If you’re planning a summer trip to Djerba, get ready for long, sunny days and warm evenings. The island’s desert climate mixes with Mediterranean breezes, so you’ll usually see daytime highs between 30 °C and 34 °C. Sometimes, heat waves push temps past 40 °C—yikes!
Nights stay mild, which makes it easy to enjoy outdoor dinners or strolls along the coast. You won’t see much rain in summer, so expect dry conditions and plenty of blue sky.
The sea warms up to around 26–28 °C by July and August, so swimming and beach time are pretty much guaranteed. Sunshine rules here, giving you some of the brightest, longest days of the year.
Wondering when the heat feels best, how sunny it gets, or if the sea’s warm enough for long swims? You’ll find those details below. Let’s get into what kind of summer weather you can really expect in Djerba, Tunisia.
Overview of Djerba’s Summer Climate
Djerba’s summer climate blends hot desert air with cooling sea breezes. You’ll notice a mix of dry heat and coastal humidity. Expect long, sunny days, almost no rain, and sea temps that make swimming comfortable all season.
Mediterranean and Semi-Arid Influences
Djerba sits off Tunisia’s southern coast, close to the Sahara. That location gives the island a semi-arid, desert-influenced climate, but the Mediterranean Sea takes the edge off the extremes.
Summer highs often hit 33–35 °C (91–95 °F), but the sea breeze can make things feel less intense. Sometimes, hot desert winds blow in and push temps above 40 °C (104 °F). Those winds bring dry air and, occasionally, a bit of sand or dust.
Rain barely shows up in summer. July usually ends up with 0 mm of rain, while June and August average just 1 mm. This dryness means clear skies and 10 to 12 hours of sunshine per day.
Humidity changes a bit. On calm days, the coast feels more humid, but desert winds dry things out inland. This combo is what makes Djerba’s climate stand out from the rest of Tunisia.
Typical Weather Patterns in Summer
From June through September, both air and sea temps rise steadily. In June, daytime highs average about 30 °C (86 °F), and the sea sits near 23 °C. By August, highs reach 34 °C (93 °F), and the sea warms up to 28–29 °C—perfect for swimming.
Nights stay warm, usually between 21–25 °C (70–77 °F). That means evenings are great for being outside. June gives you over 14 hours of daylight, so there’s plenty of time to hit the beach.
Sometimes, southern winds cause heat waves. When that happens, temps can climb to 45 °C (113 °F). It doesn’t happen often, but when it does, you’ll want to find shade and drink lots of water.
Comparing Djerba’s Climate to Other Tunisian Destinations
If you compare Djerba to northern cities like Tunis or Bizerte, you’ll spot some differences. Up north, summers bring more rain and slightly cooler temps, with highs around 30–32 °C (86–90 °F).
Inland cities such as Tozeur or Kairouan get much hotter. Highs there often break 40 °C (104 °F) more frequently, and without a sea breeze, the heat feels way tougher.
Djerba has that balance between desert heat and coastal moderation. You get a long stretch of sunny, dry days, but the sea keeps things more bearable than inland Tunisia. Honestly, it’s one of the most reliably pleasant summer spots in the country.
Average Summer Temperatures in Djerba
Summer in Djerba means hot days, warm nights, and barely any rain. You’ll see lots of sunshine, high sea temperatures, and a noticeable difference between day and night.
Daytime and Nighttime Temperature Ranges
During summer, daytime highs usually land in the upper 20s °C to low 30s °C (about 83–90 °F). The hottest stretch is late July and early August, when temps can hit 30 °C (86 °F) or higher.
At night, it cools off a bit. Lows range from 23 °C to 25 °C (73–77 °F). Evenings stay warm but feel a lot better than the midday sun.
Humidity stays moderate, so the heat doesn’t get as sticky as in tropical places. Clear skies and Mediterranean breezes help balance things out, especially at night.
Monthly Temperature Breakdown: June, July, August
Here’s how summer builds up in Djerba:
| Month | Avg High | Avg Low | Sea Temp |
|---|---|---|---|
| June | ~26 °C (79 °F) | ~23 °C (73 °F) | 22 °C (72 °F) |
| July | ~29 °C (84 °F) | ~24 °C (75 °F) | 26 °C (79 °F) |
| August | ~30 °C (86 °F) | ~25 °C (77 °F) | 28 °C (82 °F) |
June brings warm but manageable weather, so sightseeing is easier. By July, you’ll really feel the heat and the long sunshine hours. August is usually the hottest, but the sea is at its best for swimming.
