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Olbia in September: Weather, Average temperature and Climate

Take a look at past year’s weather for Olbia in September and see if it is worth visiting.
Check flight prices to Olbia on Avionero:
September

Weather in Olbia in September 2025

Good Weather
Warm
☀️
Sunny
Are you considering a trip to Olbia in September? Well, the weather is usually on your side with an average maximum temperature of +81°F and about 14 sunny days. Just keep in mind that there may be some rain, with an average of 10 rainy days and 38 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+81°F
Avg. max. temperature
+52°F
Min.
+95°F
Max.
38 mm
Total precipitation
70%
Avg. humidity
2 m/s
Avg. wind
14 ☀️
Sunny Days
4 ⛅️
Cloudy
10 🌦
Rainy
Our opinion: Olbia has good weather in September.

Average temperature in Olbia in September

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

The temperature in September is +84°F on average, with a range between a maximum of +90°F during the day and a minimum of +63°F at night.

The average maximum temperature goes up 7% by the end of the month, compared with the beginning of the month, from +82°F to +84°F.

Is Olbia warm or cold in September?

Olbia is typically warm in September.

Maximum temperatures go down compared to the previous month from +86°F to +81°F. The minimum temperature also goes down from +70°F to +64°F.

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

September is one of the warmest months in Olbia, here is the comparison with other months:

Climate in Olbia in September

Olbia weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+86°F+81°F+73°F
Min. temperature
+57°F+52°F+43°F
Max. temperature
+100°F+95°F+88°F
Rainfall
17 mm38 mm54 mm
Wind
2 m/s2 m/s2 m/s
Humidity
63%70%76%
Air pressure
1014 HPa1015 HPa1016 HPa
Sunny days
211410
Cloudy days
248
Rainy days
61011
Snowy days
000

September typically has worse weather conditions compared to August. It’s getting colder in September. From +86°F in the day, the average maximum temperature lowers to +81°F. Prepare for more rain. Average rainfall goes from 17 mm to 38 mm. Humidity rises from 63% to 70%. The average wind speed doesn’t change much during September, staying around 2 m/s. The days becoming less sunny, going from 21 sunny days in August to 14 in September.

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

Wind

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

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

Rain

Amount of rainfall in mm during September in Olbia based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in September stands at 17%, leading to total precipitation of around 12 mm. The maximum amount of rainfall per day is around 5 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:
Olbia wettest month is November, where a typical day has a 47% chance of precipitation and 70 mm of rainfall per day. July, on the other hand, is the driest month with a mere 13% chance of precipitation and 12 mm of rainfall per day.

How was the weather last September in Olbia?

This is the weather in Olbia in September 2023:
1 September
☀️
+82°F
2 September
☁️
+84°F
3 September
☀️
+87°F
4 September
☀️
+87°F
5 September
☀️
+82°F
6 September
☀️
+84°F
7 September
☀️
+85°F
8 September
☀️
+85°F
9 September
☀️
+88°F
10 September
☀️
+87°F
11 September
☀️
+88°F
12 September
☀️
+89°F
13 September
☀️
+87°F
14 September
☀️
+85°F
15 September
☀️
+85°F
16 September
☀️
+87°F
17 September
☀️
+89°F
18 September
☁️
+88°F
19 September
☀️
+90°F
20 September
☀️
+84°F
21 September
☀️
+88°F
22 September
🌧️
+86°F
23 September
☀️
+76°F
24 September
☀️
+80°F
25 September
☀️
+77°F
26 September
☀️
+81°F
27 September
☀️
+83°F
28 September
☀️
+84°F
29 September
☀️
+84°F
30 September
☀️
+84°F
In September 2023 Olbia had 27 sunny days, 2 cloudy days, and 1 rainy days. The average maximum temperature was +84°F, with an absolute maximum of +90°F and a minimum of +77°F. The average humidity was 73%, with a maximum of 100% and a minimum of 45%. 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 Olbia climate has changed over the last 43 years.

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

The average temperature was the lowest in 1980 (+67°F) and the highest in 2022 (+74°F). The driest year was 1987 with only 324 mm of rainfall, and the wettest year was 2018 with 1032 mm.

FAQ

Frequently asked questions about the weather in Olbia in September:

Is September a good time to visit Olbia?

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

Can you sunbathe in Olbia in September?

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

Is Olbia rainy in September?

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

Is it sunny in Olbia in September?

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

Other cities in Italy

Check out the weather for other cities in Italy.

Monthly weather in Olbia

Source of the data

For this page, we’ve looked at the typical weather in Olbia, 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.