Sea Temperature in Zadar in October (2026) – Swimming Guide
Sea temperature in Zadar in October averages 20.3°C (typical range 18.1°C–22.6°C). Swimming conditions, 10-day trends, and top beaches.
Typical Range: 18.1°C – 22.6°C
Standard swimwear is fine for quick dips. For toddlers and sensitive swimmers, a thin 2mm shorty wetsuit is recommended.
Povoljni termički uvjeti za cjelodnevni boravak uz more
7 rainy days · UV Index 4
Sea Temperature Progression in October by Decade
Multi-year oceanographic measurements across early, mid, and late month:
Annual Oceanographic Climatology for Zadar
Multi-year historical records by the Croatian Meteorological and Hydrological Service (DHMZ) & Institute of Oceanography and Fisheries (IZOR)
| Month | Sea Temperature | Day Air | Night Air | Sun Hours | Rain Days | Swimming Verdict |
|---|---|---|---|---|---|---|
| January | 13.2°C (11.6° – 14.6°) | 11.6°C | 5.3°C | 4.6 h | 7 d | Crisp & cool |
| February | 12.5°C (10.9° – 13.9°) | 12.3°C | 5.7°C | 5.5 h | 6 d | Crisp & cool |
| March | 13.6°C (12° – 15.3°) | 15.2°C | 8.1°C | 6.8 h | 6 d | Crisp & cool |
| April | 15.9°C (14.2° – 18.2°) | 18.9°C | 11.3°C | 8.2 h | 7 d | Crisp & cool |
| May → | 19.4°C (17.1° – 21.9°) | 23.7°C | 15.6°C | 9.6 h | 6 d | Refreshing & invigorating |
| June → | 23.5°C (20.7° – 26.1°) | 27.9°C | 19.5°C | 11 h | 5 d | Comfortable & warm |
| July → | 25.9°C (23.9° – 28.2°) | 30.7°C | 22.1°C | 12.1 h | 3 d | Very warm & ideal |
| August → | 26.2°C (24.3° – 28.6°) | 30.5°C | 21.9°C | 11.4 h | 3 d | Very warm & ideal |
| September → | 23.8°C (21.5° – 25.9°) | 25.7°C | 17.9°C | 9 h | 5 d | Comfortable & warm |
| October → | 20.3°C (18.1° – 22.6°) | 20.7°C | 13.9°C | 6.8 h | 7 d | Refreshing & invigorating |
| November | 17.3°C (15.3° – 19.1°) | 15.9°C | 9.6°C | 4.9 h | 8 d | Crisp & cool |
| December | 14.6°C (12.9° – 16.1°) | 12.3°C | 6.2°C | 4.1 h | 8 d | Crisp & cool |
Top Rated Beaches in Zadar for this Season
Curated bathing spots featuring verified water cleanliness and supreme swimming comfort (11 verified locations):
Expert Swimming & Marine Tips
🌬️ Winds & Marine Currents
Summer afternoons regularly welcome the refreshing Maestral (NW) sea breeze. A strong Bura (NE) wind can temporarily drop surface water temperatures by 1–2°C, especially in shallow coastal coves.
☀️ Sun Protection & UV Exposure
In peak summer months, the UV index regularly surpasses 8. Limit unprotected sunbathing between 11:00 AM and 4:00 PM, and always use high-factor water-resistant sunscreen.
🤿 Water Clarity & Sea Urchins
The Adriatic Sea here consistently scores excellent water quality under EU bathing water directives. Sea urchins on rocky shallows serve as nature’s bio-indicator of immaculate water purity.
Frequently Asked Questions – Sea Temperature in Zadar
Is it warm enough to swim in Zadar in October?
In October, average sea temperature in Zadar is 20.3°C. Refreshing & invigorating / Best for active swimming. Standard swimwear is fine for quick dips. For toddlers and sensitive swimmers, a thin 2mm shorty wetsuit is recommended.
What is the air temperature and daily sunshine in October?
Average daytime air temperature reaches 20.7°C (13.9°C at night), featuring approximately 6.8 hours of bright sunshine daily and only 7 rainy days.
How does sea temperature evolve from early to late October?
During early October (1st–10th) water averages 21.2°C, mid-month (11th–20th) sits at 20.3°C, and late month (21st–31st) reaches 19.4°C.