Best time to visit Piraeus

The best time to visit Piraeus is March–May and September–November, judged on twenty years of weather records and the events worth going for.

Piraeus, Attica, Greece

°C

mm

−10°0°10°20°30°40°
0100200300400500
  • Average daily high and low
  • Precipitation
  • Good month
  • Best month
  • Made good or best by an event
Average daily high and low temperature, average precipitation and each month's verdict
MonthAverage daily highAverage daily lowPrecipitationVerdict
January13.1 °C / 56 °F6.1 °C / 43 °F45 mm / 1.8 ingood month
February14.2 °C / 58 °F6.8 °C / 44 °F49 mm / 1.9 ingood month
March16.9 °C / 62 °F8.6 °C / 47 °F42 mm / 1.7 inbest month
April21.1 °C / 70 °F11.4 °C / 53 °F29 mm / 1.1 inbest month
May25.9 °C / 79 °F15.5 °C / 60 °F22 mm / 0.9 inbest month
June31 °C / 88 °F20.3 °C / 69 °F19 mm / 0.7 ingood month
July33.6 °C / 92 °F23.2 °C / 74 °F6 mm / 0.2 inneither best nor good
August33.2 °C / 92 °F23.1 °C / 74 °F7 mm / 0.3 inneither best nor good
September29 °C / 84 °F19.4 °C / 67 °F17 mm / 0.7 inbest month
October23.5 °C / 74 °F15.2 °C / 59 °F32 mm / 1.2 inbest month
November19 °C / 66 °F11.6 °C / 53 °F36 mm / 1.4 inbest month
December14.7 °C / 58 °F8.1 °C / 47 °F53 mm / 2.1 ingood 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'.

  1. JJanuary: good
  2. FFebruary: good
  3. MMarch: best
  4. AApril: best
  5. MMay: best
  6. JJune: good
  7. JJuly: neither
  8. AAugust: neither
  9. SSeptember: best
  10. OOctober: best
  11. NNovember: best
  12. DDecember: good
Best
March–May, September–November
Good
June, December–February
Why these months
  • January · good

    In its favour: precipitation 45 mm / 1.8 in, share of daylight that is sunny 76%, days with heavy rain 1.1 days, wet days 7.8 days, average daily high 13.1 °C / 56 °F, average daily low 6.1 °C / 43 °F, relative humidity 74%.

    Against: feels like (high) 10.4 °C / 51 °F.

  • February · good

    In its favour: precipitation 49 mm / 1.9 in, share of daylight that is sunny 78%, days with heavy rain 1.4 days, wet days 7.8 days, average daily high 14.2 °C / 58 °F, average daily low 6.8 °C / 44 °F, relative humidity 73%.

    Against: feels like (high) 11.6 °C / 53 °F.

  • March · best

    In its favour: feels like (high) 14.7 °C / 58 °F, precipitation 42 mm / 1.7 in, share of daylight that is sunny 83%, average daily high 16.9 °C / 62 °F, days with heavy rain 1.1 days, wet days 6.8 days, relative humidity 67%, average daily low 8.6 °C / 47 °F.

  • April · best

    In its favour: feels like (high) 19.8 °C / 68 °F, average daily high 21.1 °C / 70 °F, precipitation 29 mm / 1.1 in, share of daylight that is sunny 89%, wet days 5.2 days, days with heavy rain 0.6 days, average daily low 11.4 °C / 53 °F, relative humidity 60%.

  • May · best

    In its favour: feels like (high) 25.7 °C / 78 °F, average daily high 25.9 °C / 79 °F, precipitation 22 mm / 0.9 in, share of daylight that is sunny 88%, wet days 5.1 days, days with heavy rain 0.3 days, average daily low 15.5 °C / 60 °F, relative humidity 56%.

  • June · good

    In its favour: precipitation 19 mm / 0.7 in, share of daylight that is sunny 94%, wet days 3.8 days, days with heavy rain 0.4 days, relative humidity 50%, average daily low 20.3 °C / 69 °F.

    Against: feels like (high) 31.7 °C / 89 °F, average daily high 31 °C / 88 °F.

  • September · best

    In its favour: feels like (high) 29 °C / 84 °F, precipitation 17 mm / 0.7 in, share of daylight that is sunny 92%, wet days 2.6 days, days with heavy rain 0.5 days, average daily high 29 °C / 84 °F, relative humidity 57%, average daily low 19.4 °C / 67 °F.

