September keeps the heat but loses the peak crowds. The caldera villages are built on cliffs: almost everything involves steps.
If you’re arriving by cruise ship, you’ll usually be taken ashore by tender boat to Fira’s old port, then up by cable car, the steps or donkey.
The weather in Santorini in September
Shoulder months for comparison
| Station | August | September | October |
|---|---|---|---|
| Santorini airport (HNMS station 16744) | — / —unconfirmed | — / —unconfirmed | — / —unconfirmed |
Sources: Santorini airport (HNMS station 16744): UNCONFIRMED monthly normals: HNMS city table could not be retrieved. Summary only (Sustainability 2021, 13(16), 9107, HNMS data 1982-2019): mean monthly temperature 12.2 °C (Feb) to 26.2 °C (Jul); mean wind 5.3 m/s (May) to 7.4 m/s (Feb); dry Etesian north winds in summer. (source). Normals are long-term averages, not a forecast. Sunrise, sunset and daylight are calculated for the 15th of the month in 2026 (local time). °F and inches are converted from the metric figures. “n/a” means the station doesn’t report sunshine in this dataset.
Monthly averages for Santorini are unconfirmed: we could only find a yearly summary (shown in the source note below). Use the live forecast nearer the time.
- UNCONFIRMED monthly normals: we couldn’t retrieve the HNMS table for Santorini. HNMS-based research (1982-2019) gives mean temperatures from about 12°C in February to about 26°C in July, with mean winds of 5.3-7.4 m/s.
- Summer Etesian (meltemi) north winds make it feel cooler and blow hats and skirts about.
- Very little cloud in summer: strong sun on white walls.
This week in Fira & Oia
The outfit plan in this guide is built from 30-year averages for September. This panel is the real forecast for the next 7 days, turned into packing tips for your cabin baggage.
Fira
The live forecast needs JavaScript. Everything else in this guide works without it, and the climate-based plan above covers any September trip.
Oia
The live forecast needs JavaScript. Everything else in this guide works without it, and the climate-based plan above covers any September trip.
Weather data from MET Norway (CC BY 4.0), adapted into packing tips.
Karen’s tipWeather changes fastLayer it up
Three thin layers from your capsule beat one thick coat in Santorini in September: add or peel them off as the day changes.
- Base · next to skin
- Vest or tee
- Mid · warmth
- Light knit or wrap
- Outer · wind and rain
- Windbreaker
☀ When it warms up: Midday on the caldera: down to the vest. Sunset in Oia: wrap on; the wind picks up.
🎒 Stash it: Wrap folds into a crossbody.
Check the live “This week” forecast above for big swings between morning and afternoon.
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Karen’s tip On the plane
- Wear your heaviest items on travel day: your bulkiest shoes and any layers. They’d take the most space and weight in your bag.
- Too hot for a jacket? Skip the jacket and take a neutral-colour wrap or pashmina. It keeps you warm on the plane and doubles as an evening wrap and as a shoulder cover for churches here.
- An inflatable cushion that packs into its own small, discreet pouch: a head cushion on the flight and a pillow on beach sunbeds. You choose how much air goes in, so it’s as firm or soft as you like, which a foam neck pillow can’t do.
More comfort tips for flying economy → · Is a lounge worth it? →
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What locals actually wear
Sourced tips summarise or quote the linked source; anything marked editorial is our own advice. We don’t make up “local” style tips.
- Greek Orthodox churches and monasteries expect shoulders and knees covered; some monasteries lend wraps or skirts at the door (common practice; not an official nationwide rule, editorial).PackToWear editorial advice, not a quote
- Donkey and mule rides on the Fira steps are limited by a 2018 circular to 100 kg or one-fifth of the animal’s weight; welfare groups urge visitors to walk or take the cable car.Source [2]: GTP Headlines, 10 Oct 2018
3 outfit formulas
Your style: best fits here are Riviera / Euro summer and Boho with an edge. Find your holiday style →
Caldera walk
- Shorts or light trousers
- Tee
- Grippy trainers
- Cap, sunglasses
Tip: The Fira-Oia trail is about 10 km with rough sections (editorial).
Oia sunset
- Midi dress (a heavier fabric or one with a slip, for the wind)
- Flat sandals with grippy soles
- Light knit or wrap
Tip: Wind and steps: no floaty mini dresses, no heels.
Black-sand beach
- Swimsuit + cover-up
- Water shoes or sandals
Tip: Black sand gets extremely hot.
Swatches are a colour guide for each formula, not product photos.
Day to night in Santorini
Same capsule, evening version: keep the base, swap one or two pieces. Every swap below stays cabin-bag friendly. How day-to-night swaps work →
01Caldera walk → Oia sunset
- Base (stays the same)
- Flat grippy sandals
- ☀ Day add-ons
- Tee and shorts
- ☾ Evening swaps
- Midi dress
- Wrap
- Earrings
Pieces added to your bag: 0, nothing new.
Karen’s tipChange your hair, change the look
Swapping my hair from up in the day to down in the evening (or the other way round) gives the whole outfit a different look. Even one piece of jewellery I didn’t wear earlier does the same.