The temperature difference between months isn’t huge, but you’ll notice a steady climb in both land and sea temps as summer rolls on.
Record Highs and Lows
Most of the time, temps stay steady, but sometimes things get extreme. On rare days, highs can top 35 °C (95 °F)—usually during heatwaves when hot inland winds show up.
Summer nights almost never drop below 21 °C (70 °F). Don’t expect cool evenings, not even in June.
Winter lows can hit 13 °C (55 °F), so summer nights feel much warmer in comparison. July and August almost never see rain, which keeps the warm weather locked in.
These extremes don’t happen often, but they show how steady Djerba’s summer climate usually is.
Precipitation and Humidity During Summer
Hot, dry weather takes over Djerba in summer. Humidity stays moderate, and coastal winds help make the heat more bearable. These conditions create a climate that’s generally comfortable for outdoor fun, especially near the sea.
Rainfall Amounts and Frequency
Summer rain in Djerba is basically a no-show. From June to August, rainfall usually totals just 1–2 mm per month—about as low as it gets all year. Most days are bone dry, and sometimes weeks go by with zero rain.
You’ll see less than two rainy days per month in summer. When it does rain, it’s usually brief and light, so it rarely messes up your plans. The semi-arid climate keeps heavy downpours away this time of year.
Honestly, summer is the safest bet for beach trips and outdoor adventures. Unlike autumn, when rain picks up, summer weather stays steady and dry.
Humidity Levels and Comfort
Humidity in Djerba during summer usually falls between 58% and 65%. That’s moderate—not bone dry, but far from the heavy stickiness you get in tropical spots.
It can feel a bit more humid during the hottest hours, but sunshine and breezes stop it from getting too much. At night, humidity drops a little, which helps make evenings nicer.
Travelers can count on warm weather without that suffocating dampness. The blend of heat and moderate humidity makes Djerba great for swimming, sunbathing, and all kinds of summer activities.
Typical Wind Conditions
Winds shape Djerba’s summer weather in a big way. The island gets Mediterranean sea breezes that usually blow at about 20–25 km/h. These breezes take the edge off the heat and keep the air feeling fresh.
In July and August, when it’s hottest, the breeze matters most. It also helps keep humidity from building up near the coast.
For visitors, these winds make outdoor time more enjoyable, especially if you’re into water sports or just hanging at the beach. Sometimes gusts pick up, but they rarely get wild—mostly, they just cool things down.
Sunshine Hours and UV Index
Summer days in Djerba are long, bright, and come with high UV exposure. These conditions shape how you plan your days, from sightseeing to beach time, so sun protection is a must.
Average Daily Sunshine
Djerba racks up some of its highest sunshine totals in summer. July brings about 12.5 hours of sunshine each day, or 376 hours for the month. June and August aren’t far behind, both averaging over 11 hours daily.
Clear skies rule, so your days are almost always bright. With rain so rare, you can count on the sun most afternoons.
Compared to other Mediterranean spots, Djerba stands out. For example, Lisbon gets about 9–10 hours of sunshine in July—Djerba easily beats that. It’s one of the sunniest summer places around.
UV Index Levels and Sun Protection
The UV index in Djerba during summer often hits 9–10. That’s very high to extreme. Even short trips outside without protection can lead to skin damage.
You’ll want to use broad-spectrum sunscreen (SPF 30 or higher), reapply every couple hours, and wear UV-protective sunglasses. A wide-brimmed hat and light clothing help too.
Try to avoid being outside between 11 a.m. and 3 p.m., when the sun is strongest. At the beach, sand and water reflect sunlight, so exposure goes up.
Daylight Duration
Daylight lasts late into the evening during summer in Djerba. June brings the longest days—about 14.5 hours. July and August average just over 14 hours.
You get plenty of time for sightseeing, outdoor dinners, or water sports. Unlike northern Europe, where daylight hours can swing a lot, Djerba’s summer days stay reliably long.
