Kvemo Kartli · Georgia · 41.56° N · 44.98° E
Solar position in Rustavi
Sun position, daylight and the best solar panel angle for Rustavi — computed for 41.56° N, 44.98° E, 345 m above sea level.
The sun right now
Sun in Rustavi today
Saturday, 24 October 2026 · local time UTC+4
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:49 | sun 18° below horizon |
| Nautical dawn | 06:21 | 12° below |
| Civil dawn | 06:53 | 6° below |
| Sunrise | 07:22 | 105° ESE |
| Golden hour ends | 08:00 | sun 6° up |
| Solar noon | 12:44 | 36.7° high |
| Golden hour starts | 17:27 | sun 6° up |
| Sunset | 18:05 | 255° WSW |
| Civil dusk | 18:34 | 6° below |
| Nautical dusk | 19:06 | 12° below |
| Astronomical dusk | 19:38 | 18° below |
| Day length | 10 h 44 min | |
Sun path diagram for Rustavi
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 71.9° at solar noon in Rustavi; on the December solstice only 25.0°. Sunrise swings from 57° ENE in June to 121° ESE in December — a 64° 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 | 08:21 | 13:11 | 18:01 | 9 h 41 min | 28.6° |
| February | 07:47 | 13:13 | 18:40 | 10 h 53 min | 38.0° |
| March | 07:02 | 13:07 | 19:13 | 12 h 11 min | 48.8° |
| April | 06:11 | 12:58 | 19:46 | 13 h 35 min | 60.4° |
| May | 05:35 | 12:56 | 20:18 | 14 h 43 min | 68.7° |
| June | 05:26 | 13:01 | 20:37 | 15 h 12 min | 71.9° |
| July | 05:44 | 13:06 | 20:28 | 14 h 44 min | 68.9° |
| August | 06:14 | 13:03 | 19:51 | 13 h 36 min | 60.5° |
| September | 06:46 | 12:52 | 18:59 | 12 h 13 min | 49.1° |
| October | 07:18 | 12:44 | 18:10 | 10 h 52 min | 37.7° |
| November | 07:55 | 12:45 | 17:35 | 9 h 40 min | 28.5° |
| December | 08:23 | 12:58 | 17:32 | 9 h 10 min | 25.0° |
A year of daylight in Rustavi
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 Rustavi
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: 1374 kWh per kWp.
65°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° | 1167 | 85% | 1.33 | 3.9× |
| 15° | 1306 | 95% | 1.91 | 2.7× |
| 30° | 1370 | 100% | 2.38 | 2.1× |
| 35° year-round best | 1374 | 100% | 2.51 | 1.9× |
| 42° = latitude | 1365 | 99% | 2.65 | 1.7× |
| 45° | 1357 | 99% | 2.70 | 1.6× |
| 60° | 1267 | 92% | 2.85 | 1.4× |
| 65° off-grid best | 1221 | 89% | 2.86 | 1.3× |
| 70° | 1168 | 85% | 2.85 | 1.3× |
| 90° | 895 | 65% | 2.61 | 1.5× |
A fixed array in Rustavi produces the most over a year at 35°. The design month for an off-grid system is December: at 65° it makes 2.86 kWh per kWp a day, 14% more than at 35°, and costs 11% of the yearly total. Why steep panels win winter.
Off-grid solar in Rustavi at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 35° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 35° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.86 | 3.37 | 3.04 | 2.70 | 0.2 °C |
| February | 2.70 | 3.74 | 3.36 | 3.34 | 1.7 °C |
| March | 3.48 | 3.74 | 3.29 | 3.66 | 6.3 °C |
| April | 4.39 | 3.62 | 3.12 | 3.97 | 10.8 °C |
| May | 5.42 | 3.64 | 3.06 | 4.38 | 16.6 °C |
| June | 6.33 | 3.76 | 3.10 | 4.77 | 21.7 °C |
| July | 6.17 | 3.83 | 3.12 | 4.68 | 24.8 °C |
| August | 5.62 | 4.22 | 3.45 | 4.67 | 24.5 °C |
| September | 4.34 | 4.30 | 3.60 | 4.20 | 19.5 °C |
| October | 2.98 | 3.88 | 3.34 | 3.42 | 13.2 °C |
| November | 2.05 | 3.52 | 3.11 | 2.86 | 6.4 °C |
| December | 1.64 | 3.18 | 2.85 | 2.51 | 1.5 °C |
| Year | 3.92 avg | 3.73 avg | 1168 kWh | 1374 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 410 Wp of panels at 70°, versus 470 Wp at 35°. The steep array is 12% smaller for the same winter. Size your own system.
Row spacing in Rustavi
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.
5.4 mrow pitch at 70°
4.5 mrow pitch at 35°
How Rustavi compares in Georgia
Against the other 16 places in Georgia with climate data, for a fixed array at its best angle.
2ndof 17 places in Georgia for sunshine: 3.92 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in Georgia: 1,374 against 1,363 kWh per kWp.
−1 mindaylight on the longest day, compared with Tbilisi: 15 h 12 min against 15 h 12 min.
35°best year-round tilt here; across Georgia it runs from 34° in Batumi to 36° in Kutaisi.
Of the 17 places in Georgia, Akhaltsikhe gets the most sun (3.98 peak sun hours a day) and Batumi the least (3.77); Rustavi ranks 2nd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.85 kWh a day here, against 2.68 kWh on average in Georgia. The shortest day lasts 9 h 10 min, +1 min compared with Tbilisi.
Solar forecast for Rustavi, 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 Rustavi
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Places near Rustavi
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A free, live card for Rustavi: 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.