.63 | 3.78 | 5.59 | 25.7 °C |
| April | 7.11 | 3.33 | 2.68 | 5.47 | 27.8 °C |
| May | 7.00 | 2.46 | 1.95 | 5.09 | 29.4 °C |
| June | 6.61 | 2.21 | 1.74 | 4.73 | 29.1 °C |
| July | 5.81 | 2.21 | 1.77 | 4.28 | 26.0 °C |
| August | 5.51 | 2.56 | 2.07 | 4.23 | 24.6 °C |
| September | 6.31 | 3.81 | 3.10 | 5.08 | 26.0 °C |
| October | 6.29 | 5.16 | 4.23 | 5.44 | 25.4 °C |
| November | 5.64 | 6.02 | 4.96 | 5.26 | 24.0 °C |
| December | 5.21 | 6.19 | 5.13 | 5.04 | 22.4 °C |
| Year | 6.13 avg | 4.15 avg | 1239 kWh | 1843 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 680 Wp of panels at 70°, versus 280 Wp at 17°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Keren
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 Keren compares in Eritrea
Against the other 6 places in Eritrea with climate data, for a fixed array at its best angle.
3rdof 7 places in Eritrea for sunshine: 6.13 peak sun hours a day on flat ground.
+2%solar energy a year compared with the average place in Eritrea: 1,842 against 1,815 kWh per kWp.
+2 mindaylight on the longest day, compared with Asmara: 13 h 04 min against 13 h 02 min.
17°best year-round tilt here; across Eritrea it runs from 14° in Assab to 17° in Keren.
Of the 7 places in Eritrea, Barentu gets the most sun (6.37 peak sun hours a day) and Massawa the least (5.66); Keren ranks 3rd. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.74 kWh a day here, against 1.64 kWh on average in Eritrea. The shortest day lasts 11 h 12 min, −2 min compared with Asmara.
Solar forecast for Keren, 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 Keren
What is the best solar panel angle in Keren?
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Places near Keren
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A free, live card for Keren: 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.