Ihorombe · Madagascar · 22.40° S · 46.13° E
Solar position in Ihosy
Sun position, daylight and the best solar panel angle for Ihosy — computed for 22.40° S, 46.13° E, 733 m above sea level.
The sun right now
Sun in Ihosy today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 03:58 | sun 18° below horizon |
| Nautical dawn | 04:26 | 12° below |
| Civil dawn | 04:53 | 6° below |
| Sunrise | 05:16 | 103° ESE |
| Golden hour ends | 05:46 | sun 6° up |
| Solar noon | 11:39 | 79.4° high |
| Golden hour starts | 17:33 | sun 6° up |
| Sunset | 18:03 | 257° WSW |
| Civil dusk | 18:26 | 6° below |
| Nautical dusk | 18:53 | 12° below |
| Astronomical dusk | 19:21 | 18° below |
| Day length | 12 h 47 min | |
Sun path diagram for Ihosy
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 44.2° at solar noon in Ihosy; on the December solstice only 89.0°. Sunrise swings from 65° ENE in June to 116° 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 | 05:28 | 12:06 | 18:44 | 13 h 16 min | 87.5° |
| February | 05:47 | 12:09 | 18:30 | 12 h 42 min | 78.1° |
| March | 05:59 | 12:02 | 18:05 | 12 h 06 min | 67.3° |
| April | 06:10 | 11:54 | 17:37 | 11 h 27 min | 55.7° |
| May | 06:23 | 11:51 | 17:20 | 10 h 58 min | 47.4° |
| June | 06:34 | 11:57 | 17:20 | 10 h 46 min | 44.2° |
| July | 06:33 | 12:02 | 17:30 | 10 h 57 min | 47.2° |
| August | 06:15 | 11:58 | 17:42 | 11 h 27 min | 55.6° |
| September | 05:46 | 11:48 | 17:51 | 12 h 05 min | 67.0° |
| October | 05:18 | 11:40 | 18:01 | 12 h 43 min | 78.4° |
| November | 05:03 | 11:41 | 18:19 | 13 h 17 min | 87.5° |
| December | 05:08 | 11:53 | 18:38 | 13 h 31 min | 89.0° |
A year of daylight in Ihosy
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 Ihosy
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
23°collects the most energy over a year: 1902 kWh per kWp.
26°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 | June kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1766 | 93% | 3.42 | 1.7× |
| 15° | 1885 | 99% | 4.35 | 1.3× |
| 22° = latitude | 1901 | 100% | 4.69 | 1.2× |
| 23° year-round best | 1902 | 100% | 4.74 | 1.2× |
| 26° off-grid best | 1900 | 100% | 4.86 | 1.2× |
| 30° | 1890 | 99% | 5.00 | 1.2× |
| 45° | 1782 | 94% | 5.32 | 1.5× |
| 60° | 1570 | 83% | 5.31 | 2.0× |
| 70° | 1380 | 73% | 5.11 | 2.6× |
| 90° | 946 | 50% | 4.29 | 4.3× |
A fixed array in Ihosy produces the most over a year at 23°. The design month for an off-grid system is June: at 26° it makes 4.86 kWh per kWp a day, 3% more than at 23°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Ihosy 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 | 6.81 | 2.66 | 2.17 | 4.97 | 23.0 °C |
| February | 6.60 | 3.42 | 2.81 | 5.15 | 22.6 °C |
| March | 6.20 | 4.36 | 3.62 | 5.26 | 22.0 °C |
| April | 5.46 | 5.33 | 4.45 | 5.18 | 20.4 °C |
| May | 4.65 | 5.83 | 4.91 | 4.89 | 18.3 °C |
| June | 4.22 | 6.02 | 5.11 | 4.74 | 16.3 °C |
| July | 4.44 | 6.01 | 5.12 | 4.89 | 15.5 °C |
| August | 5.35 | 6.01 | 5.09 | 5.44 | 16.9 °C |
| September | 6.40 | 5.26 | 4.42 | 5.80 | 19.0 °C |
| October | 7.00 | 3.94 | 3.26 | 5.64 | 21.6 °C |
| November | 7.39 | 2.89 | 2.36 | 5.43 | 23.1 °C |
| December | 7.28 | 2.47 | 2.00 | 5.15 | 23.7 °C |
| Year | 5.98 avg | 4.52 avg | 1380 kWh | 1902 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 250 Wp at 23°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Ihosy
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 Ihosy compares in Madagascar
Against the other 105 places in Madagascar with climate data, for a fixed array at its best angle.
17thof 106 places in Madagascar for sunshine: 5.98 peak sun hours a day on flat ground.
+11%solar energy a year compared with the average place in Madagascar: 1,902 against 1,713 kWh per kWp.
+14 mindaylight on the longest day, compared with Antananarivo: 13 h 31 min against 13 h 16 min.
23°best year-round tilt here; across Madagascar it runs from 13° in Antsiranana to 25° in Ampanihy.
Of the 106 places in Madagascar, Beroroha and one other place get the most sun (6.17 peak sun hours a day) and Soanierana Ivongo the least (4.90); Ihosy ranks 17th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.00 kWh a day here, against 1.78 kWh on average in Madagascar. The shortest day lasts 10 h 46 min, −14 min compared with Antananarivo.
Solar forecast for Ihosy, 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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A free, live card for Ihosy: 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.