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Sandanski — Current Water Temperature, Annual Trends and Forecast

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

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

Current Water Temperature

21.4°C
Today
20.6°C
Yesterday
20.6°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 Sandanski today is 21.4°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 May 10 to June 10

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 320.5°C18.0°C
JUN 420.5°C18.0°C
JUN 520.4°C18.0°C
JUN 620.5°C18.0°C
JUN 720.6°C18.0°C
JUN 820.6°C18.0°C
JUN 1021.4°C18.0°C
JUN 1118.0°C21.2°C
JUN 1218.0°C21.1°C
JUN 1318.0°C20.9°C
JUN 1418.0°C20.7°C
JUN 1518.0°C20.6°C
JUN 1618.0°C20.4°C
JUN 1718.0°C20.2°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
January4°C8°C10°C
February4°C8°C10°C
March7°C10°C13°C
April9°C13°C16°C
May12°C17°C21°C
June14°C18°C23°C
July16°C20°C25°C
August17°C21°C26°C
September14°C18°C23°C
October11°C15°C18°C
November9°C12°C15°C
December4°C8°C10°C

Sandanski: Weather Forecast

June 9

° / °
overcast
rain: 25% | wind:

June 10

° / °
overcast
rain: 30% | wind:

June 11

° / °
slight rain showers
rain: 33% | wind:

June 12

° / °
slight rain showers
rain: 18% | wind:

June 13

° / °
fog
rain: 18% | wind:

June 14

° / °
partly cloudy
rain: 18% | wind:

Location & Local Information

Sandanski (Bulgarian: Сандански) lies in southwestern Bulgaria and benefits from a warm, lowland climate that affects local lake temperatures. In the local lake, seasonal surface temperatures typically range from around 0–6 °C (32–43 °F) in winter to 20–27 °C (68–81 °F) in midsummer. Spring temperatures usually climb from roughly 8–16 °C (46–61 °F), while autumn sees a gradual cooling with values near 12–20 °C (54–68 °F). Shallow, sheltered parts warm more quickly in sunny weather, and peak summer temperatures in July and August offer the warmest, most stable swimming conditions.

Swimming is generally allowed in recreational parts of the lake during the warmer months because surface temperatures reach comfortable levels for most bathers. However, access and safety depend on local rules, signage, and water quality monitoring; some areas may be restricted for ecological protection, private ownership, or when lifeguard services are not provided. Cold-season swimming is uncommon and not advised without appropriate acclimatization or equipment due to low temperatures and potential hypothermia risk. Visitors should check current local information on bathing zones, water quality, and safety provisions before entering the water.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Sandanski?
Water Temperature in Sandanski today is 21.4°C.
What is the water temperature in Sandanski during the summer months?
The water temperature in Sandanski in summer fluctuates in the range of 14°C - 26°C.
Is it possible to swim in Sandanski (Bulgaria) in Struma and what are the possibilities for this?
While swimming directly in the Struma around Sandanski can be possible in isolated spots, it is often limited by variable flow, depth and water-quality issues and not generally recommended, so visitors normally use supervised municipal pools, hotel and spa thermal/mineral pools fed by local springs or designated bathing areas and nearby reservoirs as safer alternatives.