AI-generatedKarystos at a glance
- Best time
- Jun – Sep
- Warmest month
- Jul · 32°
- Warmest sea
- Aug · 25.2°
- Sunshine a year
- 2,700 h
- Rain a year
- 389 mm
- Climate
- Mediterranean
- Time zone
- UTC+2 / UTC+3
- Elevation
- 7 m
Climate in Karystos
Karystos has a Mediterranean climate with warm to hot, dry summers and mild, wetter winters. July is the warmest month with average highs of 32 °C, while January is the coolest at 14 °C. With around 2,700 hours of sunshine a year, Karystos is sunny; July is the sunniest month with 11.8 hours a day.
Holiday weather through the year
Best time to visit Karystos
The best time to visit Karystos is from June to September. For a beach holiday – sea from 21 °C, warm and mostly dry – go from June to October. For sightseeing, day trips and hiking, conditions are most comfortable from March to May and from October to December. The wettest month is December with 66 mm of precipitation.
Karystos through the seasons
How the weather changes over the seasons, with averages for each.
Karystos in spring
Mar – May
Fair
- 18–26 °C by day
- Sea 16 °C
- 7.8 h of sun a day
- 17 rainy days in all
Karystos in summer
Jun – Aug
Excellent
- 30–32 °C by day
- Sea 24 °C
- 11.3 h of sun a day
- 4 rainy days in all
Karystos in autumn
Sep – Nov
Good
- 20–28 °C by day
- Sea 22 °C
- 6.6 h of sun a day
- 14 rainy days in all
Karystos in winter
Dec – Feb
Poor
- 14–15 °C by day
- Sea 15 °C
- 3.7 h of sun a day
- 26 rainy days in all
Which month for what?
Beach & swimming
Jun – Oct
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Mar – May, Oct – Dec
15–28 °C and not too much rain
Find your perfect month
Tell us what you like and we rate every month in Karystos for you.
Your best months: June, August – September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: June – September
Where to go in OctoberSea temperature in October
Good forBeach & swimmingSightseeing & walks
A typical day in October
- Morning, 08:00: about 16°
- Midday, 13:00: about 23°
- Afternoon, 16:00: about 24°
- Evening, 20:00: about 20°
- Night, 23:00: about 18°
07:3018:46
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 07:13–08:05 · evening 18:11–19:03
- Blue hour
- Morning 07:03–07:13 · evening 19:03–19:13
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 Karystos compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 26° at the start of the month to 22° at the end. The sea cools from 23° to 20°. The days get 1.1 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 26° | 22° |
| Night-time low | 17° | 14° |
| Sea | 23° | 20° |
| Daylight | 11.8 h | 10.7 h |
What is the weather like in Karystos in October?
In October, Karystos is warm: daytime highs average 24 °C, and nights cool down to about 16 °C. The sea averages 21.6 °C – refreshing for a swim. The sun shines for around 6.6 hours a day. Rain is rare: about 4 days bring 27 mm in total. All in all, October is a good month for a holiday in Karystos.
More details for October
- Daylight
- 11 h 17 min07:30 – 18:46
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 38 %on averageAll months
- Hot days
- 2 days30 °C or moreAll months
- Time zone
- UTC+3offset from UTC
How the score comes together
- Temperatureweight 35 %83 %
- Seaweight 25 %66 %
- Sunshineweight 20 %60 %
- Few rainy daysweight 20 %99 %
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 Karystos
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
September has the better holiday weather in Karystos: score 99 against 77. In September, days are 4 °C warmer than in October. The sea is 3 °C warmer in September. September has one rainy day fewer. The sun shines 2 hours longer a day in September.
| Month | October | September |
|---|---|---|
| Holiday weather score | 77 | 99better |
| Daytime high | 24° | 28° |
| Night-time low | 16° | 19° |
| Sea | 21.6° | 24.1° |
| Sunshine | 6.6 h | 8.8 hbetter |
| Rainy days | 4 | 3better |
| Rainfall | 27 mm | 17 mmbetter |
| Muggy days | 1better | 2 |
Based on the climate averages 1996–2025.
