Montana — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Montana, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Montana today is 21.2°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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| SEP 14 | 22.3°C | 18.9°C | |
| SEP 15 | 21.8°C | 18.9°C | |
| SEP 16 | 21.2°C | 18.9°C | |
| SEP 17 | 20.9°C | 18.9°C | |
| SEP 18 | 20.5°C | 18.9°C | |
| SEP 19 | 21.1°C | 18.9°C | |
| SEP 20 | 20.5°C | 18.9°C | |
| SEP 21 | 21.1°C | 18.9°C | |
| SEP 22 | 18.9°C | 21.1°C | |
| SEP 23 | 18.9°C | 21.0°C | |
| SEP 24 | 18.9°C | 20.9°C | |
| SEP 25 | 18.9°C | 20.7°C | |
| SEP 26 | 18.9°C | 20.6°C | |
| SEP 27 | 18.9°C | 20.5°C | |
| SEP 28 | 18.9°C | 20.4°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 |
|---|---|---|---|
| January | 2°C | 6°C | 10°C |
| February | 3°C | 7°C | 10°C |
| March | 4°C | 9°C | 13°C |
| April | 8°C | 12°C | 16°C |
| May | 9°C | 14°C | 20°C |
| June | 13°C | 19°C | 25°C |
| July | 14°C | 20°C | 27°C |
| August | 15°C | 21°C | 27°C |
| September | 13°C | 19°C | 25°C |
| October | 10°C | 14°C | 17°C |
| November | 6°C | 9°C | 12°C |
| December | 4°C | 8°C | 10°C |
Montana: Weather Forecast
September 22
September 23
September 24
September 25
September 26
September 27
Location & Local Information
Montana (Монтана) is a northwestern Bulgarian city near the Ogosta reservoir and several smaller lakes and ponds. Water temperatures in the larger reservoir vary seasonally: in spring (March–May) surface temperatures commonly range from about 8–15 °C (46–59 °F) as the water warms; early summer (June) typically reaches 18–22 °C (64–72 °F); the warmest months, July and August, often see 22–26 °C (72–79 °F) at the surface; autumn cooling in September–October brings temperatures back toward 10–18 °C (50–64 °F); in winter surface temperatures fall close to freezing, roughly 0–5 °C (32–41 °F), and parts of the reservoir may ice over in cold years. Actual temperatures depend on depth, recent weather, and water inflow, so local measurements can differ.
Swimming in and around the lake is practiced by locals during the warm months, but formal municipal beaches and lifeguard services are limited. In principle bathing is allowed in many informal spots, yet safety and water quality vary: steep banks, submerged obstacles, boat traffic, fluctuating water levels and occasional water-quality advisories can make some areas unsuitable. Visitors should follow local signs and guidance, avoid swimming alone, and heed official restrictions when they are posted, especially outside the warm summer period when cold water and currents increase risk.