AI-generatedPoros at a glance
- Best time
- Jun – Sep
- Warmest month
- Jul · 32°
- Warmest sea
- Aug · 26.1°
- Sunshine a year
- 2,790 h
- Rain a year
- 342 mm
- Climate
- Mediterranean
- Time zone
- UTC+2 / UTC+3
- Elevation
- 23 m
Climate in Poros
Poros 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 13 °C. With around 2,790 hours of sunshine a year, Poros is sunny; July is the sunniest month with 11.9 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Good
Best time to visit: June – September
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 19°
- Midday, 13:00: about 22°
- Afternoon, 16:00: about 23°
- Evening, 20:00: about 21°
- Night, 23:00: about 20°
07:3318:51
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 07:17–08:08 · evening 18:15–19:07
- Blue hour
- Morning 07:07–07:17 · evening 19:07–19:17
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.
What is the weather like in Poros in October?
In October, Poros is warm: daytime highs average 23 °C, and nights cool down to about 18 °C. The sea averages 23.0 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. Rain is rare: about 4 days bring 28 mm in total. All in all, October is a good month for a holiday in Poros.
More details for October
- Daylight
- 11 h 18 min07:33 – 18:51
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 2 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 36 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %65 %
- Seaweight 25 %86 %
- Sunshineweight 20 %55 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
Sea temperature in Poros
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 21.8 – 23.8 °C
Swimming season: Jun – Nov
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Poros ranges from 15.1 °C in February to 26.1 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to November.
The sea warms up slowly: it is warmest in August, while the air already peaks in July. 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 25.1 and 26.9 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 15.7° | 14.8° | 16.9° | cold |
| FebruaryFeb | 15.1° | 14.5° | 15.8° | cold |
| MarchMar | 15.3° | 14.6° | 16.0° | cold |
| AprilApr | 16.3° | 15.6° | 17.0° | cold |
| MayMay | 19.0° | 18.1° | 19.8° | fresh |
| JuneJun | 22.7° | 22.1° | 23.5° | refreshing |
| JulyJul | 25.4° | 24.6° | 26.4° | pleasant |
| AugustAug | 26.1° | 25.1° | 26.9° | warm |
| SeptemberSep | 25.1° | 24.1° | 26.0° | pleasant |
| OctoberOct | 23.0° | 21.8° | 23.8° | pleasant |
| NovemberNov | 20.5° | 19.4° | 21.5° | refreshing |
| DecemberDec | 17.8° | 16.5° | 19.0° | fresh |
Sunshine hours in Poros
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 6.3 of 11.3 hours of daylight in Poros, 56 % of the day.
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.
UV index in Poros
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 it, 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.
Rain in Poros: 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, Poros has about 4 rainy days with 28 mm of rain in total.
Wind and clouds in Poros
How breezy and how cloudy Poros 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 Poros typically peaks at 14 km/h during the day: Beaufort 3, light 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.
In October, cloud covers on average 36 % of the sky over Poros: mostly sunny, with about 6.3 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 and humidity in Poros
How often the day gets hot in Poros (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, Poros has about 0 hot days, with an average daytime high of 23 °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
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Poros
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (10+ muggy days)
PleasantOctober: nights around 18°. Ideal for sleeping, often with the window open. Muggy on about 2 days (dew point 18 °C or more).
The coolest nights are in January (9°), the warmest in August (25°). Tropical nights of 20 °C and more are the rule from June to September; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in May and from October to November. It is muggy (dew point 18 °C or more) on about 42 days a year, mostly from July to August.
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 | 21 | 13° | 9° | 15.7° | 4.6 h | 7 | 49 |
| FebruaryFeb | 25 | 14° | 9° | 15.1° | 5.5 h | 6 | 42 |
| MarchMar | 29 | 16° | 11° | 15.3° | 6.6 h | 6 | 45 |
| AprilApr | 38 | 19° | 13° | 16.3° | 8.2 h | 4 | 20 |
| MayMay | 76 | 24° | 17° | 19.0° | 9.2 h | 4 | 16 |
| JuneJun | 95 | 29° | 22° | 22.7° | 11.5 h | 2 | 8 |
| JulyJul | 96 | 32° | 25° | 25.4° | 11.9 h | 1 | 3 |
| AugustAug | 97 | 32° | 25° | 26.1° | 10.6 h | 1 | 8 |
| SeptemberSep | 98 | 28° | 22° | 25.1° | 8.4 h | 4 | 26 |
| OctoberOct | 75 | 23° | 18° | 23.0° | 6.3 h | 4 | 28 |
| NovemberNov | 36 | 19° | 15° | 20.5° | 4.8 h | 6 | 44 |
| DecemberDec | 22 | 15° | 11° | 17.8° | 4.1 h | 8 | 53 |
Climate averages 1996–2025, 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
37.50° N, 23.45° E · 23 m · Europe/Athens
Best time to visit Poros
The best time to visit Poros is from June to September. For a beach holiday with the sea above 21 °C, go from June to September. For sightseeing, day trips and hiking, conditions are most comfortable from March to May and from September to November. The wettest month is December with 53 mm of precipitation.
