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Thasos weather & best time to visit

Sun, sea & sand

Thasos at a glance

Best time
Jun – Sep
Warmest month
Aug · 30°
Warmest sea
Aug · 26.1°
Sunshine a year
2,430 h
Rain a year
683 mm
Climate
Mediterranean
Time zone
UTC+2 / UTC+3
Elevation
6 m

Climate in Thasos

Thasos has a Mediterranean climate with warm to hot, dry summers and mild, wetter winters. August is the warmest month with average highs of 30 °C, while January is the coolest at 10 °C. With around 2,430 hours of sunshine a year, Thasos is sunny; July is the sunniest month with 10.6 hours a day.

Holiday weather through the year

Best time to visit

Best time to visit Thasos

The best time to visit Thasos is from June to September. For a beach holiday – sea from 21 °C, warm and mostly dry – go from June to September. For sightseeing, day trips and hiking, conditions are most comfortable from April to June and from September to November. The wettest month is December with 119 mm of precipitation.

Thasos through the seasons

How the weather changes over the seasons, with averages for each.

Thasos in spring

Mar – May

35

Poor

  • 13–22 °C by day
  • Sea 15 °C
  • 6.8 h of sun a day
  • 23 rainy days in all

Thasos in summer

Jun – Aug

98

Excellent

  • 27–30 °C by day
  • Sea 25 °C
  • 10.2 h of sun a day
  • 10 rainy days in all

Thasos in autumn

Sep – Nov

54

Fair

  • 16–26 °C by day
  • Sea 21 °C
  • 6.0 h of sun a day
  • 19 rainy days in all

Thasos in winter

Dec – Feb

15

Poor

  • 10–12 °C by day
  • Sea 14 °C
  • 3.6 h of sun a day
  • 27 rainy days in all

Which month for what?

Beach & swimming

Jun – Sep

Sea from 21 °C, warm and mostly dry

Sightseeing & hiking

Apr – Jun, Sep – Nov

15–28 °C and not too much rain

Find your perfect month

Tell us what you like and we rate every month in Thasos for you.

Swimming in the sea
Sunshine
Little rain

Your best months: July – August

Based on the climate averages; tap a month to see its details.

Your holiday weather, at a glance

Weather in October

Weather in October

47

Holiday weather in October

Fair

Best time to visit: June – September

Good forSightseeing & walks

A typical day in October

  1. Morning, 08:00: about 15°
  2. Midday, 13:00: about 20°
  3. Afternoon, 16:00: about 20°
  4. Evening, 20:00: about 18°
  5. Night, 23:00: about 16°

07:3118:43

Pleasant evenings; a light layer can help.

Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.

Light for photos in October

Golden hour
Morning 07:14–08:08 · evening 18:06–19:00
Blue hour
Morning 07:03–07:14 · evening 19:00–19:10

Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.

October in Thasos compared with home

Home:

Loading the climate at home …

Early or late October?

In October, daytime highs fall from about 23° at the start of the month to 18° at the end. The sea cools from 22° to 19°. The days get 1.3 h shorter.

Early or late October?
October1 Oct31 Oct
Daytime high23°18°
Night-time low17°12°
Sea22°19°
Daylight11.8 h10.6 h

What is the weather like in Thasos in October?

In October, Thasos is mild: daytime highs average 20 °C, and nights cool down to about 15 °C. The sea averages 20.5 °C – refreshing for a swim. Expect around 5.8 hours of sunshine a day. Rain falls on about 6 days, adding up to 69 mm. All in all, October is a so-so month for a holiday in Thasos.

More details for October

Daylight
11 h 12 min07:31 – 18:43
UV index
4 · moderateclear sky, noon (estimate)All months
Muggy days
1 daydew point 18 °C or moreAll months
Wind
17 km/haverage daily peakAll months
Cloud cover
45 %on averageAll months
Hot days
0 days30 °C or moreAll months
Snow days
0 days1 cm or more of fresh snow
Time zone
UTC+3offset from UTC

How the score comes together

  • Temperatureweight 35 %22 %
  • Seaweight 25 %50 %
  • Sunshineweight 20 %47 %
  • Few rainy daysweight 20 %86 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.

What to pack in October

  • Swimwear
  • Sunscreen
  • A jumper for the evenings

Compare two months in Thasos

Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.

vs

July has the better holiday weather in Thasos: score 100 against 47. In July, days are 9 °C warmer than in October. The sea is 5 °C warmer in July. July has 4 fewer rainy days. The sun shines 5 hours longer a day in July.

October vs July, Thasos
MonthOctoberJuly
Holiday weather score47100better
Daytime high20°29°
Night-time low15°22°
Sea20.5°25.6°
Sunshine5.8 h10.6 hbetter
Rainy days62better
Rainfall69 mm12 mmbetter
Muggy days1better22

Based on the climate averages 1996–2025.

