Southern Peninsula · Iceland · 64.00° N · 22.56° W
Solar position in Keflavík
Sun position, daylight and the best solar panel angle for Keflavík — computed for 64.00° N, 22.56° W, 5 m above sea level.
The sun right now
Sun in Keflavík today
Saturday, 24 October 2026 · local time UTC
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:06 | sun 18° below horizon |
| Nautical dawn | 07:01 | 12° below |
| Civil dawn | 07:57 | 6° below |
| Sunrise | 08:47 | 116° ESE |
| Golden hour ends | 10:03 | sun 6° up |
| Solar noon | 13:13 | 14.2° high |
| Golden hour starts | 16:24 | sun 6° up |
| Sunset | 17:40 | 244° WSW |
| Civil dusk | 18:30 | 6° below |
| Nautical dusk | 19:25 | 12° below |
| Astronomical dusk | 20:20 | 18° below |
| Day length | 8 h 53 min | |
Sun path diagram for Keflavík
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 Keflavík; on the December solstice only 2.8°. Sunrise swings from 20° NNE in June to 151° SSE in December — a 131° 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 | 10:40 | 13:41 | 16:42 | 6 h 02 min | 6.3° |
| February | 09:04 | 13:44 | 18:24 | 9 h 19 min | 15.6° |
| March | 07:27 | 13:37 | 19:48 | 12 h 21 min | 26.4° |
| April | 05:38 | 13:29 | 21:21 | 15 h 44 min | 38.0° |
| May | 03:58 | 13:27 | 22:57 | 18 h 59 min | 46.3° |
| June | 03:01 | 13:32 | 00:02 | 21 h 02 min | 49.4° |
| July | 04:03 | 13:36 | 23:07 | 19 h 03 min | 46.4° |
| August | 05:40 | 13:33 | 21:24 | 15 h 44 min | 38.0° |
| September | 07:10 | 13:22 | 19:34 | 12 h 24 min | 26.6° |
| October | 08:38 | 13:14 | 17:50 | 9 h 12 min | 15.2° |
| November | 10:16 | 13:15 | 16:14 | 5 h 58 min | 6.1° |
| December | 11:22 | 13:28 | 15:34 | 4 h 12 min | 2.8° |
A year of daylight in Keflavík
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 Keflavík
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
42°collects the most energy over a year: 833 kWh per kWp.
4°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° | 661 | 79% | 0.03 | 129.1× |
| 4° off-grid best | 691 | 83% | 0.03 | 132.2× |
| 15° | 760 | 91% | 0.03 | 139.9× |
| 30° | 818 | 98% | 0.03 | 148.1× |
| 42° year-round best | 833 | 100% | 0.03 | 154.1× |
| 45° | 832 | 100% | 0.03 | 155.7× |
| 60° | 802 | 96% | 0.03 | 161.6× |
| 64° = latitude | 786 | 94% | 0.02 | 162.5× |
| 70° | 758 | 91% | 0.02 | 163.2× |
| 90° | 620 | 74% | 0.02 | — |
A fixed array in Keflavík produces the most over a year at 42°. The design month for an off-grid system is December: at 4° it makes 0.03 kWh per kWp a day, 12% more than at 42°, and costs 17% of the yearly total. Why steep panels win winter.
Off-grid solar in Keflavík at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 42° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 42° | Mean temp. |
|---|---|---|---|---|---|
| January | 0.12 | 0.23 | 0.19 | 0.17 | 2.4 °C |
| February | 0.56 | 1.18 | 1.03 | 0.92 | 2.1 °C |
| March | 1.59 | 2.41 | 2.13 | 2.08 | 2.5 °C |
| April | 3.15 | 3.60 | 3.17 | 3.42 | 4.1 °C |
| May | 4.68 | 4.38 | 3.83 | 4.48 | 6.3 °C |
| June | 5.04 | 4.23 | 3.64 | 4.44 | 9.3 °C |
| July | 4.59 | 4.01 | 3.43 | 4.11 | 11.0 °C |
| August | 3.53 | 3.69 | 3.16 | 3.54 | 10.9 °C |
| September | 2.06 | 2.78 | 2.40 | 2.44 | 8.8 °C |
| October | 0.87 | 1.66 | 1.44 | 1.32 | 5.9 °C |
| November | 0.20 | 0.48 | 0.40 | 0.34 | 3.9 °C |
| December | 0.05 | 0.03 | 0.02 | 0.03 | 2.7 °C |
| Year | 2.21 avg | 2.40 avg | 758 kWh | 833 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 50,290 Wp of panels at 70°, versus 40,550 Wp at 42°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Keflavík
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 Keflavík compares in Iceland
Against the other 5 places in Iceland with climate data, for a fixed array at its best angle.
5thof 6 places in Iceland for sunshine, shared: 2.21 peak sun hours a day on flat ground.
−2%solar energy a year compared with the average place in Iceland: 833 against 854 kWh per kWp.
−7 mindaylight on the longest day, compared with Reykjavík: 21 h 02 min against 21 h 08 min.
42°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); Keflavík ranks joint 5th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 0.02 kWh a day here, against 0.03 kWh on average in Iceland. The shortest day lasts 4 h 12 min, +4 min compared with Reykjavík.
Solar forecast for Keflavík, 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 Keflavík
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Places near Keflavík
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A free, live card for Keflavík: 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.