Capital Region · Iceland · 64.07° N · 21.94° W
Solar position in Hafnarfjörður
Sun position, daylight and the best solar panel angle for Hafnarfjörður — computed for 64.07° N, 21.94° W, 39 m above sea level.
The sun right now
Sun in Hafnarfjörður today
Saturday, 24 October 2026 · local time UTC
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:03 | sun 18° below horizon |
| Nautical dawn | 06:58 | 12° below |
| Civil dawn | 07:54 | 6° below |
| Sunrise | 08:45 | 116° ESE |
| Golden hour ends | 10:01 | sun 6° up |
| Solar noon | 13:11 | 14.1° high |
| Golden hour starts | 16:21 | sun 6° up |
| Sunset | 17:37 | 244° WSW |
| Civil dusk | 18:27 | 6° below |
| Nautical dusk | 19:23 | 12° below |
| Astronomical dusk | 20:18 | 18° below |
| Day length | 8 h 52 min | |
Sun path diagram for Hafnarfjörður
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 49.4° at solar noon in Hafnarfjörður; on the December solstice only 2.7°. Sunrise swings from 20° NNE in June to 152° SSE in December — a 132° 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 | 10:39 | 13:39 | 16:39 | 6 h 01 min | 6.2° |
| February | 09:02 | 13:41 | 18:21 | 9 h 19 min | 15.6° |
| March | 07:25 | 13:35 | 19:46 | 12 h 21 min | 26.3° |
| April | 05:35 | 13:26 | 21:19 | 15 h 44 min | 37.9° |
| May | 03:55 | 13:24 | 22:55 | 19 h 01 min | 46.2° |
| June | 02:57 | 13:29 | 00:01 | 21 h 05 min | 49.4° |
| July | 04:00 | 13:34 | 23:05 | 19 h 05 min | 46.3° |
| August | 05:37 | 13:30 | 21:22 | 15 h 44 min | 37.9° |
| September | 07:07 | 13:20 | 19:32 | 12 h 24 min | 26.5° |
| October | 08:35 | 13:11 | 17:47 | 9 h 12 min | 15.2° |
| November | 10:15 | 13:13 | 16:11 | 5 h 56 min | 6.1° |
| December | 11:20 | 13:25 | 15:30 | 4 h 10 min | 2.7° |
A year of daylight in Hafnarfjörður
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 Hafnarfjörður
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
43°collects the most energy over a year: 852 kWh per kWp.
56°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° | 666 | 78% | 0.03 | 126.4× |
| 15° | 771 | 90% | 0.04 | 117.1× |
| 30° | 834 | 98% | 0.04 | 107.9× |
| 43° year-round best | 852 | 100% | 0.04 | 101.6× |
| 45° | 852 | 100% | 0.04 | 100.7× |
| 56° off-grid best | 836 | 98% | 0.04 | 95.3× |
| 60° | 824 | 97% | 0.04 | 93.2× |
| 64° = latitude | 809 | 95% | 0.04 | 91.0× |
| 70° | 781 | 92% | 0.04 | 87.7× |
| 90° | 643 | 75% | 0.04 | 74.5× |
A fixed array in Hafnarfjörður produces the most over a year at 43°. The design month for an off-grid system is December: at 56° it makes 0.04 kWh per kWp a day, 1% more than at 43°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Hafnarfjörður 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 | 0.12 | 0.34 | 0.28 | 0.24 | 1.2 °C |
| February | 0.56 | 1.26 | 1.11 | 0.98 | 1.1 °C |
| March | 1.65 | 2.57 | 2.29 | 2.23 | 1.5 °C |
| April | 3.27 | 3.75 | 3.32 | 3.58 | 3.5 °C |
| May | 4.70 | 4.38 | 3.84 | 4.48 | 5.9 °C |
| June | 5.03 | 4.22 | 3.64 | 4.42 | 9.2 °C |
| July | 4.56 | 3.98 | 3.41 | 4.07 | 11.0 °C |
| August | 3.56 | 3.72 | 3.20 | 3.57 | 10.6 °C |
| September | 2.06 | 2.83 | 2.45 | 2.49 | 8.3 °C |
| October | 0.89 | 1.79 | 1.56 | 1.43 | 5.0 °C |
| November | 0.21 | 0.58 | 0.50 | 0.42 | 2.7 °C |
| December | 0.05 | 0.06 | 0.04 | 0.04 | 1.4 °C |
| Year | 2.23 avg | 2.46 avg | 781 kWh | 852 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 26,940 Wp of panels at 70°, versus 26,730 Wp at 43°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Hafnarfjörður
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.
—The winter sun stays too low for rows to be shade-free; use a single row.
How Hafnarfjörður compares in Iceland
Against the other 5 places in Iceland with climate data, for a fixed array at its best angle.
2ndof 6 places in Iceland for sunshine, shared: 2.23 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Iceland: 852 against 854 kWh per kWp.
−4 mindaylight on the longest day, compared with Reykjavík: 21 h 05 min against 21 h 08 min.
43°best year-round tilt here; across Iceland it runs from 42° in Reykjanesbær to 47° in Akureyri.
Of the 6 places in Iceland, Akureyri gets the most sun (2.29 peak sun hours a day) and Keflavík and one other place the least (2.21); Hafnarfjörður ranks joint 2nd. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 0.04 kWh a day here, against 0.03 kWh on average in Iceland. The shortest day lasts 4 h 10 min, +2 min compared with Reykjavík.
Solar forecast for Hafnarfjörður, 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 Hafnarfjörður
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Places near Hafnarfjörður
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A free, live card for Hafnarfjörður: 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.