Piraeus in Fall
In fall (September, October and November), Piraeus sees average daytime highs around 24°C and overnight lows near 15°C, with 87 mm of rain over about 13 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 31°C in early September to 16°C by late November. The sky is clear or mostly clear about 56% of the time across fall, and the air most often feels dry.
Fall is Piraeus's best season of the year to visit on our travel score. For the whole year in context, see Piraeus's year-round climate.
- Avg daytime high
- 24°C
- 2nd-warmest season
- Avg overnight low
- 15°C
- Rainfall
- 87 mm
- 13 wet days
- Avg wind
- 10 km/h
- Travel score
- 7.2
- best season of the year
- Months
- Sep · Oct · Nov
Temperature in Piraeus in Fall
Over the season highs ease from about 31°C in early September to 16°C by late November.
A typical fall day in Piraeus reaches about 24°C and drops to 15°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Piraeus
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Piraeus weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 13° / 6° | 52 | 7.3 | 0.6 | 9.7 | 3.7 |
| Feb | 14° / 6° | 47 | 7.2 | 0.6 | 10.5 | 4.2 |
| Mar | 16° / 8° | 49 | 6.4 | 0.2 | 11.7 | 5.8 |
| Apr | 21° / 11° | 29 | 5.4 | 0 | 13 | 7.3 |
| May | 26° / 15° | 23 | 4.9 | 0 | 14 | 7.9 |
| Jun | 31° / 20° | 11 | 2.5 | 0 | 14.6 | 5.8 |
| Jul | 33° / 22° | 6 | 1.3 | 0 | 14.4 | 4.7 |
| Aug | 33° / 22° | 4 | 1.1 | 0 | 13.5 | 4.9 |
| Sep | 29° / 19° | 15 | 2.5 | 0 | 12.3 | 7.1 |
| Oct | 24° / 15° | 27 | 3.9 | 0 | 11 | 8.1 |
| Nov | 18° / 11° | 45 | 6.6 | 0 | 9.9 | 6.4 |
| Dec | 14° / 7° | 58 | 7.8 | 0.4 | 9.4 | 4.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 56% of the time across fall.
Chance of precipitation in Fall
Piraeus gets around 87 mm of rain over 13 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 10 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 54 min in early September to 9 h 36 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.8 kWh/m².
Is fall a good time to visit Piraeus?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is one of the better times to visit Piraeus for general sightseeing.
What to pack for Piraeus in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Piraeus sees daytime highs around 24°C and nights near 15°C. Pack light clothes. Worth having: sun protection. About 13 days see rain.
Sea temperature near Piraeus in Fall
The nearest coast averages about 23°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 26°C and coldest in February near 15°C.
It's comfortable for a long swim from May 28 to Nov 16 — about 5.7 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 15 | 15 | 16 | 19 | 22 | 25 | 26 | 25 | 23 | 20 | 17 |
| Comfort | Cool | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Refreshing | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Cool |
| Feb | 15 | Bracing |
| Mar | 15 | Bracing |
| Apr | 16 | Cool |
| May | 19 | Cool |
| Jun | 22 | Refreshing |
| Jul | 25 | Warm |
| Aug | 26 | Warm |
| Sep | 25 | Warm |
| Oct | 23 | Refreshing |
| Nov | 20 | Refreshing |
| Dec | 17 | Cool |
UV index in Piraeus in Fall
Clear-sky midday UV across fall averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Piraeus peaks around July 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 7 | 7 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| Level | Low | Moderate | Moderate | Very high | High | Very high | Very high | Very high | Very high | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | Very high |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 7 | Very high |
| Oct | 5 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Piraeus in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Piraeus is worst in August — around 19 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 7 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 10 | 12 | 15 | 14 | 13 | 11 | 14 | 19 | 9 | 9 | 9 | 7 |
| Level | Good | Good | Moderate | Moderate | Moderate | Good | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 12 | Good |
| Mar | 15 | Moderate |
| Apr | 14 | Moderate |
| May | 13 | Moderate |
| Jun | 11 | Good |
| Jul | 14 | Moderate |
| Aug | 19 | Moderate |
| Sep | 9 | Good |
| Oct | 9 | Good |
| Nov | 9 | Good |
| Dec | 7 | Good |
Where is Piraeus?
Piraeus sits at 37.9°N, 23.6°E, 29 m above sea level, in Greece. The nearest listed city is Níkaia, 3.0 km away.
Topography around Piraeus
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Piraeus.
Within 3 km, the terrain around Piraeus has only modest variations in elevation — a maximum elevation change of 119 m around an average of 13 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,025 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,724 m.
The land around Piraeus is covered by artificial surfaces (55%) and water (40%) within 3 km, water (43%) and artificial surfaces (31%) within 16 km, and water (50%) and trees (21%) within 80 km.
Greece travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $26,948
- 2025
- Happiness
- 5.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 0.8
- per 100k, 2023
- Road deaths
- 8.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- High
- EF EPI 592
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Piraeus (37.942°, 23.6462°, elevation 29 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.