September weather forecastDyuni, Bulgaria

Weather in September

As September arrives, a subtle transition from summer to autumn is noticeable. Even though the average temperature drops to 24°C (75.2°F), the weather remains comfortably warm. The sea temperature begins to drop gradually, marking the slow retreat of the swimmers. Yet, the decrease in rainfall and amicable weather maintains the attractiveness of outdoor activities. A softer sunlight accompanied by mild breezes characterize the pleasant September days.

Temperature

The onset of September entails a subtle temperature shift, as the average high-temperature eases from a warm 27°C (80.6°F) in August to a still moderately hot 24°C (75.2°F). An average temperature of 14°C (57.2°F) is recorded during the nights in September.

Rainfall

In Dyuni, in September, it is raining for 5 days, with typically 35mm (1.38") of accumulated precipitation. In Dyuni, during the entire year, the rain falls for 88 days and collects up to 568mm (22.36") of precipitation.

Sea temperature

In Dyuni, the average seawater temperature in September is 22°C (71.6°F).
Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 22°C (71.6°F).

Daylight

In Dyuni, the average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 06:34 and sunset at 19:43. On the last day of September, sunrise is at 07:05 and sunset at 18:52 EEST.

Sunshine

In Dyuni, the average sunshine in September is 8h.

UV index

In Dyuni, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index, 6 during September, leads to the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Heads up! UV intensity is amplified by reflections from water and sand.