Climate averages 1991–2020
Piraeus weather
in January.
A cool, moderately wet month: the coolest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cool month in Piraeus: daytime highs average 12.0°C and nights cool to about 5.7°C. By daytime temperature it is the coolest month of the year.
Expect about 52 mm of rain on roughly 7 days, which makes January a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 51 min on an average January day.
The nearest other city in this atlas is Athens (9 km away). In January its highs average 11.9°C, about as warm as Piraeus, with 52 mm of rain.
Among the 11 cities listed in Greece, Piraeus ranks 3rd of 11 for the warmest January highs and joint 4th of 11 for the driest January (rainfall, lowest first). The mean January high of those 11 cities is 11.2°C; Piraeus is 0.7°C warmer than that mean.
From January to February, average highs rise by 1.1°C to 13.0°C, and monthly rainfall falls from 52 mm to 47 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Athens in JanuaryGreece · 9 kmHigh 11.9°C · Low 5.4°C · 52 mm rain
- Glyfáda in JanuaryGreece · 13 kmHigh 12.5°C · Low 7.0°C · 51 mm rain
- Khalándrion in JanuaryGreece · 16 kmHigh 11.4°C · Low 4.9°C · 52 mm rain
- Acharnés in JanuaryGreece · 17 kmHigh 11.7°C · Low 4.5°C · 52 mm rain
- Volos in JanuaryGreece · 170 kmHigh 10.8°C · Low 5.2°C · 101 mm rain
- Pátra in JanuaryGreece · 171 kmHigh 11.3°C · Low 4.5°C · 118 mm rain
- Lárisa in JanuaryGreece · 215 kmHigh 9.7°C · Low 2.1°C · 73 mm rain
- Ayvalık in JanuaryTurkey · 306 kmHigh 10.8°C · Low 7.0°C · 137 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.