Tamil Nadu · India · 10.79° N · 78.77° E
Solar position in Tiruverumbūr
Sun position, daylight and the best solar panel angle for Tiruverumbūr — computed for 10.79° N, 78.77° E, 72 m above sea level.
The sun right now
Sun in Tiruverumbūr today
Sunday, 25 October 2026 · local time UTC+5:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:53 | sun 18° below horizon |
| Nautical dawn | 05:18 | 12° below |
| Civil dawn | 05:43 | 6° below |
| Sunrise | 06:04 | 102° ESE |
| Golden hour ends | 06:33 | sun 6° up |
| Solar noon | 11:58 | 67.1° high |
| Golden hour starts | 17:24 | sun 6° up |
| Sunset | 17:53 | 258° WSW |
| Civil dusk | 18:14 | 6° below |
| Nautical dusk | 18:39 | 12° below |
| Astronomical dusk | 19:04 | 18° below |
| Day length | 11 h 48 min | |
Sun path diagram for Tiruverumbūr
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 77.4° at solar noon in Tiruverumbūr; on the December solstice only 55.8°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 48° 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 | 06:38 | 12:26 | 18:14 | 11 h 36 min | 59.3° |
| February | 06:33 | 12:28 | 18:23 | 11 h 51 min | 68.7° |
| March | 06:18 | 12:22 | 18:25 | 12 h 07 min | 79.5° |
| April | 06:01 | 12:13 | 18:26 | 12 h 25 min | 88.9° |
| May | 05:51 | 12:11 | 18:31 | 12 h 39 min | 80.6° |
| June | 05:53 | 12:16 | 18:39 | 12 h 45 min | 77.4° |
| July | 06:01 | 12:21 | 18:41 | 12 h 40 min | 80.3° |
| August | 06:05 | 12:18 | 18:30 | 12 h 26 min | 88.7° |
| September | 06:04 | 12:08 | 18:11 | 12 h 08 min | 79.9° |
| October | 06:04 | 11:59 | 17:54 | 11 h 50 min | 68.5° |
| November | 06:12 | 12:00 | 17:48 | 11 h 36 min | 59.3° |
| December | 06:28 | 12:12 | 17:57 | 11 h 30 min | 55.8° |
A year of daylight in Tiruverumbūr
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 Tiruverumbūr
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
9°collects the most energy over a year: 1596 kWh per kWp.
23°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 | November kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1579 | 99% | 3.37 | 1.5× |
| 9° year-round best | 1596 | 100% | 3.57 | 1.4× |
| 11° = latitude | 1596 | 100% | 3.61 | 1.4× |
| 15° | 1590 | 100% | 3.67 | 1.4× |
| 23° off-grid best | 1560 | 98% | 3.74 | 1.4× |
| 30° | 1514 | 95% | 3.77 | 1.5× |
| 45° | 1356 | 85% | 3.66 | 1.8× |
| 60° | 1128 | 71% | 3.36 | 2.4× |
| 70° | 951 | 60% | 3.06 | 3.0× |
| 90° | 641 | 40% | 2.25 | 2.9× |
A fixed array in Tiruverumbūr produces the most over a year at 9°. The design month for an off-grid system is November: at 23° it makes 3.74 kWh per kWp a day, 5% more than at 9°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Tiruverumbūr at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 9° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 9° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.10 | 4.91 | 4.04 | 4.38 | 24.2 °C |
| February | 5.96 | 4.84 | 3.96 | 4.99 | 26.2 °C |
| March | 6.39 | 3.95 | 3.18 | 5.12 | 29.1 °C |
| April | 6.46 | 2.74 | 2.17 | 4.97 | 30.8 °C |
| May | 6.06 | 1.95 | 1.52 | 4.57 | 30.4 °C |
| June | 5.73 | 1.73 | 1.34 | 4.29 | 29.4 °C |
| July | 5.52 | 1.85 | 1.45 | 4.17 | 29.1 °C |
| August | 5.65 | 2.30 | 1.82 | 4.35 | 28.7 °C |
| September | 5.63 | 3.13 | 2.51 | 4.46 | 28.2 °C |
| October | 4.92 | 3.57 | 2.90 | 4.02 | 27.0 °C |
| November | 4.24 | 3.73 | 3.06 | 3.57 | 25.1 °C |
| December | 4.24 | 4.14 | 3.41 | 3.64 | 23.9 °C |
| Year | 5.49 avg | 3.23 avg | 951 kWh | 1596 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 880 Wp of panels at 70°, versus 330 Wp at 9°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Tiruverumbūr
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.
2.1 mrow pitch at 70°
2.2 mrow pitch at 9°
How Tiruverumbūr compares in India
Against the other 3,734 places in India with climate data, for a fixed array at its best angle.
204thof 3,735 places in India for sunshine, shared: 5.49 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in India: 1,596 against 1,575 kWh per kWp.
−31 mindaylight on the longest day, compared with Mumbai: 12 h 45 min against 13 h 17 min.
9°best year-round tilt here; across India it runs from 8° in Tirunelveli to 33° in Leh.
Of the 3,735 places in India, Balotra gets the most sun (5.73 peak sun hours a day) and Jining the least (3.68); Tiruverumbūr ranks joint 204th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.34 kWh a day here, against 1.70 kWh on average in India. The shortest day lasts 11 h 30 min, +31 min compared with Mumbai.
Solar forecast for Tiruverumbūr, 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 Tiruverumbūr
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A free, live card for Tiruverumbūr: 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.