Split Weather in September

September in Split brings high temperatures, with highs of 24°C (75°F) and nights dropping to 18°C (64°F). Rainfall is on the higher side this month, averaging around 106 mm (4.2 in), so keep a rain jacket handy.

Rainfall in Split in September

Historically, the month has about 10 days of rain, averaging 106 mm (4.2 in) in total. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Split in September

Split in September gets highs of 24°C (75°F) during the day and drops to 18°C (64°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 18°C (64°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Split in September

With approximately 244 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Split in September

September sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.

Average water temperature in September

At 22°C (72°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

Should you favor a climate that's both dry and comfortably warm, May, June, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit Croatia, check out our Split's climate page.

Split Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 24°C (75°F)  

Water Temperature 22°C (72°F)  

Chance of Rain 33%  

Precipitation 106 mm (4.2 in)  

Rainy days 10 days  

Humidity 58%  

Windspeed 2 m/s (4 knots)  

Sunshine 244 hours  

Percentage Sunshine 70%  

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Split typically drop from around 27°C (81°F) at the start of September to approximately 24°C (75°F) by the end. Nights are pleasant, with lows typically ranging from 15°C (59°F) to 19°C (66°F).

Average temperatures in September

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Daily Historical Precipitation

49-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

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Historical weather for Split in September

Browse day-by-day weather records for Split spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Split historical weather extremes in September

Our historical data for Split spans 1993 to 2025, revealing these weather extremes.

• The hottest September day on record in Split reached 35°C (95°F) (September 1, 2024).
• The coldest September day was on September 6, 2007, with a maximum of 15°C (59°F).
• The coldest night in September in Split was on September 30, 1995, with a minimum of 7°C (45°F).

What to Wear in Split in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. The water temperature sits at about 22°C (72°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Split in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Croatia, check out our Split's climate page.

More climate data for Split

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Split climate overview or explore weather in Croatia.