Lake Carr Mill Dam — Current Water Temperature, Annual Trends and Forecast

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

Lake Carr Mill Dam, United Kingdom © By Gary Rogers, CC BY-SA 2.0

Current Water Temperature

20.3°C

Today

20.4°C

Yesterday

21.2°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 Lake Carr Mill Dam today is 20.3°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

From June 22 to July 23

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
JUL 16	21.2°C	22.9°C
JUL 17	20.7°C	22.9°C
JUL 18	20.7°C	22.9°C
JUL 19	20.7°C	22.9°C
JUL 20	20.7°C	22.9°C
JUL 21	20.4°C	22.9°C
JUL 22	20.4°C	22.9°C
JUL 23	20.3°C	22.9°C
JUL 24		22.9°C	20.4°C
JUL 25		22.9°C	20.6°C
JUL 26		22.9°C	20.7°C
JUL 27		22.9°C	20.8°C
JUL 28		22.9°C	21.0°C
JUL 29		22.9°C	21.1°C
JUL 30		22.9°C	21.2°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	2°C	6°C	9°C
February	2°C	6°C	9°C
March	3°C	7°C	10°C
April	7°C	11°C	14°C
May	11°C	17°C	22°C
June	14°C	21°C	27°C
July	17°C	23°C	28°C
August	17°C	22°C	27°C
September	13°C	19°C	24°C
October	10°C	14°C	18°C
November	5°C	9°C	12°C
December	2°C	6°C	9°C

Lake Carr Mill Dam: Water Temperature by Location

🇬🇧 United Kingdom > England

Lake Carr Mill Dam: Weather Forecast

July 24

° / °

overcast

rain: 5% | wind:

July 25

° / °

light drizzle

rain: 61% | wind:

July 26

° / °

light drizzle

rain: 61% | wind:

July 27

° / °

light drizzle

rain: 63% | wind:

Location & Local Information

#Merseyside

Carr Mill Dam’s water temperature varies with the seasons, typically running cool even in summer. In winter the surface usually sits around 4–7 °C (39–45 °F), rising through spring to about 6–12 °C (43–54 °F). Summer surface temperatures commonly reach 14–20 °C (57–68 °F) on warm spells, though brief heatwaves can push the top layer a little higher, while autumn sees a steady decline to roughly 8–13 °C (46–55 °F). These are approximate surface figures; deeper or sheltered parts of the dam stay colder and layered conditions can change quickly after rain.

Swimming at Carr Mill Dam is generally not permitted and is often discouraged on safety and environmental grounds. There are no lifeguards, water quality and visibility vary, and submerged hazards and steep banks present risks, so official signage typically advises against wild swimming; nonetheless, some local swimmers enter at their own risk. The reserve remains attractive for non-swimmers: there are woodland walks, birdlife and peaceful picnic spots around the water, plus nearby village amenities and the wider St Helens area for cafés and other attractions.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lake Carr Mill Dam?

Water Temperature in Lake Carr Mill Dam today is 20.3°C.

What is the water temperature in Lake Carr Mill Dam during the summer months?

The water temperature in Lake Carr Mill Dam in summer fluctuates in the range of 14°C - 28°C.

Is it possible to swim in Carr Mill Dam (United Kingdom) and what are the possibilities for this?

Swimming at Carr Mill Dam is not an official, designated activity—unsupervised wild swimming is generally discouraged and may be restricted for safety and water-quality reasons, though some people swim informally and safer alternatives are to join organised open‑water sessions or use authorised local swimming facilities after checking current rules with landowners or the council.