30YearWeather
Split in September
Split weather in September - Croatia
😊Warm & Pleasant

Split Weather in September

Plan your September trip to Split, Croatia. Based on 30 years of NASA data, expect temperatures of 25°C (high) to 17°C (low), with 21% rain probability and 8 hours of daily sunshine. The Adriatic Sea averages 25°C in September. Great conditions with only 6 rainy days expected.

Avg High
25°C

Hottest around day 1

Avg Low
17°C

Coolest around day 30

Rainy Days
6days

21% avg rain chance

Sunshine
8hrs/day

Autumn season

Sea Temperature in September

Adriatic Sea(Jadransko more)

24.6°C

Monthly Average

Water Feel
☀️Warm

Perfect for swimming and water sports

Swim Rating
Excellent for swimming

Based on average sea surface temperature

Body of Water
Adriatic Sea

Jadransko more

Split coastline

Split September Weather Calendar

Click any day to see detailed weather information

Currency

EUR

Euro

Language

Croatian

Driving

Right side

Connect

Split has good 4+G and 5G speed from Tel...

Safety

Very High Safety

GPI: 1.44

Travel Intelligence

Exclusive flight analytics & health data for Split

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Low Traffic
34/ 100
Traffic Index

Quieter airport

Peak Daily Arrivals

0

slots per day

Peak

Jul

Low

Feb

Monthly Traffic Distribution

9
Jan
7
Feb
9
Mar
28
Apr
50
May
74
Jun
85
Jul
83
Aug
61
Sep
47
Oct
13
Nov
11
Dec
Traffic Level
Low Season

Key Connections

Zagreb (ZAG)
Frankfurt-am-Main (FRA)
Munich (MUC)
Rome Leonardo da Vinci–Fiumicino (FCO)
Stuttgart (STR)

Health & Safety Advisory

CDC travel health recommendations

7 Recommendations
COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Croatia.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Croatia. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Croatia.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Croatia.If rabies exposures occur while in Croatia, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Tick-borne Encephalitis

For travelers moving or traveling toTBE-endemic areasTBE vaccineis recommended for persons who will haveextensiveexposure to ticks based on their planned outdoor activities and itinerary.TBE vaccine may be considered for persons who might engage in outdoor activities in areas ticks are likely to be found.

+1 more

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Split?

👍Recommended for planning your trip
Short Answer

Ideal beach conditions in Split during September: 24.6°C turquoise waters, 25°C air, 21% rain. 0.3m calm waves suit families and swimmers alike.

Decision Factors

Vaccinations required

Yellow Fever

Ideal temperature range

25.1°C - perfect for sightseeing and outdoor activities

Pleasant swimming conditions

24.6°C sea temperature

Health precautions needed

Be aware of: Leptospirosis, Crimean-Congo Hemorrhagic fever, Leishmaniasis

Plenty of sunshine

10.3h of sunshine daily

Calm, family-friendly seas

0.31m wave height - Lake-like

Good For

  • 🏖️
    Beach lovers

    24.6°C warm seas and 21% rain probability

  • 👨‍👩‍👧‍👦
    Families with children

    Comfortable 25.1°C temperatures and low 21% rain risk

  • 👴
    Elderly travelers

    Comfortable 25.1°C temperature range with manageable humidity

  • 🥾
    Outdoor enthusiasts

    Ideal hiking conditions: 25.1°C, 21% rain chance

  • 📸
    Photographers

    10.3h sunshine, 61% clear skies for golden hour shots

Who Should Avoid

Suitable for most traveler types

900 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Split in September averages 25°C with 21% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Split in September

What are the temperatures in Split in September?

Daytime highs average 25°C, nights drop to 17°C. Temperatures remain fairly consistent.

How many rainy days in Split in September?

Expect around 6 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Split in September?

Comfortable casual wear with a light jacket for evenings.

Is September peak season in Split?

This is typically peak season with higher prices. Book 2-3 months ahead.