Trang · Thailand · 7.79° N · 99.63° E
Solar position in Huai Yot
Sun position, daylight and the best solar panel angle for Huai Yot — computed for 7.79° N, 99.63° E, 54 m above sea level.
The sun right now
Sun in Huai Yot today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:58 | sun 18° below horizon |
| Nautical dawn | 05:22 | 12° below |
| Civil dawn | 05:47 | 6° below |
| Sunrise | 06:08 | 102° ESE |
| Golden hour ends | 06:37 | sun 6° up |
| Solar noon | 12:05 | 70.1° high |
| Golden hour starts | 17:33 | sun 6° up |
| Sunset | 18:02 | 258° WSW |
| Civil dusk | 18:23 | 6° below |
| Nautical dusk | 18:48 | 12° below |
| Astronomical dusk | 19:12 | 18° below |
| Day length | 11 h 53 min | |
Sun path diagram for Huai Yot
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 74.4° at solar noon in Huai Yot; on the December solstice only 58.8°. Sunrise swings from 66° ENE in June to 114° ESE in December — a 47° 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 | 06:40 | 12:32 | 18:24 | 11 h 45 min | 62.3° |
| February | 06:37 | 12:35 | 18:32 | 11 h 55 min | 71.7° |
| March | 06:25 | 12:28 | 18:32 | 12 h 07 min | 82.5° |
| April | 06:10 | 12:20 | 18:30 | 12 h 20 min | 85.9° |
| May | 06:02 | 12:18 | 18:33 | 12 h 30 min | 77.6° |
| June | 06:05 | 12:23 | 18:40 | 12 h 35 min | 74.4° |
| July | 06:12 | 12:27 | 18:43 | 12 h 31 min | 77.3° |
| August | 06:14 | 12:24 | 18:34 | 12 h 20 min | 85.7° |
| September | 06:10 | 12:14 | 18:18 | 12 h 07 min | 82.9° |
| October | 06:08 | 12:06 | 18:03 | 11 h 55 min | 71.5° |
| November | 06:14 | 12:07 | 17:59 | 11 h 45 min | 62.3° |
| December | 06:29 | 12:19 | 18:09 | 11 h 40 min | 58.8° |
A year of daylight in Huai Yot
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 Huai Yot
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
8°collects the most energy over a year: 1442 kWh per kWp.
16°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 | November kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1433 | 99% | 3.27 | 1.5× |
| 8° year-round best = latitude | 1442 | 100% | 3.41 | 1.4× |
| 15° | 1433 | 99% | 3.50 | 1.4× |
| 16° off-grid best | 1430 | 99% | 3.50 | 1.4× |
| 30° | 1357 | 94% | 3.54 | 1.6× |
| 45° | 1211 | 84% | 3.40 | 1.9× |
| 60° | 1006 | 70% | 3.08 | 2.4× |
| 70° | 850 | 59% | 2.78 | 2.8× |
| 90° | 582 | 40% | 2.01 | 2.4× |
A fixed array in Huai Yot produces the most over a year at 8°. The design month for an off-grid system is November: at 16° it makes 3.50 kWh per kWp a day, 3% more than at 8°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Huai Yot at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 8° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 8° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.85 | 4.38 | 3.59 | 4.08 | 25.6 °C |
| February | 5.77 | 4.40 | 3.59 | 4.77 | 26.2 °C |
| March | 5.96 | 3.48 | 2.82 | 4.78 | 27.4 °C |
| April | 5.75 | 2.41 | 1.92 | 4.47 | 28.2 °C |
| May | 5.07 | 1.81 | 1.42 | 3.88 | 27.7 °C |
| June | 4.89 | 1.63 | 1.27 | 3.71 | 27.1 °C |
| July | 4.83 | 1.68 | 1.32 | 3.69 | 26.7 °C |
| August | 4.94 | 2.04 | 1.62 | 3.83 | 26.7 °C |
| September | 4.79 | 2.63 | 2.12 | 3.80 | 26.4 °C |
| October | 4.49 | 3.10 | 2.51 | 3.63 | 26.3 °C |
| November | 4.14 | 3.42 | 2.78 | 3.41 | 26.2 °C |
| December | 4.10 | 3.74 | 3.05 | 3.43 | 25.7 °C |
| Year | 4.96 avg | 2.89 avg | 850 kWh | 1442 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 930 Wp of panels at 70°, versus 350 Wp at 8°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Huai Yot
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.
2.0 mrow pitch at 70°
2.2 mrow pitch at 8°
How Huai Yot compares in Thailand
Against the other 294 places in Thailand with climate data, for a fixed array at its best angle.
239thof 295 places in Thailand for sunshine, shared: 4.96 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Thailand: 1,442 against 1,509 kWh per kWp.
−22 mindaylight on the longest day, compared with Bangkok: 12 h 35 min against 12 h 56 min.
8°best year-round tilt here; across Thailand it runs from 4° in Narathiwat to 23° in Mae Chan.
Of the 295 places in Thailand, Bangkok and 7 other places get the most sun (5.23 peak sun hours a day) and Mae Ramat the least (4.74); Huai Yot ranks joint 239th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.27 kWh a day here, against 1.53 kWh on average in Thailand. The shortest day lasts 11 h 40 min, +21 min compared with Bangkok.
Solar forecast for Huai Yot, 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 Huai Yot
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Places near Huai Yot
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A free, live card for Huai Yot: 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.