Thasos month by month

The typical weather for every month at a glance.

14January10° · Sea 13° · 3.4 h

In January, Thasos is cool: daytime highs average 10 °C, and nights cool down to about 5 °C. The sea averages 13.2 °C – swimming is only for the hardy. The sun is scarce, with only about 3.4 hours a day. Rain is frequent, with about 9 rainy days and 85 mm in total. All in all, January is not an ideal month for a holiday in Thasos.

Thasos in January
20February11° · Sea 13° · 4.4 h

In February, Thasos is cool: daytime highs average 11 °C, and nights cool down to about 5 °C. The sea averages 12.5 °C – swimming is only for the hardy. Expect around 4.4 hours of sunshine a day. Rain falls on about 8 days, adding up to 73 mm. All in all, February is not an ideal month for a holiday in Thasos.

Thasos in February
20March13° · Sea 13° · 5.3 h

In March, Thasos is cool: daytime highs average 13 °C, and nights cool down to about 7 °C. The sea averages 12.5 °C – swimming is only for the hardy. Expect around 5.3 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 70 mm in total. All in all, March is not an ideal month for a holiday in Thasos.

Thasos in March
28April17° · Sea 15° · 6.7 h

In April, Thasos is mild: daytime highs average 17 °C, and nights cool down to about 11 °C. The sea averages 14.5 °C – swimming is only for the hardy. The sun shines for around 6.7 hours a day. Rain falls on about 7 days, adding up to 47 mm. All in all, April is not an ideal month for a holiday in Thasos.

Thasos in April
56May22° · Sea 19° · 8.4 h

In May, Thasos is warm: daytime highs average 22 °C, and nights cool down to about 15 °C. The sea averages 18.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8.4 hours a day. Rain falls on about 7 days, adding up to 35 mm. All in all, May is a so-so month for a holiday in Thasos.

Thasos in May
94June27° · Sea 23° · 9.7 h

In June, Thasos is warm: daytime highs average 27 °C, and even at night it stays warm at around 20 °C. The sea averages 22.8 °C – refreshing for a swim. With around 9.7 hours of sunshine a day, there is plenty of sun. Rain falls on about 5 days, adding up to 23 mm. The air is often humid and muggy. All in all, June is an excellent month for a holiday in Thasos.

Thasos in June
100July29° · Sea 26° · 10.6 h

In July, Thasos is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. The sea averages 25.6 °C – pleasant for swimming. With around 10.6 hours of sunshine a day, there is plenty of sun. Rain is rare: about 2 days bring 12 mm in total. On about 10 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is an excellent month for a holiday in Thasos.

Thasos in July
100August30° · Sea 26° · 10.2 h

In August, Thasos is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 26.1 °C – lovely and warm for swimming. With around 10.2 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 13 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is an excellent month for a holiday in Thasos.

Thasos in August
97September26° · Sea 24° · 8.1 h

In September, Thasos is warm: daytime highs average 26 °C, and nights cool down to about 19 °C. The sea averages 23.9 °C – pleasant for swimming. The sun shines for around 8.1 hours a day. Rain is rare: about 4 days bring 31 mm in total. All in all, September is an excellent month for a holiday in Thasos.

Thasos in September
47October20° · Sea 21° · 5.8 h

In October, Thasos is mild: daytime highs average 20 °C, and nights cool down to about 15 °C. The sea averages 20.5 °C – refreshing for a swim. Expect around 5.8 hours of sunshine a day. Rain falls on about 6 days, adding up to 69 mm. All in all, October is a so-so month for a holiday in Thasos.

Thasos in October
18November16° · Sea 17° · 4.1 h

In November, Thasos is cool: daytime highs average 16 °C, and nights cool down to about 10 °C. The sea averages 17.3 °C – bracing, so a wetsuit helps for longer swims. Expect around 4.1 hours of sunshine a day. Rain falls on about 9 days, adding up to 110 mm. All in all, November is not an ideal month for a holiday in Thasos.

Thasos in November
11December12° · Sea 15° · 3.0 h

In December, Thasos is cool: daytime highs average 12 °C, and nights cool down to about 7 °C. The sea averages 14.9 °C – swimming is only for the hardy. The sun is scarce, with only about 3.0 hours a day. Rain is frequent, with about 10 rainy days and 119 mm in total. All in all, December is not an ideal month for a holiday in Thasos.

Thasos in December

Climate in detail

Climate through the year

Long-term monthly averages. Tap a month to see its details.

Best time to visit

Nights and sleep in Thasos

How warm the nights get in each month, from the mean night-time low. Tap a month for details.

  • Cold 0–8°
  • Cool 8–15°
  • Pleasant 15–20°
  • Warm 20–24°
  • muggy month (15+ muggy days)

PleasantOctober: nights around 15°. Ideal for sleeping, often with the window open. Muggy on about 1 day (dew point 18 °C or more).

