Climate averages 1991–2020
Piraeus weather
in December.
A cool, moderately wet month: the 10th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Piraeus: daytime highs average 13.3°C and nights cool to about 7.5°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 58 mm of rain on roughly 8 days, which makes December a moderately wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 35 min on an average December day.
The nearest other city in this atlas is Athens (9 km away). In December its highs average 13.2°C, about as warm as Piraeus, with 58 mm of rain.
Among the 11 cities listed in Greece, Piraeus ranks 3rd of 11 for the warmest December highs and joint 1st of 11 for the driest December (rainfall, lowest first). The mean December high of those 11 cities is 12.4°C; Piraeus is 0.8°C warmer than that mean.
From December to January, average highs fall by 1.3°C to 12.0°C, and monthly rainfall falls from 58 mm to 52 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Piraeus climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.0°C5.7°C | 5.7°C | 52 | 7.3 | 9.910 h |
| February | 13.0°C6.1°C | 6.1°C | 47 | 7.2 | 10.811 h |
| March | 15.8°C7.9°C | 7.9°C | 49 | 6.4 | 11.912 h |
| April | 19.9°C11.0°C | 11.0°C | 29 | 5.4 | 13.213 h |
| May | 25.3°C15.7°C | 15.7°C | 23 | 4.9 | 14.214 h |
| June | 30.6°C20.3°C | 20.3°C | 11 | 2.5 | 14.715 h |
| July | 33.0°C22.8°C | 22.8°C | 6.4 | 1.3 | 14.515 h |
| August | 32.8°C22.8°C | 22.8°C | 4.4 | 1.1 | 13.614 h |
| September | 28.4°C19.6°C | 19.6°C | 15 | 2.5 | 12.512 h |
| October | 23.0°C15.6°C | 15.6°C | 27 | 3.8 | 11.211 h |
| November | 17.6°C11.3°C | 11.3°C | 45 | 6.6 | 10.210 h |
| December, selected | 13.3°C7.5°C | 7.5°C | 58 | 7.8 | 9.610 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Athens in DecemberGreece · 9 kmHigh 13.2°C · Low 7.3°C · 58 mm rain
- Glyfáda in DecemberGreece · 13 kmHigh 13.8°C · Low 8.8°C · 61 mm rain
- Khalándrion in DecemberGreece · 16 kmHigh 12.7°C · Low 6.8°C · 58 mm rain
- Acharnés in DecemberGreece · 17 kmHigh 13.0°C · Low 6.3°C · 58 mm rain
- Volos in DecemberGreece · 170 kmHigh 12.0°C · Low 6.9°C · 112 mm rain
- Pátra in DecemberGreece · 171 kmHigh 12.5°C · Low 6.2°C · 126 mm rain
- Lárisa in DecemberGreece · 215 kmHigh 10.7°C · Low 3.6°C · 83 mm rain
- Ayvalık in DecemberTurkey · 306 kmHigh 12.2°C · Low 8.7°C · 145 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Piraeus) is explained once on the Piraeus year overview and on the Sources, method and limits page.
Athens, Acharnés and Khalándrion lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.