By late August, the days get a little shorter, but you’ll still see around 13 hours of daylight. That’s more than enough for a packed day of activities. Long, sunny days make Djerba’s summer weather perfect for travel plans that keep you outside.
Sea Temperatures and Beach Weather
The sea around Djerba heats up quickly once summer starts and stays warm all season. Calm water, long sunny days, and barely any rain make it a solid pick for beach holidays.
Average Sea Water Temperatures
Sea temps in Djerba rise steadily from early to late summer. In June, the water averages about 24–25 °C (75–77 °F)—refreshing but still warm enough for a swim. By July, it climbs to around 28 °C (82 °F), and in August, it peaks near 29 °C (84–85 °F).
That steady rise means you’ll get very warm water by mid to late summer. The sea almost matches the air temp, which sits around 30–31 °C during the day.
The Mediterranean holds onto heat, so the water stays warm even after dark. Evening swims are comfortable, especially when the air stays above 26 °C after sunset.
Swimming and Water Activities
The warm sea in Djerba opens up a whole world of things to do. You can swim for ages without feeling cold, even if you venture out where it’s deep.
From June to August, the water gets warmer, making it even better as summer rolls on.
Snorkeling here is a treat. The dry summer weather keeps the water clear, so you can see a lot.
Since the sea stays calm and rain is rare, you won’t have to worry about murky water from runoff.
If you like sailing, paddleboarding, or jet skiing, summer is definitely your season. The wind usually stays light or moderate, and storms almost never show up.
That means the sea feels safe, whether you’re just starting out or you’ve been doing these activities for years.
Beach Conditions in Summer
Djerba’s beaches stretch wide, covered in soft sand. They’re perfect for long, lazy days right by the water.
With 29–31 sunny days each summer month, you can almost forget about rain. Most months see less than 3 mm of precipitation, so showers aren’t really a problem.
Daylight sticks around for 13 to 14 hours a day, giving you loads of time to soak up the coast.
The mix of warm air, hot sand, and calm seas makes the weather feel reliable and easy to predict.
Shade is a bit scarce, so you might want to bring your own umbrella or grab a spot under the shade offered by resorts.
The midday sun can get pretty intense, but those sea breezes along the shore make things much more pleasant.
Best Time to Visit Djerba for Summer Holidays
Djerba in summer really delivers—long, sunny days, warm sea water, and barely any rain. When you go does matter, though. The weather can swing from just right to almost too hot, which could change how much time you want to spend outside or at the beach.
Ideal Months for Travel
The best time to visit Djerba for a summer holiday runs from June to September. In these months, daytime highs usually hit 25°C (77°F) in June and climb to about 30°C (86°F) in July and August. September cools off a bit, averaging 28°C (82°F).
July and August almost never see rain—maybe 2 mm at most. You’ll get 12–12.5 hours of sunshine per day, which is pretty great for being outdoors.
The sea feels amazing, too. Water temperatures rise from 26°C (79°F) in July to 28°C (82°F) in August, so swimming is always inviting.
If you want milder weather and fewer people, late May and early October work well. You’ll still get warm days, but evenings feel more comfortable and humidity drops.
Tips for Avoiding Extreme Heat
July and August can get seriously hot. If you’re not used to dry Mediterranean summers, the midday heat might surprise you.
Try to hit the beach or do your sightseeing early or later in the day.
Drink plenty of water and stick to lightweight, breathable clothes. Most hotels and resorts provide shaded areas and pools, so you can avoid the strongest sun when you need a break.
If you know you’re sensitive to heat, think about coming in June or September. You’ll still enjoy great beach weather, but with cooler air and less chance of getting overheated.
Planning Your Beach Holiday
If you’re dreaming of a beach holiday, you’ll get the best weather between July and September. The seas stay calm, the water’s warm, and the days just seem to stretch on forever. It’s honestly the perfect setup for swimming, sailing, or just about any water sport you like.
People flock to popular beaches like Sidi Mahres and Seguia for their wide, sandy shores and those clear, shallow waters. Resorts usually set out loungers and umbrellas, plus they offer water activities, especially when the season’s in full swing.
Looking for a quieter vibe? Try visiting in June or early October. The sea stays warm, but you’ll dodge the crowds and have way more room to unwind. That kind of timing makes it so much easier to mix in some beach time with a few cultural adventures around the island.