Central Luzon · Philippines · 15.33° N · 119.98° E
Solar position in Iba
Sun position, daylight and the best solar panel angle for Iba — computed for 15.33° N, 119.98° E, 13 m above sea level.
The sun right now
Sun in Iba today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:41 | sun 18° below horizon |
| Nautical dawn | 05:06 | 12° below |
| Civil dawn | 05:32 | 6° below |
| Sunrise | 05:54 | 102° ESE |
| Golden hour ends | 06:23 | sun 6° up |
| Solar noon | 11:44 | 62.6° high |
| Golden hour starts | 17:05 | sun 6° up |
| Sunset | 17:34 | 258° WSW |
| Civil dusk | 17:56 | 6° below |
| Nautical dusk | 18:21 | 12° below |
| Astronomical dusk | 18:46 | 18° below |
| Day length | 11 h 40 min | |
Sun path diagram for Iba
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 81.9° at solar noon in Iba; on the December solstice only 51.2°. 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 | 12:11 | 17:52 | 11 h 22 min | 54.8° |
| February | 06:22 | 12:13 | 18:05 | 11 h 44 min | 64.1° |
| March | 06:03 | 12:07 | 18:11 | 12 h 07 min | 74.9° |
| April | 05:42 | 11:58 | 18:15 | 12 h 33 min | 86.5° |
| May | 05:29 | 11:56 | 18:23 | 12 h 54 min | 85.2° |
| June | 05:30 | 12:01 | 18:32 | 13 h 02 min | 81.9° |
| July | 05:39 | 12:06 | 18:33 | 12 h 54 min | 84.9° |
| August | 05:46 | 12:03 | 18:20 | 12 h 34 min | 86.8° |
| September | 05:49 | 11:53 | 17:57 | 12 h 08 min | 75.4° |
| October | 05:53 | 11:44 | 17:36 | 11 h 43 min | 64.0° |
| November | 06:04 | 11:45 | 17:26 | 11 h 22 min | 54.8° |
| December | 06:21 | 11:57 | 17:34 | 11 h 13 min | 51.2° |
A year of daylight in Iba
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 Iba
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
16°collects the most energy over a year: 1555 kWh per kWp.
1°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° | 1504 | 97% | 3.49 | 1.5× |
| 1° off-grid best | 1511 | 97% | 3.49 | 1.5× |
| 15° = latitude | 1555 | 100% | 3.39 | 1.5× |
| 16° year-round best | 1555 | 100% | 3.38 | 1.5× |
| 30° | 1518 | 98% | 3.12 | 1.6× |
| 45° | 1395 | 90% | 2.69 | 1.9× |
| 60° | 1198 | 77% | 2.14 | 2.4× |
| 70° | 1033 | 66% | 1.72 | 3.1× |
| 90° | 703 | 45% | 1.02 | 3.3× |
A fixed array in Iba produces the most over a year at 16°. The design month for an off-grid system is August: at 1° it makes 3.49 kWh per kWp a day, 3% more than at 16°, and costs 3% of the yearly total. Why steep panels win winter.
Off-grid solar in Iba at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 16° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 16° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.84 | 5.26 | 4.31 | 4.47 | 25.7 °C |
| February | 5.57 | 5.00 | 4.09 | 4.90 | 26.1 °C |
| March | 6.27 | 4.27 | 3.47 | 5.18 | 27.2 °C |
| April | 6.65 | 3.06 | 2.45 | 5.12 | 28.6 °C |
| May | 5.97 | 2.11 | 1.66 | 4.39 | 28.8 °C |
| June | 5.29 | 1.80 | 1.41 | 3.84 | 28.1 °C |
| July | 4.76 | 1.84 | 1.45 | 3.52 | 27.5 °C |
| August | 4.43 | 2.16 | 1.72 | 3.38 | 27.3 °C |
| September | 4.79 | 2.94 | 2.37 | 3.82 | 27.3 °C |
| October | 5.01 | 3.98 | 3.23 | 4.24 | 27.4 °C |
| November | 4.71 | 4.74 | 3.85 | 4.22 | 27.2 °C |
| December | 4.43 | 4.98 | 4.06 | 4.11 | 26.4 °C |
| Year | 5.22 avg | 3.50 avg | 1033 kWh | 1555 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 840 Wp of panels at 70°, versus 350 Wp at 16°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Iba
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°
2.4 mrow pitch at 16°
How Iba compares in the Philippines
Against the other 519 places in the Philippines with climate data, for a fixed array at its best angle.
19thof 520 places in the Philippines for sunshine, shared: 5.22 peak sun hours a day on flat ground.
+6%solar energy a year compared with the average place in the Philippines: 1,555 against 1,467 kWh per kWp.
+3 mindaylight on the longest day, compared with Quezon City: 13 h 02 min against 13 h 00 min.
16°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); Iba ranks joint 19th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.41 kWh a day here, against 1.34 kWh on average in the Philippines. The shortest day lasts 11 h 13 min, −3 min compared with Quezon City.
Solar forecast for Iba, 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 Iba
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Places near Iba
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A free, live card for Iba: 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.