September weather forecast
Obzor, Bulgaria

September sees the onset of a cooling trend in Obzor, marking the beginning of autumn. Sea temperatures begin to fall but remain enjoyable for swimming. Rainfall amounts increase in conjunction with the number of rainy days. Sunlight hours wane further, and the UV index decreases, reflecting the receding sun's intensity.

Temperature

The onset of September results in a small decrease in the average high-temperature, moderately receding from a warm 27°C (80.6°F) in August to a still moderately hot 23°C (73.4°F). The temperature dips to an average of 14°C (57.2°F) during September nights.

Rainfall

In Obzor, during September, the rain falls for 4 days and regularly aggregates up to 36mm (1.42") of precipitation. Throughout the year, there are 79 rainfall days, and 557mm (21.93") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature in Obzor is 22.8°C (73°F).
Note: The cold tolerance of an individual, along with sunshine, wind, and the temperature of the environment, affects the enjoyment of swimming in 22.8°C (73°F) waters. (Olympic swimmers participate in waters ranging from 25°C (77°F) to 28°C (82.4°F).)

Daylight

In September, the average length of the day is 12h and 29min.
On the first day of the month, sunrise is at 06:33 and sunset at 19:43. On the last day of September, in Obzor, sunrise is at 07:05 and sunset at 18:51 EEST.

Sunshine

In September, the average sunshine is 8h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Warning! The Sun's UV rays intensify with reflections from sand and water.