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Brac in September: Weather, Average temperature and Climate

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

Weather in Brac in September 2025

Good Weather
Mild
☀️
Sunny
🌊
Comfortable water
Planning a trip to Brac in September? You are in luck! The weather is generally good, with an average maximum temperature of +70°F and approximately 14 sunny days. Just be prepared for some rain, as there are usually around 8 rainy days and 72 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+70°F
Avg. max. temperature
+46°F
Min.
+90°F
Max.
72 mm
Total precipitation
72%
Avg. humidity
3 m/s
Avg. wind
14 ☀️
Sunny Days
7 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: Brac has good weather in September.
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Average temperature in Brac in September

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

Going from a maximum of +73°F during the day to a minimum of +59°F during the night, the temperature in September averages around +70°F.

The average maximum temperature goes down 12% by the end of the month, compared with the beginning of the month, from +70°F to +68°F.

Is Brac warm or cold in September?

Brac is typically mild in September.

Maximum temperatures go down compared to the previous month from +77°F to +70°F. The minimum temperature also goes down from +66°F to +59°F.

Pack a light jacket as it will be warm in the day and cool in the evenings.

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

Water temperature in Brac in September

Water in Brac in September is Comfortable. It varies from +70°F to +80°F, with an average of +75°F. Note that the air temperature is lower than the water temperature, averaging around +70°F.

The water temperature in September is one of the warmest of the entire year:

The warmest water temperatures in Brac are reached in August, when the average sea temperature rises to +77°F. The coldest water temperatures are in February, with an average of +56°F.

Can you swim in Brac in September?

The water in Brac in September is pretty comfortable (+75°F in average). Ideal for swimming, especially in outdoor pools and open water. Suitable for recreational and casual swimmers.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Don’t forget a large beach towel or two for drying off.

Climate in Brac in September

Brac weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+77°F+70°F+63°F
Min. temperature
+52°F+46°F+36°F
Max. temperature
+99°F+90°F+77°F
Rainfall
32 mm72 mm112 mm
Wind
3 m/s3 m/s4 m/s
Avg. water temperature
+77°F+75°F+68°F
Humidity
73%72%72%
Air pressure
1012 HPa1014 HPa1016 HPa
Sunny days
211410
Cloudy days
578
Rainy days
5813
Snowy days
000

September typically has worse weather conditions compared to August. It’s getting colder in September. From +77°F in the day, the average maximum temperature lowers to +70°F. Prepare for more rain. Average rainfall goes from 32 mm to 72 mm. It feels drier, as humidity decreases from 73% to 72%. The average wind speed doesn’t change much during September, staying around 3 m/s. The days becoming less sunny, going from 21 sunny days in August to 14 in September.

October brings much the same weather, it remains good.

Wind

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

The average wind speed is 3 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Brac is gradually increasing during September, going from 2 m/s to 3 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Brac based on historical data.
Last Year
Historical Data
Typically, there is a 17% chance of rain on an average day in September, with total rainfall of approximately 25 mm. The maximum amount of rainfall per day is around 20 mm, which is considered light rain. On average, there are about 5 rainy days during September, so prepare to bring an umbrella.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Brac wettest month is November, where a typical day has a 53% chance of precipitation and 182 mm of rainfall per day. July, on the other hand, is the driest month with a mere 13% chance of precipitation and 15 mm of rainfall per day.

How was the weather last September in Brac?

This is the weather in Brac in September 2023:
1 September
☀️
+69°F
2 September
☀️
+71°F
3 September
☁️
+73°F
4 September
☀️
+70°F
5 September
☀️
+72°F
6 September
☀️
+72°F
7 September
☀️
+72°F
8 September
☀️
+72°F
9 September
☀️
+70°F
10 September
☀️
+70°F
11 September
☀️
+70°F
12 September
☀️
+69°F
13 September
☁️
+70°F
14 September
☁️
+69°F
15 September
☁️
+69°F
16 September
☀️
+67°F
17 September
☀️
+68°F
18 September
☀️
+69°F
19 September
☀️
+70°F
20 September
☁️
+69°F
21 September
☁️
+69°F
22 September
☁️
+70°F
23 September
☁️
+69°F
24 September
☁️
+65°F
25 September
☀️
+68°F
26 September
☀️
+71°F
27 September
☀️
+69°F
28 September
☀️
+68°F
29 September
☀️
+67°F
30 September
☀️
+68°F
In September 2023 Brac had 21 sunny days, 9 cloudy days, and 0 rainy days. The average maximum temperature was +70°F, with an absolute maximum of +73°F and a minimum of +64°F. The average humidity was 77%, with a maximum of 100% and a minimum of 46%. The average wind speed was 3 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

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

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

The average temperature was the lowest in 1980 (+55°F) and the highest in 2018 (+65°F). The driest year was 1989 with only 642 mm of rainfall, and the wettest year was 2010 with 1433 mm.

FAQ

Frequently asked questions about the weather in Brac in September:

Is September a good time to visit Brac?

September is a really good time to go to Brac. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Brac.

Can you sunbathe in Brac in September?

September has mild temperatures in Brac. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Can you swim in Brac in September?

Yes, the water temperature in Brac in September is considered moderate and enjoyable for most people, averaging around +75°F.

Is Brac rainy in September?

Brac is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Brac in September?

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

Other cities in Croatia

Check out the weather for other cities in Croatia.

Monthly weather in Brac

Source of the data

For this page, we’ve looked at the typical weather in Brac, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

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.