💡 It’s a free trick, and it saves packing extra outfits.
We may earn a small commission if you buy through our links, at no extra cost to you.
Preview note: placeholder links to each shop’s normal pages, with no affiliate tracking yet.
What’s underfoot
The ground
- Hundreds of steps in Fira, Oia and Imerovigli
- Polished marble and whitewashed paths (slippery, especially when wet or dusty)
- Donkey paths with droppings on the Fira old-port steps
- Black volcanic sand
12,000-20,000 steps with lots of stairseditorial estimate
Trouble spots
- Fira old port to Fira: about 587-588 steps (cable car takes about 3 minutes; long queues when ships are in)
- Oia sunset crowds on narrow paths
- Tender boat transfers for cruise passengers
☀ Day shoes
Grippy trainers or rubber-soled sandals with a back strap.
☾ Evening shoes
Flat sandals with rubber soles.
✕ Leave at home
Heels, wedges, smooth soles.
Season notes: Windy all summer; marble is slick.
Karen’s tipHeels and cobbles don’t mix. Check the ground before you pack heels: thin heels catch between cobbles, so a wedge or block heel is steadier for evenings.
One pair, day to night: The best space-savers are a sleek waterproof leather ankle boot (Paris, London, Vienna & Prague, Amsterdam, Rome in December), a clean minimalist leather trainer or slip-on loafer (Tokyo, London), and a low block-heel sandal (cruise). Travel day: wear the heavier pair (see On the plane). Break in shoes before the trip.
We may earn a small commission if you buy through our links, at no extra cost to you.
Sources: santoriniports.gov.gr · news.gtp.gr. Shoe recommendations are our own editorial advice based on these sources, checked 20 Oct 2026.
The 10 kg cabin bag packing list
Your bag: 55 × 40 × 20 cm
Planned for 4-7 nights with a paid 10 kg cabin bag (55 × 40 × 20 cm, Ryanair’s size) plus the free under-seat bag. The rule that makes it work: wear your bulkiest items on the plane.
Wear on the plane worn
In the bag 11 items
Karen’s tipRoll, don’t fold. I roll my clothes, stuff socks and small bits inside my shoes, and keep socks in a clear bag that comes home full of dirty laundry or wet swimming costumes. How I pack →
Karen’s tipPack a bag in a bag.A foldable shopping bag that folds into its own little pouch, for shopping, dirty laundry and pool towels. It saves buying a bag abroad.Why, and where to get one →
- Heels and wedges
- Wheeled case if your hotel is on the caldera (often only reachable by steps, editorial)
Karen’s tipLeave the towel at home. “I use the towels in my room, and hotels usually offer pool towels too, sometimes for a small refundable deposit. Worst case, I buy a cheap towel locally and leave it behind.”
Liquids: going vs coming home
UK airports vary. Heathrow, Gatwick, Birmingham, Bristol, Edinburgh, Belfast International, Belfast City, Bournemouth, Southend allow containers up to 2 litres; most others, including Manchester, Stansted and Luton, are still 100 ml.
- 100 mlSantorini (JTR), in a 1 L clear bagto re-check
Pack your liquids to 100 ml for the whole trip.
Pack every liquid in 100 ml bottles inside a 1 litre clear bag, so the same pouch works on both legs. Travelling as a couple, each of you gets your own 1 litre bag, so split the toiletries.
Karen’s tipWater bottle: keep it full through a 2-litre UK airport, or take it empty through a 100 ml one. Flying home: Santorini is 100 ml, so empty it and refill airside.Check your airport →
Karen’s tipDecant, don’t buy mini. I decant sun tan lotion into clear 100 ml spray bottles, and my day cream, night cream and cleanser into one squashy three-section silicone pot for trips of up to 4–5 days (separate pots if longer). Far cheaper than minis. How to do it →
Karen’s tip Check your room first
Read the hotel, Airbnb or hostel listing, or message the host, and ask whether they provide:
- Iron or steamer
- Hairdryer
- Toiletries: shampoo, shower gel (conditioner often isn’t supplied)
- Towels, plus beach or pool towels
- Washing machine or laundry service
- Plug adapters or USB sockets
- Kettle, tea and coffee
- Slippers and a robe
- A safe
- Beach gear: umbrella, loungers
Here: Cave hotels and caldera suites usually supply hairdryers and toiletries; small studios may not.
Hostels often don’t provide towels or padlocks.
Karen’s tip Bring your own hair products. Most hotels supply shampoo but often not conditioner. Decant favourites into leak-proof travel bottles under 100 ml (fill them about ¾ full), or switch to solid bars, which don’t count as liquids. Amazon UK: Lericttor 100ml Silicone Travel Bottles ↗Check price · Amazon UK: Friendly Soap Travel Bar 95g (hair & body) ↗£4.72, price checked 20 Oct 2026 Every item they provide is one you don’t carry.
Karen’s tip No-iron packing
Pick fabrics that don’t crease. Woven cotton and linen crease; knits, merino, jersey and most polyester blends barely do.
- Hang creased clothes in the bathroom while you shower.
- Pack a small crease-release spray under 100 ml (it counts as a liquid).
