Colt Crag Reservoir — Current Water Temperature, Annual Trends and Forecast

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

Fontburn Reservoir, United Kingdom © By Glennsmart, Public domain

Current Water Temperature

9.7°C

Today

10.0°C

Yesterday

11.0°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 Colt Crag Reservoir today is 9.7°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

From September 13 to October 14

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
OCT 7	11.0°C	10.0°C
OCT 8	10.6°C	10.0°C
OCT 9	10.8°C	10.0°C
OCT 10	10.3°C	10.0°C
OCT 11	10.1°C	10.0°C
OCT 12	10.0°C	10.0°C
OCT 13	10.0°C	10.0°C
OCT 14	9.2°C	10.0°C
OCT 15		10.0°C	9.7°C
OCT 16		10.0°C	9.7°C
OCT 17		10.0°C	9.7°C
OCT 18		10.0°C	9.8°C
OCT 19		10.0°C	9.8°C
OCT 20		10.0°C	9.8°C
OCT 21		10.0°C	9.8°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
January	0°C	3°C	6°C
February	0°C	3°C	7°C
March	1°C	5°C	8°C
April	4°C	8°C	11°C
May	8°C	13°C	19°C
June	12°C	18°C	24°C
July	13°C	19°C	24°C
August	13°C	19°C	24°C
September	10°C	15°C	21°C
October	6°C	10°C	13°C
November	4°C	8°C	11°C
December	0°C	4°C	7°C

Colt Crag Reservoir: Water Temperature by Location

🇬🇧 United Kingdom > England

Colt Crag Reservoir: Weather Forecast

October 15

° / °

slight rain

rain: 44% | wind:

October 16

° / °

light drizzle

rain: 24% | wind:

October 17

° / °

overcast

rain: 16% | wind:

October 18

° / °

light drizzle

rain: 18% | wind:

Location & Local Information

#Northumberland

Colt Crag Reservoir, set in the upland countryside of Northumberland, holds cool water throughout the year. Typical surface temperatures range from about 0–5°C (32–41°F) in winter, 4–10°C (39–50°F) in spring, 12–18°C (54–64°F) in summer, and 6–12°C (43–54°F) in autumn. Because it is relatively shallow in places and exposed to northern weather, surface warmth in summer is modest and deeper water remains significantly colder, so conditions can feel brisk even on warm days.

Swimming at Colt Crag is generally discouraged and often not permitted because it is a working reservoir supplying water and can present hazards such as cold shock, submerged obstacles and limited rescue access. Many visitors instead enjoy walking, birdwatching and cycling around the reservoir and nearby Harwood Forest; the broader region also offers access to historic routes along Hadrian’s Wall, market towns such as Hexham and larger water recreation areas a short drive away.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Colt Crag Reservoir?

Water Temperature in Colt Crag Reservoir today is 9.7°C.

What is the water temperature in Colt Crag Reservoir during the summer months?

The water temperature in Colt Crag Reservoir in summer fluctuates in the range of 12°C - 24°C.

Is it possible to swim in Colt Crag Reservoir (United Kingdom) and what are the possibilities for this?

Colt Crag Reservoir is a working water supply where open-water swimming is generally not permitted for safety and water-quality reasons, although some people do swim there informally at their own risk and occasional organised or permitted swims may be arranged through local clubs or the reservoir owner.