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Petrinja — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Petrinja, trends, monthly ranges and the forecast for the coming days.

Kupa River, Slovenia
Kupa River, Slovenia © By Kittykay18, CC BY-SA 4.0

Current Water Temperature

16.0°C
Today
14.7°C
Yesterday
15.7°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in Petrinja today is 16°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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

From September 10 to October 11

Table of Daily Sea Temperature Data

Date Current Average Forecast
OCT 315.7°C14.0°C
OCT 415.5°C14.0°C
OCT 515.4°C14.0°C
OCT 615.3°C14.0°C
OCT 714.7°C14.0°C
OCT 814.3°C14.0°C
OCT 914.7°C14.0°C
OCT 1015.5°C14.0°C
OCT 1114.0°C15.9°C
OCT 1214.0°C15.8°C
OCT 1314.0°C15.7°C
OCT 1414.0°C15.6°C
OCT 1514.0°C15.5°C
OCT 1614.0°C15.4°C
OCT 1714.0°C15.3°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.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January3°C8°C11°C
February4°C8°C10°C
March7°C10°C13°C
April8°C12°C15°C
May9°C14°C20°C
June13°C19°C25°C
July15°C20°C26°C
August15°C21°C27°C
September12°C17°C23°C
October10°C14°C17°C
November6°C10°C13°C
December4°C8°C11°C

Petrinja: Weather Forecast

October 11

° / °
slight rain
rain: 73% | wind:

October 12

° / °
slight rain
rain: 13% | wind:

October 13

° / °
overcast
rain: 3% | wind:

October 14

° / °
overcast
rain: 3% | wind:

October 15

° / °
fog
rain: 3% | wind:

October 16

° / °
fog
rain: 5% | wind:

Location & Local Information

In the town of Petrinja, the Kupa River flows calmly, creating a pleasant setting for swimming during the summer months. Here the water temperature typically rises to around 22–25°C in July and August, making it comfortable enough for long swims. Because the river is not too deep in this area, the water warms up more quickly than in wider stretches downstream, while still keeping a refreshing feel during hot days.

Locals in Petrinja often use the accessible riverbanks and calmer sections of the Kupa for swimming and cooling off. The atmosphere is relaxed and natural, without large crowds, which makes it an inviting spot for families and anyone who enjoys swimming in a quiet river setting. Alongside swimming, the river also offers opportunities for simple recreation like wading, fishing, or just relaxing by the water.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Petrinja?
Water Temperature in Petrinja today is 16°C.
What is the water temperature in Petrinja during the summer months?
The water temperature in Petrinja in summer fluctuates in the range of 13°C - 27°C.
Is it possible to swim in Petrinja (Croatia) in Kupa and what are the possibilities for this?
Yes — you can swim in the Kupa at Petrinja from natural pebble and grassy banks and small informal beaches, and also enjoy paddling or river bathing, but water levels, currents and water quality vary seasonally so check local conditions and exercise caution because lifeguards are generally not present.