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Ranuanjärvi — Current Water Temperature, Annual Trends and Forecast

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

Ranuanjärvi, Finland
Ranuanjärvi, Finland © By Lijonama80, CC BY-SA 4.0

Current Water Temperature

17.0°C
Today
15.9°C
Yesterday
14.6°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 Ranuanjärvi today is 17°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 31 to July 1

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 2314.6°C14.0°C
JUN 2414.6°C14.0°C
JUN 2514.8°C14.0°C
JUN 2615.1°C14.0°C
JUN 2715.4°C14.0°C
JUN 2815.4°C14.0°C
JUN 2915.9°C14.0°C
JUN 3016.6°C14.0°C
JUL 120.0°C17.2°C
JUL 220.0°C17.3°C
JUL 320.0°C17.5°C
JUL 420.0°C17.6°C
JUL 520.0°C17.8°C
JUL 620.0°C17.9°C
JUL 720.0°C18.1°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°C4°C
February0°C2°C4°C
March0°C2°C4°C
April0°C2°C4°C
May3°C8°C13°C
June9°C14°C20°C
July14°C20°C25°C
August12°C18°C23°C
September7°C12°C18°C
October1°C5°C8°C
November0°C2°C5°C
December0°C2°C5°C

Ranuanjärvi: Water Temperature by Location

Ranuanjärvi: Weather Forecast

July 1

° / °
overcast
rain: 14% | wind:

July 2

° / °
light drizzle
rain: 31% | wind:

July 3

° / °
slight thunderstorm
rain: 67% | wind:

July 4

° / °
slight thunderstorm
rain: 55% | wind:

Location & Local Information

Lake Ranuanjärvi, located in southern Lapland near the town of Ranua, is a calm and clean freshwater lake surrounded by forests and low hills. Because of its northern location and moderate depth, the lake’s water temperature remains cool for most of the year but warms enough for swimming in summer. In spring, after the ice melts in May, the surface temperature is around 4–7 °C (39–45 °F). During early summer, it rises to 13–16 °C (55–61 °F), and in July, the warmest month, Ranuanjärvi typically reaches 18–20 °C (64–68 °F). On exceptionally warm days, shallow shores may reach about 21–22 °C (70–72 °F). By September, the water cools below 10 °C (50 °F), and the lake usually freezes again in late October or November.

Swimming in Ranuanjärvi is allowed and common during the summer months. The water is clear and of good quality, making it suitable for recreation. Locals and visitors swim at small beaches and piers around Ranua, especially during calm, sunny days. Although the water may feel fresh even in midsummer, it provides a pleasant and safe environment for swimming and relaxing, surrounded by the quiet beauty of Lapland’s nature.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Ranuanjärvi?
Water Temperature in Ranuanjärvi today is 17°C.
What is the water temperature in Ranuanjärvi during the summer months?
The water temperature in Ranuanjärvi in summer fluctuates in the range of 9°C - 25°C.
Is it possible to swim in Ranuanjärvi (Finland) and what are the possibilities for this?
Yes — you can swim in Ranuanjärvi: in summer people use the natural shores, small beaches or piers for open-water bathing, and in winter experienced locals sometimes practice ice-swimming where conditions and services permit, but always check local water quality, access and safety information since lifeguards are typically not present.