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Larvik — Current Water Temperature, Annual Trends and Forecast

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

Numedalslågen River, Norway
Numedalslågen River, Norway © By Øystein Engen, CC BY-SA 2.5

Current Water Temperature

16.2°C
Today
14.2°C
Yesterday
13.7°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 Larvik today is 16.2°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 30 to June 30

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 2313.7°C15.5°C
JUN 2413.7°C15.5°C
JUN 2514.1°C15.5°C
JUN 2614.4°C15.5°C
JUN 2714.2°C15.5°C
JUN 2814.2°C15.5°C
JUN 2914.2°C15.5°C
JUN 3015.9°C15.5°C
JUL 118.0°C16.3°C
JUL 218.0°C16.4°C
JUL 318.0°C16.5°C
JUL 418.0°C16.6°C
JUL 518.0°C16.7°C
JUL 618.0°C16.7°C
JUL 718.0°C16.8°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°C5°C
February0°C2°C5°C
March0°C3°C6°C
April2°C6°C9°C
May6°C10°C15°C
June10°C16°C20°C
July14°C18°C23°C
August14°C18°C23°C
September10°C15°C19°C
October6°C9°C12°C
November2°C6°C9°C
December0°C3°C6°C

Larvik: Weather Forecast

July 1

° / °
light drizzle
rain: 71% | wind:

July 2

° / °
moderate drizzle
rain: 68% | wind:

July 3

° / °
overcast
rain: 14% | wind:

July 4

° / °
overcast
rain: 30% | wind:

Location & Local Information

Larvik (in Norwegian - Larvik) in Vestfold County lies in a region of Norway with many small lakes and ponds framed by forest and moraine landscape. Typical lake water temperatures vary by season: in spring (April–May) many lakes are cold, roughly 4–12 °C (39–54 °F) as snowmelt cools shallow basins; in summer (June–August) common ranges are about 15–22 °C (59–72 °F), with shallow, sheltered spots occasionally reaching 23–25 °C (73–77 °F) on hot days; autumn (September–October) temperatures generally fall to 8–15 °C (46–59 °F); and in winter lakes are near freezing, often 0–4 °C (32–39 °F) where ice does not fully form. Local variations depend on depth, wind exposure and recent weather.

Swimming in Larvik’s lakes is generally allowed and practiced by residents and visitors, supported by Norway’s public access traditions and by a number of designated bathing areas maintained for recreation. However, some reservoirs and protected water sources may have restrictions, and lifeguards are not present at most inland spots, so safety precautions are advisable. Water quality is monitored seasonally by authorities in popular bathing locations, but clarity and temperature can change rapidly, so check local notices and exercise caution when entering cold or unfamiliar waters.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Larvik?
Water Temperature in Larvik today is 16.2°C.
What is the water temperature in Larvik during the summer months?
The water temperature in Larvik in summer fluctuates in the range of 10°C - 23°C.
Is it possible to swim in Larvik (Norway) in Numedalslågen and what are the possibilities for this?
Yes — you can swim in the Numedalslågen around Larvik, mainly as wild swimming from accessible riverbanks, calm bends and shallow inlets or by using nearby bathing spots in summer, but you should be cautious of cold water, changing depths and strong currents and follow local signs and advice.