223 places · sun position · panel angle
Solar data for Tanzania
Across the 223 places in Tanzania the best fixed tilt for solar panels runs from 1° in Arusha to 13° in Sumbawanga, and flat ground gets 5.0 to 6.2 peak sun hours a day. Every number is computed for each place.
Solar power in Tanzania at a glance
Averages over 223 places with climate data, for a fixed array facing north.
- 4.97–5.22
- 5.22–5.48
- 5.48–5.73
- 5.73–5.99
- 5.99–6.25
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest places in Tanzania, with 6.25 peak sun hours a day on flat ground, are Shelui and one other place; the least sunny are Katerero and one other place with 4.97. A 1 kWp array at its best angle makes from 1,459 kWh a year in Katerero to 1,853 kWh in Shelui — 1,677 kWh on average.
The best year-round tilt runs from 1° in Arusha to 13° in Sumbawanga. Off-grid systems are sized for the darkest month and do better steeper, at 7° on average: at 70° that month brings 0.99 kWh per kWp a day in Chake Chake and 1.41 kWh in Songea.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in Tanzania
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 | Shelui | Singida | 6.25 | 1,853 | 7° |
| 1 | Igunga | Tabora | 6.25 | 1,849 | 7° |
| 3 | Kiomboi | Singida | 6.23 | 1,850 | 6° |
| 4 | Sepuka | Singida | 6.22 | 1,848 | 7° |
| 5 | Igugunu | Singida | 6.20 | 1,844 | 7° |
| 6 | Mwanhuzi | Simiyu | 6.18 | 1,827 | 5° |
| 6 | Kishapu | Shinyanga | 6.18 | 1,823 | 6° |
| 8 | Nzega | Tabora | 6.17 | 1,819 | 7° |
| 8 | Mwadui | Shinyanga | 6.17 | 1,817 | 6° |
| 10 | Singida | Singida | 6.16 | 1,830 | 7° |
Least sunny places in Tanzania
Solar by region in Tanzania
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 |
|---|---|---|---|---|---|---|
| Singida | 13 | 6.16 | 1,831 | 7° | 1.12 kWh | Shelui |
| Shinyanga | 9 | 6.09 | 1,795 | 6° | 1.06 kWh | Kishapu |
| Tabora | 7 | 6.09 | 1,801 | 8° | 1.15 kWh | Igunga |
| Simiyu | 10 | 6.07 | 1,788 | 5° | 1.03 kWh | Mwanhuzi |
| Dodoma | 5 | 5.94 | 1,763 | 6° | 1.09 kWh | Dodoma |
| Manyara | 10 | 5.92 | 1,764 | 4° | 1.08 kWh | Basotu |
| Iringa | 5 | 5.85 | 1,750 | 9° | 1.19 kWh | Mafinga |
| Mara | 12 | 5.84 | 1,719 | 2° | 1.02 kWh | Sirari |
| Mwanza | 8 | 5.82 | 1,709 | 5° | 1.02 kWh | Ngudu |
| Songwe | 3 | 5.82 | 1,753 | 13° | 1.31 kWh | Mlowo |
| Pemba South | 2 | 5.80 | 1,681 | 4° | 0.99 kWh | Chake Chake |
| Pemba North | 1 | 5.80 | 1,680 | 3° | 0.99 kWh | Wete |
| Rukwa | 6 | 5.77 | 1,736 | 13° | 1.24 kWh | Laela |
| Mbeya | 13 | 5.76 | 1,735 | 12° | 1.29 kWh | Matundasi |
| Katavi | 2 | 5.74 | 1,711 | 12° | 1.22 kWh | Usevia |
| Zanzibar Central/South | 1 | 5.70 | 1,653 | 6° | 1.03 kWh | Sokoni |
| Arusha | 8 | 5.66 | 1,675 | 2° | 1.01 kWh | Kiratu |
| Zanzibar North | 1 | 5.64 | 1,638 | 4° | 1.02 kWh | Nungwi |
| Zanzibar Urban/West | 1 | 5.56 | 1,617 | 5° | 1.05 kWh | Zanzibar |
| Dar es Salaam Region | 1 | 5.56 | 1,616 | 6° | 1.07 kWh | Dar es Salaam |
| Geita | 10 | 5.55 | 1,637 | 6° | 1.12 kWh | Masumbwe |
| Mtwara | 11 | 5.49 | 1,632 | 12° | 1.34 kWh | Mtwara |
| Kilimanjaro | 7 | 5.49 | 1,616 | 1° | 1.02 kWh | Tarakea |
| Lindi | 6 | 5.47 | 1,622 | 11° | 1.28 kWh | Kilwa Masoko |
| Njombe | 5 | 5.47 | 1,647 | 11° | 1.31 kWh | Ilembula |
| Tanga | 11 | 5.44 | 1,592 | 3° | 1.07 kWh | Tanga |
| Pwani | 14 | 5.43 | 1,584 | 6° | 1.10 kWh | Kilindoni |
| Kigoma | 7 | 5.38 | 1,593 | 8° | 1.19 kWh | Nguruka |
| Morogoro | 16 | 5.36 | 1,580 | 6° | 1.17 kWh | Geiro |
| Ruvuma | 8 | 5.35 | 1,596 | 12° | 1.37 kWh | Matiri |
| Kagera | 10 | 5.07 | 1,499 | 4° | 1.15 kWh | Biharamulo |
Largest places in Tanzania at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Dar es Salaam | 6.8° S | 6° | 18° | 5.56 |
| Mwanza | 2.5° S | 4° | 0° | 5.70 |
| Dodoma | 6.2° S | 7° | 10° | 6.11 |
| Zanzibar | 6.2° S | 5° | 21° | 5.56 |
| Arusha | 3.4° S | 1° | 18° | 5.60 |
| Mbeya | 8.9° S | 12° | 0° | 5.82 |
| Morogoro | 6.8° S | 5° | 19° | 5.26 |
| Kahama | 3.8° S | 7° | 0° | 5.94 |
| Tanga | 5.1° S | 3° | 21° | 5.59 |
| Geita | 2.9° S | 6° | 0° | 5.57 |
| Tabora | 5.0° S | 8° | 0° | 6.09 |
| Sumbawanga | 8.0° S | 13° | 0° | 5.81 |
| Songea | 10.7° S | 11° | 11° | 5.26 |
| Kibaha | 6.8° S | 6° | 18° | 5.41 |
| Bariadi | 2.8° S | 4° | 1° | 5.99 |
| Kasulu | 4.6° S | 9° | 0° | 5.36 |
| Singida | 4.8° S | 7° | 3° | 6.16 |
| Kigoma | 4.9° S | 9° | 0° | 5.26 |
| Moshi | 3.4° S | 1° | 19° | 5.48 |
| Tunduma | 9.3° S | 13° | 0° | 5.80 |
Daylight and clock time in Tanzania
In Shirati (1.1° S), the northernmost place, the longest day of the year lasts 12 h 11 min and the shortest 12 h 03 min; in Tingi (11.3° S), the southernmost, 12 h 47 min and 11 h 28 min. Tanzania does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Africa/Dar_es_Salaam | 223 | UTC+3 | no daylight saving time |