Rab Island — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Rab Island (Lika-Senj County, Croatia). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Rab Island help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Rab Island in the Adriatic Sea today is 21°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Rab Island has risen over the last week and month. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Rab Island will be 21.6°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 1 | 20.1°C | 19.8°C | |
| JUN 2 | 20.0°C | 20.0°C | |
| JUN 3 | 20.9°C | 20.0°C | |
| JUN 4 | 21.1°C | 20.5°C | |
| JUN 5 | 21.0°C | 20.5°C | |
| JUN 6 | 20.9°C | 20.8°C | |
| JUN 7 | 20.9°C | 21.0°C | |
| JUN 8 | 21.1°C | 21.3°C | |
| JUN 9 | 21.3°C | 21.3°C | 21.3°C |
| JUN 10 | 21.0°C | 21.3°C | |
| JUN 11 | 21.0°C | 21.4°C | |
| JUN 12 | 21.0°C | 21.4°C | |
| JUN 13 | 21.0°C | 21.5°C | |
| JUN 14 | 20.8°C | 21.5°C | |
| JUN 15 | 21.3°C | 21.5°C | |
| JUN 16 | 21.3°C | 21.6°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Rab is an Adriatic island off Croatia’s northern coast, part of Primorje‑Gorski Kotar County, known for its varied shoreline and Mediterranean climate. Sea temperatures around Rab follow the seasonal cycle typical of the northern Adriatic: winter months (December–February) usually see water around 11–14 °C, spring (March–May) warms from roughly 13–20 °C, summer (June–August) brings the warmest conditions commonly between 22–26 °C, and autumn (September–November) cools back to about 18–23 °C. Local variations occur depending on exposure and depth, with shallow bays and sandy stretches warming earlier in spring and retaining heat longer into autumn, while deeper or wind‑exposed areas stay cooler.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 11°C | 13°C | 16°C |
| February | 10°C | 12°C | 14°C |
| March | 10°C | 12°C | 14°C |
| April | 11°C | 14°C | 19°C |
| May | 13°C | 17°C | 23°C |
| June | 16°C | 21°C | 26°C |
| July | 21°C | 24°C | 28°C |
| August | 22°C | 25°C | 28°C |
| September | 18°C | 23°C | 27°C |
| October | 16°C | 19°C | 24°C |
| November | 15°C | 18°C | 21°C |
| December | 12°C | 15°C | 18°C |
* Click on a month to view detailed water temperature data.
Rab Island: Weather Forecast
June 10
June 11
Location, Beaches & Local Information
Nearby Beaches & Facilities
Banova Vila Beach
Beach Padova Ii
Beach Padova Iii
Skver Beach
Fkk Kandarola Beach Rab
Beach Kandarola
Beach Tara
Rt Dolin Beach
Fkk Kandarola Beach Rab
Swimming Conditions
Swimming and beach holidays on Rab suit a range of visitors, from families seeking gentle, shallow water to swimmers and snorkelers preferring clearer, rockier coves. The island offers sandy beaches, most notably the long shallow bay at Lopar which reaches warmer temperatures sooner, as well as pebble and rocky beaches around Rab Town and quieter coves ideal for snorkeling and small‑boat anchoring. During June to September the sea is most comfortable for casual swimming without a wetsuit, while shoulder seasons may still be pleasant for those prepared for cooler water. Seasonal beach facilities, boat excursions, and sheltered bays make Rab a flexible option for a coastal holiday focused on safe, accessible swimming.