Ilocos · Philippines · 15.81° N · 120.46° E
Solar position in Bayambang
Sun position, daylight and the best solar panel angle for Bayambang — computed for 15.81° N, 120.46° E, 25 m above sea level.
The sun right now
Sun in Bayambang today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:40 | sun 18° below horizon |
| Nautical dawn | 05:05 | 12° below |
| Civil dawn | 05:30 | 6° below |
| Sunrise | 05:52 | 102° ESE |
| Golden hour ends | 06:21 | sun 6° up |
| Solar noon | 11:42 | 62.1° 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 39 min | |
Sun path diagram for Bayambang
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 82.4° at solar noon in Bayambang; on the December solstice only 50.8°. 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 | 06:29 | 12:09 | 17:49 | 11 h 20 min | 54.3° |
| February | 06:20 | 12:11 | 18:03 | 11 h 43 min | 63.6° |
| March | 06:01 | 12:05 | 18:09 | 12 h 07 min | 74.4° |
| April | 05:39 | 11:56 | 18:14 | 12 h 34 min | 86.0° |
| May | 05:27 | 11:54 | 18:22 | 12 h 55 min | 85.6° |
| June | 05:27 | 11:59 | 18:31 | 13 h 04 min | 82.4° |
| July | 05:36 | 12:04 | 18:32 | 12 h 56 min | 85.3° |
| August | 05:43 | 12:01 | 18:18 | 12 h 35 min | 86.3° |
| September | 05:47 | 11:51 | 17:55 | 12 h 08 min | 74.9° |
| October | 05:51 | 11:42 | 17:33 | 11 h 42 min | 63.5° |
| November | 06:03 | 11:43 | 17:24 | 11 h 20 min | 54.3° |
| December | 06:20 | 11:56 | 17:31 | 11 h 11 min | 50.8° |
A year of daylight in Bayambang
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 Bayambang
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: 1526 kWh per kWp.
2°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° | 1476 | 97% | 3.46 | 1.5× |
| 2° off-grid best | 1488 | 97% | 3.46 | 1.5× |
| 15° | 1526 | 100% | 3.36 | 1.5× |
| 16° year-round best = latitude | 1526 | 100% | 3.35 | 1.5× |
| 30° | 1491 | 98% | 3.10 | 1.6× |
| 45° | 1372 | 90% | 2.68 | 1.8× |
| 60° | 1181 | 77% | 2.14 | 2.3× |
| 70° | 1021 | 67% | 1.74 | 2.9× |
| 90° | 699 | 46% | 1.02 | 3.2× |
A fixed array in Bayambang produces the most over a year at 16°. The design month for an off-grid system is August: at 2° it makes 3.46 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 Bayambang 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 | 4.69 | 5.09 | 4.19 | 4.34 | 24.4 °C |
| February | 5.37 | 4.83 | 3.96 | 4.73 | 25.2 °C |
| March | 6.04 | 4.16 | 3.38 | 5.00 | 26.8 °C |
| April | 6.39 | 3.05 | 2.45 | 4.94 | 28.4 °C |
| May | 5.84 | 2.16 | 1.70 | 4.33 | 28.2 °C |
| June | 5.34 | 1.85 | 1.46 | 3.90 | 27.2 °C |
| July | 4.82 | 1.89 | 1.50 | 3.58 | 26.5 °C |
| August | 4.37 | 2.17 | 1.74 | 3.35 | 26.2 °C |
| September | 4.77 | 2.96 | 2.40 | 3.83 | 26.3 °C |
| October | 4.87 | 3.89 | 3.17 | 4.14 | 26.3 °C |
| November | 4.53 | 4.56 | 3.73 | 4.08 | 25.8 °C |
| December | 4.30 | 4.84 | 3.97 | 4.01 | 25.0 °C |
| Year | 5.11 avg | 3.45 avg | 1021 kWh | 1526 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 810 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 Bayambang
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 Bayambang compares in the Philippines
Against the other 519 places in the Philippines with climate data, for a fixed array at its best angle.
77thof 520 places in the Philippines for sunshine, shared: 5.11 peak sun hours a day on flat ground.
+4%solar energy a year compared with the average place in the Philippines: 1,526 against 1,467 kWh per kWp.
+4 mindaylight on the longest day, compared with Quezon City: 13 h 04 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); Bayambang ranks joint 77th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.46 kWh a day here, against 1.34 kWh on average in the Philippines. The shortest day lasts 11 h 11 min, −4 min compared with Quezon City.
Solar forecast for Bayambang, 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 Bayambang
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A free, live card for Bayambang: 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.