How many days do you need in Tozeur?
Give it 4 days. Tozeur is a remote desert oasis; you need time for the 7-hour transfer from Tunis and to navigate the palm groves. It serves as the gateway to the Sahara and iconic Star Wars filming locations like Mos Espa.
Short answer

2 days
Focus on the historic Ouled el-Hadef medina and the massive 250,000-tree Palmeraie. You will have time for a sunset 4x4 excursion to the neck-breaking dunes of Ong Jemel and the Mos Espa film set.
You give up: You skip the mountain oases of Chebika and Tamerza, and the vast salt flats of Chott el Djerid.
3 days
Visit the ancient brickwork of the Medina and the Eden Palm museum. Dedicate a full day to a 4x4 loop reaching the mountain canyons of Tamerza, Mides, and the waterfalls at Chebika near the Algerian border.
You give up: You will miss the train ride on the Red Lizard through Selja Gorges and the southern dunes of Douz.
4 days
Includes everything in the 3-day plan plus a trip across the Chott el Djerid salt pan to reach Douz. You can enjoy a slower pace in the brick-patterned alleys and visit the Chak Wak theme park.
You give up: Very little, though you might lack time for an overnight deep-Sahara camel trek to Ksar Ghilane.
If you can stay longer
An extra 3 days allows for an overnight expedition into the Grand Erg Oriental or a trip to Nefta to see the Corbeille. You could also ride the historic Lezard Rouge train through the Selja Gorges if it is operational.
Lock in the dates
Common questions
How do I get there?
The most reliable way is a 7-8 hour drive or louage (shared taxi) from Tunis. While there is an airport, domestic flights are infrequent and often cancelled, so ground transport via Gafsa is the standard local reality for travelers.
When is the best time to visit?
Visit between October and April. Summer temperatures regularly exceed 45°C, making outdoor exploration dangerous. Late autumn is particularly special because it coincides with the Deglet Nour date harvest, where you can see the palm groves in full production.
Is it safe to visit the mountain oases?
Yes, Chebika and Tamerza are safe and popular. However, they are close to the Algerian border, so expect military checkpoints. Always carry your passport and stick to established 4x4 routes with a local driver who knows the desert tracks.