Tierra del Fuego · Argentina · 54.81° S · 68.32° W
Solar position in Ushuaia
Sun position, daylight and the best solar panel angle for Ushuaia — computed for 54.81° S, 68.32° W, 6 m above sea level.
The sun right now
Sun in Ushuaia today
Saturday, 24 October 2026 · local time UTC−3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 03:27 | sun 18° below horizon |
| Nautical dawn | 04:30 | 12° below |
| Civil dawn | 05:22 | 6° below |
| Sunrise | 06:02 | 112° ESE |
| Golden hour ends | 06:51 | sun 6° up |
| Solar noon | 13:17 | 47.1° high |
| Golden hour starts | 19:44 | sun 6° up |
| Sunset | 20:33 | 248° WSW |
| Civil dusk | 21:14 | 6° below |
| Nautical dusk | 22:06 | 12° below |
| Astronomical dusk | 23:10 | 18° below |
| Day length | 14 h 32 min | |
Sun path diagram for Ushuaia
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 11.8° at solar noon in Ushuaia; on the December solstice only 58.6°. Sunrise swings from 48° NE in June to 135° SE in December — a 87° 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 | 05:33 | 13:44 | 21:54 | 16 h 20 min | 55.0° |
| February | 06:39 | 13:46 | 20:52 | 14 h 13 min | 45.6° |
| March | 07:36 | 13:39 | 19:43 | 12 h 07 min | 34.8° |
| April | 08:35 | 13:31 | 18:27 | 9 h 52 min | 23.2° |
| May | 09:28 | 13:29 | 17:30 | 8 h 01 min | 15.0° |
| June | 09:58 | 13:35 | 17:11 | 7 h 12 min | 11.8° |
| July | 09:39 | 13:39 | 17:40 | 8 h 00 min | 14.9° |
| August | 08:40 | 13:36 | 18:33 | 9 h 53 min | 23.3° |
| September | 07:24 | 13:26 | 19:29 | 12 h 06 min | 34.7° |
| October | 06:09 | 13:18 | 20:27 | 14 h 19 min | 46.1° |
| November | 05:08 | 13:19 | 21:31 | 16 h 23 min | 55.2° |
| December | 04:51 | 13:31 | 22:11 | 17 h 20 min | 58.6° |
A year of daylight in Ushuaia
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 Ushuaia
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
43°collects the most energy over a year: 1007 kWh per kWp.
78°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 | June kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 788 | 78% | 0.31 | 14.4× |
| 15° | 912 | 90% | 0.57 | 8.1× |
| 30° | 986 | 98% | 0.80 | 5.7× |
| 43° year-round best | 1007 | 100% | 0.97 | 4.5× |
| 45° | 1007 | 100% | 0.99 | 4.3× |
| 55° = latitude | 990 | 98% | 1.08 | 3.7× |
| 60° | 972 | 97% | 1.12 | 3.4× |
| 70° | 920 | 91% | 1.16 | 2.9× |
| 78° off-grid best | 862 | 86% | 1.17 | 2.6× |
| 90° | 752 | 75% | 1.15 | 2.2× |
A fixed array in Ushuaia produces the most over a year at 43°. The design month for an off-grid system is June: at 78° it makes 1.17 kWh per kWp a day, 21% more than at 43°, and costs 14% of the yearly total. Why steep panels win winter.
Off-grid solar in Ushuaia at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 43° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 43° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.88 | 3.84 | 3.35 | 4.19 | 7.2 °C |
| February | 3.98 | 3.79 | 3.31 | 3.85 | 7.1 °C |
| March | 2.59 | 3.13 | 2.75 | 2.93 | 5.9 °C |
| April | 1.41 | 2.36 | 2.08 | 2.01 | 3.5 °C |
| May | 0.72 | 1.77 | 1.57 | 1.38 | 1.5 °C |
| June snow | 0.43 | 1.30 | 1.16 | 0.97 | -0.6 °C |
| July snow | 0.56 | 1.57 | 1.40 | 1.19 | -1.2 °C |
| August snow | 1.11 | 2.24 | 2.01 | 1.83 | -0.5 °C |
| September | 2.18 | 2.99 | 2.67 | 2.73 | 1.5 °C |
| October | 3.51 | 3.61 | 3.20 | 3.61 | 3.4 °C |
| November | 4.64 | 3.84 | 3.38 | 4.15 | 4.9 °C |
| December | 5.19 | 3.91 | 3.41 | 4.36 | 6.3 °C |
| Year | 2.59 avg | 2.86 avg | 920 kWh | 1007 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 1,020 Wp of panels at 70°, versus 1,220 Wp at 43°. The steep array is 16% smaller for the same winter. Size your own system.
Row spacing in Ushuaia
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.
13.1 mrow pitch at 70°
10.5 mrow pitch at 43°
How Ushuaia compares in Argentina
Against the other 313 places in Argentina with climate data, for a fixed array at its best angle.
314thof 314 places in Argentina for sunshine: 2.59 peak sun hours a day on flat ground.
−39%solar energy a year compared with the average place in Argentina: 1,007 against 1,639 kWh per kWp.
+2 h 51 mindaylight on the longest day, compared with Buenos Aires: 17 h 20 min against 14 h 29 min.
43°best year-round tilt here; across Argentina it runs from 21° in Tartagal to 44° in Río Gallegos.
Ushuaia gets the least sun of the 314 places in Argentina (2.59 peak sun hours a day); the sunniest is Belén with 6.11. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.16 kWh a day here, against 2.68 kWh on average in Argentina. The shortest day lasts 7 h 12 min, −2 h 38 min compared with Buenos Aires.
Solar forecast for Ushuaia, 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 Ushuaia
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A free, live card for Ushuaia: 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.