South Georgia and the South Sandwich Islands · 54.28° S · 36.51° W
Solar position in Grytviken
Sun position, daylight and the best solar panel angle for Grytviken — computed for 54.28° S, 36.51° W, 4 m above sea level.
The sun right now
Sun in Grytviken today
Saturday, 24 October 2026 · local time UTC−2
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 02:26 | sun 18° below horizon |
| Nautical dawn | 03:27 | 12° below |
| Civil dawn | 04:17 | 6° below |
| Sunrise | 04:56 | 112° ESE |
| Golden hour ends | 05:45 | sun 6° up |
| Solar noon | 12:10 | 47.6° high |
| Golden hour starts | 18:35 | sun 6° up |
| Sunset | 19:25 | 248° WSW |
| Civil dusk | 20:04 | 6° below |
| Nautical dusk | 20:55 | 12° below |
| Astronomical dusk | 21:57 | 18° below |
| Day length | 14 h 28 min | |
Sun path diagram for Grytviken
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 12.4° at solar noon in Grytviken; on the December solstice only 59.2°. Sunrise swings from 49° NE in June to 135° SE in December — a 86° 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 | 04:29 | 12:37 | 20:44 | 16 h 15 min | 55.5° |
| February | 05:33 | 12:39 | 19:44 | 14 h 10 min | 46.1° |
| March | 06:29 | 12:32 | 18:36 | 12 h 07 min | 35.3° |
| April | 07:26 | 12:24 | 17:21 | 9 h 55 min | 23.8° |
| May | 08:18 | 12:22 | 16:25 | 8 h 07 min | 15.5° |
| June | 08:48 | 12:27 | 16:07 | 7 h 19 min | 12.4° |
| July | 08:30 | 12:32 | 16:35 | 8 h 05 min | 15.4° |
| August | 07:32 | 12:29 | 17:26 | 9 h 55 min | 23.8° |
| September | 06:17 | 12:19 | 18:22 | 12 h 05 min | 35.2° |
| October | 05:03 | 12:10 | 19:19 | 14 h 15 min | 46.6° |
| November | 04:03 | 12:12 | 20:21 | 16 h 18 min | 55.7° |
| December | 03:47 | 12:24 | 21:00 | 17 h 13 min | 59.2° |
A year of daylight in Grytviken
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 Grytviken
Fixed array facing north (azimuth 0°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
41°collects the most energy over a year: 911 kWh per kWp.
76°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° | 738 | 81% | 0.29 | 14.9× |
| 15° | 840 | 92% | 0.47 | 9.6× |
| 30° | 898 | 99% | 0.63 | 7.1× |
| 41° year-round best | 911 | 100% | 0.73 | 5.9× |
| 45° | 909 | 100% | 0.76 | 5.5× |
| 54° = latitude | 892 | 98% | 0.81 | 4.8× |
| 60° | 871 | 96% | 0.84 | 4.4× |
| 70° | 821 | 90% | 0.86 | 3.8× |
| 76° off-grid best | 782 | 86% | 0.87 | 3.5× |
| 90° | 668 | 73% | 0.84 | 3.0× |
A fixed array in Grytviken produces the most over a year at 41°. The design month for an off-grid system is June: at 76° it makes 0.87 kWh per kWp a day, 19% more than at 41°, and costs 14% of the yearly total. Why steep panels win winter.
Off-grid solar in Grytviken at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 41° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 41° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.48 | 3.50 | 3.09 | 3.94 | 2.7 °C |
| February | 3.60 | 3.37 | 2.98 | 3.50 | 3.0 °C |
| March | 2.34 | 2.72 | 2.41 | 2.58 | 2.6 °C |
| April | 1.29 | 2.02 | 1.79 | 1.73 | 1.4 °C |
| May snow | 0.63 | 1.34 | 1.18 | 1.03 | 0.0 °C |
| June snow | 0.40 | 0.98 | 0.86 | 0.73 | -0.9 °C |
| July snow | 0.50 | 1.17 | 1.04 | 0.89 | -1.9 °C |
| August snow | 1.00 | 1.84 | 1.64 | 1.50 | -1.9 °C |
| September snow | 1.98 | 2.74 | 2.46 | 2.45 | -1.4 °C |
| October snow | 3.16 | 3.41 | 3.06 | 3.33 | -0.5 °C |
| November | 4.42 | 3.64 | 3.25 | 4.04 | 0.6 °C |
| December | 4.99 | 3.71 | 3.29 | 4.28 | 1.8 °C |
| Year | 2.39 avg | 2.53 avg | 821 kWh | 911 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 1,370 Wp of panels at 70°, versus 1,620 Wp at 41°. The steep array is 16% smaller for the same winter. Size your own system.
Row spacing in Grytviken
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.
12.4 mrow pitch at 70°
9.7 mrow pitch at 41°
Solar forecast for Grytviken, 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 Grytviken
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A free, live card for Grytviken: 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.