  • October · best

    In its favour: feels like (high) 22.6 °C / 73 °F, average daily high 23.5 °C / 74 °F, precipitation 32 mm / 1.2 in, share of daylight that is sunny 84%, wet days 4.1 days, days with heavy rain 0.9 days, average daily low 15.2 °C / 59 °F, relative humidity 67%.

  • November · best

    In its favour: feels like (high) 17.5 °C / 64 °F, average daily high 19 °C / 66 °F, precipitation 36 mm / 1.4 in, share of daylight that is sunny 81%, wet days 5.8 days, days with heavy rain 1.1 days, average daily low 11.6 °C / 53 °F, relative humidity 73%.

  • December · good

    In its favour: precipitation 53 mm / 2.1 in, share of daylight that is sunny 75%, feels like (high) 12.6 °C / 55 °F, days with heavy rain 1.6 days, average daily high 14.7 °C / 58 °F, wet days 7.4 days, average daily low 8.1 °C / 47 °F, relative humidity 75%.

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 Παρνασσού, Parnassos Ski Centre, 113 km away.

Weather averages

Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.

  JanFebMarAprMayJunJulAugSepOctNovDec
Feels like (high) 10.4 °C11.6 °C14.7 °C19.8 °C25.7 °C31.7 °C34.4 °C33.9 °C29 °C22.6 °C17.5 °C12.6 °C
Days with heavy rain 1.1 days1.4 days1.1 days0.6 days0.3 days0.4 days0.1 days0.1 days0.5 days0.9 days1.1 days1.6 days
Time rain usually falls 5 pm5 pm4 pm5 pm4 pm4 pm4 pm4 pm5 pm3 pm5 pm12 am
Sunshine per day 7.5 h8.4 h9.9 h11.7 h12.5 h13.9 h13.6 h12.9 h11.4 h9.4 h8.2 h7.2 h
Relative humidity 74%73%67%60%56%50%45%47%57%67%73%75%

Sea temperature

Averaged over a shorter period (2022–2025) than the twenty-year averages above.

  JanFebMarAprMayJunJulAugSepOctNovDec
Sea temperature 2022–202516.6 °C15.8 °C15.8 °C17.2 °C19.1 °C23.6 °C26.7 °C27.4 °C26.1 °C24 °C21.6 °C18.2 °C
Sea temperature (daily max) 2022–202516.7 °C15.9 °C16 °C17.4 °C19.5 °C24 °C27.1 °C27.6 °C26.3 °C24.2 °C21.7 °C18.2 °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.

  JanFebMarAprMayJunJulAugSepOctNovDec
Air pollution (PM2.5) 2022–202510 µg/m³10.5 µg/m³11.1 µg/m³11.4 µg/m³11.7 µg/m³12.4 µg/m³12.9 µg/m³9.6 µg/m³9.8 µg/m³9.1 µg/m³8.4 µg/m³8.9 µg/m³
Air pollution (PM2.5, daily peak) 2022–202516.2 µg/m³16.2 µg/m³17.5 µg/m³17.8 µg/m³17.8 µg/m³19.2 µg/m³19.9 µg/m³14.7 µg/m³15.2 µg/m³13.5 µg/m³13.7 µg/m³15.4 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.

World Heritage sites nearby

UNESCO World Heritage sites within 25 km, nearest first.

  • Parthenon

    8 km away

Other places in Greece

Compare places month by month on the travel calendar

Monthly averages over 2006–2025, unless stated otherwise.

Weather data by Open-Meteo.com (CC-BY 4.0), generated using Copernicus Climate Change Service information (ERA5). City data from GeoNames (CC-BY 4.0). Air quality from the Copernicus Atmosphere Monitoring Service (CAMS) and sea temperature from Météo-France / Copernicus Marine, both via Open-Meteo.com. Coastline from Natural Earth. Ski areas from OpenSkiMap.org, © OpenStreetMap contributors (ODbL) and Skimap.org. World Heritage sites from Wikidata (CC0), from the World Heritage List © UNESCO World Heritage Centre. Readership from Wikimedia pageview data (CC0). Destination classification derived from English Wikivoyage, © Wikivoyage contributors (CC BY-SA 4.0).