Moravian-Silesian Region · Czechia · 49.90° N · 18.36° E
Solar position in Bohumín
Sun position, daylight and the best solar panel angle for Bohumín — computed for 49.90° N, 18.36° E, 198 m above sea level.
The sun right now
Sun in Bohumín today
Saturday, 24 October 2026 · local time UTC+2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 05:34 | sun 18° below horizon |
| Nautical dawn | 06:11 | 12° below |
| Civil dawn | 06:49 | 6° below |
| Sunrise | 07:22 | 107° ESE |
| Golden hour ends | 08:08 | sun 6° up |
| Solar noon | 12:30 | 28.3° high |
| Golden hour starts | 16:52 | sun 6° up |
| Sunset | 17:38 | 252° WSW |
| Civil dusk | 18:11 | 6° below |
| Nautical dusk | 18:48 | 12° below |
| Astronomical dusk | 19:26 | 18° below |
| Day length | 10 h 16 min | |
Sun path diagram for Bohumín
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 63.5° at solar noon in Bohumín; on the December solstice only 16.7°. Sunrise swings from 51° NE in June to 127° SE in December — a 76° 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 | 07:33 | 11:58 | 16:22 | 8 h 49 min | 20.3° |
| February | 06:45 | 12:00 | 17:15 | 10 h 29 min | 29.7° |
| March | 05:47 | 11:54 | 18:00 | 12 h 13 min | 40.4° |
| April | 05:42 | 12:45 | 19:49 | 14 h 07 min | 52.0° |
| May | 04:53 | 12:43 | 20:33 | 15 h 40 min | 60.3° |
| June | 04:37 | 12:48 | 20:59 | 16 h 21 min | 63.5° |
| July | 05:01 | 12:52 | 20:43 | 15 h 42 min | 60.5° |
| August | 05:45 | 12:49 | 19:53 | 14 h 08 min | 52.1° |
| September | 06:31 | 12:39 | 18:47 | 12 h 16 min | 40.7° |
| October | 07:17 | 12:30 | 17:43 | 10 h 26 min | 29.3° |
| November | 07:08 | 11:32 | 15:56 | 8 h 48 min | 20.2° |
| December | 07:41 | 11:44 | 15:47 | 8 h 05 min | 16.7° |
A year of daylight in Bohumín
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 Bohumín
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
39°collects the most energy over a year: 1100 kWh per kWp.
73°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° | 904 | 82% | 0.53 | 8.1× |
| 15° | 1024 | 93% | 0.81 | 5.5× |
| 30° | 1089 | 99% | 1.06 | 4.1× |
| 39° year-round best | 1100 | 100% | 1.17 | 3.6× |
| 45° | 1094 | 100% | 1.24 | 3.3× |
| 50° = latitude | 1083 | 98% | 1.28 | 3.1× |
| 60° | 1039 | 95% | 1.35 | 2.8× |
| 70° | 972 | 88% | 1.38 | 2.5× |
| 73° off-grid best | 947 | 86% | 1.38 | 2.4× |
| 90° | 773 | 70% | 1.33 | 2.0× |
A fixed array in Bohumín produces the most over a year at 39°. The design month for an off-grid system is December: at 73° it makes 1.38 kWh per kWp a day, 18% more than at 39°, and costs 14% of the yearly total. Why steep panels win winter.
Off-grid solar in Bohumín at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 39° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 39° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 0.87 | 1.82 | 1.65 | 1.41 | -3.8 °C |
| February snow | 1.60 | 2.67 | 2.41 | 2.20 | -2.1 °C |
| March | 2.77 | 3.43 | 3.06 | 3.22 | 2.1 °C |
| April | 4.13 | 3.93 | 3.43 | 4.04 | 8.1 °C |
| May | 4.89 | 3.76 | 3.20 | 4.17 | 13.1 °C |
| June | 5.26 | 3.67 | 3.07 | 4.19 | 17.1 °C |
| July | 5.18 | 3.75 | 3.12 | 4.18 | 19.3 °C |
| August | 4.59 | 3.96 | 3.31 | 4.08 | 19.1 °C |
| September | 3.26 | 3.68 | 3.15 | 3.45 | 13.8 °C |
| October | 1.98 | 2.93 | 2.55 | 2.52 | 8.2 °C |
| November | 1.00 | 1.83 | 1.61 | 1.47 | 3.5 °C |
| December snow | 0.69 | 1.54 | 1.38 | 1.17 | -1.9 °C |
| Year | 3.03 avg | 3.08 avg | 972 kWh | 1100 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 860 Wp of panels at 70°, versus 1,000 Wp at 39°. The steep array is 15% smaller for the same winter. Size your own system.
Row spacing in Bohumín
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.
8.5 mrow pitch at 70°
6.8 mrow pitch at 39°
How Bohumín compares in Czechia
Against the other 95 places in Czechia with climate data, for a fixed array at its best angle.
57thof 96 places in Czechia for sunshine, shared: 3.03 peak sun hours a day on flat ground.
−1%solar energy a year compared with the average place in Czechia: 1,100 against 1,107 kWh per kWp.
−2 mindaylight on the longest day, compared with Prague: 16 h 21 min against 16 h 23 min.
39°best year-round tilt here; across Czechia it runs from 38° in Prague to 39° in Ostrava.
Of the 96 places in Czechia, Břeclav gets the most sun (3.25 peak sun hours a day) and Děčín and 10 other places the least (2.96); Bohumín ranks joint 57th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.38 kWh a day here, against 1.35 kWh on average in Czechia. The shortest day lasts 8 h 05 min, +2 min compared with Prague.
Solar forecast for Bohumín, 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 Bohumín
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A free, live card for Bohumín: 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.