September weather forecast
Varna, Bulgaria

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The building of The Mother of God Cathedral in Varna, Bulgaria with buildings and mountain ranges in the distance
The building of The Mother of God Cathedral in Varna, Bulgaria with buildings and mountain ranges in the distance

Weather in September

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.

Frequently asked questions

What are the temperatures in Varna in September?

The high-temperature during September is 23.9°C (75°F) and the low-temperature is 13.5°C (56.3°F). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 30°C (86°F).

What is the average humidity in September in Varna?

The average relative humidity in September in Varna, Bulgaria, is 73.1%.

How many days does it rain in September in Varna?

In Varna, in September, during 6.5 rainfall days, 44mm (1.73") of precipitation is typically accumulated.

What is the water temperature in September in Varna?

In Varna, Bulgaria, in September, the average water temperature is 22.7°C (72.9°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 22.7°C (72.9°F) water.

How many hours of daylight does Varna have in September?

The average day length in September in Varna, Bulgaria, is 12h and 30min.

When are sunrise and sunset in September in Varna?

On the first day of September in Varna, Bulgaria, sunrise is at 06:33 and sunset at 19:43. On the last day of the month, sunrise is at 07:05 and sunset at 18:51 EEST.

How long on average sun shines in September in Varna?

The average sunshine duration in September in Varna, Bulgaria, is 7.3h.

What is the UV index reading in September in Varna?

In Varna, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Varna, Bulgaria

Average temperature in September - Varna, Bulgaria
  • Average high temperature in September: 23.9°C

The warmest month (with the highest average high temperature) is August (27.9°C).
The month with the lowest average high temperature is January (6.2°C).

  • Average low temperature in September: 13.5°C

The month with the highest average low temperature is July (17.2°C).
The coldest month (with the lowest average low temperature) is January (-1.7°C).

Average humidity in September
Varna, Bulgaria

Average humidity in September - Varna, Bulgaria
  • Average humidity in September: 73.1%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (69.4%).

Average rainfall in September
Varna, Bulgaria

Average rainfall in September - Varna, Bulgaria
  • Average rainfall in September: 44.1mm

The wettest month (with the highest rainfall) is June (57.6mm).
The driest month (with the least rainfall) is February (29.9mm).

Average rainfall days in September
Varna, Bulgaria

Average rainfall days in September - Varna, Bulgaria
  • Average rainfall days in September: 6.5 days

The month with the highest number of rainy days is January (13.5 days).
The month with the least rainy days is August (3.3 days).

Average sea temperature in September
Varna, Bulgaria

Average sea temperature in September - Varna, Bulgaria
  • Average sea temperature in September: 22.7°C

The best month for swimming (with the highest average sea temperature) is August (24.8°C).
The coldest month (with the lowest average sea temperature) is February (7.3°C).

Average daylight in September /
Average sunshine in September
Varna, Bulgaria

Average daylight in September / Average sunshine in September - Varna, Bulgaria
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 7h and 2min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).

Average UV index in September
Varna, Bulgaria

Average UV index in September - Varna, Bulgaria
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 9).
The months with the lowest UV index are January and December (UV index 1).

Varna, Bulgaria

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