Best time to visit Poros
The best time to visit Poros is March–May and September–November, judged on twenty years of weather records and the events worth going for.
Poros, Attica, Greece
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 13.6 °C / 56 °F | 10.7 °C / 51 °F | 43 mm / 1.7 in | good month |
| February | 13.9 °C / 57 °F | 10.8 °C / 51 °F | 47 mm / 1.8 in | good month |
| March | 15.5 °C / 60 °F | 12.1 °C / 54 °F | 35 mm / 1.4 in | best month |
| April | 18.1 °C / 65 °F | 14.5 °C / 58 °F | 18 mm / 0.7 in | best month |
| May | 21.9 °C / 71 °F | 18.1 °C / 65 °F | 11 mm / 0.4 in | best month |
| June | 26.5 °C / 80 °F | 22.6 °C / 73 °F | 6 mm / 0.3 in | good month |
| July | 29.4 °C / 85 °F | 25.5 °C / 78 °F | 2 mm / 0.1 in | good month |
| August | 29.7 °C / 85 °F | 26 °C / 79 °F | 5 mm / 0.2 in | good month |
| September | 26.7 °C / 80 °F | 23.2 °C / 74 °F | 25 mm / 1 in | best month |
| October | 22.5 °C / 73 °F | 19.4 °C / 67 °F | 33 mm / 1.3 in | best month |
| November | 19 °C / 66 °F | 16.1 °C / 61 °F | 37 mm / 1.5 in | best month |
| December | 15.4 °C / 60 °F | 12.7 °C / 55 °F | 54 mm / 2.1 in | good month |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: good
- FFebruary: good
- MMarch: best
- AApril: best
- MMay: best
- JJune: good
- JJuly: good
- AAugust: good
- SSeptember: best
- OOctober: best
- NNovember: best
- DDecember: good
- Best
- March–May, September–November
- Good
- June–August, December–February
Why these months
January · good
In its favour: precipitation 43 mm / 1.7 in, share of daylight that is sunny 77%, days with heavy rain 1.4 days, wet days 7.5 days, average daily high 13.6 °C / 56 °F, average daily low 10.7 °C / 51 °F, relative humidity 70%.
Against: feels like (high) 11 °C / 52 °F.
February · good
In its favour: precipitation 47 mm / 1.8 in, share of daylight that is sunny 79%, days with heavy rain 1.2 days, wet days 7.2 days, average daily high 13.9 °C / 57 °F, average daily low 10.8 °C / 51 °F, relative humidity 71%.
Against: feels like (high) 11.4 °C / 53 °F.
March · best
In its favour: precipitation 35 mm / 1.4 in, share of daylight that is sunny 84%, feels like (high) 13.8 °C / 57 °F, average daily high 15.5 °C / 60 °F, wet days 5.4 days, days with heavy rain 1 days, average daily low 12.1 °C / 54 °F, relative humidity 70%.
April · best
In its favour: feels like (high) 17.8 °C / 64 °F, average daily high 18.1 °C / 65 °F, precipitation 18 mm / 0.7 in, share of daylight that is sunny 89%, wet days 3.6 days, days with heavy rain 0.5 days, average daily low 14.5 °C / 58 °F, relative humidity 70%.
May · best
In its favour: feels like (high) 23.4 °C / 74 °F, average daily high 21.9 °C / 71 °F, precipitation 11 mm / 0.4 in, share of daylight that is sunny 88%, wet days 2.8 days, days with heavy rain 0.1 days, average daily low 18.1 °C / 65 °F, relative humidity 71%.
June · good
In its favour: precipitation 6 mm / 0.3 in, share of daylight that is sunny 94%, feels like (high) 29.7 °C / 85 °F, average daily high 26.5 °C / 80 °F, wet days 1.6 days, days with heavy rain 0.1 days, relative humidity 67%.
Against: average daily low 22.6 °C / 73 °F.
July · good
In its favour: precipitation 2 mm / 0.1 in, share of daylight that is sunny 94%, wet days 0.6 days, days with heavy rain 0 days, average daily high 29.4 °C / 85 °F, relative humidity 62%.
Against: feels like (high) 32.9 °C / 91 °F, average daily low 25.5 °C / 78 °F.
August · good
In its favour: precipitation 5 mm / 0.2 in, share of daylight that is sunny 95%, wet days 0.6 days, days with heavy rain 0.1 days, relative humidity 62%.
Against: feels like (high) 32.8 °C / 91 °F, average daily high 29.7 °C / 85 °F, average daily low 26 °C / 79 °F.
September · best
In its favour: feels like (high) 28.3 °C / 83 °F, precipitation 25 mm / 1 in, share of daylight that is sunny 92%, average daily high 26.7 °C / 80 °F, wet days 3.1 days, days with heavy rain 0.8 days, relative humidity 64%.
Against: average daily low 23.2 °C / 74 °F.
October · best
In its favour: feels like (high) 22.4 °C / 72 °F, average daily high 22.5 °C / 73 °F, precipitation 33 mm / 1.3 in, share of daylight that is sunny 85%, wet days 4 days, days with heavy rain 1.2 days, average daily low 19.4 °C / 67 °F, relative humidity 67%.
November · best
In its favour: feels like (high) 17.8 °C / 64 °F, average daily high 19 °C / 66 °F, precipitation 37 mm / 1.5 in, share of daylight that is sunny 82%, wet days 5.3 days, days with heavy rain 1.1 days, average daily low 16.1 °C / 61 °F, relative humidity 70%.
