Iran · 32.65° N · 51.67° E
Solar position in Isfahan
Sun position, daylight and the best solar panel angle for Isfahan — computed for 32.65° N, 51.67° E, 1578 m above sea level.
The sun right now
Sun in Isfahan today
Saturday, 24 October 2026 · local time UTC+3:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:51 | sun 18° below horizon |
| Nautical dawn | 05:20 | 12° below |
| Civil dawn | 05:48 | 6° below |
| Sunrise | 06:14 | 103° ESE |
| Golden hour ends | 06:47 | sun 6° up |
| Solar noon | 11:47 | 45.6° high |
| Golden hour starts | 16:46 | sun 6° up |
| Sunset | 17:20 | 256° WSW |
| Civil dusk | 17:45 | 6° below |
| Nautical dusk | 18:14 | 12° below |
| Astronomical dusk | 18:43 | 18° below |
| Day length | 11 h 07 min | |
Sun path diagram for Isfahan
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 80.8° at solar noon in Isfahan; on the December solstice only 33.9°. Sunrise swings from 61° ENE in June to 118° ESE in December — a 56° 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 | 07:03 | 12:14 | 17:25 | 10 h 22 min | 37.5° |
| February | 06:40 | 12:17 | 17:53 | 11 h 13 min | 46.9° |
| March | 06:06 | 12:10 | 18:15 | 12 h 09 min | 57.7° |
| April | 05:27 | 12:02 | 18:37 | 13 h 10 min | 69.3° |
| May | 05:01 | 11:59 | 18:59 | 13 h 58 min | 77.6° |
| June | 04:56 | 12:05 | 19:14 | 14 h 18 min | 80.8° |
| July | 05:09 | 12:09 | 19:09 | 13 h 59 min | 77.8° |
| August | 05:30 | 12:06 | 18:41 | 13 h 11 min | 69.4° |
| September | 05:50 | 11:56 | 18:01 | 12 h 11 min | 58.0° |
| October | 06:11 | 11:47 | 17:23 | 11 h 12 min | 46.6° |
| November | 06:38 | 11:48 | 16:59 | 10 h 21 min | 37.4° |
| December | 07:01 | 12:01 | 17:01 | 10 h 00 min | 33.9° |
A year of daylight in Isfahan
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 Isfahan
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
30°collects the most energy over a year: 1933 kWh per kWp.
46°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° | 1710 | 88% | 2.58 | 2.6× |
| 15° | 1878 | 97% | 3.56 | 1.8× |
| 30° year-round best | 1933 | 100% | 4.30 | 1.4× |
| 33° = latitude | 1931 | 100% | 4.41 | 1.3× |
| 45° | 1874 | 97% | 4.76 | 1.2× |
| 46° off-grid best | 1866 | 97% | 4.78 | 1.2× |
| 60° | 1706 | 88% | 4.92 | 1.4× |
| 70° | 1539 | 80% | 4.85 | 1.7× |
| 90° | 1108 | 57% | 4.29 | 3.1× |
A fixed array in Isfahan produces the most over a year at 30°. The design month for an off-grid system is December: at 46° it makes 4.78 kWh per kWp a day, 11% more than at 30°, and costs 3% of the yearly total. Why steep panels win winter.
Off-grid solar in Isfahan at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 30° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 30° | Mean temp. |
|---|---|---|---|---|---|
| January | 3.32 | 5.37 | 4.83 | 4.43 | 1.5 °C |
| February | 4.33 | 5.54 | 4.95 | 5.05 | 3.5 °C |
| March | 5.52 | 5.37 | 4.71 | 5.56 | 8.1 °C |
| April | 6.23 | 4.37 | 3.75 | 5.36 | 13.1 °C |
| May | 7.34 | 3.92 | 3.27 | 5.60 | 19.3 °C |
| June | 8.34 | 3.65 | 2.98 | 5.84 | 25.0 °C |
| July | 7.92 | 3.79 | 3.06 | 5.64 | 27.3 °C |
| August | 7.53 | 4.55 | 3.71 | 5.88 | 25.8 °C |
| September | 6.50 | 5.57 | 4.62 | 5.89 | 22.0 °C |
| October | 5.01 | 5.89 | 5.01 | 5.36 | 15.9 °C |
| November | 3.66 | 5.61 | 4.93 | 4.63 | 7.6 °C |
| December | 3.10 | 5.42 | 4.85 | 4.30 | 3.1 °C |
| Year | 5.74 avg | 4.92 avg | 1539 kWh | 1933 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 400 Wp of panels at 70°, versus 270 Wp at 30°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Isfahan
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.
3.8 mrow pitch at 70°
3.4 mrow pitch at 30°
How Isfahan compares in Iran
Against the other 422 places in Iran with climate data, for a fixed array at its best angle.
107thof 423 places in Iran for sunshine, shared: 5.74 peak sun hours a day on flat ground.
+10%solar energy a year compared with the average place in Iran: 1,933 against 1,760 kWh per kWp.
−17 mindaylight on the longest day, compared with Tehran: 14 h 18 min against 14 h 35 min.
30°best year-round tilt here; across Iran it runs from 24° in Kīsh to 33° in Khūy.
Of the 423 places in Iran, Jālq gets the most sun (6.10 peak sun hours a day) and Bandar-e Anzalī the least (3.92); Isfahan ranks joint 107th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 2.98 kWh a day here, against 2.96 kWh on average in Iran. The shortest day lasts 10 h 00 min, +16 min compared with Tehran.
Solar forecast for Isfahan, 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 Isfahan
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Places near Isfahan
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A free, live card for Isfahan: 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.