Karystos month by month
The typical weather for every month at a glance.
15January14° · Sea 15° · 3.5 h
In January, Karystos is cool: daytime highs average 14 °C, and nights cool down to about 7 °C. The sea averages 15.0 °C – swimming is only for the hardy. The sun is scarce, with only about 3.5 hours a day. Rain falls on about 9 days, adding up to 58 mm. All in all, January is not an ideal month for a holiday in Karystos.
Karystos in January20February15° · Sea 15° · 4.6 h
In February, Karystos is cool: daytime highs average 15 °C, and nights cool down to about 7 °C. The sea averages 14.7 °C – swimming is only for the hardy. Expect around 4.6 hours of sunshine a day. Rain falls on about 8 days, adding up to 53 mm. All in all, February is not an ideal month for a holiday in Karystos.
Karystos in February25March18° · Sea 15° · 6.1 h
In March, Karystos is mild: daytime highs average 18 °C, and nights cool down to about 9 °C. The sea averages 14.8 °C – swimming is only for the hardy. Expect around 6.1 hours of sunshine a day. Rain falls on about 8 days, adding up to 55 mm. All in all, March is not an ideal month for a holiday in Karystos.
Karystos in March48April21° · Sea 16° · 8.1 h
In April, Karystos is warm: daytime highs average 21 °C, and nights cool down to about 11 °C. The sea averages 15.5 °C – swimming is only for the hardy. The sun shines for around 8.1 hours a day. Rain falls on about 5 days, adding up to 30 mm. All in all, April is a so-so month for a holiday in Karystos.
Karystos in April79May26° · Sea 18° · 9.3 h
In May, Karystos is warm: daytime highs average 26 °C, and nights cool down to about 16 °C. The sea averages 18.0 °C – bracing, so a wetsuit helps for longer swims. With around 9.3 hours of sunshine a day, there is plenty of sun. Rain is rare: about 4 days bring 17 mm in total. All in all, May is a good month for a holiday in Karystos.
Karystos in May92June30° · Sea 22° · 11.3 h
In June, Karystos is hot: daytime highs average 30 °C, and even at night it stays warm at around 20 °C. The sea averages 21.8 °C – refreshing for a swim. With around 11.3 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 15 days the thermometer climbs to 30 °C or more. All in all, June is an excellent month for a holiday in Karystos.
Karystos in June94July32° · Sea 25° · 11.8 h
In July, Karystos is hot: daytime highs average 32 °C, and even at night it stays warm at around 23 °C. The sea averages 24.5 °C – pleasant for swimming. With around 11.8 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 25 days the thermometer climbs to 30 °C or more. All in all, July is an excellent month for a holiday in Karystos.
Karystos in July96August32° · Sea 25° · 10.9 h
In August, Karystos is hot: daytime highs average 32 °C, and even at night it stays warm at around 23 °C. The sea averages 25.2 °C – pleasant for swimming. With around 10.9 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 23 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Karystos.
Karystos in August99September28° · Sea 24° · 8.8 h
In September, Karystos is hot: daytime highs average 28 °C, and nights cool down to about 19 °C. The sea averages 24.1 °C – pleasant for swimming. The sun shines for around 8.8 hours a day. Rain is rare: about 3 days bring 17 mm in total. On about 10 days the thermometer climbs to 30 °C or more. All in all, September is an excellent month for a holiday in Karystos.
Karystos in September77October24° · Sea 22° · 6.6 h
In October, Karystos is warm: daytime highs average 24 °C, and nights cool down to about 16 °C. The sea averages 21.6 °C – refreshing for a swim. The sun shines for around 6.6 hours a day. Rain is rare: about 4 days bring 27 mm in total. All in all, October is a good month for a holiday in Karystos.
