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Sofia in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Sofia in September will be like? Take a look at our weather guide for Sofia, based on historical data.
Check flight prices to Sofia on Avionero:
September

Weather in Sofia in September 2024

Great Weather
Warm
☀️
Sunny
For those searching for an ideal September holiday with excellent weather, Sofia is a perfect choice. Average maximum temperatures are +73°F. Expect about 16 sunny days, making it the perfect place to enjoy the sunshine. It's worth noting that there may be some rainfall, with an average of 36 mm of precipitation over 4 rainy days. So, take your sunglasses, a beach towel, and great walking shoes, as it looks like amazing weather. Search flights in one click on Avionero.

Average weather

☀️
+73°F
Avg. max. temperature
+30°F
Min.
+117°F
Max.
36 mm
Total precipitation
66%
Avg. humidity
2 m/s
Avg. wind
16 ☀️
Sunny Days
10 ⛅️
Cloudy
4 🌦
Rainy
Our opinion: Sofia has great weather in September.

Average temperature in Sofia in September

Here are the expected maximum, average and minimum temperatures in Sofia for September based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in September is +73°F with a maximum of +90°F and a minimum of +36°F.

The average maximum temperature goes down 7% by the end of the month, compared with the beginning of the month, from +82°F to +79°F.

Is Sofia warm or cold in September?

Sofia is typically warm in September.

Maximum temperatures go down compared to the previous month from +82°F to +73°F. The minimum temperature also goes down from +59°F to +52°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

Take a look at how September is compared to other months in Sofia:

Climate in Sofia in September

Sofia weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+82°F+73°F+63°F
Min. temperature
+43°F+30°F+23°F
Max. temperature
+127°F+117°F+91°F
Rainfall
38 mm36 mm41 mm
Wind
2 m/s2 m/s2 m/s
Humidity
62%66%73%
Air pressure
1015 HPa1017 HPa1019 HPa
Sunny days
201613
Cloudy days
61014
Rainy days
544
Snowy days
000

September weather is still as great as in August. It’s getting colder in September. From +82°F in the day, the average maximum temperature lowers to +73°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 38 mm to 36 mm. Humidity rises from 62% to 66%. The average wind speed doesn’t change much during September, staying around 2 m/s. The days becoming less sunny, going from 20 sunny days in August to 16 in September.

Next month (October) brings a further decline in the weather.

Wind

Wind speed in Sofia in September based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Sofia is gradually increasing during September, going from 1 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Sofia based on historical data.
Last Year
Historical Data
Typically, there is a 37% chance of rain on an average day in September, with total rainfall of approximately 69 mm. The maximum amount of rainfall per day is around 24 mm, which is considered light rain. September is a pretty wet month with over 11 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Sofia wettest month is May, where a typical day has a 29% chance of precipitation and 73 mm of rainfall per day. January, on the other hand, is the driest month with a mere 6% chance of precipitation and 21 mm of rainfall per day.

How was the weather last September in Sofia?

This is the weather in Sofia in September 2023:
1 September
🌫️
+82°F
2 September
🌧️
+69°F
3 September
☁️
+71°F
4 September
☀️
+77°F
5 September
☁️
+74°F
6 September
☀️
+77°F
7 September
☀️
+79°F
8 September
☀️
+83°F
9 September
☀️
+81°F
10 September
☁️
+80°F
11 September
☁️
+78°F
12 September
☁️
+70°F
13 September
☁️
+71°F
14 September
☀️
+82°F
15 September
☀️
+90°F
16 September
☁️
+83°F
17 September
🌧️
+70°F
18 September
☀️
+59°F
19 September
☀️
+70°F
20 September
☀️
+62°F
21 September
☁️
+59°F
22 September
☁️
+60°F
23 September
☀️
+62°F
24 September
☀️
+69°F
25 September
☀️
+73°F
26 September
☁️
+78°F
27 September
🌧️
+73°F
28 September
🌫️
+74°F
29 September
☁️
+77°F
30 September
☀️
+79°F
In September 2023 Sofia had 14 sunny days, 11 cloudy days, and 3 rainy days. The average maximum temperature was +73°F, with an absolute maximum of +90°F and a minimum of +59°F. The average humidity was 69%, with a maximum of 100% and a minimum of 23%. The average wind speed was 2 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Sofia climate has changed over the last 43 years.

The climate in Sofia in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1996 (+71°F) and the highest in 1994 (+89°F). The driest year was 1980 with only 4 mm of rainfall, and the wettest year was 2014 with 131 mm.

FAQ

Frequently asked questions about the weather in Sofia in September:

Is September a good time to visit Sofia?

Yes, September is a great time to go to Sofia, the weather couldn’t be better. Be ready to get outside, explore and enjoy. Check what other months that are a good time to visit Sofia.

Can you sunbathe in Sofia in September?

September is warm in Sofia. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Sofia rainy in September?

Sofia is usually dry in September. Plan your packing around outdoor activities and exploring.

Is it sunny in Sofia in September?

The amount of sunny days in Sofia during September varies; prepare for a mix of clouds and sun.

Other cities in Bulgaria

Check out the weather for other cities in Bulgaria.

Monthly weather in Sofia

Source of the data

For this page, we’ve looked at the typical weather in Sofia, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.