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Navan — Current Water Temperature, Annual Trends and Forecast

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

River Boyne, Republic of Ireland
River Boyne, Republic of Ireland © By Jean Housen, CC BY-SA 3.0

Current Water Temperature

17.6°C
Today
17.9°C
Yesterday
18.5°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 Navan today is 17.6°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 June 22 to July 23

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUL 1618.5°C19.0°C
JUL 1718.5°C19.0°C
JUL 1818.6°C19.0°C
JUL 1918.5°C19.0°C
JUL 2018.4°C19.0°C
JUL 2118.2°C19.0°C
JUL 2217.9°C19.0°C
JUL 2317.6°C19.0°C
JUL 2419.0°C17.7°C
JUL 2519.0°C17.7°C
JUL 2619.0°C17.8°C
JUL 2719.0°C17.9°C
JUL 2819.0°C18.0°C
JUL 2919.0°C18.0°C
JUL 3019.0°C18.1°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
January1°C5°C8°C
February1°C5°C8°C
March2°C6°C9°C
April6°C9°C12°C
May9°C14°C18°C
June13°C18°C23°C
July15°C19°C24°C
August14°C18°C23°C
September11°C16°C20°C
October9°C12°C15°C
November4°C7°C11°C
December4°C4°C9°C

Navan: Weather Forecast

July 24

° / °
overcast
rain: 6% | wind:

July 25

° / °
light drizzle
rain: 37% | wind:

July 26

° / °
light drizzle
rain: 23% | wind:

July 27

° / °
light drizzle
rain: 58% | wind:

Location & Local Information

Navan, the county town of Meath, sits at the confluence of the River Boyne and the River Blackwater. The River Boyne is generally a cold-water environment, with temperatures fluctuating across the seasons. Based on data near Navan, the water typically ranges from about 4∘C (39∘F) in the winter months to peak around 15∘C (59∘F) during the warmest part of late summer, which is typical for a major Irish river. This low temperature range means the water remains cold enough throughout the year to pose a risk of cold shock to unprepared swimmers.

While the River Boyne is not designated as a bathing water area near Navan and official swimming is not encouraged due to currents, potential hazards like weirs, and water quality issues which can be subject to change, recreational activities are very popular. Locals and visitors often use the river for kayaking and angling, which are popular pursuits along the river's extensive stretches and towpaths, such as the Boyne Ramparts Walk. The Navan area is also a fantastic base for exploring the rich historical heritage of the Boyne Valley, including the ancient Neolithic tombs of Brú na Bóinne (Newgrange and Knowth) and the legendary Hill of Tara.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Navan?
Water Temperature in Navan today is 17.6°C.
What is the water temperature in Navan during the summer months?
The water temperature in Navan in summer fluctuates in the range of 13°C - 24°C.
Is it possible to swim in Navan (Republic of Ireland) in River Boyne and what are the possibilities for this?
Yes — you can swim in the River Boyne around Navan, but opportunities are largely informal open‑water swims rather than designated bathing spots, so it's advisable to go with local clubs or organised events and check current water quality and safety (pollution, flow and submerged hazards) before entering.