- Roll clothes, and keep crease-prone pieces in a packing cube on top, not in a vacuum bag.
- Check whether your hotel or Airbnb has an iron.
Karen’s tip Buy it there?
Adding a checked bag typically costs around £60–80 return on a budget airline. So if your bag is full, buying bulky or liquid items when you arrive is often cheaper.
Think sun cream, full-size shampoo, insect repellent, a beach towel or flip-flops.
Buy before you go in this destination: Island shops are more expensive than mainland supermarkets; bring the basics in 100 ml bottles (editorial).
Tick items off as you pack (your ticks aren’t saved). Liquids rules depend on your departure airport and change from time to time. Check your airport’s current security rules before you decant your toiletries (see liquids rules by airport).
Flying there on Ryanair, easyJet or Wizz?
- A week of beachwear fits in one 10 kg cabin bag (Jet2 and TUI include one; on Ryanair it’s Priority & 2 Cabin Bags, on easyJet a large cabin bag) plus a free under-seat bag.
- Couples: one 10 kg cabin bag each, and share one under-seat bag for sun cream, chargers and documents. Or book a single 15 kg hold bag between you and both travel with just the free bag: compare the prices for your dates.
- Cruise passengers: tender boats mean stepping from a moving launch; wear flat shoes and keep hands free.
Duty-free bag: Buying at the airport? On Ryanair, Wizz, Transavia, Norwegian and easyJet one shop bag can usually go on board on top of your bag; on Jet2, BA, Aer Lingus, Vueling and Lufthansa it has to fit inside your allowance. Gate staff decide, so keep it small. Duty free and your free baggage →
Sizes come from each airline’s official page (see our free baggage reference for links). Rules change, so check your booking before you fly.
Baggage picks
The ticks compare each bag’s stated outer dimensions with each airline’s free-bag size. A struck-through name means the bag is too big for that airline. Soft bags squash a little; hard cases don’t. We haven’t tested these bags ourselves yet.
Want to fit more in? Compression cubes and packing cubes that store more in a free bag →
Pieces that fit the formulas
- M&SM&S Ribbed Textured Scoop Neck Swimsuit£30 · checked 20 Oct 2026
- QuinceOrganic cotton poplin long-sleeve shirt
- M&SM&S Satin Lace Insert Midaxi Slip Dress£45 · checked 20 Oct 2026
- M&S (Seafolly)Seafolly Amnesia Pure Cotton Tassel Beach Cover Up Kaftan£55 · checked 20 Oct 2026
- M&S (River Island)River Island Block Heel Sandals£42 · checked 20 Oct 2026
- M&S (REEF)REEF Water Vista Ankle Strap Flatform Sandals£21 · checked 20 Oct 2026
- QuinceSantorini polarised acetate sunglasses
- Amazon UKBaie Botanique Soleil Organic Mineral Sunscreen SPF50 110gCheck price
- M&SM&S Set of 3 Packing Cubes£12 · checked 20 Oct 2026
We may earn a small commission if you buy through our links, at no extra cost to you. Prices are shown only where we confirmed them on the retailer’s page (checked 20 Oct 2026); otherwise check the current price.
Dates and practicalities
Cruise day tips
Tender boats land at Fira’s old port. Options up are the cable car, the 580-odd steps or a donkey. Allow time for the return queue when several ships are in. [1]
Entry requirements
Schengen 90/180; EES.
Share the load
- one 10 kg cabin bag each, and share one under-seat bag for sun cream, chargers and documents. Or book a single 15 kg hold bag between you and both travel with just the free bag: compare the prices for your dates.
- Pack every liquid in 100 ml bottles inside a 1 litre clear bag, so the same pouch works on both legs. Travelling as a couple, each of you gets your own 1 litre bag, so split the toiletries.
- Share one set of chargers, adaptor and toiletries; each of you still gets your own liquids bag allowance.
- Split each person’s outfits across both bags, so a gate-checked bag doesn’t leave one of you with nothing.
General advice from PackToWear.
Other seasons
Jun-Aug
Hottest and busiest, meltemi winds.
Oct
Warm, quieter; some rain.
Nov-Mar
Cool, windy, many hotels closed (UNCONFIRMED climate numbers).
Apr-May
Mild; sea still cool.
Sources
- Cruise: tendering to Fira old port, Municipal Port Fund of Thira
- Circular sets weight limits for Santorini donkey rides (max 100 kg or 1/5 of animal’s weight), GTP Headlines, 10 Oct 2018
- PackToWear editorial guidance (not an official rule; based on general travel experience), PackToWear
- Climate Change and Thermal Comfort in Top Tourist Destinations: the Case of Santorini (HNMS data 1982-2019), Sustainability 2021, 13(16), 9107
- Security control, Santorini Airport (Fraport Greece)
- NIVEA Sun Protect & Moisture SPF50 200ml €10.30 at AB Vassilopoulos (via Wolt listing), AB Vassilopoulos / Wolt
Airline free-bag sizes: see the free baggage reference. Climate: see the source under the weather table. Live forecast: weather data from MET Norway (CC BY 4.0), adapted into packing tips. Photos: Unsplash, credited on each image and on the photo credits page. Last checked October 2026.