Summer in Beirut, Lebanon feels like a mix of heat, humidity, and long sunny days that really shape daily life along the coast. You’ll usually see average daytime highs around 28–31°C (82–88°F), with warm nights that barely dip below 22–25°C (72–77°F).
These steady temperatures make the season perfect for enjoying the Mediterranean lifestyle. You might find yourself walking the Corniche or just relaxing at the beach.
Humidity turns up the intensity, especially in July and August, when the air feels heavy and sticky. Rain? It’s pretty much absent during these months, so you get mostly clear skies and bright sunshine.
This dry spell brings consistent weather patterns that are easy to plan around. You don’t have to wonder if your plans will get rained out.
The Mediterranean Sea shapes summer conditions in a big way. Water temperatures stay warm and inviting, often hovering near 27–28°C (80–82°F).
That warmth makes coastal activities a huge part of summer. With reliable daylight hours and barely any storms, summer in Beirut feels both predictable and full of chances to enjoy the outdoors.
Average Summer Temperatures in Beirut
Beirut’s summer climate comes from its spot on the eastern Mediterranean coast. Temperatures rise steadily from June through August.
You get warm days and mild nights that make the season hot and humid.
Monthly Average Highs
During summer, daily average highs go from about 26°C (79°F) in June to around 30°C (86°F) in August. July usually lands in between, averaging close to 28–29°C (82–84°F).
The hottest stretch often falls in early to mid-August. Daytime highs frequently reach 30°C (86°F) and sometimes go a bit higher.
You’ll see very few cloudy days, so direct sun exposure is strong. If you plan to be outside, this is when shade and hydration really matter.
| Month | Avg. High °C | Avg. High °F |
|---|---|---|
| June | 26 | 79 |
| July | 28–29 | 82–84 |
| August | 30 | 86 |
Monthly Average Lows
Nighttime average lows climb as summer goes on. In June, lows hover around 20°C (68°F).
By July, they rise to about 23°C (73°F). In August, the average low is close to 25°C (77°F).
You rarely get a cool evening. Even after sunset, the air often feels muggy because of high humidity.
Most homes and hotels use air conditioning. If you’re outside at night, expect the air to stay warm and sticky.
| Month | Avg. Low °C | Avg. Low °F |
|---|---|---|
| June | 20 | 68 |
| July | 23 | 73 |
| August | 25 | 77 |
Temperature Extremes and Records
The average highs and lows paint a picture of Beirut’s summer, but you should also know about the extremes. The hottest days usually hit in early August, sometimes reaching 32°C (90°F), though that’s not the standard.
Summer almost never brings cool spells. Nighttime temperatures hardly ever drop below 18°C (64°F), even in early June.
The city’s coastal location helps keep extremes in check compared to inland Lebanon. The Mediterranean Sea keeps temperatures from soaring much above 32°C (90°F), but it also stops nights from cooling much below 20°C (68°F).
So, you get a pretty consistent run of hot days and warm nights all season.
Humidity and Comfort Levels
Summer in Beirut means warm air mixed with high moisture. That combo can make being outside feel a bit sticky.
Daytime humidity often climbs, making the heat feel even stronger. Nights stay damp and slow to cool because of the city’s coastal setting.
Typical Daytime Humidity
Daytime humidity in Beirut during summer usually sits between 65% and 75%, with July and August hitting the highest marks. The Mediterranean’s sea breeze brings in extra moisture, so even clear skies can feel muggy.
High humidity makes the temperature feel hotter than what the thermometer says. An air temperature of 86°F (30°C) can feel more like 95°F (35°C) when humidity tops 70%. That’s the heat index at work.
You’ll probably notice the air feels heavy, especially around midday in July when almost every day is labeled as muggy or worse. Walking or sightseeing outside can get tiring fast, especially in direct sun.
Most people look for shade, air-conditioned spaces, or coastal spots with breezes. Carrying water and planning breaks during the hottest hours can help you stay comfortable.
Nighttime Humidity Patterns
Humidity doesn’t drop much after sunset because the sea keeps releasing moisture. Typical nighttime levels stay around 70–80% in mid-summer.
Unlike inland cities, Beirut almost never sees sharp drops in humidity after dark. Nights stay warm and sticky, with average lows near 76–78°F (24–26°C) in July and August.
Sleeping without air conditioning can feel rough. The air stays damp, so laundry and fabrics dry slower, and you might see windows fog up in the early morning.
These patterns show off Beirut’s Mediterranean climate, where heat and moisture linger well past sunset. Sometimes, sea breezes pick up late at night, offering a little relief, but don’t expect them to chase away the muggy feeling completely.
Rainfall and Precipitation Patterns
Summer in Beirut brings hot, dry weather with barely any rain. Precipitation drops sharply compared to winter, and rainy days are almost nonexistent.
Summer Rainfall Amounts
Rainfall during summer in Beirut is minimal. From June through August, totals rarely go above 2–3 mm per month.
July is usually the driest, averaging about 1.5 mm of rain. This is a huge drop compared to winter, when monthly averages can go over 140 mm.
The Mediterranean climate creates a clear dry season in summer, so most days are rain-free. You won’t need to plan around wet weather.
Outdoor activities, beach visits, and walking tours almost never get interrupted by rain during this stretch.
| Month | Average Rainfall (mm) |
|---|---|
| June | ~3 mm |
| July | ~1.5 mm |
| August | ~2 mm |
That’s about as close to zero as it gets for summer rain in Beirut.