Poros through the seasons
How the weather changes over the seasons, with averages for each.
Poros in spring
Mar – May
Fair
- 16–24 °C by day
- Sea 17 °C
- 8 h of sun a day
- 14 rainy days in all
Poros in summer
Jun – Aug
Excellent
- 29–32 °C by day
- Sea 25 °C
- 11 h of sun a day
- 4 rainy days in all
Poros in autumn
Sep – Nov
Good
- 19–28 °C by day
- Sea 23 °C
- 7 h of sun a day
- 13 rainy days in all
Poros in winter
Dec – Feb
Poor
- 13–15 °C by day
- Sea 16 °C
- 5 h of sun a day
- 21 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Poros for you.
Your best months: June, August – September
Based on the climate averages; tap a month to see its details.
Compare two months in Poros
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 Poros: score 98 against 75. In September, days are 5 °C warmer than in October. The sea is 2 °C warmer in September. The sun shines 2 hours longer a day in September.
| Month | October | September |
|---|---|---|
| Weather score | 75 | 98better |
| Day high | 23° | 28° |
| Night low | 18° | 22° |
| Sea | 23.0° | 25.1° |
| Sunshine | 6.3 h | 8.4 hbetter |
| Rainy days | 4 | 4 |
| Rainfall | 28 mm | 26 mm |
| Muggy days | 2better | 8 |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
Jun – Sep
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Mar – May, Sep – Nov
15–28 °C and not too much rain
Poros month by month
The typical weather for every month at a glance.
21January13° · Sea 16° · 5 h
In January, Poros is cool: daytime highs average 13 °C, and nights cool down to about 9 °C. The sea averages 15.7 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain falls on about 7 days, adding up to 49 mm. All in all, January is not an ideal month for a holiday in Poros.
Poros in January25February14° · Sea 15° · 6 h
In February, Poros is cool: daytime highs average 14 °C, and nights cool down to about 9 °C. The sea averages 15.1 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain falls on about 6 days, adding up to 42 mm. All in all, February is not an ideal month for a holiday in Poros.
Poros in February29March16° · Sea 15° · 7 h
In March, Poros is cool: daytime highs average 16 °C, and nights cool down to about 11 °C. The sea averages 15.3 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 6 days, adding up to 45 mm. All in all, March is not an ideal month for a holiday in Poros.
Poros in March38April19° · Sea 16° · 8 h
In April, Poros is mild: daytime highs average 19 °C, and nights cool down to about 13 °C. The sea averages 16.3 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain is rare: about 4 days bring 20 mm in total. All in all, April is not an ideal month for a holiday in Poros.
Poros in April76May24° · Sea 19° · 9 h
In May, Poros is warm: daytime highs average 24 °C, and nights cool down to about 17 °C. The sea averages 19.0 °C – bracing, so a wetsuit helps for longer swims. With around 9 hours of sunshine a day, there is plenty of sun. Rain is rare: about 4 days bring 16 mm in total. All in all, May is a good month for a holiday in Poros.
Poros in May95June29° · Sea 23° · 12 h
In June, Poros is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. The sea averages 22.7 °C – refreshing for a swim. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 11 days the thermometer climbs to 30 °C or more. All in all, June is an excellent month for a holiday in Poros.
Poros in June96July32° · Sea 25° · 12 h
In July, Poros is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 25.4 °C – pleasant for swimming. With around 12 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 Poros.
Poros in July97August32° · Sea 26° · 11 h
In August, Poros is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 26.1 °C – lovely and warm for swimming. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 26 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Poros.
Poros in August98September28° · Sea 25° · 8 h
In September, Poros is hot: daytime highs average 28 °C, and even at night it stays warm at around 22 °C. The sea averages 25.1 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain is rare: about 4 days bring 26 mm in total. On about 6 days the thermometer climbs to 30 °C or more. All in all, September is an excellent month for a holiday in Poros.
