Calabarzon · Philippines · 14.18° N · 121.29° E
Solar position in Bay
Sun position, daylight and the best solar panel angle for Bay — computed for 14.18° N, 121.29° E, 11 m above sea level.
The sun right now
Sun in Bay today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:35 | sun 18° below horizon |
| Nautical dawn | 05:00 | 12° below |
| Civil dawn | 05:26 | 6° below |
| Sunrise | 05:47 | 102° ESE |
| Golden hour ends | 06:16 | sun 6° up |
| Solar noon | 11:38 | 63.7° high |
| Golden hour starts | 17:01 | sun 6° up |
| Sunset | 17:29 | 258° WSW |
| Civil dusk | 17:51 | 6° below |
| Nautical dusk | 18:16 | 12° below |
| Astronomical dusk | 18:41 | 18° below |
| Day length | 11 h 42 min | |
Sun path diagram for Bay
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 80.7° at solar noon in Bay; on the December solstice only 52.4°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 48° 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 | 06:23 | 12:06 | 17:48 | 11 h 25 min | 55.9° |
| February | 06:15 | 12:08 | 18:01 | 11 h 45 min | 65.3° |
| March | 05:58 | 12:02 | 18:05 | 12 h 07 min | 76.0° |
| April | 05:38 | 11:53 | 18:09 | 12 h 31 min | 87.7° |
| May | 05:26 | 11:51 | 18:16 | 12 h 50 min | 84.0° |
| June | 05:27 | 11:56 | 18:25 | 12 h 58 min | 80.7° |
| July | 05:35 | 12:01 | 18:26 | 12 h 51 min | 83.7° |
| August | 05:42 | 11:58 | 18:13 | 12 h 32 min | 87.9° |
| September | 05:43 | 11:47 | 17:52 | 12 h 08 min | 76.5° |
| October | 05:46 | 11:39 | 17:31 | 11 h 45 min | 65.1° |
| November | 05:57 | 11:40 | 17:23 | 11 h 25 min | 55.9° |
| December | 06:14 | 11:52 | 17:31 | 11 h 17 min | 52.4° |
A year of daylight in Bay
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 Bay
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
12°collects the most energy over a year: 1416 kWh per kWp.
22°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° | 1390 | 98% | 2.82 | 1.8× |
| 12° year-round best | 1416 | 100% | 3.14 | 1.6× |
| 14° = latitude | 1416 | 100% | 3.19 | 1.5× |
| 15° | 1415 | 100% | 3.21 | 1.5× |
| 22° off-grid best | 1400 | 99% | 3.33 | 1.4× |
| 30° | 1362 | 96% | 3.42 | 1.4× |
| 45° | 1236 | 87% | 3.44 | 1.6× |
| 60° | 1045 | 74% | 3.26 | 2.0× |
| 70° | 892 | 63% | 3.04 | 2.4× |
| 90° | 602 | 43% | 2.37 | 2.5× |
A fixed array in Bay produces the most over a year at 12°. The design month for an off-grid system is December: at 22° it makes 3.33 kWh per kWp a day, 6% more than at 12°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Bay at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 12° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 12° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.00 | 4.03 | 3.30 | 3.51 | 25.0 °C |
| February | 4.81 | 4.13 | 3.38 | 4.12 | 25.3 °C |
| March | 5.58 | 3.72 | 3.03 | 4.58 | 26.4 °C |
| April | 6.29 | 2.84 | 2.28 | 4.90 | 28.0 °C |
| May | 5.81 | 2.03 | 1.59 | 4.37 | 28.7 °C |
| June | 5.28 | 1.80 | 1.41 | 3.94 | 28.2 °C |
| July | 4.76 | 1.83 | 1.44 | 3.59 | 27.5 °C |
| August | 4.53 | 2.17 | 1.72 | 3.50 | 27.3 °C |
| September | 4.73 | 2.85 | 2.29 | 3.77 | 27.3 °C |
| October | 4.42 | 3.39 | 2.75 | 3.66 | 27.1 °C |
| November | 4.06 | 3.87 | 3.15 | 3.51 | 26.7 °C |
| December | 3.58 | 3.72 | 3.04 | 3.14 | 25.8 °C |
| Year | 4.82 avg | 3.02 avg | 892 kWh | 1416 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 380 Wp at 12°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Bay
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.
2.3 mrow pitch at 70°
2.3 mrow pitch at 12°
How Bay compares in the Philippines
Against the other 519 places in the Philippines with climate data, for a fixed array at its best angle.
476thof 520 places in the Philippines for sunshine, shared: 4.82 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in the Philippines: 1,416 against 1,467 kWh per kWp.
−2 mindaylight on the longest day, compared with Quezon City: 12 h 58 min against 13 h 00 min.
12°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); Bay ranks joint 476th. 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 17 min, +2 min compared with Quezon City.
Solar forecast for Bay, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
Loading the latest forecast…
Questions about the sun in Bay
What is the best solar panel angle in Bay?
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Places near Bay
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A free, live card for Bay: 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.