December weather forecast
Patras, Greece

As the year draws close to its end, December ushers in the winter season in Patras. The weather becomes crisp and colder, offering a fresh perspective to the city. December watches the rainfall continue its elevated trend, reaching a substantial 116mm (4.57"). While representing the close of the year, December paves the way for the more severe winter months. With crisper air and shorter days, it demonstrates a stark contrast to the city's summer character, promoting a quieter, more tranquil side of Patras.

Temperature

December's arrival aligns with a minor decrease in average high-temperatures, from November's enjoyable 19.5°C (67.1°F) to a still comfortable 16.1°C (61°F). Patras's average low-temperature in the month of December is recorded at a frosty 7.6°C (45.7°F).

Rainfall

In Patras, in December, it is raining for 13.2 days, with typically 116mm (4.57") of accumulated precipitation. In Patras, during the entire year, the rain falls for 86 days and collects up to 663mm (26.1") of precipitation.

Sea temperature

In Patras, the average seawater temperature in December is 17.2°C (63°F).
Note: Swimming is not a pleasurable activity for most people when the water temperature is 17.2°C (63°F). Breathing control gets harder as the water temperature drops from 21°C (69.8°F) to 15°C (59°F).

Daylight

The month with the shortest days in Patras is December, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 07:31 and sunset at 17:13. On the last day of December, sunrise is at 07:49 and sunset at 17:22 EET.

Sunshine

January, February, November and December, with an average of 5h of sunshine, are months with the least sunshine.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Patras. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests this advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.