18 places · sun position · panel angle
Solar data for Namibia
Across the 18 places in Namibia the best fixed tilt for solar panels runs from 20° in Oshakati to 27° in Keetmanshoop, and flat ground gets 5.8 to 6.5 peak sun hours a day. Every number is computed for each place.
Solar power in Namibia at a glance
Averages over 18 places with climate data, for a fixed array facing north.
- 5.81–5.94
- 5.94–6.08
- 6.08–6.21
- 6.21–6.34
- 6.34–6.48
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest places in Namibia, with 6.48 peak sun hours a day on flat ground, are Keetmanshoop and one other place; the least sunny is Walvis Bay with 5.81. A 1 kWp array at its best angle makes from 1,842 kWh a year in Katima Mulilo to 2,099 kWh in Keetmanshoop — 1,951 kWh on average.
The best year-round tilt runs from 20° in Oshakati to 27° in Keetmanshoop. Off-grid systems are sized for the darkest month and do better steeper, at 21° on average: at 70° that month brings 1.67 kWh per kWp a day in Helao Nafidi and 2.47 kWh in Lüderitz.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in Namibia
Ranked by peak sun hours on flat ground: the yearly average of a day's sunshine energy (NASA POWER climatology). Output: 1 kWp at its best year-round angle.
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 1 | Keetmanshoop | Karas Region | 6.48 | 2,099 | 27° |
| 1 | Rehoboth | Hardap Region | 6.48 | 2,075 | 25° |
| 3 | Windhoek | Khomas Region | 6.40 | 2,054 | 24° |
| 3 | Okahandja | Otjozondjupa Region | 6.40 | 2,042 | 24° |
| 5 | Oshakati | Oshana Region | 6.32 | 1,943 | 20° |
| 6 | Ongwediva | Oshana Region | 6.31 | 1,940 | 20° |
| 7 | Ondangwa | Oshana Region | 6.29 | 1,934 | 20° |
| 8 | Lüderitz | Karas Region | 6.27 | 2,036 | 26° |
| 8 | Helao Nafidi | Ohangwena Region | 6.27 | 1,929 | 20° |
| 10 | Gobabis | Omaheke Region | 6.26 | 2,003 | 25° |
Solar by region in Namibia
Averages of the places in each region, sunniest first. Darkest month: what 1 kWp of off-grid panels at 70° makes a day in the worst month of the year.
| Region | Places | Sun hours/day | kWh per kWp a year | Best tilt | Darkest month at 70° | Sunniest place |
|---|---|---|---|---|---|---|
| Hardap Region | 1 | 6.48 | 2,075 | 25° | 2.08 kWh | Rehoboth |
| Khomas Region | 1 | 6.40 | 2,054 | 24° | 2.00 kWh | Windhoek |
| Karas Region | 2 | 6.37 | 2,068 | 27° | 2.42 kWh | Keetmanshoop |
| Oshana Region | 3 | 6.30 | 1,939 | 20° | 1.71 kWh | Oshakati |
| Ohangwena Region | 1 | 6.27 | 1,929 | 20° | 1.67 kWh | Helao Nafidi |
| Omaheke Region | 1 | 6.26 | 2,003 | 25° | 1.99 kWh | Gobabis |
| Otjozondjupa Region | 3 | 6.26 | 1,978 | 23° | 1.85 kWh | Okahandja |
| Oshikoto Region | 1 | 6.12 | 1,915 | 22° | 1.76 kWh | Tsumeb |
| Kavango East | 2 | 5.98 | 1,858 | 21° | 1.74 kWh | Rundu |
| Zambezi Region | 1 | 5.94 | 1,842 | 21° | 1.67 kWh | Katima Mulilo |
| Erongo Region | 2 | 5.83 | 1,850 | 22° | 2.18 kWh | Swakopmund |
Largest places in Namibia at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Windhoek | 22.6° S | 24° | 21° | 6.40 |
| Rundu | 17.9° S | 21° | 15° | 6.00 |
| Walvis Bay | 23.0° S | 22° | 34° | 5.81 |
| Swakopmund | 22.7° S | 22° | 32° | 5.86 |
| Oshakati | 17.8° S | 20° | 15° | 6.32 |
| Rehoboth | 23.3° S | 25° | 25° | 6.48 |
| Katima Mulilo | 17.5° S | 21° | 11° | 5.94 |
| Otjiwarongo | 20.5° S | 23° | 18° | 6.24 |
| Ondangwa | 17.9° S | 20° | 15° | 6.29 |
| Okahandja | 22.0° S | 24° | 21° | 6.40 |
| Grootfontein | 19.6° S | 22° | 16° | 6.13 |
| Ongwediva | 17.8° S | 20° | 15° | 6.31 |
| Keetmanshoop | 26.6° S | 27° | 32° | 6.48 |
| Helao Nafidi | 17.4° S | 20° | 14° | 6.27 |
| Tsumeb | 19.2° S | 22° | 16° | 6.12 |
| Gobabis | 22.5° S | 25° | 21° | 6.26 |
| Ndiyona | 18.0° S | 21° | 13° | 5.97 |
| Lüderitz | 26.6° S | 26° | 38° | 6.27 |
Daylight and clock time in Namibia
In Helao Nafidi (17.4° S), the northernmost place, the longest day of the year lasts 13 h 10 min and the shortest 11 h 05 min; in Lüderitz (26.6° S), the southernmost, 13 h 49 min and 10 h 28 min. Namibia does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Africa/Windhoek | 18 | UTC+2 | no daylight saving time |