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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

15.3°C
Today
15.5°C
Yesterday
15.5°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 15.3°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 1 to July 2

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 2515.5°C18.4°C
JUN 2615.8°C18.4°C
JUN 2716.2°C18.4°C
JUN 2816.3°C18.4°C
JUN 2916.3°C18.4°C
JUN 3016.4°C18.4°C
JUL 115.5°C19.0°C
JUL 215.3°C19.0°C
JUL 319.0°C15.5°C
JUL 419.0°C15.7°C
JUL 519.0°C15.9°C
JUL 619.0°C16.0°C
JUL 719.0°C16.2°C
JUL 819.0°C16.4°C
JUL 919.0°C16.6°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
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 3

° / °
overcast
rain: 12% | wind:

July 4

° / °
light drizzle
rain: 32% | wind:

July 5

° / °
light drizzle
rain: 29% | wind:

July 6

° / °
overcast
rain: 20% | wind:

July 7

° / °
overcast
rain: 4% | 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 15.3°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.