The most detailed information about the water temperature in Portnoo in Atlantic Ocean (Ulster, Ireland). Forecast of changes in water temperature for the next 10 days. Statistics by months for recent years. Information about the neighboring resorts. Weather forecast in Portnoo for a week.
Water temperature in Portnoo right now
data updated 42 minutes ago48°F
yesterday: 48°F
a week ago: 47°F
Trend: stability
Today water temperature in Portnoo is 48.7°F. In general, this water temperature is unacceptable for swimming. But hardened people can afford to be in such water for 5-10 minutes. In any case, the general weather is also important. So, the air temperature at the same time will reach 50°F.
Analysis and forecast
The water temperature today roughly corresponds to the average value on this day in recent years. Its value has rise both over the past 20 days and over the past week. Exactly a year ago, on this day, the water temperature in this location was 50°F. Water temperature range in Portnoo in April is from 46 to 51 degrees.
According to our forecast, the water temperature in Portnoo will move in different directions, in the coming days the water will become warmer, but after 10 days it will still get a little colder to 48°F.
Table of water temperature values in Portnoo
| Day | Fact* | Average** | Forecast*** |
| Apr 12 | 8.8°C | 8.8°C | |
| Apr 13 | 8.9°C | 8.8°C | |
| Apr 14 | 9.1°C | 8.5°C | |
| Apr 15 | 9.0°C | 9.5°C | |
| Apr 16 | 9.4°C | 9.0°C | |
| Apr 17 | 9.3°C | 9.0°C | |
| Apr 18 | 9.4°C | 9.8°C | |
| Apr 19 | 9.3°C | 9.3°C | |
| Apr 20 | 8.8°C | 8.8°C | |
| Apr 21 | 9.5°C | 9.5°C | |
| Apr 22 | 9.3°C | 9.3°C | |
| Apr 23 | 9.5°C | 9.5°C | |
| Apr 24 | 9.8°C | 9.8°C | |
| Apr 25 | 9.3°C | 9.3°C | |
| Apr 26 | 9.5°C | 9.5°C |
** Average - Average water temperature on this day in past years
*** Forecast - Our forecast for the water temperature
Actual nearshore temperatures may vary by several degrees from the indicated values. This is noticeable after heavy rain or after prolonged periods of strong winds. Some downstream winds cause cold, deep waters to replace surface waters that have been warmed by the sun.
To develop a forecast, we use our own mathematical model, which takes into account the current change in water temperature, historical data and the main weather trends, wind strength and direction, air temperature in each specific region. We also take into account data for other resorts in Ireland.
Annual graph of average water temperature change in Portnoo
Water temperature in Portnoo by month
Portnoo located in the northern hemisphere, at latitude 54 degrees. The water in this location never warms up to comfortable values. Average annual water temperature on the coast in Portnoo is 53°F, by the seasons: in winter 49°F, in spring 49°F, in summer 56°F, in autumn 55°F. Minimum water temperature (46°F) in Portnoo it happens in March, maximum (60°F) in August.
You can find out detailed data on how the water temperature in Portnoo changes in each specific month:
Portnoo: general information and map
Neighboring cities and resorts
| City | Water* | Distance** |
| Rossbeg | 48°C | 4km |
| Dungloe | 48°C | 14km |
| Burtonport | 48°C | 16km |
| Kincasslagh | 48°C | 21km |
| Killybegs | 48°C | 23km |
| Glencolumbkille | 48°C | 23km |
| Bruckless | 48°C | 23km |
| Malin Beg | 48°C | 28km |
| Donegal | 48°C | 31km |
| Brinlack | 48°C | 34km |
| Bundoran | 48°C | 42km |
| Mullaghmore | 48°C | 42km |
** Straight line distance in kilometers
The warmest water today in Ireland recorded in Kilmore Quay, its value is 50°F. Lowest - in Culdaff, there water temperature now 47°F. Average water temperature in the country today - 49°F.
Water temperature data in Portnoo and neighboring towns and resorts collected from various sources, using buoys, using satellite maps of sea, river and lake surfaces of the NOAA agency.
We use data from various local authorities in each specific location of the world to more accurately reflect temperature values.
The nearest airport is located in a 23 kilometers. This is Donegal (CFN) airport. We have no information as to whether it is valid and what flights it receives or sends.
Portnoo: weather forecast
The weather forecast is shown in local time in Portnoo
3km/hhumidity: 75%, clouds: 26%
1km/hhumidity: 84%, clouds: 39%
1km/hhumidity: 91%, clouds: 95%
2km/hhumidity: 89%, clouds: 71%
1km/hhumidity: 65%, clouds: 75%
3km/hhumidity: 53%, clouds: 81%
7km/hhumidity: 56%, clouds: 83%
3km/hhumidity: 69%, clouds: 87%
5km/hhumidity: 83%, clouds: 100%
5km/hhumidity: 90%, clouds: 89%
3km/hhumidity: 92%, clouds: 23%
3km/hhumidity: 91%, clouds: 23%
3km/hhumidity: 70%, clouds: 24%
6km/hhumidity: 61%, clouds: 26%
10km/hhumidity: 63%, clouds: 62%
7km/hhumidity: 72%, clouds: 63%
3km/hhumidity: 87%, clouds: 43%
3km/hhumidity: 88%, clouds: 43%
4km/hhumidity: 93%, clouds: 100%
5km/hhumidity: 97%, clouds: 98%
10km/hhumidity: 84%, clouds: 92%
18km/hhumidity: 78%, clouds: 94%
20km/hhumidity: 72%, clouds: 87%
16km/hhumidity: 80%, clouds: 92%
10km/hhumidity: 83%, clouds: 100%
10km/hhumidity: 85%, clouds: 90%
7km/hhumidity: 86%, clouds: 47%
3km/hhumidity: 94%, clouds: 44%
10km/hhumidity: 58%, clouds: 23%
16km/hhumidity: 45%, clouds: 18%
17km/hhumidity: 45%, clouds: 12%
15km/hhumidity: 62%, clouds: 14%
8km/hhumidity: 91%, clouds: 7%
9km/hhumidity: 91%, clouds: 11%
12km/hhumidity: 91%, clouds: 62%
12km/hhumidity: 91%, clouds: 81%
17km/hhumidity: 82%, clouds: 100%
16km/hhumidity: 76%, clouds: 100%
15km/hhumidity: 73%, clouds: 100%
