Marmaris weather in September
September in Marmaris: sweltering, dry — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#1 of 12 months in Marmaris · #6 of 1413 destinations to visit in September · comfort 96/100 (tier S)
- Days
- 33°C
- Nights
- 22°C
- Wet days
- 3
- Sun
- 11.5 h
- Humidity
- 61%
- Daylight
- 12 h
Traveller notes on Marmaris in September
Forum posters describe early September as still genuinely hot - mid-to-high 30sC - cooling gradually to the low 30sC by month's end, with sea and pool water staying nicely warm after a full summer of sun. By around the third week, posters note nights start cooling enough that air conditioning becomes unnecessary, and a cardigan may be useful for the very end of the month. Weather is described as largely excellent but genuinely 'hit or miss' at times, with occasional torrential storms (thunder and lightning) reported, though these clear within hours rather than settling in. The overall consensus: September ranks among the best months to visit, with comfortable day and night temperatures plus better bargains once school-age tourists have gone home.
Other months in Marmaris
Marmaris forum posters describe March as a genuine coin-flip month: warm and sunny stretches alternate with days of proper rain, and one traveler mentioned being confined to their hotel for a stretch of torrential downpours before the sun came back out. Evenings turn chilly regardless of how the day went, so a layer is worth carrying even on a nice afternoon. Most restaurants and bars away from the immediate beachfront stay open through the off-season, so there's no shortage of places to wait out a rainy spell - just don't expect beach weather to hold for a whole week straight.
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Marmaris climate normals — September
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Marmaris in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsFerries and cruise calls, Swimming season, Summer holidays in Turkey(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Marmaris's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherMarmaris's best weather comes in June, July and September — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Marmaris in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Blue cruise season
1 May – 15 Oct · usuallySummer season opensBook earlyThe gulet fleet comes out of winter lay-up in the bay and the week-long runs down towards Fethiye start going. The day boats out of the marina you can walk on to; the overnight ones you cannot.
- Season
Ferries and cruise calls
1 May – 15 Oct · usuallyDay-tripper crushCrowdedThe Rhodes catamaran and the cruise ships put a few thousand people into the castle quarter between mid-morning and late afternoon. The old streets are pleasant either side of that.
- Season
Swimming season
1 Jun – 31 Oct · usuallySea warm enoughCrowdedThe enclosed bay warms early and holds it late, which is why the season here runs longer than the flights do. October is the quiet reward for putting up with August.
Nearby, and something's on
Within 300 km of Marmaris — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Marmaris?
Marmaris in September — FAQ
- Is September a good time to visit Marmaris?
- September in Marmaris: sweltering, dry — one of the best months to visit. It ranks #1 of 12 months for Marmaris on SeasonMap's comfort score (96/100).
- What is the weather like in Marmaris in September?
- In September, Marmaris averages a daily high of 32.5°C and a low of 21.8°C, with about 11.4 mm of rain over roughly 2.7 rainy days.
- What is the air quality in Marmaris in September?
- Marmaris has a mean US Air Quality Index of about 52 in September.
Within 300 km: Rhodes' Moths at Petaloudes around 15 Jun – 15 Sep, and Kaş's Loggerhead nesting at Patara on 1 May – 30 Sep.