Ilocos · Philippines · 16.39° N · 120.35° E
Solar position in Aringay
Sun position, daylight and the best solar panel angle for Aringay — computed for 16.39° N, 120.35° E, 16 m above sea level.
The sun right now
Sun in Aringay today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:40 | sun 18° below horizon |
| Nautical dawn | 05:06 | 12° below |
| Civil dawn | 05:31 | 6° below |
| Sunrise | 05:53 | 102° ESE |
| Golden hour ends | 06:22 | sun 6° up |
| Solar noon | 11:42 | 61.5° high |
| Golden hour starts | 17:02 | sun 6° up |
| Sunset | 17:31 | 258° WSW |
| Civil dusk | 17:53 | 6° below |
| Nautical dusk | 18:19 | 12° below |
| Astronomical dusk | 18:44 | 18° below |
| Day length | 11 h 38 min | |
Sun path diagram for Aringay
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 83.0° at solar noon in Aringay; on the December solstice only 50.2°. Sunrise swings from 65° ENE in June to 114° ESE in December — a 49° 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 | 06:30 | 12:09 | 17:49 | 11 h 19 min | 53.7° |
| February | 06:21 | 12:12 | 18:03 | 11 h 42 min | 63.0° |
| March | 06:02 | 12:05 | 18:09 | 12 h 07 min | 73.8° |
| April | 05:39 | 11:57 | 18:15 | 12 h 35 min | 85.5° |
| May | 05:26 | 11:55 | 18:23 | 12 h 57 min | 86.2° |
| June | 05:27 | 12:00 | 18:33 | 13 h 06 min | 83.0° |
| July | 05:35 | 12:05 | 18:33 | 12 h 58 min | 85.9° |
| August | 05:43 | 12:01 | 18:19 | 12 h 36 min | 85.7° |
| September | 05:47 | 11:51 | 17:55 | 12 h 08 min | 74.3° |
| October | 05:52 | 11:43 | 17:33 | 11 h 42 min | 62.9° |
| November | 06:04 | 11:44 | 17:23 | 11 h 19 min | 53.7° |
| December | 06:21 | 11:56 | 17:31 | 11 h 09 min | 50.2° |
A year of daylight in Aringay
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 Aringay
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
17°collects the most energy over a year: 1542 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 | August kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1486 | 96% | 3.57 | 1.5× |
| 4° off-grid best | 1509 | 98% | 3.56 | 1.4× |
| 15° | 1541 | 100% | 3.48 | 1.4× |
| 16° = latitude | 1541 | 100% | 3.46 | 1.4× |
| 17° year-round best | 1542 | 100% | 3.45 | 1.5× |
| 30° | 1508 | 98% | 3.20 | 1.5× |
| 45° | 1392 | 90% | 2.77 | 1.8× |
| 60° | 1200 | 78% | 2.21 | 2.3× |
| 70° | 1040 | 67% | 1.79 | 2.9× |
| 90° | 711 | 46% | 1.03 | 3.3× |
A fixed array in Aringay produces the most over a year at 17°. The design month for an off-grid system is August: at 4° it makes 3.56 kWh per kWp a day, 3% more than at 17°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Aringay at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 17° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 17° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.71 | 5.21 | 4.28 | 4.41 | 24.9 °C |
| February | 5.38 | 4.91 | 4.03 | 4.78 | 25.3 °C |
| March | 6.03 | 4.21 | 3.42 | 5.02 | 26.5 °C |
| April | 6.39 | 3.09 | 2.49 | 4.94 | 28.0 °C |
| May | 5.84 | 2.18 | 1.73 | 4.31 | 28.3 °C |
| June | 5.40 | 1.88 | 1.48 | 3.92 | 27.7 °C |
| July | 4.92 | 1.94 | 1.53 | 3.63 | 27.2 °C |
| August | 4.51 | 2.24 | 1.79 | 3.45 | 26.9 °C |
| September | 4.86 | 3.03 | 2.45 | 3.90 | 26.9 °C |
| October | 4.92 | 3.98 | 3.23 | 4.19 | 27.0 °C |
| November | 4.56 | 4.67 | 3.80 | 4.14 | 26.7 °C |
| December | 4.31 | 4.93 | 4.03 | 4.05 | 25.8 °C |
| Year | 5.15 avg | 3.52 avg | 1040 kWh | 1542 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 800 Wp of panels at 70°, versus 340 Wp at 17°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Aringay
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.
2.4 mrow pitch at 70°
2.5 mrow pitch at 17°
How Aringay compares in the Philippines
Against the other 519 places in the Philippines with climate data, for a fixed array at its best angle.
54thof 520 places in the Philippines for sunshine, shared: 5.15 peak sun hours a day on flat ground.
+5%solar energy a year compared with the average place in the Philippines: 1,542 against 1,467 kWh per kWp.
+7 mindaylight on the longest day, compared with Quezon City: 13 h 06 min against 13 h 00 min.
17°best year-round tilt here; across the Philippines it runs from 4° in Bongao to 18° in Vigan.
Of the 520 places in the Philippines, Jolo gets the most sun (5.36 peak sun hours a day) and Pangil the least (4.68); Aringay ranks joint 54th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.48 kWh a day here, against 1.34 kWh on average in the Philippines. The shortest day lasts 11 h 09 min, −6 min compared with Quezon City.
Solar forecast for Aringay, 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 Aringay
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A free, live card for Aringay: 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.