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Pernik — Current Water Temperature, Annual Trends and Forecast

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

Struma River, Bulgaria
Struma River, Bulgaria © By GreatBernard, CC0

Current Water Temperature

22.6°C
Today
23.5°C
Yesterday
23.1°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 Pernik today is 22.6°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

From July 31 to August 31

Table of Daily Sea Temperature Data

Date Current Average Forecast
AUG 2423.1°C18.6°C
AUG 2523.1°C18.6°C
AUG 2623.0°C18.6°C
AUG 2723.0°C18.6°C
AUG 2823.1°C18.6°C
AUG 2923.5°C18.6°C
AUG 3023.5°C18.6°C
AUG 3123.5°C18.6°C
SEP 116.0°C22.3°C
SEP 216.0°C21.9°C
SEP 316.0°C21.6°C
SEP 416.0°C21.3°C
SEP 516.0°C21.0°C
SEP 616.0°C20.6°C
SEP 716.0°C20.3°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
January2°C6°C9°C
February2°C6°C9°C
March3°C7°C11°C
April5°C9°C13°C
May8°C14°C18°C
June11°C16°C21°C
July14°C19°C24°C
August14°C19°C24°C
September11°C16°C20°C
October9°C13°C16°C
November6°C9°C12°C
December2°C6°C9°C

Pernik: Weather Forecast

September 1

° / °
overcast
rain: 14% | wind:

September 2

° / °
slight thunderstorm
rain: 73% | wind:

September 3

° / °
slight rain showers
rain: 39% | wind:

September 4

° / °
partly cloudy
rain: 10% | wind:

Location & Local Information

Pernik sits near the Studena Reservoir, the main lake-like body of water associated with the town. Water temperatures there vary with the seasons and the reservoir’s elevation, typically ranging in spring from about 5–15 °C (41–59 °F) as the water slowly warms after winter. In summer, surface temperatures in sheltered bays and shallow areas commonly reach roughly 18–25 °C (64–77 °F), though deeper parts remain cooler. Autumn temperatures fall back to roughly 8–16 °C (46–61 °F) as cooling sets in, and in winter the reservoir can approach near-freezing conditions, around 0–4 °C (32–39 °F), depending on cold spells and ice cover.

Swimming at the Studena Reservoir is generally restricted because it serves as a source of drinking water and because of safety concerns like steep banks, submerged hazards and variable depths. For those reasons local authorities typically prohibit or limit organized bathing and water sports; nevertheless, informal swimming sometimes occurs in warmer months in shallow inlets. Visitors should pay attention to posted signs and local regulations: permitted recreational use is usually focused on designated areas and activities that protect water quality and public safety.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Pernik?
Water Temperature in Pernik today is 22.6°C.
What is the water temperature in Pernik during the summer months?
The water temperature in Pernik in summer fluctuates in the range of 11°C - 24°C.
Is it possible to swim in Pernik (Bulgaria) in Struma and what are the possibilities for this?
Swimming in the Struma around Pernik is generally not recommended because there are no official bathing sites and water quality and currents can vary, so people instead use municipal pools in Pernik or travel to nearby reservoirs and designated river beaches downstream where swimming is permitted and sometimes supervised.