Poros in September75October23° · Sea 23° · 6 h
In October, Poros is warm: daytime highs average 23 °C, and nights cool down to about 18 °C. The sea averages 23.0 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. Rain is rare: about 4 days bring 28 mm in total. All in all, October is a good month for a holiday in Poros.
Poros in October36November19° · Sea 21° · 5 h
In November, Poros is mild: daytime highs average 19 °C, and nights cool down to about 15 °C. The sea averages 20.5 °C – refreshing for a swim. Expect around 5 hours of sunshine a day. Rain falls on about 6 days, adding up to 44 mm. All in all, November is not an ideal month for a holiday in Poros.
Poros in November22December15° · Sea 18° · 4 h
In December, Poros is cool: daytime highs average 15 °C, and nights cool down to about 11 °C. The sea averages 17.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 4 hours of sunshine a day. Rain falls on about 8 days, adding up to 53 mm. All in all, December is not an ideal month for a holiday in Poros.
Poros in DecemberPoros compared
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Poros vs. Ýdra
In October the holiday weather in Poros and Ýdra is about equally good (score 75 vs. 74). During the day it is about as warm in Ýdra as in Poros. The sea is about equally warm.
| in October | Poros | Ýdra |
|---|---|---|
| Holiday score | 75 | 74 |
| Daytime high | 23° | 23° |
| Sea | 23° | 23° |
| Sunshine | 6 h | 6 h |
| Rainy days | 4 | 4 |
| Best time | Jun – Sep | Jun – Sep |
Through the year
Greece in October: the best places
In October, Poros ranks 13 among the 31 nearest destinations in this country.
- Piraeus23°23°91
- 2Athens23°23°91
- 3Mycenae23°90
- 4Sparta24°88
- 5Thebes22°84
- 6Mystras21°83
- 7Olympia22°80
- 8Patras21°23°80
- 13PorosThis page23°23°75
Planning a trip to Poros
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Poros 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.
Poros has its best school-holiday weather during the summer holidays (score 97) and its weakest during the Christmas holidays (score 22).
- 35
Easter holidays
Mar – Apr
Poor
- 18 °C by day
- Sea 16 °C
- 7.7 h of sun a day
- 5 rainy days a month
Good for: Sightseeing & walks
- 80
May half-term
May – Jun
Excellent
- 25 °C by day
- Sea 20 °C
- 9.7 h of sun a day
- 3 rainy days a month
Good for: Sightseeing & walks
- 97
Summer holidays
Jul – Aug
ExcellentBest holidays
- 32 °C by day
- Sea 26 °C
- 11.1 h of sun a day
- 1 rainy day a month
Good for: Beach & swimming
- 75
October half-term
Oct
Good
- 23 °C by day
- Sea 23 °C
- 6.3 h of sun a day
- 4 rainy days a month
Good for: Sightseeing & walks
- 22
Christmas holidays
Dec – Jan
Poor
- 14 °C by day
- Sea 17 °C
- 4.4 h of sun a day
- 7 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 3 h 25 min
- Distance
- 2,430 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.
Frequently asked questions about Poros
When is the best time to visit Poros?
The best time to visit Poros 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 Poros?
The sea temperature in Poros ranges from 15.1 °C in February to 26.1 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to November.
Can you swim in Poros in October?
Yes. In October the sea averages 23.0 °C – pleasant for swimming.
What is the warmest month in Poros?
July is the warmest month, with average highs of 32 °C and nights around 25 °C. January is the coolest month at 13 °C.
When does it rain most in Poros?
The wettest month is December with 53 mm of precipitation. The driest month is July with 3 mm.
How many hours of sunshine does Poros get?
Poros gets around 2,790 hours of sunshine a year. The sunniest month is July with 11.9 hours a day; in December there are 4.1 hours a day.
What time zone is Poros in?
Poros uses the time zone Europe/Athens: UTC+2 in January and UTC+3 in July.
How long is the flight from London to Poros?
A nonstop flight from London to Poros takes about 3 h 25 min, for a straight-line distance of about 2,430 km.
Which school holidays are best for Poros?
Poros has its best school-holiday weather during the summer holidays (score 97) and its weakest during the Christmas holidays (score 22). Holiday ratings (0–100): Easter holidays 35, May half-term 80, Summer holidays 97, October half-term 75, Christmas holidays 22.
Near Poros
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