December · good
In its favour: precipitation 54 mm / 2.1 in, share of daylight that is sunny 76%, feels like (high) 13.3 °C / 56 °F, average daily high 15.4 °C / 60 °F, wet days 7.3 days, days with heavy rain 1.8 days, average daily low 12.7 °C / 55 °F, relative humidity 70%.
Beach and swimming
Hot, dry and sunny. Penalises the monsoon hard.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: good
- JJune: best
- JJuly: best
- AAugust: best
- SSeptember: best
- OOctober: good
- NNovember: neither
- DDecember: neither
- Best
- June–September
- Good
- May, October
Why these months
May · good
In its favour: precipitation 11 mm / 0.4 in, share of daylight that is sunny 88%, wet days 2.8 days, days with heavy rain 0.1 days, feels like (high) 23.4 °C / 74 °F, average daily low 18.1 °C / 65 °F, wind (daily max) 17 km/h / 11 mph.
Against: average daily high 21.9 °C / 71 °F.
June · best
In its favour: average daily high 26.5 °C / 80 °F, precipitation 6 mm / 0.3 in, share of daylight that is sunny 94%, feels like (high) 29.7 °C / 85 °F, wet days 1.6 days, days with heavy rain 0.1 days, average daily low 22.6 °C / 73 °F, wind (daily max) 18 km/h / 11 mph.
July · best
In its favour: average daily high 29.4 °C / 85 °F, precipitation 2 mm / 0.1 in, share of daylight that is sunny 94%, feels like (high) 32.9 °C / 91 °F, wet days 0.6 days, days with heavy rain 0 days, average daily low 25.5 °C / 78 °F, wind (daily max) 19 km/h / 12 mph.
August · best
In its favour: average daily high 29.7 °C / 85 °F, precipitation 5 mm / 0.2 in, share of daylight that is sunny 95%, feels like (high) 32.8 °C / 91 °F, wet days 0.6 days, days with heavy rain 0.1 days, average daily low 26 °C / 79 °F, wind (daily max) 20 km/h / 12 mph.
September · best
In its favour: average daily high 26.7 °C / 80 °F, precipitation 25 mm / 1 in, share of daylight that is sunny 92%, feels like (high) 28.3 °C / 83 °F, wet days 3.1 days, days with heavy rain 0.8 days, average daily low 23.2 °C / 74 °F, wind (daily max) 19 km/h / 12 mph.
October · good
In its favour: precipitation 33 mm / 1.3 in, share of daylight that is sunny 85%, wet days 4 days, days with heavy rain 1.2 days, average daily low 19.4 °C / 67 °F, wind (daily max) 20 km/h / 12 mph.
Against: average daily high 22.5 °C / 73 °F, feels like (high) 22.4 °C / 72 °F.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Χιονοδρομικό Κέντρο Καλαβρύτων, Kalavrita Ski Resort, 121 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 11 °C | 11.4 °C | 13.8 °C | 17.8 °C | 23.4 °C | 29.7 °C | 32.9 °C | 32.8 °C | 28.3 °C | 22.4 °C | 17.8 °C | 13.3 °C |
| Days with heavy rain | 1.4 days | 1.2 days | 1 days | 0.5 days | 0.1 days | 0.1 days | 0 days | 0.1 days | 0.8 days | 1.2 days | 1.1 days | 1.8 days |
| Time rain usually falls | 12 pm | 2 pm | 11 am | 4 pm | 6 pm | 6 pm | 6 pm | 5 pm | 8 pm | 12 pm | 10 am | 2 am |
| Sunshine per day | 7.7 h | 8.5 h | 10.1 h | 11.8 h | 12.5 h | 13.8 h | 13.6 h | 12.9 h | 11.4 h | 9.5 h | 8.3 h | 7.4 h |
| Relative humidity | 70% | 71% | 70% | 70% | 71% | 67% | 62% | 62% | 64% | 67% | 70% | 70% |
Sea temperature
Averaged over a shorter period (2022–2025) than the twenty-year averages above.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature 2022–2025 | 16.6 °C | 15.7 °C | 15.7 °C | 17.2 °C | 19.3 °C | 23.7 °C | 26.8 °C | 27.2 °C | 26 °C | 24 °C | 21.5 °C | 18.5 °C |
| Sea temperature (daily max) 2022–2025 | 16.7 °C | 15.8 °C | 16 °C | 17.5 °C | 19.7 °C | 24.3 °C | 27.3 °C | 27.5 °C | 26.2 °C | 24.1 °C | 21.6 °C | 18.6 °C |
- Very cold 10 °C or less
- Cold 10 to 15 °C
- Cool 15 to 20 °C
- Comfortable 20 to 25 °C
- Warm 25 to 28 °C
- Very warm over 28 °C
The words describe how the water feels to swim in. They are ours, not an official standard.
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 7.1 µg/m³ | 8.1 µg/m³ | 9.4 µg/m³ | 10.1 µg/m³ | 11.5 µg/m³ | 13.9 µg/m³ | 14 µg/m³ | 10 µg/m³ | 9.7 µg/m³ | 7.8 µg/m³ | 6.4 µg/m³ | 5.9 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 11.1 µg/m³ | 12.2 µg/m³ | 14.9 µg/m³ | 17.1 µg/m³ | 19 µg/m³ | 24.4 µg/m³ | 23.2 µg/m³ | 16.5 µg/m³ | 16.6 µg/m³ | 11.2 µg/m³ | 9.7 µg/m³ | 9.4 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.