Karystos in October31November20° · Sea 19° · 4.4 h
In November, Karystos is mild: daytime highs average 20 °C, and nights cool down to about 12 °C. The sea averages 18.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 4.4 hours of sunshine a day. Rain falls on about 7 days, adding up to 46 mm. All in all, November is not an ideal month for a holiday in Karystos.
Karystos in November13December15° · Sea 16° · 3.1 h
In December, Karystos is cool: daytime highs average 15 °C, and nights cool down to about 9 °C. The sea averages 16.4 °C – swimming is only for the hardy. The sun is scarce, with only about 3.1 hours a day. Rain is frequent, with about 9 rainy days and 66 mm in total. All in all, December is not an ideal month for a holiday in Karystos.
Karystos in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Karystos
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°
PleasantOctober: nights around 16°. 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 (7°), 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 January to February, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 15 | 14° | 7° | 15.0° | 3.5 h | 9 | 58 |
| FebruaryFeb | 20 | 15° | 7° | 14.7° | 4.6 h | 8 | 53 |
| MarchMar | 25 | 18° | 9° | 14.8° | 6.1 h | 8 | 55 |
| AprilApr | 48 | 21° | 11° | 15.5° | 8.1 h | 5 | 30 |
| MayMay | 79 | 26° | 16° | 18.0° | 9.3 h | 4 | 17 |
| JuneJun | 92 | 30° | 20° | 21.8° | 11.3 h | 2 | 10 |
| JulyJul | 94 | 32° | 23° | 24.5° | 11.8 h | 1 | 5 |
| AugustAug | 96 | 32° | 23° | 25.2° | 10.9 h | 1 | 5 |
| SeptemberSep | 99 | 28° | 19° | 24.1° | 8.8 h | 3 | 17 |
| OctoberOct | 77 | 24° | 16° | 21.6° | 6.6 h | 4 | 27 |
| NovemberNov | 31 | 20° | 12° | 18.8° | 4.4 h | 7 | 46 |
| DecemberDec | 13 | 15° | 9° | 16.4° | 3.1 h | 9 | 66 |
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
38.01° N, 24.42° E · 7 m · Europe/Athens
Sea temperature
Sea temperature in Karystos
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 20.4 – 22.7 °C
Swimming season: Jun – Oct
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Karystos ranges from 14.7 °C in February to 25.2 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
The sea warms up slowly: it is warmest in August, while the air already peaks in July. From December to January 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 24.1 and 26.1 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 15.0° | 14.1° | 15.9° | cold |
| FebruaryFeb | 14.7° | 13.8° | 15.3° | cold |
| MarchMar | 14.8° | 14.2° | 15.5° | cold |
| AprilApr | 15.5° | 14.9° | 16.3° | cold |
| MayMay | 18.0° | 17.0° | 18.7° | fresh |
| JuneJun | 21.8° | 21.0° | 22.6° | refreshing |
| JulyJul | 24.5° | 23.9° | 25.3° | pleasant |
| AugustAug | 25.2° | 24.1° | 26.1° | pleasant |
| SeptemberSep | 24.1° | 23.0° | 24.9° | pleasant |
| OctoberOct | 21.6° | 20.4° | 22.7° | refreshing |
| NovemberNov | 18.8° | 17.8° | 19.8° | fresh |
| DecemberDec | 16.4° | 15.5° | 17.5° | cold |
Sunshine
Sunshine hours in Karystos
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.6 of 11.3 hours of daylight in Karystos, 58 % 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 Karystos: 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.
In October, Karystos has about 4 rainy days with 27 mm of rain in total.
UV index
UV index in Karystos
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 5 · 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 30 min
- Fair skin
- about 35 min
- Light brown skin
- about 50 min
- Olive skin
- about 65 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 Karystos
How breezy and how cloudy Karystos 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.
In October, the wind in Karystos typically peaks at 19 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Jul – Sep, Dec – Mar.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 38 % of the sky over Karystos: mostly sunny, with about 6.6 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 Karystos
How often the day gets hot in Karystos (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Karystos has about 2 hot days, with an average daytime high of 24 °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 Karystos
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Karystos 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.
