Selset Reservoir — Current Water Temperature, Annual Trends and Forecast

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

Cow Green Reservoir, United Kingdom © By Paul White, CC BY-SA 4.0

Current Water Temperature

9.7°C

Today

9.8°C

Yesterday

11.0°C

A Week Ago

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Water Temperature in Selset 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	12.0°C
OCT 8	10.9°C	12.0°C
OCT 9	11.1°C	12.0°C
OCT 10	10.2°C	12.0°C
OCT 11	10.8°C	12.0°C
OCT 12	10.4°C	12.0°C
OCT 13	9.8°C	12.0°C
OCT 14	9.7°C	12.0°C
OCT 15		12.0°C	9.8°C
OCT 16		12.0°C	9.9°C
OCT 17		12.0°C	10.0°C
OCT 18		12.0°C	10.2°C
OCT 19		12.0°C	10.3°C
OCT 20		12.0°C	10.4°C
OCT 21		12.0°C	10.5°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	4°C	7°C
February	0°C	4°C	7°C
March	2°C	6°C	9°C
April	5°C	9°C	12°C
May	8°C	14°C	20°C
June	12°C	19°C	25°C
July	14°C	20°C	26°C
August	14°C	20°C	26°C
September	12°C	18°C	23°C
October	8°C	12°C	15°C
November	3°C	8°C	11°C
December	0°C	3°C	7°C

Selset Reservoir: Water Temperature by Location

🇬🇧 United Kingdom > England

Selset Reservoir: Weather Forecast

October 15

° / °

slight rain

rain: 77% | wind:

October 16

° / °

overcast

rain: 31% | wind:

October 17

° / °

overcast

rain: 24% | wind:

October 18

° / °

light drizzle

rain: 27% | wind:

October 19

° / °

light drizzle

rain: 29% | wind:

Location & Local Information

#County Durham

Selset Reservoir in County Durham sits high in Upper Teesdale and typically has cool, year‑round water. Surface temperatures in winter commonly hover around 2–6 °C (36–43 °F), rising through spring to roughly 6–12 °C (43–54 °F). In summer the reservoir often warms to about 14–20 °C (57–68 °F) on warmer spells, while autumn sees a steady drop to around 8–12 °C (46–54 °F). Being an upland waterbody, Selset’s surface temperature can change quickly with weather and usually remains noticeably cooler than lowland lakes and reservoirs.

Swimming at Selset is not formally supervised and the reservoir is part of a working water supply, so bathing is generally discouraged by the water company and local authorities because of cold‑water shock risk, submerged hazards, sudden depth changes and the absence of lifeguards. Wild swimmers do visit, but anyone entering the water should be experienced, wear appropriate thermal protection and check local guidance. The surrounding area is popular for walking, cycling and fishing, with Upper Teesdale scenery, High Force waterfall and a network of Pennine footpaths and rural villages nearby.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Selset Reservoir?

Water Temperature in Selset Reservoir today is 9.7°C.

What is the water temperature in Selset Reservoir during the summer months?

The water temperature in Selset Reservoir in summer fluctuates in the range of 12°C - 26°C.

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

Selset Reservoir is a working water supply where swimming is not officially promoted and can be hazardous, though people do swim there informally and organised or club-led swims may be possible only with the reservoir owner's permission and appropriate safety precautions.