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Weather in Bulgaria for September 2025

Your guide to Bulgaria weather in September - trends and predictions
  • In general, the average temperature in Bulgaria at the beginning of September is 27 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.6 °C by the end of September.

  • The climate of Bulgaria in September is notably wet, with an average of 11 rainy days.

  • Is September a good time to visit Bulgaria? check out the best time to travel to Bulgaria page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/12°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
56 %
Avg humidity

Bulgaria in September average weather

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Temperatures trend during September in Bulgaria

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
28° /13° 0.2 mm 7
2 Sept. Sunny
Sunny
29° /13° 0 mm 7
3 Sept. Sunny
Sunny
30° /13° 0 mm 8
4 Sept. Torrential rain shower
Torrential rain shower
24° /14° 14.7 mm 6
5 Sept. Overcast
Overcast
25° /13° 0.6 mm 6
6 Sept. Partly cloudy
Partly cloudy
27° /12° 1.3 mm 7
7 Sept. Sunny
Sunny
26° /14° 0.2 mm 7
8 Sept. Sunny
Sunny
26° /12° 0 mm 7
9 Sept. Sunny
Sunny
27° /11° 0 mm 7
10 Sept. Sunny
Sunny
22° /11° 3.9 mm 6
11 Sept. Sunny
Sunny
21° /10° 4 mm 6
12 Sept. Sunny
Sunny
27° /9° 0 mm 7
13 Sept. Sunny
Sunny
29° /11° 0.3 mm 7
14 Sept. Partly cloudy
Partly cloudy
24° /10° 1.9 mm 6
15 Sept. Partly cloudy
Partly cloudy
23° /10° 0.6 mm 6
16 Sept. Patchy light rain with thunder
Patchy light rain with thunder
20° /9° 6.3 mm 5
17 Sept. Patchy rain possible
Patchy rain possible
22° /10° 1.6 mm 6
18 Sept. Partly cloudy
Partly cloudy
21° /11° 0.5 mm 5
19 Sept. Patchy rain possible
Patchy rain possible
21° /9° 1.7 mm 5
20 Sept. Patchy rain possible
Patchy rain possible
22° /10° 3.3 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
23° /11° 1.2 mm 6
22 Sept. Patchy rain possible
Patchy rain possible
26° /10° 0.3 mm 6
23 Sept. Sunny
Sunny
28° /11° 0 mm 7
24 Sept. Patchy rain possible
Patchy rain possible
27° /12° 1.2 mm 6
25 Sept. Light rain shower
Light rain shower
23° /12° 2.7 mm 6
26 Sept. Overcast
Overcast
25° /12° 0.1 mm 6
27 Sept. Partly cloudy
Partly cloudy
25° /12° 0 mm 7
28 Sept. Sunny
Sunny
26° /11° 0 mm 7
29 Sept. Partly cloudy
Partly cloudy
21° /9° 1.2 mm 5
30 Sept. Sunny
Sunny
18° /8° 0.7 mm 5
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Important Notice
Our weather forecast for Bulgaria in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Bulgaria forecast closer to your planned date for the most up-to-date weather information.

Guide for Bulgaria in September

In Bulgaria, September marks the transition from summer to autumn, bringing about a noticeable change in the weather. At the beginning of the month, the weather in Bulgaria is generally warm and pleasant, with temperatures ranging from 20° to 25°.

The coastal areas, such as Varna and Burgas, experience milder temperatures due to the influence of the Black Sea, making it an ideal time for beachgoers to enjoy the last days of summer.

As the month progresses, the weather gradually begins to cool down, especially in the mountainous regions like Sofia and Plovdiv. By the end of September, temperatures in these areas can drop to around 12° to 17°, signaling the arrival of autumn.

Visitors can expect to see the landscape transform as the leaves start to change color, creating a picturesque setting for outdoor activities and sightseeing.

Overall, September in Bulgaria offers a diverse range of weather conditions, from lingering summer warmth to the onset of autumnal chill.

Travelers should be prepared for varying temperatures depending on the region they plan to visit, but can generally expect pleasant weather for exploring the country's rich cultural and natural attractions.

Bulgaria in September - FAQ

Is September a good time to visit Bulgaria?
Yes, September is a good time to traveling to Bulgaria, read more about the best time to visit Bulgaria.
What are the expected maximum and minimum temperatures in Bulgaria during September?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Bulgaria during September?
Moderate rainfall is anticipated in Bulgaria during September, with a total of 58.2 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Bulgaria during September?
The average wind speed in Bulgaria during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Bulgaria in September?

As you prepare for your trip to Bulgaria in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Bulgaria, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days
Regions in Bulgaria
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Location coordinates Where is Bulgaria?

Get accurate weather forecasts for Bulgaria, located at latitude 42.698 and longitude 23.324. Stay updated with localized weather information tailored for Bulgaria.

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