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Patras climate by month
What the weather is like
Patras has a hot-summer Mediterranean climate (Köppen Csa): dry, sunny summers and mild, wetter winters.
The warmest month is August, when afternoons average 32° and nights 22°. January is the coolest month, with highs of 12° and lows of 6°. The difference between the warmest and the coolest month is about 18°.
About 851 mm of precipitation falls in an average year. December is the wettest month (154 mm, 14 wet days) and July the driest (9 mm, 3 wet days). Cloud cover ranges from 5% in July to 41% in December.
The sea reaches about 26° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Athens, the capital, Patras is 2.7° cooler on a August afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 32° · August
- Coldest nights
- 6° · February
- Wettest month
- December
- Driest month
- July
- Clearest skies
- July · 5% cloud
- Warmest sea
- 26° · August
- Longest day
- 14 h 49 min
- Shortest day
- 9 h 31 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 12° | 13° | 16° | 20° | 24° | 29° | 31° | 32° | 28° | 24° | 18° | 14° |
| Average low | 6° | 6° | 7° | 10° | 14° | 18° | 21° | 22° | 19° | 15° | 11° | 8° |
| Precipitation | 108 mm | 101 mm | 79 mm | 58 mm | 34 mm | 12 mm | 9 mm | 10 mm | 40 mm | 88 mm | 158 mm | 154 mm |
| Wet days (≥1 mm) | 12.9 | 11.4 | 10.7 | 6.5 | 6 | 4.2 | 2.5 | 2.5 | 7 | 8.7 | 11.3 | 13.7 |
| Cloud cover | 38% | 36% | 34% | 30% | 24% | 11% | 5% | 6% | 16% | 28% | 37% | 41% |
| Sea temperature | 15° | 15° | 15° | 16° | 19° | 22° | 25° | 26° | 25° | 23° | 20° | 17° |
| Daylight | 9h 47 | 10h 47 | 11h 54 | 13h 11 | 14h 14 | 14h 49 | 14h 35 | 13h 40 | 12h 28 | 11h 15 | 10h 07 | 9h 31 |
| Saharan dust haze | – | – | ● | ● | ●● | ● | – | – | – | – | – | – |
| Month score | 36 | 44 | 62 | 85 | 86 | 75 | 67 | 66 | 70 | 79 | 68 | 39 |
Dust haze, monthly average 2015–2024: ● occasional, ●● frequent, ●●● very frequent