Medenine Governorate · Tunisia · 33.50° N · 11.11° E
Solar position in Zarzis
Sun position, daylight and the best solar panel angle for Zarzis — computed for 33.50° N, 11.11° E, 11 m above sea level.
The sun right now
Sun in Zarzis today
Saturday, 24 October 2026 · local time UTC+1
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:04 | sun 18° below horizon |
| Nautical dawn | 05:32 | 12° below |
| Civil dawn | 06:02 | 6° below |
| Sunrise | 06:27 | 104° ESE |
| Golden hour ends | 07:01 | sun 6° up |
| Solar noon | 11:59 | 44.7° high |
| Golden hour starts | 16:57 | sun 6° up |
| Sunset | 17:31 | 256° WSW |
| Civil dusk | 17:57 | 6° below |
| Nautical dusk | 18:26 | 12° below |
| Astronomical dusk | 18:54 | 18° below |
| Day length | 11 h 04 min | |
Sun path diagram for Zarzis
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 79.9° at solar noon in Zarzis; on the December solstice only 33.1°. Sunrise swings from 61° ENE in June to 118° ESE in December — a 57° 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 | 07:17 | 12:26 | 17:36 | 10 h 18 min | 36.7° |
| February | 06:53 | 12:29 | 18:05 | 11 h 12 min | 46.0° |
| March | 06:18 | 12:22 | 18:27 | 12 h 10 min | 56.8° |
| April | 05:38 | 12:14 | 18:50 | 13 h 13 min | 68.5° |
| May | 05:11 | 12:12 | 19:13 | 14 h 02 min | 76.7° |
| June | 05:06 | 12:17 | 19:28 | 14 h 23 min | 79.9° |
| July | 05:20 | 12:21 | 19:23 | 14 h 03 min | 76.9° |
| August | 05:42 | 12:18 | 18:54 | 13 h 13 min | 68.5° |
| September | 06:02 | 12:08 | 18:13 | 12 h 11 min | 57.1° |
| October | 06:24 | 11:59 | 17:35 | 11 h 10 min | 45.7° |
| November | 06:52 | 12:01 | 17:10 | 10 h 18 min | 36.6° |
| December | 07:15 | 12:13 | 17:11 | 9 h 56 min | 33.1° |
A year of daylight in Zarzis
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 Zarzis
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
29°collects the most energy over a year: 1662 kWh per kWp.
56°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° | 1489 | 90% | 2.12 | 2.7× |
| 15° | 1622 | 98% | 2.84 | 2.0× |
| 29° year-round best | 1662 | 100% | 3.34 | 1.6× |
| 30° | 1662 | 100% | 3.37 | 1.6× |
| 34° = latitude | 1656 | 100% | 3.48 | 1.5× |
| 45° | 1605 | 97% | 3.69 | 1.3× |
| 56° off-grid best | 1505 | 91% | 3.79 | 1.2× |
| 60° | 1457 | 88% | 3.79 | 1.2× |
| 70° | 1314 | 79% | 3.72 | 1.4× |
| 90° | 947 | 57% | 3.28 | 2.4× |
A fixed array in Zarzis produces the most over a year at 29°. The design month for an off-grid system is December: at 56° it makes 3.79 kWh per kWp a day, 13% more than at 29°, and costs 9% of the yearly total. Why steep panels win winter.
Off-grid solar in Zarzis at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 29° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 29° | Mean temp. |
|---|---|---|---|---|---|
| January | 3.00 | 4.65 | 4.01 | 3.69 | 12.5 °C |
| February | 3.86 | 4.78 | 4.12 | 4.23 | 12.9 °C |
| March | 4.93 | 4.75 | 4.05 | 4.77 | 15.3 °C |
| April | 5.94 | 4.28 | 3.60 | 5.06 | 18.1 °C |
| May | 6.70 | 3.77 | 3.12 | 5.18 | 21.3 °C |
| June | 7.26 | 3.52 | 2.87 | 5.29 | 24.8 °C |
| July | 7.37 | 3.72 | 2.99 | 5.38 | 27.8 °C |
| August | 6.63 | 4.21 | 3.39 | 5.22 | 28.4 °C |
| September | 5.28 | 4.51 | 3.67 | 4.64 | 26.7 °C |
| October | 4.15 | 4.67 | 3.86 | 4.16 | 23.5 °C |
| November | 3.15 | 4.54 | 3.82 | 3.64 | 18.5 °C |
| December | 2.66 | 4.34 | 3.72 | 3.34 | 14.2 °C |
| Year | 5.08 avg | 4.31 avg | 1314 kWh | 1662 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 410 Wp of panels at 70°, versus 350 Wp at 29°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Zarzis
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.
4.0 mrow pitch at 70°
3.4 mrow pitch at 29°
How Zarzis compares in Tunisia
Against the other 125 places in Tunisia with climate data, for a fixed array at its best angle.
37thof 126 places in Tunisia for sunshine: 5.08 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in Tunisia: 1,662 against 1,645 kWh per kWp.
−19 mindaylight on the longest day, compared with Tunis: 14 h 23 min against 14 h 41 min.
29°best year-round tilt here; across Tunisia it runs from 29° in Houmt Souk to 31° in Kairouan.
Of the 126 places in Tunisia, Nefta and 2 other places get the most sun (5.54 peak sun hours a day) and Grombalia and one other place the least (4.68); Zarzis ranks 37th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.87 kWh a day here, against 3.03 kWh on average in Tunisia. The shortest day lasts 9 h 56 min, +18 min compared with Tunis.
Solar forecast for Zarzis, 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 Zarzis
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A free, live card for Zarzis: 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.