Portadown — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Portadown, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Portadown today is 18.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUL 16 | 20.4°C | 18.0°C | |
| JUL 17 | 20.5°C | 18.0°C | |
| JUL 18 | 20.5°C | 18.0°C | |
| JUL 19 | 20.5°C | 18.0°C | |
| JUL 20 | 20.4°C | 18.0°C | |
| JUL 21 | 19.3°C | 18.0°C | |
| JUL 22 | 19.3°C | 18.0°C | |
| JUL 23 | 18.8°C | 18.0°C | |
| JUL 24 | 18.0°C | 18.8°C | |
| JUL 25 | 18.0°C | 18.7°C | |
| JUL 26 | 18.0°C | 18.7°C | |
| JUL 27 | 18.0°C | 18.6°C | |
| JUL 28 | 18.0°C | 18.6°C | |
| JUL 29 | 18.0°C | 18.6°C | |
| JUL 30 | 18.0°C | 18.5°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 | 8°C | 12°C |
| May | 9°C | 13°C | 18°C |
| June | 13°C | 18°C | 22°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 18°C | 23°C |
| September | 11°C | 16°C | 20°C |
| October | 8°C | 11°C | 14°C |
| November | 4°C | 7°C | 10°C |
| December | 0°C | 4°C | 8°C |
Portadown: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
Portadown is a major town in County Armagh, defined by its position on the River Bann, which connects it to Lough Neagh. The water temperature in the River Bann, being a slow-moving, large river system, shows a noticeable seasonal shift. In the colder months, the water typically registers around 5 to 9∘C (41 to 48∘F), making for a bracing environment. During the peak of summer, surface temperatures in this area can warm up considerably, often reaching 15 to 19∘C (59 to 66∘F), though this depends entirely on the ambient air temperature and sunshine.
Swimming in the River Bann at Portadown is generally discouraged and can be risky. While open-water swimming is not strictly banned everywhere, this stretch of the river is a navigation channel, meaning it is frequented by boats, which poses a safety hazard. Furthermore, like many urban rivers, the water quality can be unpredictable, making it unsafe for recreational bathing. Visitors seeking attractions can explore the nearby Moneypenny’s Lock, a historic former navigation lock on the river, or take a short drive to the popular Oxford Island Nature Reserve on the shores of Lough Neagh.