Solarposition.org

Thailand · 14.20° N · 101.21° E

Solar position in Nakhon Nayok

Sun position, daylight and the best solar panel angle for Nakhon Nayok — computed for 14.20° N, 101.21° E, 12 m above sea level.

Sunrise today06:08102° ESE
Sunset today17:50258° WSW
Best panel angle16°year-round, facing south
Off-grid angle9°best for the darkest month

The sun right now

Azimuth180.0°
Elevation63.7°
At solar noon, 11:59Open on the sun map

Sun in Nakhon Nayok today

Sunday, 25 October 2026 · local time UTC+7

EventTimeDirection / height
Astronomical dawn04:56sun 18° below horizon
Nautical dawn05:2112° below
Civil dawn05:466° below
Sunrise06:08102° ESE
Golden hour ends06:37sun 6° up
Solar noon11:5963.7° high
Golden hour starts17:21sun 6° up
Sunset17:50258° WSW
Civil dusk18:116° below
Nautical dusk18:3712° below
Astronomical dusk19:0218° below
Day length11 h 42 min

Sun path diagram for Nakhon Nayok

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice6789101112131415161718EquinoxDecember solstice7891011121314151617Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 80.8° at solar noon in Nakhon Nayok; 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.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January06:4312:2618:0911 h 25 min55.9°
February06:3612:2818:2111 h 45 min65.3°
March06:1812:2218:2612 h 07 min76.0°
April05:5812:1318:2912 h 31 min87.7°
May05:4612:1118:3612 h 50 min84.0°
June05:4712:1618:4512 h 58 min80.8°
July05:5612:2118:4612 h 51 min83.7°
August06:0212:1818:3412 h 32 min87.9°
September06:0412:0818:1212 h 08 min76.5°
October06:0711:5917:5211 h 45 min65.1°
November06:1812:0017:4311 h 25 min55.9°
December06:3412:1317:5111 h 17 min52.4°

A year of daylight in Nakhon Nayok

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Nakhon Nayok

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: 1505 kWh per kWp.

9°gives the most in the darkest month — the one an off-grid system is sized for.

20%30%40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 16°Best worst-month 9°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearAugust kWh/kWp/dayBest ÷ worst month
0°146097%3.791.2×
9° off-grid best149799%3.751.2×
14° = latitude1504100%3.691.2×
15°1505100%3.681.2×
16° year-round best1505100%3.671.2×
30°146898%3.391.5×
45°135390%2.931.8×
60°116878%2.352.3×
70°101467%1.902.9×
90°70747%1.193.1×

A fixed array in Nakhon Nayok produces the most over a year at 16°. The design month for an off-grid system is August: at 9° it makes 3.75 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 Nakhon Nayok at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 16° (year-round best).

012345January: 4.25 (70°)4.3JanFebruary: 3.65 (70°)3.6FebMarch: 2.94 (70°)2.9MarApril: 2.24 (70°)2.2AprMay: 1.70 (70°)1.7MayJune: 1.55 (70°)1.6JunJuly: 1.62 (70°)1.6JulAugust: 1.90 (70°)1.9AugSeptember: 2.32 (70°)2.3SepOctober: 2.92 (70°)2.9OctNovember: 3.85 (70°)3.8NovDecember: 4.43 (70°)4.4Dec16°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 16°Mean temp.
January4.925.174.254.5124.7 °C
February5.254.493.654.5127.4 °C
March5.453.662.944.4229.1 °C
April5.802.822.244.4429.9 °C
May5.412.161.704.0128.6 °C
June5.191.971.553.8127.5 °C
July4.972.041.623.6926.9 °C
August4.802.381.903.6726.6 °C
September4.672.872.323.7226.3 °C
October4.683.582.923.9225.9 °C
November4.814.683.854.3224.8 °C
December4.815.364.434.5123.6 °C
Year5.06 avg3.43 avg1014 kWh1505 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 760 Wp of panels at 70°, versus 320 Wp at 16°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.

Row spacing in Nakhon Nayok

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°

Row spacing calculator

How Nakhon Nayok compares in Thailand

Against the other 294 places in Thailand with climate data, for a fixed array at its best angle.

165thof 295 places in Thailand for sunshine, shared: 5.06 peak sun hours a day on flat ground.

±0%solar energy a year compared with the average place in Thailand: 1,505 against 1,509 kWh per kWp.

+2 mindaylight on the longest day, compared with Bangkok: 12 h 58 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); Nakhon Nayok ranks joint 165th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.55 kWh a day here, against 1.53 kWh on average in Thailand. The shortest day lasts 11 h 17 min, −2 min compared with Bangkok.

The sunniest places in Thailand

Solar forecast for Nakhon Nayok, 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 Nakhon Nayok

What is the best solar panel angle in Nakhon Nayok?
For a fixed array facing south, the best year-round tilt in Nakhon Nayok is 16°, worth about 1505 kWh per kWp a year. An off-grid system that has to get through August does better at about 9°.
What time is sunrise and sunset in Nakhon Nayok today?
On 25 October 2026 the sun rises at 06:08 and sets at 17:50 local time (UTC+7), giving 11 h 42 min of daylight. Solar noon is at 11:59.
How many peak sun hours does Nakhon Nayok get?
On a flat surface 5.1 hours a day averaged over the year, from 4.7 in September to 5.8 in April. Panels tilted at 70° receive 2.0 sun hours a day in June.
How high does the sun get in Nakhon Nayok?
At solar noon the sun stands 80.8° above the horizon on the June solstice and 52.4° on the December solstice.
Is Nakhon Nayok a good place for solar panels?
With 5.1 peak sun hours a day on flat ground, Nakhon Nayok ranks joint 165th of 295 places in Thailand for sunshine. A 1 kWp array at the best angle (16°) makes about 1,505 kWh a year here, as much as the average place in Thailand.

Places near Nakhon Nayok

All places in Thailand

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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.