Weather in Bulgaria for September 2025
So far, September 2025 in Bulgaria is slightly warmer than the historical average by 1.7 °C.
Expect cooler weather in the next days in Bulgaria with the forecast suggesting a temperature of 22.8 °C, lower than the historical average.
In general, the average temperature in Bulgaria at the beginning of September is 27.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21 °C by the end of September.
The climate of Bulgaria in September is notably wet, with an average of 13 rainy days, and a total of 48.6 mm of precipitation.
Is September a good time to visit Bulgaria? check out the best time to travel to Bulgaria page.
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Bulgaria Weather September
What’s the Weather Like in Bulgaria This September?
Temperatures trend during September in Bulgaria
September weather in Bulgaria day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 28° /12° | 0.2 mm | 7 | |
| 2 Sept. |  Sunny | 29° /12° | 0 mm | 7 | |
| 3 Sept. | Sunny | 31° /13° | 0 mm | 8 | |
| 4 Sept. |  Torrential rain shower | 26° /14° | 9.8 mm | 6 | |
| 5 Sept. | Sunny | 26° /13° | 0.4 mm | 6 | |
| 6 Sept. | Partly cloudy | 27° /12° | 0.9 mm | 7 | |
| 7 Sept. | Sunny | 27° /13° | 0.1 mm | 7 | |
| 8 Sept. | Sunny | 27° /12° | 0 mm | 7 | |
| 9 Sept. | Sunny | 28° /11° | 0 mm | 7 | |
| 10 Sept. | Sunny | 25° /11° | 2.6 mm | 6 | |
| 11 Sept. | Sunny | 24° /11° | 2.9 mm | 6 | |
| 12 Sept. | Sunny | 26° /11° | 1.4 mm | 7 | |
| 13 Sept. |  Patchy rain possible | 28° /12° | 0.2 mm | 7 | |
| 14 Sept. | Partly cloudy | 25° /11° | 1.7 mm | 6 | |
| 15 Sept. | Partly cloudy | 24° /10° | 0.8 mm | 6 | |
| 16 Sept. |  Patchy light rain with thunder | 23° /10° | 4.2 mm | 5 | |
| 17 Sept. | Patchy rain possible | 22° /10° | 1.6 mm | 6 | |
| 18 Sept. | Sunny | 22° /7° | 0 mm | 1.5 | |
| 19 Sept. | Sunny | 25° /8° | 0 mm | 1.5 | |
| 20 Sept. | Sunny | 27° /11° | 0 mm | 1.5 | |
| 21 Sept. | Sunny | 27° /11° | 0 mm | 1.8 | |
| 22 Sept. | Sunny | 29° /11° | 0 mm | 5 | |
| 23 Sept. | Sunny | 31° /13° | 0 mm | 6 | |
| 24 Sept. | Sunny | 31° /14° | 0 mm | 6 | |
| 25 Sept. | Patchy rain possible | 27° /14° | 0.1 mm | 4 | |
| 26 Sept. | Partly cloudy | 21° /13° | 0 mm | 5 | |
| 27 Sept. | Patchy rain possible | 13° /12° | 3.2 mm | 3 | |
| 28 Sept. | Patchy rain possible | 16° /11° | 1.6 mm | 3 | |
| 29 Sept. | Patchy rain possible | 20° /11° | 0.4 mm | 3 | |
| 30 Sept. | Patchy rain possible | 19° /12° | 4.5 mm | 3 | |
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Bulgaria weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Sunny | Sunny |
| Temperatures | 30°/15° | 24°/11° | 20°/7° |
| Rainfall | 41 mm | 49 mm | 25 mm |
| Wind | 14 km/h | 13.1 km/h | 10 km/h |
| Humidity | 45% | 56% | 55% |
| Rainy days | 11 days | 13 days | 6 days |
| Dry days | 20 days | 17 days | 25 days |
Planning a trip to Bulgaria? Discover the best time to visit
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
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
September rainfall patterns in Bulgaria
UV exposure in Bulgaria during September
Quick links
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.