Odesa · Ukraine · 45.45° N · 28.28° E
Solar position in Reni
Sun position, daylight and the best solar panel angle for Reni — computed for 45.45° N, 28.28° E, 24 m above sea level.
The sun right now
Sun in Reni today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:55 | sun 18° below horizon |
| Nautical dawn | 06:30 | 12° below |
| Civil dawn | 07:04 | 6° below |
| Sunrise | 07:34 | 106° ESE |
| Golden hour ends | 08:16 | sun 6° up |
| Solar noon | 12:50 | 32.7° high |
| Golden hour starts | 17:25 | sun 6° up |
| Sunset | 18:06 | 254° WSW |
| Civil dusk | 18:36 | 6° below |
| Nautical dusk | 19:11 | 12° below |
| Astronomical dusk | 19:45 | 18° below |
| Day length | 10 h 32 min | |
Sun path diagram for Reni
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 68.0° at solar noon in Reni; on the December solstice only 21.1°. Sunrise swings from 54° NE in June to 124° ESE in December — a 69° 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 | 07:39 | 12:18 | 16:57 | 9 h 19 min | 24.7° |
| February | 06:59 | 12:20 | 17:42 | 10 h 43 min | 34.1° |
| March | 06:08 | 12:14 | 18:20 | 12 h 12 min | 44.9° |
| April | 06:11 | 13:05 | 20:00 | 13 h 49 min | 56.5° |
| May | 05:30 | 13:03 | 20:37 | 15 h 07 min | 64.8° |
| June | 05:18 | 13:08 | 20:59 | 15 h 41 min | 68.0° |
| July | 05:38 | 13:13 | 20:47 | 15 h 09 min | 65.0° |
| August | 06:14 | 13:09 | 20:04 | 13 h 50 min | 56.6° |
| September | 06:52 | 12:59 | 19:06 | 12 h 14 min | 45.2° |
| October | 07:30 | 12:51 | 18:11 | 10 h 41 min | 33.8° |
| November | 07:13 | 11:52 | 16:31 | 9 h 18 min | 24.6° |
| December | 07:43 | 12:04 | 16:26 | 8 h 43 min | 21.1° |
A year of daylight in Reni
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 Reni
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: 1326 kWh per kWp.
70°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° | 1117 | 84% | 0.84 | 6.2× |
| 15° | 1255 | 95% | 1.24 | 4.2× |
| 30° | 1321 | 100% | 1.58 | 3.2× |
| 35° year-round best | 1326 | 100% | 1.68 | 3.0× |
| 45° = latitude | 1311 | 99% | 1.83 | 2.6× |
| 60° | 1226 | 92% | 1.97 | 2.2× |
| 70° off-grid best | 1132 | 85% | 2.00 | 1.9× |
| 90° | 867 | 65% | 1.89 | 1.6× |
A fixed array in Reni produces the most over a year at 35°. The design month for an off-grid system is December: at 70° it makes 2.00 kWh per kWp a day, 19% more than at 35°, and costs 15% of the yearly total. Why steep panels win winter.
Off-grid solar in Reni 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 | 1.24 | 2.36 | 2.13 | 1.84 | -1.7 °C |
| February | 2.05 | 2.98 | 2.67 | 2.60 | 0.5 °C |
| March | 3.30 | 3.88 | 3.42 | 3.67 | 5.7 °C |
| April | 4.79 | 4.28 | 3.69 | 4.53 | 11.4 °C |
| May | 5.93 | 4.21 | 3.53 | 4.91 | 18.0 °C |
| June | 6.41 | 4.04 | 3.32 | 4.94 | 22.7 °C |
| July | 6.41 | 4.20 | 3.42 | 4.99 | 25.3 °C |
| August | 5.76 | 4.64 | 3.80 | 4.95 | 25.0 °C |
| September | 4.19 | 4.52 | 3.79 | 4.25 | 19.1 °C |
| October | 2.63 | 3.75 | 3.23 | 3.19 | 12.2 °C |
| November | 1.43 | 2.49 | 2.19 | 1.98 | 6.2 °C |
| December snow | 1.06 | 2.23 | 2.00 | 1.68 | 0.2 °C |
| Year | 3.78 avg | 3.63 avg | 1132 kWh | 1326 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 590 Wp of panels at 70°, versus 700 Wp at 35°. The steep array is 16% smaller for the same winter. Size your own system.
Row spacing in Reni
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.
6.5 mrow pitch at 70°
5.2 mrow pitch at 35°
How Reni compares in Ukraine
Against the other 271 places in Ukraine with climate data, for a fixed array at its best angle.
25thof 272 places in Ukraine for sunshine, shared: 3.78 peak sun hours a day on flat ground.
+7%solar energy a year compared with the average place in Ukraine: 1,326 against 1,242 kWh per kWp.
−46 mindaylight on the longest day, compared with Kyiv: 15 h 41 min against 16 h 27 min.
35°best year-round tilt here; across Ukraine it runs from 33° in Sevastopol to 40° in Novhorod-Siverskyi.
Of the 272 places in Ukraine, Balaklava and one other place get the most sun (4.05 peak sun hours a day) and Mostyska and 2 other places the least (3.11); Reni ranks joint 25th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.00 kWh a day here, against 1.38 kWh on average in Ukraine. The shortest day lasts 8 h 43 min, +43 min compared with Kyiv.
Solar forecast for Reni, 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 Reni
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Places near Reni
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A free, live card for Reni: 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.