The coolest nights are in January (5°), the warmest in August (23°). Tropical nights of 20 °C and more are the rule from June to August; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in May and from September to October. Nights fall below 8 °C on average from December to March, so the room should be heated. It is muggy (dew point 18 °C or more) on about 68 days a year, mostly from June to August.

Temperatures through the year

Average daytime high, night-time low and sea temperature per month.

OctoberDay 20°Night 15°Sea 21°
DayNightSea
MonthScoreDayNightSeaSunRain daysRain mm
JanuaryJan1410°5°13.2°3.4 h985
FebruaryFeb2011°5°12.5°4.4 h873
MarchMar2013°7°12.5°5.3 h970
AprilApr2817°11°14.5°6.7 h747
MayMay5622°15°18.5°8.4 h735
JuneJun9427°20°22.8°9.7 h523
JulyJul10029°22°25.6°10.6 h212
AugustAug10030°23°26.1°10.2 h28
SeptemberSep9726°19°23.9°8.1 h431
OctoberOct4720°15°20.5°5.8 h669
NovemberNov1816°10°17.3°4.1 h9110
DecemberDec1112°7°14.9°3.0 h10119

Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences

40.78° N, 24.71° E · 6 m · Europe/Athens

Swimming calendar

Sea temperature in Thasos

Monthly sea surface temperature with the range of cooler and warmer years.

Sea in October20.5°Crefreshing

8 in 10 years: 19.6 – 21.8 °C

Swimming season: Jun – Oct

  • cold
  • fresh
  • refreshing
  • pleasant
  • warm
  • very warm
OctoberMean sea temperature 20.5°8 in 10 years 19.6° – 21.8°
20°
Mean sea temperature8 in 10 years20 °C – comfortable for swimming

The sea temperature in Thasos ranges from 12.5 °C in February to 26.1 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.

From October to February the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 25.2 and 27.0 °C.

Sea temperature by month
MonthAverageCool yearWarm yearFeels
JanuaryJan13.2°12.0°14.4°cold
FebruaryFeb12.5°11.2°13.5°cold
MarchMar12.5°11.4°13.5°cold
AprilApr14.5°13.3°15.6°cold
MayMay18.5°17.5°19.3°fresh
JuneJun22.8°22.0°23.8°refreshing
JulyJul25.6°24.9°26.6°pleasant
AugustAug26.1°25.2°27.0°warm
SeptemberSep23.9°23.1°24.6°pleasant
OctoberOct20.5°19.6°21.8°refreshing
NovemberNov17.3°16.1°18.8°fresh
DecemberDec14.9°13.8°16.1°cold
Sunshine

Sunshine hours in Thasos

Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.

Per year
2,430 hours
Sunniest month
Jul · 10.6 h a day
Least sunshine
Dec · 3.0 h a day
OctoberSunshine 5.8 hDaylight 11.2 hShare of daylight 52 %
SunshineDaylight

In October, the sun shines for about 5.8 of 11.2 hours of daylight in Thasos, 52 % of the daylight hours.

Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.

Rain

Rain in Thasos: rainy days and rainfall

A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.

Per year
683 mm on 78 days
Wettest month
Dec · 119 mm
Driest month
Aug · 8 mm
OctoberRainy days 6Rainfall 69 mm

In October, Thasos has about 6 rainy days with 69 mm of rain in total.

Sun protection

UV index in Thasos

How strong the sun is at noon, month by month, and how quickly unprotected skin burns.

Clear-sky UV in October
4 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.

The sun is strongest in June (UV 10).

Minutes until sunburn in October

Very fair skin
about 35 min
Fair skin
about 45 min
Light brown skin
about 60 min
Olive skin
about 75 min

Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.

Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.

Wind & clouds

Wind and clouds in Thasos

How breezy and how cloudy Thasos is through the year. Tap a month to select it on the whole page.

Wind

Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.

Year average
17 km/h · gentle breeze
Windiest month
Feb · 19 km/h
Calmest month
Jun · 14 km/h
OctoberWind 17 km/hBeaufort 3
20
WindBeaufort 4

In October, the wind in Thasos typically peaks at 17 km/h during the day: Beaufort 3, gentle breeze.

Breezy months for windsurfing and kiting

The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.

Clouds

Average share of the sky covered by cloud, day and night.

Year average
44 % · mostly sunny
Clearest month
Aug · 17 %
Cloudiest month
Dec · 60 %
OctoberCloud cover 45 %Sunshine 5.8 h

In October, cloud covers on average 45 % of the sky over Thasos: variable cloud, with about 5.8 hours of sunshine a day.

Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.

Heat & humidity

Heat and humidity in Thasos

How often the day gets hot in Thasos (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.