Karystos has its best school-holiday weather during the summer holidays (score 95) and its weakest during the Christmas holidays (score 14).
- 41
Easter holidays
Mar – Apr
Fair
- 20 °C by day
- Sea 15 °C
- 7.5 h of sun a day
- 6 rainy days a month
Good for: Sightseeing & walks
- 82
May half-term
May – Jun
Excellent
- 27 °C by day
- Sea 19 °C
- 9.7 h of sun a day
- 3 rainy days a month
Good for: Sightseeing & walks
- 95
Summer holidays
Jul – Aug
ExcellentBest holidays
- 32 °C by day
- Sea 25 °C
- 11.2 h of sun a day
- 1 rainy day a month
Good for: Beach & swimming
- 77
October half-term
Oct
Good
- 24 °C by day
- Sea 22 °C
- 6.6 h of sun a day
- 4 rainy days a month
Good for: Beach & swimming, Sightseeing & walks
- 14
Christmas holidays
Dec – Jan
Poor
- 15 °C by day
- Sea 16 °C
- 3.3 h of sun a day
- 9 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 3 h 25 min
- Distance
- 2,450 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.
Good to know: Greece
- Currency
- Euro (EUR)
- Language
- Greek
- Sockets
- Type C, F · 230 V
- Traffic
- Drives on the right
- Dialling code
- +30
- Emergency number
- 112
UK plugs need a travel adapter
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Karystos compared
Put Karystos side by side with another destination.
Karystos vs Rafina
In October Rafina has the better holiday weather (score 84 vs 77). During the day Rafina is 1 °C warmer than Karystos. The sea is about equally warm. Rafina gets one hour less sunshine a day.
| in October | Karystos | Rafina |
|---|---|---|
| Holiday weather score | 77 | 84 |
| Daytime high | 24° | 25° |
| Sea | 22° | 22° |
| Sunshine | 7 h | 6 h |
| Rainy days | 4 | 4 |
| Best time | Jun – Sep | Sep – Oct |
Through the year
Best places in the country
Greece in October: the best places
In October, Karystos ranks 14 among the 31 nearest destinations in this country.
- Athens25°23°91
- 2Piraeus24°23°91
- 3Thebes23°85
- 4Rafina25°22°84
- 5Palaio Faliro25°23°84
- 6Elefsina25°23°84
- 7Salamis Island24°23°84
- 8Marathon25°22°83
- 14KarystosThis page24°22°77
Places nearby
Near Karystos
Other destinations close by.
Places with a similar climate
Places with a climate like Karystos
Destinations whose weather through the year is closest to Karystos's – good alternatives.
Frequently asked questions about Karystos
When is the best time to visit Karystos?
The best time to visit Karystos 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 Karystos?
The sea temperature in Karystos ranges from 14.7 °C in February to 25.2 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.
Can you swim in Karystos in October?
Yes. In October the sea averages 21.6 °C – refreshing for a swim.
What is the warmest month in Karystos?
July is the warmest month, with average highs of 32 °C and nights around 23 °C. January is the coolest month at 14 °C.
When does it rain most in Karystos?
The wettest month is December with 66 mm of precipitation. The driest month is July with 5 mm.
How many hours of sunshine does Karystos get?
Karystos gets around 2,700 hours of sunshine a year. The sunniest month is July with 11.8 hours a day; in December there are 3.1 hours a day.
What time zone is Karystos in?
Karystos is on UTC+2 in January and UTC+3 in July.
How long is the flight from London to Karystos?
A nonstop flight from London to Karystos takes about 3 h 25 min, for a straight-line distance of about 2,450 km.
Which school holidays are best for Karystos?
Karystos has its best school-holiday weather during the summer holidays (score 95) and its weakest during the Christmas holidays (score 14). Holiday ratings (0–100): Easter holidays 41, May half-term 82, summer holidays 95, October half-term 77, Christmas holidays 14.