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Jerisjärvi — Current Water Temperature, Annual Trends and Forecast

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

Jerisjärvi, Finland
Jerisjärvi, Finland © By hti

Current Water Temperature

12.8°C
Today
11.5°C
Yesterday
10.0°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 Jerisjärvi today is 12.8°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 39.8°C10.0°C
JUN 49.9°C10.0°C
JUN 510.1°C10.0°C
JUN 610.1°C10.0°C
JUN 711.6°C10.0°C
JUN 811.5°C10.0°C
JUN 1012.4°C10.0°C
JUN 1110.0°C12.7°C
JUN 1210.0°C12.5°C
JUN 1310.0°C12.4°C
JUN 1410.0°C12.2°C
JUN 1510.0°C12.1°C
JUN 1610.0°C12.0°C
JUN 1710.0°C11.8°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
January0°C2°C3°C
February0°C2°C3°C
March0°C2°C3°C
April0°C2°C3°C
May0°C4°C9°C
June5°C10°C15°C
July9°C14°C20°C
August8°C13°C19°C
September5°C10°C15°C
October0°C4°C7°C
November0°C2°C5°C
December0°C2°C3°C

Jerisjärvi: Water Temperature by Location

Jerisjärvi: Weather Forecast

June 9

° / °
partly cloudy
rain: 29% | wind:

June 10

° / °
moderate rain
rain: 63% | wind:

June 11

° / °
slight rain
rain: 55% | wind:

June 12

° / °
overcast
rain: 41% | wind:

June 13

° / °
overcast
rain: 47% | wind:

Location & Local Information

Lake Jerisjärvi, located in the municipality of Muonio in western Lapland, is a clear and scenic lake surrounded by fells and pine forests. Because of its northern location and relatively high altitude, the water temperature remains cool for most of the year. In spring, after the ice melts in late May or early June, the surface water temperature is around 3–6 °C (37–43 °F). During early summer, it rises to 12–15 °C (54–59 °F), and in July, the warmest month, Jerisjärvi typically reaches 17–19 °C (63–66 °F). On particularly hot days, shallow bays can briefly reach 20–21 °C (68–70 °F). By September, the water cools below 10 °C (50 °F), and the lake usually freezes again by late October.

Swimming in Jerisjärvi is allowed and common during the short Lapland summer. The water is exceptionally clean, and there are small beaches and piers near the Jerisjärvi area and the local spa hotel. Although the water remains quite cool even in midsummer, many visitors and locals enjoy the refreshing experience, especially on calm and sunny days. The lake’s peaceful surroundings, fresh air, and pure water make it an inviting place for swimming and relaxing in close connection with Lapland’s nature.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Jerisjärvi?
Water Temperature in Jerisjärvi today is 12.8°C.
What is the water temperature in Jerisjärvi during the summer months?
The water temperature in Jerisjärvi in summer fluctuates in the range of 5°C - 20°C.
Is it possible to swim in Jerisjärvi (Finland) and what are the possibilities for this?
Yes — in summer you can swim in Jerisjärvi from its shorelines and small beaches or by launching a boat, canoe or stand‑up paddleboard, though the water is often cool and conditions vary with the season.