Lake Rāzna — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Rāzna, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Rāzna today is 9.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used. 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 |
|---|---|---|---|
| OCT 8 | 11.0°C | 11.0°C | |
| OCT 9 | 10.9°C | 11.0°C | |
| OCT 10 | 10.9°C | 11.0°C | |
| OCT 11 | 10.8°C | 11.0°C | |
| OCT 12 | 10.6°C | 11.0°C | |
| OCT 13 | 10.2°C | 11.0°C | |
| OCT 14 | 10.2°C | 11.0°C | |
| OCT 15 | 10.0°C | 11.0°C | |
| OCT 16 | 11.0°C | 9.9°C | |
| OCT 17 | 11.0°C | 9.9°C | |
| OCT 18 | 11.0°C | 10.0°C | |
| OCT 19 | 11.0°C | 10.0°C | |
| OCT 20 | 11.0°C | 10.1°C | |
| OCT 21 | 11.0°C | 10.2°C | |
| OCT 22 | 11.0°C | 10.2°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 |
|---|---|---|---|
| January | 0°C | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 0°C | 5°C | 9°C |
| April | 4°C | 8°C | 12°C |
| May | 7°C | 13°C | 19°C |
| June | 15°C | 22°C | 28°C |
| July | 17°C | 22°C | 27°C |
| August | 14°C | 20°C | 25°C |
| September | 11°C | 17°C | 22°C |
| October | 7°C | 11°C | 14°C |
| November | 1°C | 6°C | 11°C |
| December | 0°C | 5°C | 8°C |
Lake Rāzna: Water Temperature by Location
Lake Rāzna: Weather Forecast
October 16
October 17
October 18
October 19
October 20
Location & Local Information
Lake Rāzna, Latvia’s second-largest lake, shows marked seasonal variation in water temperature. In winter the surface is usually at or near 0 °C (32 °F) beneath ice cover. Spring thaw brings surface temperatures up from roughly 2–12 °C (36–54 °F) in April–May. By early summer in June the surface commonly reaches about 15–20 °C (59–68 °F), while midsummer averages in July and August are typically around 18–24 °C (64–75 °F), with occasional heat spells pushing readings toward 25–26 °C (77–79 °F). As autumn progresses the surface cools again to roughly 10–15 °C (50–59 °F). Deeper layers remain substantially colder year-round, so thermoclines can make temperature change rapidly with depth.
Swimming at Lake Rāzna is a regular summertime activity and is generally allowed, especially at designated bathing spots and recreational areas within the Rāzna National Park. Local authorities monitor water quality seasonally, and organized beaches may have facilities or occasional supervision, but conditions vary by site. Bathers should be mindful of sudden depth changes, cooler deep water, and variable weather; in winter the lake is ice-covered and normal swimming is not possible except for regulated ice-swimming events with safety measures. Overall, summer surface temperatures make swimming comfortable for many visitors, while colder seasons limit safe recreational swimming.