Prachin Buri · Thailand · 14.06° N · 101.37° E
Solar position in Thambon Na Mueang
Sun position, daylight and the best solar panel angle for Thambon Na Mueang — computed for 14.06° N, 101.37° E, 23 m above sea level.
The sun right now
Sun in Thambon Na Mueang today
Sunday, 25 October 2026 · local time UTC+7
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:55 | sun 18° below horizon |
| Nautical dawn | 05:20 | 12° below |
| Civil dawn | 05:45 | 6° below |
| Sunrise | 06:07 | 102° ESE |
| Golden hour ends | 06:36 | sun 6° up |
| Solar noon | 11:58 | 63.9° high |
| Golden hour starts | 17:20 | sun 6° up |
| Sunset | 17:49 | 258° WSW |
| Civil dusk | 18:11 | 6° below |
| Nautical dusk | 18:36 | 12° below |
| Astronomical dusk | 19:01 | 18° below |
| Day length | 11 h 42 min | |
Sun path diagram for Thambon Na Mueang
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 80.6° at solar noon in Thambon Na Mueang; on the December solstice only 52.5°. 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 | 06:42 | 12:25 | 18:08 | 11 h 26 min | 56.1° |
| February | 06:35 | 12:28 | 18:20 | 11 h 46 min | 65.4° |
| March | 06:18 | 12:21 | 18:25 | 12 h 07 min | 76.2° |
| April | 05:57 | 12:13 | 18:28 | 12 h 31 min | 87.8° |
| May | 05:46 | 12:11 | 18:35 | 12 h 50 min | 83.9° |
| June | 05:47 | 12:16 | 18:45 | 12 h 57 min | 80.6° |
| July | 05:55 | 12:20 | 18:46 | 12 h 50 min | 83.6° |
| August | 06:01 | 12:17 | 18:33 | 12 h 32 min | 88.0° |
| September | 06:03 | 12:07 | 18:11 | 12 h 08 min | 76.6° |
| October | 06:06 | 11:59 | 17:51 | 11 h 45 min | 65.3° |
| November | 06:17 | 12:00 | 17:43 | 11 h 26 min | 56.0° |
| December | 06:33 | 12:12 | 17:51 | 11 h 18 min | 52.5° |
A year of daylight in Thambon Na Mueang
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 Thambon Na Mueang
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: 1493 kWh per kWp.
9°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° | 1448 | 97% | 3.75 | 1.2× |
| 9° off-grid best | 1484 | 99% | 3.71 | 1.2× |
| 14° = latitude | 1492 | 100% | 3.65 | 1.2× |
| 15° | 1493 | 100% | 3.64 | 1.2× |
| 16° year-round best | 1493 | 100% | 3.63 | 1.2× |
| 30° | 1456 | 98% | 3.35 | 1.5× |
| 45° | 1342 | 90% | 2.90 | 1.8× |
| 60° | 1158 | 78% | 2.32 | 2.4× |
| 70° | 1006 | 67% | 1.88 | 2.9× |
| 90° | 703 | 47% | 1.18 | 3.1× |
A fixed array in Thambon Na Mueang produces the most over a year at 16°. The design month for an off-grid system is August: at 9° it makes 3.71 kWh per kWp a day, 2% more than at 16°, and costs 1% of the yearly total. Why steep panels win winter.
Off-grid solar in Thambon Na Mueang 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 | 4.91 | 5.16 | 4.24 | 4.51 | 24.7 °C |
| February | 5.22 | 4.44 | 3.61 | 4.48 | 27.2 °C |
| March | 5.40 | 3.61 | 2.91 | 4.37 | 28.9 °C |
| April | 5.72 | 2.79 | 2.22 | 4.38 | 29.6 °C |
| May | 5.31 | 2.13 | 1.68 | 3.94 | 28.5 °C |
| June | 5.11 | 1.95 | 1.54 | 3.75 | 27.4 °C |
| July | 4.89 | 2.02 | 1.60 | 3.63 | 26.7 °C |
| August | 4.74 | 2.36 | 1.88 | 3.63 | 26.5 °C |
| September | 4.62 | 2.84 | 2.30 | 3.68 | 26.2 °C |
| October | 4.67 | 3.57 | 2.91 | 3.91 | 25.9 °C |
| November | 4.81 | 4.66 | 3.83 | 4.31 | 24.7 °C |
| December | 4.82 | 5.35 | 4.42 | 4.51 | 23.5 °C |
| Year | 5.02 avg | 3.40 avg | 1006 kWh | 1493 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 770 Wp of panels at 70°, versus 330 Wp at 16°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Thambon Na Mueang
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°
2.4 mrow pitch at 16°
How Thambon Na Mueang compares in Thailand
Against the other 294 places in Thailand with climate data, for a fixed array at its best angle.
197thof 295 places in Thailand for sunshine, shared: 5.02 peak sun hours a day on flat ground.
−1%solar energy a year compared with the average place in Thailand: 1,493 against 1,509 kWh per kWp.
+1 mindaylight on the longest day, compared with Bangkok: 12 h 57 min against 12 h 56 min.
16°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); Thambon Na Mueang ranks joint 197th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.54 kWh a day here, against 1.53 kWh on average in Thailand. The shortest day lasts 11 h 18 min, −1 min compared with Bangkok.
Solar forecast for Thambon Na Mueang, 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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A free, live card for Thambon Na Mueang: 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.