Eastern Province · Sri Lanka · 7.71° N · 81.69° E
Solar position in Batticaloa
Sun position, daylight and the best solar panel angle for Batticaloa — computed for 7.71° N, 81.69° E, 17 m above sea level.
The sun right now
Sun in Batticaloa today
Saturday, 24 October 2026 · local time UTC+5:30
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:39 | sun 18° below horizon |
| Nautical dawn | 05:04 | 12° below |
| Civil dawn | 05:29 | 6° below |
| Sunrise | 05:50 | 102° ESE |
| Golden hour ends | 06:18 | sun 6° up |
| Solar noon | 11:47 | 70.5° high |
| Golden hour starts | 17:16 | sun 6° up |
| Sunset | 17:44 | 258° WSW |
| Civil dusk | 18:05 | 6° below |
| Nautical dusk | 18:30 | 12° below |
| Astronomical dusk | 18:54 | 18° below |
| Day length | 11 h 54 min | |
Sun path diagram for Batticaloa
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 74.3° at solar noon in Batticaloa; on the December solstice only 58.9°. 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 | 06:22 | 12:14 | 18:06 | 11 h 45 min | 62.4° |
| February | 06:19 | 12:16 | 18:14 | 11 h 55 min | 71.8° |
| March | 06:07 | 12:10 | 18:13 | 12 h 07 min | 82.6° |
| April | 05:52 | 12:01 | 18:11 | 12 h 20 min | 85.8° |
| May | 05:44 | 11:59 | 18:14 | 12 h 30 min | 77.5° |
| June | 05:47 | 12:04 | 18:22 | 12 h 34 min | 74.3° |
| July | 05:54 | 12:09 | 18:24 | 12 h 30 min | 77.3° |
| August | 05:56 | 12:06 | 18:16 | 12 h 20 min | 85.6° |
| September | 05:52 | 11:56 | 17:59 | 12 h 07 min | 83.0° |
| October | 05:50 | 11:47 | 17:45 | 11 h 55 min | 71.6° |
| November | 05:56 | 11:48 | 17:41 | 11 h 45 min | 62.4° |
| December | 06:10 | 12:01 | 17:51 | 11 h 41 min | 58.9° |
A year of daylight in Batticaloa
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 Batticaloa
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
5°collects the most energy over a year: 1572 kWh per kWp.
26°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 | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1567 | 100% | 3.15 | 1.6× |
| 5° year-round best | 1572 | 100% | 3.27 | 1.5× |
| 8° = latitude | 1571 | 100% | 3.34 | 1.5× |
| 15° | 1553 | 99% | 3.46 | 1.4× |
| 26° off-grid best | 1488 | 95% | 3.57 | 1.3× |
| 30° | 1454 | 92% | 3.58 | 1.4× |
| 45° | 1275 | 81% | 3.51 | 1.7× |
| 60° | 1034 | 66% | 3.25 | 2.3× |
| 70° | 856 | 54% | 2.97 | 2.8× |
| 90° | 572 | 36% | 2.23 | 2.4× |
A fixed array in Batticaloa produces the most over a year at 5°. The design month for an off-grid system is December: at 26° it makes 3.57 kWh per kWp a day, 9% more than at 5°, and costs 5% of the yearly total. Why steep panels win winter.
Off-grid solar in Batticaloa at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 5° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 5° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.57 | 4.07 | 3.33 | 3.76 | 25.5 °C |
| February | 5.38 | 4.08 | 3.33 | 4.39 | 26.0 °C |
| March | 6.19 | 3.58 | 2.90 | 4.95 | 27.1 °C |
| April | 6.07 | 2.34 | 1.86 | 4.75 | 28.3 °C |
| May | 5.87 | 1.68 | 1.31 | 4.52 | 28.9 °C |
| June | 5.79 | 1.51 | 1.17 | 4.43 | 28.7 °C |
| July | 5.75 | 1.64 | 1.28 | 4.42 | 28.6 °C |
| August | 5.92 | 2.07 | 1.64 | 4.60 | 28.7 °C |
| September | 5.90 | 2.98 | 2.39 | 4.66 | 28.5 °C |
| October | 5.43 | 3.74 | 3.03 | 4.37 | 27.7 °C |
| November | 4.40 | 3.69 | 3.00 | 3.59 | 26.6 °C |
| December | 3.99 | 3.65 | 2.97 | 3.27 | 26.0 °C |
| Year | 5.44 avg | 2.91 avg | 856 kWh | 1572 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 1,010 Wp of panels at 70°, versus 360 Wp at 5°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Batticaloa
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°
2.1 mrow pitch at 5°
How Batticaloa compares in Sri Lanka
Against the other 59 places in Sri Lanka with climate data, for a fixed array at its best angle.
18thof 60 places in Sri Lanka for sunshine, shared: 5.44 peak sun hours a day on flat ground.
+1%solar energy a year compared with the average place in Sri Lanka: 1,572 against 1,564 kWh per kWp.
+3 mindaylight on the longest day, compared with Colombo: 12 h 34 min against 12 h 32 min.
5°best year-round tilt here; across Sri Lanka it runs from 4° in Ampara to 8° in Jaffna.
Of the 60 places in Sri Lanka, Chilaw gets the most sun (5.56 peak sun hours a day) and Ratnapura the least (5.12); Batticaloa ranks joint 18th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.17 kWh a day here, against 1.22 kWh on average in Sri Lanka. The shortest day lasts 11 h 41 min, −3 min compared with Colombo.
Solar forecast for Batticaloa, 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 Batticaloa
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A free, live card for Batticaloa: 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.