Gujarat · India · 21.20° N · 72.83° E
Solar position in Surat
Sun position, daylight and the best solar panel angle for Surat — computed for 21.20° N, 72.83° E, 20 m above sea level.
The sun right now
Sun in Surat today
Saturday, 24 October 2026 · local time UTC+5:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:23 | sun 18° below horizon |
| Nautical dawn | 05:49 | 12° below |
| Civil dawn | 06:15 | 6° below |
| Sunrise | 06:37 | 102° ESE |
| Golden hour ends | 07:07 | sun 6° up |
| Solar noon | 12:22 | 57.0° high |
| Golden hour starts | 17:37 | sun 6° up |
| Sunset | 18:07 | 258° WSW |
| Civil dusk | 18:30 | 6° below |
| Nautical dusk | 18:56 | 12° below |
| Astronomical dusk | 19:22 | 18° below |
| Day length | 11 h 30 min | |
Sun path diagram for Surat
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 87.8° at solar noon in Surat; on the December solstice only 45.4°. Sunrise swings from 64° ENE in June to 115° ESE in December — a 51° 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 | 07:18 | 12:50 | 18:21 | 11 h 03 min | 48.9° |
| February | 07:05 | 12:52 | 18:39 | 11 h 34 min | 58.3° |
| March | 06:42 | 12:45 | 18:49 | 12 h 08 min | 69.1° |
| April | 06:15 | 12:37 | 18:59 | 12 h 45 min | 80.7° |
| May | 05:58 | 12:35 | 19:12 | 13 h 13 min | 89.0° |
| June | 05:57 | 12:40 | 19:23 | 13 h 25 min | 87.8° |
| July | 06:07 | 12:45 | 19:22 | 13 h 14 min | 89.3° |
| August | 06:19 | 12:41 | 19:04 | 12 h 45 min | 80.9° |
| September | 06:27 | 12:31 | 18:36 | 12 h 09 min | 69.5° |
| October | 06:36 | 12:23 | 18:09 | 11 h 33 min | 58.1° |
| November | 06:52 | 12:24 | 17:55 | 11 h 03 min | 48.9° |
| December | 07:11 | 12:36 | 18:01 | 10 h 51 min | 45.4° |
A year of daylight in Surat
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 Surat
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
23°collects the most energy over a year: 1646 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 | July kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1532 | 93% | 3.18 | 1.8× |
| 4° off-grid best | 1568 | 95% | 3.17 | 1.8× |
| 15° | 1631 | 99% | 3.08 | 1.8× |
| 21° = latitude | 1645 | 100% | 3.00 | 1.9× |
| 23° year-round best | 1646 | 100% | 2.97 | 1.9× |
| 30° | 1637 | 99% | 2.84 | 2.0× |
| 45° | 1550 | 94% | 2.47 | 2.2× |
| 60° | 1376 | 84% | 2.00 | 2.6× |
| 70° | 1219 | 74% | 1.66 | 3.0× |
| 90° | 854 | 52% | 1.11 | 3.9× |
A fixed array in Surat produces the most over a year at 23°. The design month for an off-grid system is July: at 4° it makes 3.17 kWh per kWp a day, 7% more than at 23°, and costs 5% of the yearly total. Why steep panels win winter.
Off-grid solar in Surat at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 23° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 23° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.72 | 5.93 | 4.91 | 4.88 | 22.3 °C |
| February | 5.61 | 5.76 | 4.74 | 5.33 | 24.1 °C |
| March | 6.53 | 5.05 | 4.11 | 5.58 | 27.3 °C |
| April | 7.16 | 3.80 | 3.04 | 5.48 | 30.2 °C |
| May | 7.27 | 2.82 | 2.22 | 5.15 | 31.3 °C |
| June | 5.53 | 2.34 | 1.84 | 3.92 | 29.9 °C |
| July | 4.06 | 2.10 | 1.66 | 2.97 | 27.9 °C |
| August | 4.00 | 2.33 | 1.86 | 3.03 | 27.1 °C |
| September | 4.78 | 3.26 | 2.63 | 3.86 | 27.4 °C |
| October | 5.33 | 4.82 | 3.91 | 4.76 | 27.6 °C |
| November | 4.71 | 5.48 | 4.47 | 4.64 | 25.9 °C |
| December | 4.38 | 5.78 | 4.77 | 4.59 | 23.6 °C |
| Year | 5.34 avg | 4.11 avg | 1219 kWh | 1646 kWh |
Sizing example. To run a 1 kWh-per-day load through July on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 710 Wp of panels at 70°, versus 400 Wp at 23°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Surat
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.
2.8 mrow pitch at 70°
2.7 mrow pitch at 23°
How Surat compares in India
Against the other 3,734 places in India with climate data, for a fixed array at its best angle.
1000thof 3,735 places in India for sunshine, shared: 5.34 peak sun hours a day on flat ground.
+5%solar energy a year compared with the average place in India: 1,646 against 1,575 kWh per kWp.
+9 mindaylight on the longest day, compared with Mumbai: 13 h 25 min against 13 h 17 min.
23°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); Surat ranks joint 1000th. In its darkest month, July, 1 kWp of off-grid panels at 70° makes 1.66 kWh a day here, against 1.70 kWh on average in India. The shortest day lasts 10 h 51 min, −8 min compared with Mumbai.
Solar forecast for Surat, 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 Surat
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Places near Surat
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A free, live card for Surat: 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.