Cambodia · 12.85° N · 102.61° E
Solar position in Pailin
Sun position, daylight and the best solar panel angle for Pailin — computed for 12.85° N, 102.61° E, 201 m above sea level.
The sun right now
Sun in Pailin today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:49 | sun 18° below horizon |
| Nautical dawn | 05:14 | 12° below |
| Civil dawn | 05:39 | 6° below |
| Sunrise | 06:01 | 102° ESE |
| Golden hour ends | 06:30 | sun 6° up |
| Solar noon | 11:53 | 65.1° high |
| Golden hour starts | 17:17 | sun 6° up |
| Sunset | 17:45 | 258° WSW |
| Civil dusk | 18:07 | 6° below |
| Nautical dusk | 18:32 | 12° below |
| Astronomical dusk | 18:57 | 18° below |
| Day length | 11 h 45 min | |
Sun path diagram for Pailin
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 79.4° at solar noon in Pailin; on the December solstice only 53.7°. 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 | 06:36 | 12:20 | 18:05 | 11 h 30 min | 57.3° |
| February | 06:29 | 12:23 | 18:16 | 11 h 47 min | 66.6° |
| March | 06:13 | 12:16 | 18:20 | 12 h 07 min | 77.4° |
| April | 05:53 | 12:08 | 18:22 | 12 h 29 min | 89.0° |
| May | 05:43 | 12:06 | 18:29 | 12 h 46 min | 82.7° |
| June | 05:44 | 12:11 | 18:37 | 12 h 53 min | 79.4° |
| July | 05:52 | 12:16 | 18:39 | 12 h 46 min | 82.4° |
| August | 05:58 | 12:12 | 18:27 | 12 h 29 min | 89.3° |
| September | 05:58 | 12:02 | 18:06 | 12 h 08 min | 77.9° |
| October | 06:00 | 11:54 | 17:47 | 11 h 47 min | 66.5° |
| November | 06:10 | 11:55 | 17:40 | 11 h 29 min | 57.3° |
| December | 06:26 | 12:07 | 17:48 | 11 h 22 min | 53.7° |
A year of daylight in Pailin
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 Pailin
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
15°collects the most energy over a year: 1443 kWh per kWp.
8°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° | 1406 | 97% | 3.56 | 1.2× |
| 8° off-grid best | 1435 | 99% | 3.51 | 1.2× |
| 13° = latitude | 1443 | 100% | 3.46 | 1.3× |
| 15° year-round best | 1443 | 100% | 3.44 | 1.3× |
| 30° | 1403 | 97% | 3.15 | 1.5× |
| 45° | 1288 | 89% | 2.71 | 1.9× |
| 60° | 1107 | 77% | 2.15 | 2.5× |
| 70° | 959 | 66% | 1.74 | 3.0× |
| 90° | 670 | 46% | 1.11 | 3.0× |
A fixed array in Pailin produces the most over a year at 15°. The design month for an off-grid system is August: at 8° it makes 3.51 kWh per kWp a day, 2% more than at 15°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Pailin at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 15° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 15° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.94 | 5.03 | 4.13 | 4.46 | 25.0 °C |
| February | 5.16 | 4.29 | 3.49 | 4.40 | 26.7 °C |
| March | 5.25 | 3.44 | 2.78 | 4.25 | 27.9 °C |
| April | 5.46 | 2.64 | 2.11 | 4.20 | 28.5 °C |
| May | 5.08 | 2.00 | 1.58 | 3.78 | 27.8 °C |
| June | 4.81 | 1.79 | 1.41 | 3.55 | 26.7 °C |
| July | 4.66 | 1.86 | 1.47 | 3.47 | 26.2 °C |
| August | 4.49 | 2.18 | 1.74 | 3.44 | 26.1 °C |
| September | 4.39 | 2.65 | 2.14 | 3.49 | 26.0 °C |
| October | 4.64 | 3.47 | 2.83 | 3.86 | 25.9 °C |
| November | 4.76 | 4.49 | 3.68 | 4.20 | 25.2 °C |
| December | 4.79 | 5.14 | 4.23 | 4.39 | 24.3 °C |
| Year | 4.87 avg | 3.24 avg | 959 kWh | 1443 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 340 Wp at 15°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Pailin
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.
2.2 mrow pitch at 70°
2.4 mrow pitch at 15°
How Pailin compares in Cambodia
Against the other 45 places in Cambodia with climate data, for a fixed array at its best angle.
44thof 46 places in Cambodia for sunshine: 4.87 peak sun hours a day on flat ground.
−5%solar energy a year compared with the average place in Cambodia: 1,443 against 1,520 kWh per kWp.
+5 mindaylight on the longest day, compared with Phnom Penh: 12 h 53 min against 12 h 48 min.
15°best year-round tilt here; across Cambodia it runs from 12° in Phnom Penh to 16° in Anlong Veaeng.
Of the 46 places in Cambodia, Snuol gets the most sun (5.29 peak sun hours a day) and Smach Mean Chey the least (4.78); Pailin ranks 44th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.41 kWh a day here, against 1.39 kWh on average in Cambodia. The shortest day lasts 11 h 22 min, −5 min compared with Phnom Penh.
Solar forecast for Pailin, 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 Pailin
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Places near Pailin
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A free, live card for Pailin: 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.