Red Sea weather for divers: Sharm & Hurghada monthly guide
- red-sea
- diving
- egypt
The Red Sea is one of the few world-class dive destinations that genuinely works all twelve months — but 'diveable year-round' does not mean 'identical year-round'. Red Sea weather for divers swings from 22 °C winter water that demands a thick wetsuit to bath-warm 29 °C summer seas, with wind seasons that decide whether your boat crossing to the offshore reefs is a cruise or a washing machine. Here is the honest monthly picture for Sharm el-Sheikh and Hurghada.
The two coasts are not twins
Sharm el-Sheikh sits at the tip of Sinai, sheltered by mountains, with quick access to the Strait of Tiran and Ras Mohammed. Hurghada faces the open Red Sea on the African shore and is famously windier — a gift for the kitesurfers of nearby El Gouna, a factor for divers heading to exposed sites. Air temperatures track each other closely: 20–24 °C winter days, 33–38 °C in high summer, with Hurghada's wind making identical numbers feel cooler on deck.
The diving year, month by month
| Period | Water temp | Conditions for divers |
|---|---|---|
| Dec–Feb | 22–24 °C | Coolest water, 7 mm suit or drysuit for repeat dives; fewest crowds |
| Mar–May | 23–26 °C | Warming fast; spring winds can blow up chop on crossings |
| Jun–Aug | 27–29 °C | Warmest water, 3 mm shorty territory; hot 38 °C+ surface days |
| Sep–Nov | 26–28 °C | The sweet spot: warm sea, easing winds, pleasant 28–32 °C air |
Visibility stays impressive year-round — commonly 20–30 metres — with occasional spring plankton blooms trading a little clarity for a lot of marine action. Rain is essentially a non-factor — the Red Sea coast counts its wet days per year on one hand — so the variables that actually matter are wind, swell and water temperature, in that order. Air-water gaps also shape comfort: a 24 °C winter water temperature feels colder when the deck breeze is 20 °C than the same water under a 35 °C summer sky.
What each season means underwater
Winter (December–February)
Cool water thins the crowds and concentrates the big-animal luck: this is prime season for oceanic whitetip encounters around Elphinstone and the Brothers further south. Surface intervals can feel genuinely chilly in a 25 km/h breeze at 21 °C — pack a windproof jacket and a beanie, words rarely associated with Egypt.
Summer (June–August)
The water peaks near 29 °C and marathon dive days become effortless. Topside is another story: Hurghada and Sharm bake at 36–40 °C, so the liveaboard routine of dive-eat-shade-repeat beats shore-based schlepping in the heat. July brings whale shark and manta chances in the north.
Autumn (September–November)
Ask Red Sea dive guides for their favourite month and most will say October: 27 °C water, settled seas, thinning summer crowds and reef life in full swing. If you are planning a first Red Sea trip, this is the default answer.
Wind: the real trip-planner
- The prevailing wind is northerly year-round, strongest in spring and early summer afternoons.
- Exposed crossings (Tiran, Brothers, offshore Hurghada sites) are roughest March–May; northern sheltered sites remain diveable.
- Autumn brings the calmest, most reliable sea states for long liveaboard routes.
- Prone to seasickness? Book autumn, choose bigger boats, and favour Sharm's sheltered Sinai sites.
The marine life calendar
Season choice also decides what swims past you. Summer's warm water peaks coincide with whale shark sightings in the northern Red Sea and manta activity around the offshore reefs. Winter's cooler, plankton-rich water is when the pelagics patrol: hammerhead schools off Daedalus, oceanic whitetips at Elphinstone and the Brothers between October and January. Spring brings the reef itself to life — many species spawn as the water warms through April and May — while dolphins, turtles and the famous Ras Mohammed snapper aggregations of July are reliable enough to plan a trip around. Night dives are excellent year-round, though winter divers should budget for the extra chill of a second dusk immersion in 23 °C water.
Packing by season
Winter: 7 mm wetsuit, hood, windproof deck layer. Spring/autumn: 5 mm covers most divers. Summer: 3 mm or a shorty, plus serious sun protection — the Egyptian summer sun at sea is unforgiving, and reef-safe sunscreen keeps the corals you came for healthy.
Before you fly, check surface conditions and wind for the Egyptian coast on our Cairo weather page and the broader Egypt forecast hub — then let the wind calendar, not the brochure, pick your dive sites — the reef will be spectacular whichever month you choose; the crossing to reach it is what the season decides.