Croatia Split Weather in August — Climate Guide
August in Split is high
August is high for Split.
August is the height of the Split season — the warmest sea of the year and a buzzing coast, but also the most crowded and expensive month. It averages 31°C/21°C with intense sun.
The Adriatic peaks at ~25-26°C, making this the best month for swimming and island life. The Split Summer Festival runs into mid-August, and the whole coast is alive. Assumption Day (Aug 15) is a major Croatian holiday that adds domestic crowds to the international ones.
Travel score
Split August Weather Stats
Avg High
31°C
Avg Low
21°C
Rainy Days
5
45mm total
Sunshine
11h
Daily avg
Humidity
58%
comfortable
UV Index
10
Very high
Wind
9 km/h
Gusts 18
Sea Temp
26°C
Avg water temp
Crowds
Very busy
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
17 μg/m³
PM10
28 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
33°C
Nighttime
22°C
Humidity and wind affect how the actual temperature feels.
Wind
9 km/h
Max gust 18 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Warmest sea of the year (~25-26°C)
- Split Summer Festival (to mid-August)
- Whole coast alive and lively
- Reliably hot, sunny weather
Cons
- Most crowded and expensive month
- Sold-out catamarans and konobas
- Assumption Day (Aug 15) adds crowds
- Relentless midday heat
- Peak accommodation prices
August Events & Festivals
- Peak season — hottest, busiest, priciest
- Split Summer Festival continues (to mid-August)
- Assumption Day (Aug 15) — major Croatian holiday
- Sea at its warmest (~25-26°C)
Split in August — Full Picture
August is the height of the Split season — the warmest sea of the year and a buzzing coast, but also the most crowded and expensive month. It averages 31°C/21°C with intense sun.
The Adriatic peaks at ~25-26°C, making this the best month for swimming and island life. The Split Summer Festival runs into mid-August, and the whole coast is alive. Assumption Day (Aug 15) is a major Croatian holiday that adds domestic crowds to the international ones.
The crowding is at its most intense: packed alleys and beaches, sold-out catamarans, fully booked konobas, and peak prices on everything. The heat is relentless at midday on the marble lanes.
The same survival tactics as July apply — sightsee early and late, break at the beach or in shade at midday, and pre-book stays, ferries, and dinners far ahead. Late August eases slightly as some European holidays end. Pack the lightest clothing, swimwear, reef shoes, and strong sun protection.
What to Wear & What to Pack
Peak summer heat — around 31°C/21°C, hot and dry with the year's warmest sea. Light, breathable clothing, swimwear, hat, sunglasses, SPF 50. Avoid the marble alleys at midday.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
18.3°C
10.3°C
9.7/mo
Summer (Jun·Jul·Aug)
Current29.7°C
20°C
5.7/mo
Autumn (Sep·Oct·Nov)
21°C
13.7°C
9.3/mo
Winter (Dec·Jan·Feb)
11.7°C
5.3°C
11/mo
Split Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 11° | 5° | 11d·80mm | 4.5h | 70% | 2 | Quiet | Low season | |
| 12° | 5° | 10d·65mm | 5h | 68% | 2 | Quiet | Low season | |
| 14° | 7° | 10d·65mm | 6h | 65% | 3 | Quiet | Low season | |
| 18° | 10° | 10d·65mm | 7h | 64% | 5 | Moderate | Shoulder | |
| May (Best) | 23° | 14° | 9d·55mm | 9h | 62% | 7 | Busy | Shoulder |
| June (Best) | 27° | 18° | 8d·50mm | 10h | 60% | 9 | Busy | Peak |
| 31° | 21° | 4d·25mm | 12h | 56% | 10 | Very busy | Peak | |
| 31° | 21° | 5d·45mm | 11h | 58% | 10 | Very busy | Peak | |
| September (Best) | 26° | 18° | 7d·75mm | 8h | 63% | 7 | Busy | Shoulder |
| 21° | 14° | 9d·95mm | 6h | 67% | 4 | Moderate | Shoulder | |
| 16° | 9° | 12d·110mm | 4h | 70% | 2 | Quiet | Low season | |
| 12° | 6° | 12d·95mm | 4h | 71% | 1 | Quiet | Shoulder |
View Other Months
Split August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Split?
Split in August is high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Split in August?
Split August averages a high of 31°C and a low of 21°C.
Does it rain much in Split in August?
Split August averages 45mm of rainfall over about 5 rainy days.
What should I wear in Split in August?
Peak summer heat — around 31°C/21°C, hot and dry with the year's warmest sea. Light, breathable clothing, swimwear, hat, sunglasses, SPF 50. Avoid the marble alleys at midday.
What time are sunrise and sunset in Split in August?
Split August sunrise is 06:00 and sunset is 20:00, with 14h 00min of daylight.
What's the air quality like in Split in August?
Split August air quality (AQI) averages 42, rated Good. PM2.5 averages 17μg/m³.
What activities are recommended in Split in August?
In August, Split is great for Swimming — warmest sea of the year, Island-hopping & beach days, Split Summer Festival.
Is August peak season in Split?
Split August crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Split
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.