Rainy Days Frequency
Rainy days in Beirut during summer are extremely rare. July often has 0 days with measurable rain.
June and August might see 1 day at most, but many years pass with no summer rainfall at all. Summer is the most predictable season for dry weather.
Unlike winter, when you might see 10–14 rainy days per month, summer stays consistently clear. So, pack for dry heat—not mixed weather.
Umbrellas and rain gear just aren’t needed. Light clothing and sun protection make way more sense.
With so few rainy days, you get more sunshine hours, making Beirut’s summer perfect for outdoor adventures without weather worries.
Sunshine Hours and Daylight
Beirut summers bring long daylight hours and loads of sunshine—more than a lot of other Mediterranean cities. The amount of sun and the timing of sunrise and sunset can really shape your plans, whether you’re sightseeing or grabbing a late dinner outside.
Average Daily Sunshine
During summer, Beirut racks up some of its highest sunshine hours. In July, expect about 12 hours of direct sun per day, adding up to roughly 361 total hours for the month.
June and August are nearly as bright, with daily averages close to 11–12 hours. By comparison, winter months drop to about 4–5 hours per day.
That big difference makes summer especially tempting for beach trips and outdoor events. The yearly total hits about 2,964 hours of sunshine, putting Beirut among the sunniest cities in the region.
Just for context:
- Lisbon, Portugal: ~2,801 hours
- Chicago, USA: ~2,520 hours
- Brisbane, Australia: ~2,999 hours
So, Beirut’s summer weather gives you reliably bright days, making it easy to enjoy long stretches outside without much cloud cover.
Sunrise and Sunset Times
Daylight in Beirut shifts with the season. In June and July, the sun rises around 5:30 AM and sets close to 8:00 PM, so you get about 14.5 hours of daylight.
By late August, sunrise moves later, closer to 6:00 AM, and sunset comes earlier, about 7:15 PM. Even then, you still get over 13 hours of daylight.
Winter daylight drops below 10 hours, but in summer, you get long evenings perfect for dinner outdoors, strolling the Corniche, or exploring the city after dark.
Early sunrises and late sunsets make summer days in Beirut feel full and flexible, giving you extra time to enjoy the city without feeling rushed.
Sea Temperatures and Coastal Conditions
The Mediterranean waters off Beirut’s coast reach their warmest during the summer months. Calm seas, long daylight, and almost no rain create reliable conditions for swimming and beach fun.
Average Summer Sea Temperatures
From June through August, sea temperatures in Beirut range from 27°C (81°F) to 29°C (84°F). June starts with water around 24–27°C, while July and August bring peak warmth, often near 28–29°C.
These steady temperatures make the sea comfortable for long swims. Even in the evening, the water holds onto its warmth.
Unlike winter, when the sea cools to about 17–18°C, summer brings consistently warm water with no sudden drops.
Humidity along the coast can make things feel even warmer, but the sea itself balances it out. With low summer rainfall and gentle winds, the coastal waters stay calm and predictable most of the season.
| Month | Avg Sea Temp °C | Avg Sea Temp °F |
|---|---|---|
| June | 24–27 | 75–81 |
| July | 27–28 | 81–82 |
| August | 28–29 | 82–84 |
Swimming and Beach Weather
Expect long beach days in Beirut during summer, with 10–12 hours of sunshine daily. The sea’s warmth matches air temperatures often between 28°C and 31°C, making it perfect for swimming, snorkeling, or just hanging out by the water.
Beaches get busiest in July and August as locals and visitors enjoy the long daylight. Early mornings and late afternoons are favorite times to swim, since the sun is less intense but the water stays warm.
Rainfall is almost nonexistent during this time, with many days showing 0 mm of precipitation. Calm seas and gentle breezes keep coastal conditions safe for most swimmers, though you should still watch out for the occasional current near open shorelines.
Light footwear for hot sand and plenty of sunblock go a long way for comfort. With steady sea warmth and predictable weather, Beirut’s summer offers some of the most reliable beach days in the eastern Mediterranean.
Notable Summer Weather Phenomena
Summer in Beirut means high temperatures, dry conditions, and a few local weather quirks that might affect your plans. Heat waves and desert winds sometimes push temperatures above the usual, while the city’s dense urban layout creates its own microclimate that can impact comfort.
Heat Waves and Khamsin Winds
During summer, you might run into heat waves that send daytime highs well above the average 30°C (86°F). These spells can last several days and often boost both temperature and humidity, making afternoons feel even hotter.
Sometimes, Khamsin winds—hot, dry gusts from desert regions—reach Beirut. They’re more common in spring, but can show up in early summer too.
Khamsin winds carry dust, cut visibility, and raise temperatures quickly, sometimes by several degrees in just a few hours.
These conditions can make being outside uncomfortable, especially midday. If you’re sensitive to heat, plan your outings for the morning or evening.
Staying hydrated and finding shade helps you deal with these short but intense weather bursts.
Urban Microclimate Effects
Beirut’s dense construction and lack of green space create an urban heat island effect. So, the city usually feels warmer than nearby coastal or rural areas, especially at night when concrete and asphalt push out all that stored heat.
Humidity from the Mediterranean Sea brings another level of discomfort. Even after sunset, the mix of leftover warmth and moisture in the air can keep things feeling muggy.
You’ll probably notice cooler areas along the waterfront. Sea breezes there actually offer a bit of relief.
But inland neighborhoods with lots of traffic and not much airflow tend to hold onto the heat. If you stick to shaded streets, parks, or just wander along the seaside promenades, you might find it a little more bearable during those scorching summer days.