Sarawak · Malaysia · 1.38° N · 110.75° E
Solar position in Simunjan
Sun position, daylight and the best solar panel angle for Simunjan — computed for 1.38° N, 110.75° E, 7 m above sea level.
The sun right now
Sun in Simunjan today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:08 | sun 18° below horizon |
| Nautical dawn | 05:33 | 12° below |
| Civil dawn | 05:57 | 6° below |
| Sunrise | 06:18 | 102° ESE |
| Golden hour ends | 06:46 | sun 6° up |
| Solar noon | 12:21 | 76.5° high |
| Golden hour starts | 17:55 | sun 6° up |
| Sunset | 18:23 | 258° WSW |
| Civil dusk | 18:44 | 6° below |
| Nautical dusk | 19:08 | 12° below |
| Astronomical dusk | 19:33 | 18° below |
| Day length | 12 h 04 min | |
Sun path diagram for Simunjan
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 68.0° at solar noon in Simunjan; on the December solstice only 65.2°. Sunrise swings from 67° ENE in June to 113° 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 | 06:46 | 12:48 | 18:49 | 12 h 03 min | 68.7° |
| February | 06:48 | 12:50 | 18:52 | 12 h 05 min | 78.1° |
| March | 06:40 | 12:44 | 18:47 | 12 h 07 min | 88.8° |
| April | 06:31 | 12:35 | 18:40 | 12 h 09 min | 79.5° |
| May | 06:27 | 12:33 | 18:39 | 12 h 11 min | 71.2° |
| June | 06:32 | 12:38 | 18:44 | 12 h 12 min | 68.0° |
| July | 06:37 | 12:43 | 18:49 | 12 h 11 min | 70.9° |
| August | 06:35 | 12:40 | 18:44 | 12 h 09 min | 79.3° |
| September | 06:26 | 12:30 | 18:33 | 12 h 07 min | 89.3° |
| October | 06:19 | 12:21 | 18:23 | 12 h 05 min | 77.9° |
| November | 06:21 | 12:22 | 18:24 | 12 h 03 min | 68.7° |
| December | 06:33 | 12:34 | 18:36 | 12 h 03 min | 65.2° |
A year of daylight in Simunjan
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 Simunjan
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
0°collects the most energy over a year: 1375 kWh per kWp.
11°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 | January kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° year-round best | 1375 | 100% | 3.38 | 1.2× |
| 1° = latitude | 1375 | 100% | 3.40 | 1.2× |
| 11° off-grid best | 1353 | 98% | 3.52 | 1.1× |
| 15° | 1335 | 97% | 3.55 | 1.2× |
| 30° | 1226 | 89% | 3.55 | 1.4× |
| 45° | 1056 | 77% | 3.36 | 1.8× |
| 60° | 843 | 61% | 3.01 | 2.6× |
| 70° | 706 | 51% | 2.70 | 2.7× |
| 90° | 495 | 36% | 1.91 | 2.1× |
A fixed array in Simunjan produces the most over a year at 0°. The design month for an off-grid system is January: at 11° it makes 3.52 kWh per kWp a day, 4% more than at 0°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Simunjan at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 0° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 0° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.26 | 3.31 | 2.70 | 3.38 | 25.4 °C |
| February | 4.55 | 3.07 | 2.50 | 3.62 | 25.4 °C |
| March | 5.02 | 2.70 | 2.18 | 3.99 | 25.9 °C |
| April | 5.11 | 1.89 | 1.50 | 4.06 | 26.4 °C |
| May | 4.97 | 1.42 | 1.11 | 3.94 | 26.7 °C |
| June | 4.85 | 1.38 | 1.07 | 3.85 | 26.3 °C |
| July | 4.96 | 1.41 | 1.10 | 3.94 | 26.0 °C |
| August | 4.96 | 1.62 | 1.28 | 3.94 | 26.2 °C |
| September | 4.62 | 2.22 | 1.77 | 3.67 | 26.1 °C |
| October | 4.56 | 2.84 | 2.30 | 3.62 | 26.0 °C |
| November | 4.64 | 3.48 | 2.83 | 3.68 | 25.8 °C |
| December | 4.43 | 3.58 | 2.92 | 3.51 | 25.6 °C |
| Year | 4.75 avg | 2.41 avg | 706 kWh | 1375 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 1,100 Wp of panels at 70°, versus 350 Wp at 0°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Simunjan
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.
1.7 mrow pitch at 70°
2.0 mrow pitch at 0°
How Simunjan compares in Malaysia
Against the other 349 places in Malaysia with climate data, for a fixed array at its best angle.
288thof 350 places in Malaysia for sunshine, shared: 4.75 peak sun hours a day on flat ground.
−3%solar energy a year compared with the average place in Malaysia: 1,375 against 1,411 kWh per kWp.
−6 mindaylight on the longest day, compared with Kuala Lumpur: 12 h 12 min against 12 h 18 min.
0°best year-round tilt here; across Malaysia it runs from 0° in Kuching to 7° in Kangar.
Of the 350 places in Malaysia, Kuala Penyu gets the most sun (5.27 peak sun hours a day) and Pekan Nenas and 3 other places the least (4.60); Simunjan ranks joint 288th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.07 kWh a day here, against 1.18 kWh on average in Malaysia. The shortest day lasts 12 h 03 min, +6 min compared with Kuala Lumpur.
Solar forecast for Simunjan, 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 Simunjan
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A free, live card for Simunjan: 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.