126 places · sun position · panel angle
Solar data for Tunisia
Across the 126 places in Tunisia the best fixed tilt for solar panels runs from 29° in Houmt Souk to 31° in Kairouan, and flat ground gets 4.7 to 5.5 peak sun hours a day. Every number is computed for each place.
Solar power in Tunisia at a glance
Averages over 126 places with climate data, for a fixed array facing south.
- 4.68–4.85
- 4.85–5.02
- 5.02–5.20
- 5.20–5.37
- 5.37–5.54
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest places in Tunisia, with 5.54 peak sun hours a day on flat ground, are Nefta and 2 other places; the least sunny are Grombalia and one other place with 4.68. A 1 kWp array at its best angle makes from 1,547 kWh a year in Grombalia to 1,842 kWh in Nefta — 1,645 kWh on average.
The best year-round tilt runs from 29° in Houmt Souk to 31° in Kairouan. Off-grid systems are sized for the darkest month and do better steeper, at 59° on average: at 70° that month brings 2.87 kWh per kWp a day in Zarzis and 3.11 kWh in Béja.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in Tunisia
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 | Nefta | Tozeur Governorate | 5.54 | 1,842 | 31° |
| 1 | Douz | Kebili Governorate | 5.54 | 1,829 | 30° |
| 1 | Tataouine | Tataouine | 5.54 | 1,821 | 29° |
| 4 | Tozeur | Tozeur Governorate | 5.51 | 1,831 | 31° |
| 4 | Kebili | Kebili Governorate | 5.51 | 1,824 | 30° |
| 6 | Ar Rudayyif | Gafsa | 5.48 | 1,837 | 31° |
| 7 | Moularès | Gafsa | 5.47 | 1,837 | 31° |
| 7 | Metlaoui | Gafsa | 5.47 | 1,830 | 31° |
| 9 | Gafsa | Gafsa | 5.45 | 1,825 | 31° |
| 10 | El Hamma | Gabès Governorate | 5.43 | 1,803 | 30° |
Least sunny places in Tunisia
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 118 | Borj Cedria | Ben Arous Governorate | 4.70 | 1,555 | 30° |
| 118 | Mennzel Bou Zelfa | Nabeul Governorate | 4.70 | 1,554 | 30° |
| 118 | Beni Khalled | Nabeul Governorate | 4.70 | 1,554 | 30° |
| 125 | Soliman | Nabeul Governorate | 4.68 | 1,550 | 30° |
| 125 | Grombalia | Nabeul Governorate | 4.68 | 1,547 | 30° |
Solar by region in Tunisia
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 |
|---|---|---|---|---|---|---|
| Tataouine | 1 | 5.54 | 1,821 | 29° | 2.90 kWh | Tataouine |
| Kebili Governorate | 2 | 5.53 | 1,826 | 30° | 3.01 kWh | Douz |
| Tozeur Governorate | 2 | 5.53 | 1,837 | 31° | 3.02 kWh | Nefta |
| Gafsa | 4 | 5.47 | 1,832 | 31° | 3.02 kWh | Ar Rudayyif |
| Gabès Governorate | 7 | 5.37 | 1,780 | 30° | 2.96 kWh | El Hamma |
| Sidi Bouzid Governorate | 1 | 5.25 | 1,764 | 31° | 3.03 kWh | Sidi Bouzid |
| Medenine Governorate | 7 | 5.20 | 1,705 | 29° | 2.89 kWh | Medenine |
| Kasserine Governorate | 4 | 5.16 | 1,739 | 31° | 3.05 kWh | Feriana |
| Sfax Governorate | 9 | 5.12 | 1,696 | 30° | 2.95 kWh | Mahires |
| Kairouan | 1 | 5.06 | 1,691 | 31° | 3.04 kWh | Kairouan |
| Mahdia Governorate | 4 | 5.05 | 1,674 | 30° | 3.00 kWh | El Jem |
| Monastir Governorate | 13 | 5.01 | 1,662 | 30° | 3.02 kWh | Zeramedine |
| Sousse Governorate | 8 | 4.98 | 1,655 | 30° | 3.02 kWh | Msaken |
| Siliana Governorate | 1 | 4.96 | 1,657 | 30° | 3.08 kWh | Siliana |
| Kef Governorate | 3 | 4.92 | 1,648 | 30° | 3.08 kWh | Dahmani |
| Béja Governorate | 3 | 4.82 | 1,602 | 30° | 3.11 kWh | Tabursuq |
| Zaghouan Governorate | 2 | 4.80 | 1,594 | 30° | 3.06 kWh | El Fahs |
| Jendouba Governorate | 3 | 4.78 | 1,591 | 30° | 3.08 kWh | Jendouba |
| Manouba | 6 | 4.74 | 1,572 | 30° | 3.09 kWh | Tebourba |
| Nabeul Governorate | 13 | 4.73 | 1,564 | 30° | 3.05 kWh | Kélibia |
| Ariana Governorate | 6 | 4.72 | 1,564 | 30° | 3.08 kWh | Ettadhamen |
| Tunis Governorate | 9 | 4.72 | 1,563 | 30° | 3.08 kWh | Sīdī Ḥusayn |
| Ben Arous Governorate | 8 | 4.71 | 1,561 | 30° | 3.07 kWh | Fouchana |
| Bizerte Governorate | 9 | 4.71 | 1,563 | 30° | 3.00 kWh | Mateur |
Largest places in Tunisia at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Tunis | 36.8° N | 30° | 61° | 4.72 |
| Sfax | 34.7° N | 30° | 57° | 5.13 |
| Sousse | 35.8° N | 30° | 61° | 4.97 |
| Sukrah | 36.9° N | 30° | 61° | 4.71 |
| Kairouan | 35.7° N | 31° | 59° | 5.06 |
| Bizerte | 37.3° N | 30° | 61° | 4.70 |
| Sīdī Ḥusayn | 36.8° N | 30° | 61° | 4.73 |
| Sakiet ed Daier | 34.8° N | 30° | 57° | 5.12 |
| El Mourouj | 36.7° N | 30° | 61° | 4.72 |
| Aryanah | 36.9° N | 30° | 61° | 4.72 |
| Gabès | 33.9° N | 30° | 52° | 5.36 |
| Hammamet | 36.4° N | 30° | 60° | 4.74 |
| Sakiet ez Zit | 34.8° N | 30° | 57° | 5.12 |
| Gafsa | 34.4° N | 31° | 50° | 5.45 |
| Rawad | 36.9° N | 30° | 61° | 4.72 |
| Monastir | 35.8° N | 30° | 60° | 4.97 |
| La Marsa | 36.9° N | 30° | 61° | 4.71 |
| Msaken | 35.7° N | 30° | 60° | 5.02 |
| Houmt Souk | 33.9° N | 29° | 55° | 5.17 |
| Ben Arous | 36.8° N | 30° | 61° | 4.72 |
Daylight and clock time in Tunisia
In Bizerte (37.3° N), the northernmost place, the longest day of the year lasts 14 h 44 min and the shortest 9 h 36 min; in Tataouine (32.9° N), the southernmost, 14 h 20 min and 9 h 59 min. Tunisia does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Africa/Tunis | 126 | UTC+1 | no daylight saving time |