Santorini Weather in October
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Europe › 🇬🇷 Greece › Santorini
Updated: March 2026
Is October a Good Time to Visit Santorini?
October is a excellent time to visit Santorini (8/10). With 10 daily sunshine hours and only 4 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 8th sunniest of the year in Santorini. Beach and outdoor-focused visitors will find October ideal, though hotel prices reflect demand and popular sites get crowded by mid-morning. November offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Santorini's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: book accommodation at least 6-8 weeks ahead, as popular hotels fill quickly during October. Purchasing skip-the-line tickets for major attractions in advance saves meaningful time. If you have flexibility, arriving a few days before or after peak weekends reduces both crowds and prices noticeably.
The single most important thing to know about visiting Santorini in October: conditions are genuinely cooperative, with 22°C highs and only 4 wet days making this one of the more straightforward months to plan around. Precipitation totals 24mm for the month, spread across roughly 4 days, and 10 sunshine hours per day give you a reliable window for outdoor plans.
22°C
Avg High
18°C
Avg Low
4 days
Rain Days
10h
Sunshine
65%
Humidity
Temperature in Santorini in October
The narrow 4°C gap between daytime and overnight temperatures, characteristic of coastal cities with maritime moderation, means a single mid-layer works across the whole day. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Average wind speeds of 29 km/h add a meaningful windchill factor, making the 22°C temperature feel cooler than it reads. In Fahrenheit: 72°F average high, 64°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature in October
Monthly Precipitation (mm)
What to Wear in Santorini in October
Packing for Santorini in October means dressing for 22°C days and 18°C evenings. A light cotton tee with a casual overshirt works well at 22°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 18°C, a modest 4°C drop that a light cardigan or denim jacket covers. European cobblestones reward low-profile walking shoes over flip-flops or heels, with cushioned trainers or leather walking shoes being the practical choice.
Local tip: Many of Santorini's museums and galleries maintain cool interior temperatures regardless of outdoor conditions. A compact layer in your daypack lets you move between warm streets and chilled exhibition halls without discomfort.
Events in Santorini in October
October has no major festivals or public holidays in Santorini, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
What to Pack for Santorini in October
Based on 22°C average highs and 4 rainy days
- Light jacket or cardigan for cooler evenings
- Mix of short and long-sleeve layers
- Comfortable walking shoes with good arch support
- Universal travel adapter
- Small day pack for city exploration
- Reusable water bottle
Best Activities in Santorini in October
- Explore outdoor markets and street food stallsMid-morning (10am-12pm)At 22°C, the temperature is ideal for extended walking without overheating
- Guided walking tour of the historic centreMorning or late afternoonComfortable temperatures allow several hours on foot without fatigue
- Visit rooftop viewpoints and observation decksGolden hour (1 hour before sunset)Warm clear evenings provide exceptional visibility for panoramic photography
- Day trip to the surrounding countryside or coastFull day (depart by 8am)October is reliably dry enough for rural day trips without weather risk
- Afternoon in a world-class museum or galleryAfternoon (2-5pm)Pairs well with outdoor morning activities and provides a mid-day rest from sightseeing
- Coffee-house or traditional cafe culture experienceMid-morning or post-lunchA cultural ritual in this region that rewards slow appreciation regardless of weather
- Evening live music, theatre, or opera performanceEvening shows typically at 7-9pmConsistent evening temperatures make getting to and from evening venues comfortable
- Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningOctober brings distinct seasonal changes to public green spaces worth exploring
- Try the seasonal farmer's market for local produce and street foodSaturday morning markets typically 8am-1pmOctober seasonal produce is at peak availability, offering dishes not found at other times of year
Why is Santorini mild in October?
October brings the first meaningful shift toward cooler conditions in Santorini, as the sun angle drops and day length shortens. Temperatures averaging 22°C by day and 18°C overnight are still comfortable by most standards, but the trend is clearly downward. At 36 degrees north latitude, autumn light has a particular quality: lower in the sky and warmer in tone, it gives the city a photogenic quality quite different from summer. Conditions remain excellent for outdoor activity, and crowds thin compared to the summer peak. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate -- wear sunscreen. UV 6-7: High -- hat and SPF 30+ essential. UV 8-10: Very High -- limit midday exposure. UV 11+: Extreme -- seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry -- skin and throat may feel parched. 40-60%: Comfortable -- ideal for most people. 60-80%: Sticky -- light, breathable fabrics recommended. Above 80%: Muggy -- heat feels more intense; quick-dry clothing is essential.
Frequently Asked Questions: Santorini in October
October ranks 8th sunniest of the year in Santorini, with an average 10 daily sunshine hours. The driest months are July, August, and June. August is the hottest month (27°C avg high); January is the coolest (13°C). From here, temperatures fall 4°C into November. Compared to last month (September: 25°C high, 1 rain days), October is cooler and wetter. October sits in the middle of the annual sunshine ranking for Santorini, offering a reasonable balance of good weather and manageable crowds.
Year-Round Climate
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 13°C | 11°C | 10 | 8h | View |
| February | 14°C | 11°C | 9 | 9h | View |
| March | 15°C | 12°C | 7 | 10h | View |
| April | 17°C | 14°C | 4 | 11h | View |
| May | 21°C | 17°C | 2 | 12h | View |
| June | 24°C | 21°C | 1 | 13h | View |
| July | 26°C | 23°C | 0 | 13h | View |
| August | 27°C | 24°C | 0 | 13h | View |
| September | 25°C | 22°C | 1 | 11h | View |
| October | 22°C | 18°C | 4 | 10h | View |
| November | 18°C | 15°C | 6 | 8h | View |
| December | 15°C | 12°C | 9 | 7h | View |
Plan Your Trip to Santorini
Nearby Destinations with Similar Weather
These cities are within 500 km and experience broadly comparable weather conditions during the same calendar month, making them practical standalone alternatives or worthwhile additions to a longer regional itinerary.
Data Sources for Santorini
Climate normals represent 30-year averages (1991-2020). Individual years may vary.