Lindi · Tanzania · 10.07° S · 38.93° E
Solar position in Ruangwa
Sun position, daylight and the best solar panel angle for Ruangwa — computed for 10.07° S, 38.93° E, 348 m above sea level.
The sun right now
Sun in Ruangwa today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:44 | sun 18° below horizon |
| Nautical dawn | 05:10 | 12° below |
| Civil dawn | 05:35 | 6° below |
| Sunrise | 05:56 | 102° ESE |
| Golden hour ends | 06:24 | sun 6° up |
| Solar noon | 12:08 | 88.3° high |
| Golden hour starts | 17:52 | sun 6° up |
| Sunset | 18:20 | 258° WSW |
| Civil dusk | 18:42 | 6° below |
| Nautical dusk | 19:07 | 12° below |
| Astronomical dusk | 19:32 | 18° below |
| Day length | 12 h 24 min | |
Sun path diagram for Ruangwa
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 56.5° at solar noon in Ruangwa; on the December solstice only 76.6°. 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 | 06:17 | 12:35 | 18:53 | 12 h 37 min | 80.2° |
| February | 06:26 | 12:37 | 18:48 | 12 h 22 min | 89.6° |
| March | 06:28 | 12:31 | 18:34 | 12 h 06 min | 79.6° |
| April | 06:28 | 12:22 | 18:17 | 11 h 50 min | 68.0° |
| May | 06:32 | 12:20 | 18:09 | 11 h 37 min | 59.7° |
| June | 06:39 | 12:26 | 18:12 | 11 h 32 min | 56.5° |
| July | 06:42 | 12:30 | 18:19 | 11 h 37 min | 59.5° |
| August | 06:32 | 12:27 | 18:22 | 11 h 49 min | 67.9° |
| September | 06:14 | 12:17 | 18:20 | 12 h 06 min | 79.3° |
| October | 05:57 | 12:08 | 18:20 | 12 h 22 min | 89.3° |
| November | 05:51 | 12:10 | 18:28 | 12 h 37 min | 80.1° |
| December | 06:00 | 12:22 | 18:43 | 12 h 43 min | 76.6° |
A year of daylight in Ruangwa
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 Ruangwa
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
12°collects the most energy over a year: 1619 kWh per kWp.
6°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° | 1591 | 98% | 4.27 | 1.2× |
| 6° off-grid best | 1612 | 100% | 4.17 | 1.1× |
| 10° = latitude | 1618 | 100% | 4.08 | 1.2× |
| 12° year-round best | 1619 | 100% | 4.03 | 1.2× |
| 15° | 1616 | 100% | 3.95 | 1.2× |
| 30° | 1551 | 96% | 3.43 | 1.4× |
| 45° | 1400 | 87% | 2.74 | 1.8× |
| 60° | 1176 | 73% | 1.95 | 2.5× |
| 70° | 999 | 62% | 1.45 | 3.3× |
| 90° | 680 | 42% | 1.15 | 3.0× |
A fixed array in Ruangwa produces the most over a year at 12°. The design month for an off-grid system is January: at 6° it makes 4.17 kWh per kWp a day, 3% more than at 12°, and costs 0% of the yearly total. Why steep panels win winter.
Off-grid solar in Ruangwa at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 12° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 12° | Mean temp. |
|---|---|---|---|---|---|
| January | 5.35 | 1.83 | 1.45 | 4.03 | 25.3 °C |
| February | 5.42 | 2.30 | 1.85 | 4.20 | 25.0 °C |
| March | 5.36 | 3.00 | 2.45 | 4.30 | 24.8 °C |
| April | 5.34 | 3.97 | 3.27 | 4.49 | 24.1 °C |
| May | 5.14 | 4.80 | 3.98 | 4.53 | 22.9 °C |
| June | 4.92 | 5.11 | 4.25 | 4.44 | 21.8 °C |
| July | 4.91 | 4.86 | 4.04 | 4.39 | 21.9 °C |
| August | 5.27 | 4.33 | 3.58 | 4.52 | 23.3 °C |
| September | 5.81 | 3.64 | 2.97 | 4.75 | 25.0 °C |
| October | 6.00 | 2.67 | 2.15 | 4.68 | 26.4 °C |
| November | 6.14 | 1.91 | 1.51 | 4.59 | 27.3 °C |
| December | 5.80 | 1.66 | 1.30 | 4.29 | 26.5 °C |
| Year | 5.45 avg | 3.35 avg | 999 kWh | 1619 kWh |
Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 900 Wp of panels at 70°, versus 290 Wp at 12°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Ruangwa
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.
2.1 mrow pitch at 70°
2.3 mrow pitch at 12°
How Ruangwa compares in Tanzania
Against the other 222 places in Tanzania with climate data, for a fixed array at its best angle.
155thof 223 places in Tanzania for sunshine, shared: 5.46 peak sun hours a day on flat ground.
−4%solar energy a year compared with the average place in Tanzania: 1,618 against 1,677 kWh per kWp.
+12 mindaylight on the longest day, compared with Dar es Salaam: 12 h 43 min against 12 h 31 min.
12°best year-round tilt here; across Tanzania it runs from 1° in Arusha to 13° in Sumbawanga.
Of the 223 places in Tanzania, Shelui and one other place get the most sun (6.25 peak sun hours a day) and Katerero and one other place the least (4.97); Ruangwa ranks joint 155th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.31 kWh a day here, against 1.14 kWh on average in Tanzania. The shortest day lasts 11 h 32 min, −11 min compared with Dar es Salaam.
Solar forecast for Ruangwa, 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 Ruangwa
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A free, live card for Ruangwa: 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.