September weather forecast
Patras, Greece

The arrival of September signals a slight respite from the intense summer heat in Patras. Though still warm, the weather commences its subtle shift towards the cooler months. An increase in rainfall, reaching 28mm (1.1"), marks the beginnings of autumn. September in Patras is known for its balmy late summer days and clear nights. It remains an inviting time for those wishing to savour the waning warmth before the onset of autumn.

Temperature

Patras experiences a subtle adjustment in high-temperatures to a warm 28.2°C (82.8°F) with the onset of September, maintaining near parity with August's 30.9°C (87.6°F). September nights in Patras cool down to an average low-temperature of 17.2°C (63°F).

Rainfall

In Patras, Greece, during September, the rain falls for 3.6 days and regularly aggregates up to 28mm (1.1") of precipitation. Throughout the year, there are 86 rainfall days, and 663mm (26.1") of precipitation is accumulated.

Sea temperature

In Patras, the average seawater temperature in September is 25.5°C (77.9°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

The average length of the day in September in Patras is 12h and 26min.
On the first day of the month, sunrise is at 07:03 and sunset at 20:02. On the last day of September, sunrise is at 07:28 and sunset at 19:17 EEST.

Sunshine

In September, the average sunshine in Patras is 10h.

UV index

In Patras, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index of 7 during September leads to these instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Heed this! UV intensity is much stronger when reflected off sand and water.