Djerba weather in September

Forum posters cite typical December highs in Djerba around 18C with sea temperatures near 16C, cold enough that most beaches see only local fishermen and walkers rather than sunbathers, though a warm, sunny stretch does make sunbathing possible on the right day. Posters describe December, January and February as historically Tunisia's coldest, wettest months, with weather genuinely changeable - warm days can be followed by cold, wet, windy ones within the same week. A local resident specifically recommended early December as the better bet within the winter stretch. Posters consistently recommend a hotel with a heated indoor pool given how unreliable outdoor swimming conditions run. Posters generally rate December as mild by day when the sun cooperates but genuinely variable and occasionally wet, workable with realistic expectations and indoor pool access as a backup.

Forum posters describe June as fabulous - glorious sunshine, blue skies, and temperatures typically in the early-to-mid 30sC, with a near-constant island breeze that posters say makes the heat feel more tolerable than the same temperature on the Tunisian mainland. Rain is possible but posters call it rare and, when it happens, a short heavy burst rather than a sustained wet spell. Posters do note evenings can cool down noticeably, so a light jacket or cardigan for the night is standard packing advice. Several posters specifically recommend June onward as the point when sea temperatures turn genuinely pleasant for swimming, alongside more settled overall conditions than earlier in spring.