September weather forecast
Varna, Bulgaria

As September rolls in, the summer gradually starts to wind down, paving the way for the crisp fall weather. The city sees an average drop in daytime temperatures to a comfortable 23.9°C (75°F). The sea remains warm, and while the sunny spells are shorter, they remain strong enough for beach activities. It is during this month that the city starts to calm with less tourist rush. The blend of summer’s end and the onset of autumn add a unique charm to the city.

Temperature

September marks a gentle change in average high-temperature, declining from August's 27.9°C (82.2°F) to a still moderately hot 23.9°C (75°F). Throughout the month of September, the average temperature in Varna, Bulgaria, dips to a mild 13.5°C (56.3°F) at night.

Humidity

In September, the average relative humidity is 73.1%.

Rainfall

In September, in Varna, the rain falls for 6.5 days. Throughout September, 44mm (1.73") of precipitation is accumulated. In Varna, during the entire year, the rain falls for 103.6 days and collects up to 540mm (21.26") of precipitation.

Sea temperature

In Varna, Bulgaria, in September, the average water temperature is 22.7°C (72.9°F).
Note: Consideration of an individual's cold resistance, combined with conditions like sunshine, wind, and temperature, suggests that swimming in 22.7°C (72.9°F) water can be delightful. (Olympic swimming is usually in 25°C (77°F) to 28°C (82.4°F) water.)

Daylight

The average length of the day in September in Varna is 12h and 30min.
On the first day of the month, sunrise is at 06:33 and sunset at 19:43. On the last day of September, in Varna, sunrise is at 07:05 and sunset at 18:51 EEST.

Sunshine

In September, the average sunshine in Varna is 7.3h.

UV index

In September, the average daily maximum UV index in Varna is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 5 suggests this advice:
Guard yourself - Avoiding sunburn is suggested. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take note! Sand and water reflections strengthen the Sun's UV exposure.