Conditions in May
May is undeniably one of the sweet spots for diving in the Egyptian Red Sea. You're catching the tail end of the cooler season, before the intense summer heat fully kicks in, but with rapidly improving water temperatures. Think comfortable, not scorching. Air temperatures typically range from a pleasant 28°C to 35°C (82°F to 95°F), meaning you'll be warm topside between dives without feeling overwhelmed. The sea state during May is generally very calm, especially in the northern Red Sea, which is fantastic for smooth surface intervals and easy entries/exits. While the southern routes might experience a bit more chop, it's usually manageable thanks to less intense winds compared to later in the summer. This calm makes getting to those further-flung offshore reefs like the Brothers or Daedalus a much more comfortable journey.
Water temperatures in May are wonderfully inviting. You can expect a comfortable 25°C to 27°C (77°F to 81°F) throughout most of the Red Sea during the day. This really opens up your wetsuit options – many divers find a 3mm full suit or even a shorty perfectly adequate, providing warmth for multiple daily dives without being restrictive. Visibility remains consistently excellent, one of the Red Sea's enduring charms. You’re looking at an impressive 20 to 40 meters (65 to 130 feet) on most dives, sometimes even more. The clarity of the water at this time of year allows for spectacular views of the vibrant reefs and any pelagic action that swings by.
Currents can be a mixed bag, as is often the case in the Red Sea, but May typically sees moderate conditions. Around the offshore reefs like Elphinstone, Daedalus, and the Brothers, you'll encounter currents that range from mild to strong, which is precisely what attracts the big stuff. These currents are vital for delivering nutrients to the coral reefs and bringing in the pelagic visitors that make these sites so famous. Your dive guides are experts at reading these conditions, ensuring you get the best drift dives and exhilarating encounters without unnecessary risks. For those seeking fewer currents, the sheltered bays and pinnacles of areas like Hurghada or Sharm El Sheikh still offer plenty of stunning diving.
What you will see
May in the Red Sea is a fantastic time for pelagic encounters, making it an ideal month for those seeking thrilling interactions with larger marine life. While whale shark sightings are never guaranteed, May is considered a prime month for these gentle giants to cruise through the Red Sea. Your best chances for seeing them are often around the offshore reefs or even some of the deeper sites near the main coastline. Beyond these impressive filter-feeders, you can expect regular sightings of oceanic whitetip sharks and hammerheads, especially at world-renowned locations further offshore. The currents at these sites act as a magnet, bringing in these apex predators.
Aside from the big pelagics, May offers a rich tapestry of marine biodiversity. Reef sharks, including grey reefs and silvertips, are commonly seen patrolling the drop-offs and reef walls. Eagle rays gracefully glide through the blue, while large schooling barracudas and tuna create impressive swarms. For manta rays, while not as consistently present as in some other global hotspots, opportunities do arise, particularly around nutrient-rich sites where they come to feed. Keep your eyes peeled on the blue, as you never know what might appear from the depths.
And let's not forget the incredible reef life that the Red Sea is famous for. The vibrant, healthy hard and soft corals are simply stunning, teeming with a kaleidoscope of reef fish. Expect to see colourful parrotfish, angelfish, butterflyfish, and clownfish among the anemones. Macro enthusiasts won't be disappointed either; look closely for nudibranchs, stonefish, scorpionfish, and various crabs and shrimps hiding within the coral crevices. May’s clear waters and comfortable temperatures mean you can take your time to explore both the grand scale and the intricate details of these magnificent underwater ecosystems.
Top dive sites this month
For an unforgettable dive experience in May, you absolutely have to aim for the offshore wonders of the Southern Red Sea. First on your list should be The Brothers (Big Brother and Little Brother). These two isolated pinnacles offer some of the most dramatic diving in the Red Sea, and in May, they are shark magnets. Expect to encounter oceanic whitetips, hammerheads, thresher sharks, and even grey reef sharks patrolling the walls. The Brothers are also home to two incredible wrecks, the Numidia and the Aida, both encrusted with corals and teeming with marine life, adding another layer of adventure to your dives.
Following closely behind is Daedalus Reef. Situated even further offshore than the Brothers, Daedalus is a colossal circular reef with a lighthouse in its centre. The sheer walls plunge into the abyss, attracting schooling hammerheads in particular during May. Currents can be strong here, making for exhilarating drift dives along its pristine coral formations. You'll also see plenty of reef sharks, tuna, and barracuda. Finally, Elphinstone Reef is a must-visit for its dramatic drop-offs and the strong possibility of encountering oceanic whitetips, especially around its northern and southern plateaus. May provides excellent conditions to explore this iconic reef, renowned for its incredible soft corals and thrilling pelagic action.
Practical tips for your trip
Given the lovely water temperatures in May (25°C to 27°C / 77°F to 81°F), a 3mm full wetsuit will be perfectly comfortable for most divers doing multiple dives a day. If you tend to get cold easily or plan on doing very long dives, a 5mm might be considered, but for the average diver, a 3mm or even a high-quality 2mm will suffice. This month is versatile, suiting a wide range of divers. Beginners will appreciate the generally calm surface conditions and good visibility at shallower sites, while experienced divers will thrive on the exciting currents and pelagic action offered by the offshore reefs.
Liveaboard availability in May is generally good, but as it’s a popular time, especially for routes to the Brothers, Daedalus, and Elphinstone, booking in advance is highly recommended. These itineraries often sell out. When packing, think light and breezy for topside – shorts, t-shirts, and some sun protection will be your best friends. Don't forget reef-safe sunscreen, a wide-brimmed hat, and sunglasses. A light jacket or hoodie might be welcome for cooler evenings at sea, but generally, it’s just the perfect warmth. Remember to bring any personal medications you might need and a good underwater camera, because the visibility and marine life in May will give you endless photo opportunities. Be aware that some remote dive sites can have strong currents, so ensuring you're comfortable with drift diving and maintaining good buoyancy is key to making the most of your Red Sea adventure.