Weather in Santorini 🇬🇷
Monthly weather averages & travel planning
October
Avg Temp
22°C
Rain Days
4 days
Sun Hours
10 hrs
Humidity
65%
Europe › 🇬🇷 Greece › Santorini
Updated: March 2026
Is October a Good Time to Visit Santorini?
8/10
Excellent
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.
vs September:25°C avg high
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
72°F
Avg High
18°C
64°F
Avg Low
4 days
24 mm total
Rain Days
10h
per day avg
Sunshine
65%
Moderate
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 Trends
High
Low
Rainfall (mm)
0-20 mm21-50 mm51-100 mm100+ mm
What to Wear in Santorini in October
Morning18°CBefore the day warms up
Afternoon22°CPeak daytime temperature
Evening21°CAfter sunset cools down
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
In October, Santorini experiences average highs of 22°C (72°F) and lows of 18°C (64°F). Expect around 4 rainy days and 10 hours of sunshine per day, with humidity averaging 65%. The 4°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 6, so sun protection is advisable on clear days.
Santorini typically sees 4 rainy days in October, with total precipitation of around 24mm. This makes October one of the drier months of the year, and a reliable window for outdoor sightseeing and day trips. Rain showers tend to be brief when they do occur. For context, the driest month in Santorini typically sees 4-6 fewer rain days than October.
Pack light layers, a light jacket for evenings, comfortable walking shoes, and sunscreen for Santorini in October. Daytime temperatures of 22°C are pleasant, but the evening drop to 18°C means a jacket is essential if you plan to be out after dark. Rain is infrequent with only 4 wet days, so a light rain layer is optional. Comfortable walking shoes are a priority given the amount of ground most visitors cover.
Yes, October is an excellent time to visit Santorini. With 10 daily sunshine hours and only 4 rainy days, conditions are ideal for sightseeing and outdoor activities. Temperatures averaging 22°C during the day are comfortable for long walks and outdoor dining. This is peak travel season, so booking accommodation in advance and arriving at popular attractions early in the morning helps avoid the busiest periods.
The average high temperature in Santorini in October is 22°C (72°F), and the average low is 18°C (64°F). The mean daily temperature is approximately 20°C (68°F). The day-to-night range of 4°C is narrow, typical of coastal or maritime cities. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Santorini is generally June. June offers the most sunshine at 14 hours per day and only 1 rainy days. Average temperatures reach 24°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around June gives you the best chance of dry, bright weather.
October is shoulder or low season in Santorini, meaning fewer tourists and generally lower prices than peak months. With 10 sunshine hours and 4 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In October, Santorini suits a range of activities thanks to mild temperatures around 22°C. With few rainy days, outdoor activities are highly recommended. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 10 hours of sunshine, parks and waterfront walks are particularly enjoyable.
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 | 12h | View |
| May | 21°C | 17°C | 2 | 13h | View |
| June | 24°C | 21°C | 1 | 14h | View |
| July | 26°C | 23°C | 0 | 13h | View |
| August | 27°C | 24°C | 0 | 13h | View |
| September | 25°C | 22°C | 1 | 12h | View |
| October | 22°C | 18°C | 4 | 10h | View |
| November | 18°C | 15°C | 6 | 9h | View |
| December | 15°C | 12°C | 9 | 8h | View |
January
10 rain days, 8h sun
13°11°
February
9 rain days, 9h sun
14°11°
March
7 rain days, 10h sun
15°12°
April
4 rain days, 12h sun
17°14°
May
2 rain days, 13h sun
21°17°
June
1 rain days, 14h sun
24°21°
July
0 rain days, 13h sun
26°23°
August
0 rain days, 13h sun
27°24°
September
1 rain days, 12h sun
25°22°
October
4 rain days, 10h sun
22°18°
November
6 rain days, 9h sun
18°15°
December
9 rain days, 8h sun
15°12°
Other Months in Santorini
Plan Your Trip to Santorini
Nearby Destinations
Cities within 500 km with comparable weather conditions
Data Sources for Santorini
Climate normals represent 30-year averages (1991-2020). Individual years may vary.