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Marlow — Current Water Temperature, Annual Trends and Forecast

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

Marlow, United Kingdom
Marlow, United Kingdom © By Snapper five, CC BY 3.0

Current Water Temperature

13.8°C
Today
13.8°C
Yesterday
16.3°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 Marlow today is 13.8°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 10 to June 10

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 315.0°C18.9°C
JUN 415.0°C18.9°C
JUN 515.0°C18.9°C
JUN 615.0°C18.9°C
JUN 713.8°C18.9°C
JUN 813.8°C18.9°C
JUN 1013.8°C18.9°C
JUN 1118.9°C14.1°C
JUN 1218.9°C14.3°C
JUN 1318.9°C14.6°C
JUN 1418.9°C14.8°C
JUN 1518.9°C15.1°C
JUN 1618.9°C15.3°C
JUN 1718.9°C15.6°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
January2°C6°C9°C
February3°C7°C9°C
March5°C9°C11°C
April7°C11°C14°C
May9°C14°C18°C
June13°C19°C24°C
July16°C20°C25°C
August15°C19°C24°C
September13°C18°C22°C
October9°C13°C16°C
November4°C8°C11°C
December3°C7°C9°C

Marlow: Weather Forecast

June 9

° / °
light drizzle
rain: 73% | wind:

June 10

° / °
light drizzle
rain: 60% | wind:

June 11

° / °
slight rain
rain: 56% | wind:

June 12

° / °
overcast
rain: 14% | wind:

June 13

° / °
mainly clear
rain: 8% | wind:

Location & Local Information

Marlow, a picturesque town in Buckinghamshire, sits on one of the most elegant and tranquil stretches of the River Thames. The river here flows gently between wooded banks and historic bridges, creating a calm and scenic environment for leisure. Water temperatures in this part of the Thames follow the seasonal rhythm typical of southern England. In winter, the river averages around 5–7°C (41–45°F), remaining cold and brisk. By spring, it begins to warm to about 10–13°C (50–55°F), reaching its peak in July and August when the water often measures 18–21°C (64–70°F). Early autumn retains mild temperatures of around 14–16°C (57–61°F) before cooling again as the season advances.

Swimming in the River Thames at Marlow is permitted and increasingly popular, particularly in summer when the water becomes comfortably warm. The river’s gentle flow and generally good water quality make it suitable for open-water swimming, though care is advised near boat traffic and deeper channels. Many locals and visitors enjoy early-morning swims or paddleboarding along the calm waters. Marlow’s riverside parks, walking trails, and historic suspension bridge add to the area’s appeal, while nearby attractions such as Higginson Park and the Chiltern Hills offer further opportunities for outdoor recreation in a serene natural setting.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Marlow?
Water Temperature in Marlow today is 13.8°C.
What is the water temperature in Marlow during the summer months?
The water temperature in Marlow in summer fluctuates in the range of 13°C - 25°C.
Is it possible to swim in Marlow (United Kingdom) in River Thames and what are the possibilities for this?
Yes — you can swim in the non‑tidal River Thames around Marlow, either by taking part in organised open‑water swim groups or supervised events, or by wild‑swimming from public riverbanks and locally recognised safe spots near locks and weirs where permitted, but you should check access rules and water quality first and take precautions against boats, currents, cold and submerged hazards, ideally swimming with others and using safety equipment.