Best Time to Dive in Kaş: Season & Water Temperature by Month
When is diving season in Kaş? Approximate water temperature by month, wetsuit advice and visibility. Pick the best window for your try-dive or course.
- The main season runs roughly April to November
- Warmest water: July-September (≈ 25-29°C), ideal for first dives
- Visibility is good year-round, exceeding 20 metres on most days
- Winter diving continues in good weather (≈ 16-18°C, thick wetsuit)
- October is a favourite of experienced divers: warm water, quiet sites
The short answer: when should you come?
If you're in a hurry: the diving season in Kaş runs roughly April to November, and the water is warmest from July to September. For first-time divers, summer is the most comfortable window; for certified divers who want warm water without the crowds, September-October may be the most enjoyable stretch of the year. Even in winter, diving continues on good-weather days.
But "the best time" also depends on who you are. Below you'll find month-by-month conditions and which window suits which diver. For how diving in Kaş works overall, see our complete Kaş diving guide.
Water temperature and wetsuit advice by month
| Month | Water temp* | Wetsuit | Note |
|---|---|---|---|
| April | ≈ 17-18°C | 7 mm | Season opens; quiet sites |
| May | ≈ 19-21°C | 5-7 mm | Sea warming; a good course window |
| June | ≈ 22-24°C | 3-5 mm | Summer begins; everything is comfortable |
| July | ≈ 25-27°C | 3 mm / shorty | Peak season; book a little ahead |
| August | ≈ 27-29°C | 3 mm / shorty | Warmest water; ideal for try-dives |
| September | ≈ 26-28°C | 3 mm | Warm water, thinning crowds |
| October | ≈ 23-25°C | 3-5 mm | A local favourite: calm and still warm |
| November | ≈ 20-22°C | 5 mm | Season winds down; fine days continue |
| December – March | ≈ 16-18°C | 7 mm / drysuit | Diving continues in good weather; empty sites |
* Figures are approximate seasonal averages and vary by year and day. Wetsuit advice depends on your personal cold tolerance; we carry different thicknesses on the boat.
For today's live sea temperature and monthly surface averages built on five years of real data, see our Kaş sea temperature page.
Kaş, season by season
Spring (April-May): the quiet opening
The sea is still cool but the town and the dive sites are calm. A lovely period if you don't mind a thicker wetsuit, and course students get extra scheduling flexibility with their instructor.
Summer (June-August): the peak
Water climbs above 25°C, a thin suit is enough and the days are long: the most comfortable window for a discovery dive. One note: in July-August weeks, message a few days ahead to secure boat space.
Autumn (September-November): the diver's season
The sea holds its summer warmth for a long time while the crowds thin out. September and October are the months many experienced divers call the best of the year, ideal for day trips and multi-dive packages.
Winter (December-March): the connoisseur's season
The water is cool but diving doesn't stop: on suitable days you dive in a thick suit at nearly empty sites. Trips are planned around the weather, so send us your dates and we'll look together.
Why is visibility so good?
The Kaş coastline has little river inflow and the bottom drops away quickly from shore, which keeps the water clear all year: over 20 metres of visibility on most days, and much more on the good ones. That clarity is a big part of why sites like the wrecks, the Canyon and the Blue Cave are so photogenic.
Marine life shifts with the seasons too: loggerhead turtles are seen more often in summer, while grouper, moray and octopus are year-round residents of the reefs. Nature makes no promises, but Kaş is generous.
Which month suits whom?
- First-time divers: June-October. Warm water makes the first experience comfortable; see the first-dive guide.
- Course students: May-October. Stable seas for a 3-4 day program; there's a sample holiday plan in the certification guide.
- Certified divers: the September-October balance is hard to beat; summer means long days and the warmest water. Trip and package programs are on the prices page; exact price on WhatsApp within minutes.
- Crowd-avoiders: April-May or November, and of course winter.