Hot days a year
27 days
Hottest month
Aug · 30 °C
Hot months
none

Heat calendar

  • pleasant
  • some hot or muggy days
  • often muggy
  • often hot
  • hot and muggy
OctoberHot days (30 °C+) 0Daytime high 20 °C

In October, Thasos has about 0 hot days, with an average daytime high of 20 °C: pleasant. Heat plays no part this month.

Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year

Planning a trip to Thasos

Weather for your travel dates

Pick your arrival and length of stay, and we sum up the weather to expect.

Thasos in the school holidays

How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.

Thasos has its best school-holiday weather during the summer holidays (score 100) and its weakest during the Christmas holidays (score 13).

  • Easter holidays

    Mar – Apr

    26

    Poor

    • 16 °C by day
    • Sea 14 °C
    • 6.3 h of sun a day
    • 8 rainy days a month
  • May half-term

    May – Jun

    64

    Good

    • 23 °C by day
    • Sea 19 °C
    • 8.7 h of sun a day
    • 6 rainy days a month

    Good for: Sightseeing & walks

  • Summer holidays

    Jul – Aug

    100

    ExcellentBest holidays

    • 30 °C by day
    • Sea 26 °C
    • 10.3 h of sun a day
    • 2 rainy days a month

    Good for: Beach & swimming

  • October half-term

    Oct

    47

    Fair

    • 20 °C by day
    • Sea 21 °C
    • 5.8 h of sun a day
    • 6 rainy days a month

    Good for: Sightseeing & walks

  • Christmas holidays

    Dec – Jan

    13

    Poor

    • 11 °C by day
    • Sea 14 °C
    • 3.2 h of sun a day
    • 10 rainy days a month

Based on the climate averages 1996–2025.

Getting there

Flying from

Nonstop flight
about 3 h 15 min
Distance
2,260 km
Time zone
UTC+3
Jet lag
Hardly any (under 3 h)

Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.

Compare & alternatives

Compare

Thasos compared

Put Thasos side by side with another destination.

Nearby:
Compare with home:

Thasos vs Kavala

In October the holiday weather in Thasos and Kavala is about equally good (score 47 vs 49). During the day Kavala is 1 °C warmer than Thasos. The sea is about equally warm.

Thasos vs Kavala, in October
in OctoberThasosKavala
Holiday weather score4749
Daytime high20°21°
Sea21°21°
Sunshine6 h6 h
Rainy days67
Best timeJun – SepJun – Sep

Through the year

OctoberThasos 20°Kavala 21°
ThasosKavala
Go to Kavala
Ranking

Greece in October: the best places

In October, Thasos ranks 30 among the 31 nearest destinations in this country.

  1. Larissa22°89
  2. 2Pella22°87
  3. 3Serres22°85
  4. 4Thessaloniki22°21°85
  5. 5Veria22°85
  6. 6Kozani19°85
  7. 7Drama22°84
  8. 8Komotini21°84
  9. 30ThasosThis page20°21°47
All destinations: Greece

Near Thasos

Other destinations close by.

Places with a climate like Thasos

Destinations whose weather through the year is closest to Thasos's – good alternatives.

  1. 84 % similar51ÇanakkaleTurkey21°20°Best time: Jun – Sep
  2. 84 % similar45GeliboluTurkey21°20°Best time: Jun – Sep
  3. 81 % similar46BozcaadaTurkey21°20°Best time: Jun – Sep
  4. 80 % similar52SkopelosGreece21°21°Best time: Jun – Sep

Frequently asked questions about Thasos

When is the best time to visit Thasos?

The best time to visit Thasos is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.

How warm is the sea in Thasos?

The sea temperature in Thasos ranges from 12.5 °C in February to 26.1 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.

Can you swim in Thasos in October?

Yes. In October the sea averages 20.5 °C – refreshing for a swim.

What is the warmest month in Thasos?

August is the warmest month, with average highs of 30 °C and nights around 23 °C. January is the coolest month at 10 °C.

When does it rain most in Thasos?

The wettest month is December with 119 mm of precipitation. The driest month is August with 8 mm.

How many hours of sunshine does Thasos get?

Thasos gets around 2,430 hours of sunshine a year. The sunniest month is July with 10.6 hours a day; in December there are 3.0 hours a day.

What time zone is Thasos in?

Thasos is on UTC+2 in January and UTC+3 in July.

How long is the flight from London to Thasos?

A nonstop flight from London to Thasos takes about 3 h 15 min, for a straight-line distance of about 2,260 km.

Which school holidays are best for Thasos?

Thasos has its best school-holiday weather during the summer holidays (score 100) and its weakest during the Christmas holidays (score 13). Holiday ratings (0–100): Easter holidays 26, May half-term 64, summer holidays 100, October half-term 47, Christmas holidays 13.