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Portmarnock, Ireland
Portmarnock, Ireland | © Amit Chopade

The most detailed information about the water temperature in Portmarnock in Irish Sea (Leinster, 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 Portmarnock for a week.

Water temperature in Portmarnock right now

data updated 8 minutes ago

52°F

yesterday: 52°F

a week ago: 52°F

Trend: slow rise

Today water temperature in Portmarnock is 52.0°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 54°F.

Analysis and forecast

The water temperature today roughly corresponds to the average value on this day in recent years. Its value has rise over the last week, but has drop compared to 20 days ago. Exactly a year ago, on this day, the water temperature in this location was 51°F. Water temperature range in Portmarnock in May is from 46 to 53 degrees.

According to our forecast, the water temperature in Portmarnock will slowly rise for at least the next 10 days and reach a value of 54°F.

Table of water temperature values in Portmarnock

DayFact*Average**Forecast***
May 2111.2°C11.3°C
May 2211.4°C11.3°C
May 2311.4°C11.3°C
May 2411.7°C11.3°C
May 2511.4°C11.0°C
May 2611.7°C11.5°C
May 2711.3°C11.0°C
May 2811.1°C11.3°C
May 2910.3°C10.1°C
May 3011.3°C11.1°C
May 3111.5°C11.3°C
Jun 112.8°C12.6°C
Jun 213.0°C12.8°C
Jun 312.3°C12.1°C
Jun 412.0°C11.8°C
* Fact - Actual value of water temperature
** 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.

Dun Laoghaire, Ireland
Dun Laoghaire, Ireland | © Liene Dziluma

Annual graph of average water temperature change in Portmarnock

Water temperature in Portmarnock by month

Portmarnock located in the northern hemisphere, at latitude 53 degrees. The water in this location never warms up to comfortable values. Average annual water temperature on the coast in Portmarnock is 53°F, by the seasons: in winter 49°F, in spring 48°F, in summer 57°F, in autumn 57°F. Minimum water temperature (46°F) in Portmarnock it happens in February, maximum (60°F) in August.

You can find out detailed data on how the water temperature in Portmarnock changes in each specific month:

Portmarnock: general information and map

Original name
Portmarnock
Continent
Country
Region
Reservoir
The local time
11:16
Timezone
UTC+1
Sunrise
05:07
Sunset
21:35
Length of the day
16 hours 27 minutes

Neighboring cities and resorts

CityWater*Distance**
Malahide51°C 3km
Portraine52°C 7km
Howth52°C 8km
Rush52°C 10km
Dublin52°C 14km
Booterstown52°C 14km
Dun Laoghaire51°C 15km
Monkstown52°C 15km
Glasthule51°C 16km
Skerries52°C 17km
Killiney52°C 18km
Balbriggan52°C 21km
* Water temperature in this place today
** Straight line distance in kilometers
Malahide, Ireland
Malahide, Ireland | © Kris Copeland

The warmest water today in Ireland recorded in Lahinch, its value is 54°F. Lowest - in Moville, there water temperature now 50°F. Average water temperature in the country today - 52°F.

Water temperature data in Portmarnock 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 9 kilometers. This is Dublin (DUB) airport. We have no information as to whether it is valid and what flights it receives or sends.

Portmarnock: weather forecast

The weather forecast is shown in local time in Portmarnock

TODAY
13:00
54°F
12km/h
feels like 49°F, Clouds (few clouds: 11-25%)
humidity: 74%, clouds: 22%
16:00
54°F
11km/h
feels like 52°F, Clouds (scattered clouds: 25-50%)
humidity: 69%, clouds: 28%
19:00
55°F
10km/h
feels like 54°F, Clouds (scattered clouds: 25-50%)
humidity: 71%, clouds: 38%
22:00
50°F
3km/h
feels like 49°F, Clouds (scattered clouds: 25-50%)
humidity: 82%, clouds: 25%
MAY 29
01:00
48°F
11km/h
feels like 44°F, Clouds (few clouds: 11-25%)
humidity: 85%, clouds: 16%
04:00
44°F
12km/h
feels like 40°F, Clear (clear sky)
humidity: 88%, clouds: 1%
07:00
45°F
12km/h
feels like 41°F, Clear (clear sky)
humidity: 87%, clouds: 6%
10:00
50°F
12km/h
feels like 49°F, Clouds (broken clouds: 51-84%)
humidity: 76%, clouds: 64%
13:00
54°F
18km/h
feels like 52°F, Rain (light rain)
humidity: 75%, clouds: 52%
16:00
51°F
18km/h
feels like 50°F, Rain (light rain)
humidity: 77%, clouds: 42%
19:00
51°F
8km/h
feels like 49°F, Clouds (scattered clouds: 25-50%)
humidity: 72%, clouds: 27%
22:00
49°F
4km/h
feels like 49°F, Clouds (broken clouds: 51-84%)
humidity: 80%, clouds: 70%
MAY 30
01:00
47°F
14km/h
feels like 42°F, Clouds (broken clouds: 51-84%)
humidity: 83%, clouds: 84%
04:00
44°F
15km/h
feels like 39°F, Clouds (overcast clouds: 85-100%)
humidity: 88%, clouds: 99%
07:00
46°F
15km/h
feels like 42°F, Clouds (overcast clouds: 85-100%)
humidity: 85%, clouds: 87%
10:00
50°F
16km/h
feels like 48°F, Clouds (overcast clouds: 85-100%)
humidity: 71%, clouds: 96%
13:00
51°F
14km/h
feels like 49°F, Clouds (overcast clouds: 85-100%)
humidity: 65%, clouds: 98%
16:00
54°F
8km/h
feels like 52°F, Rain (light rain)
humidity: 65%, clouds: 96%
19:00
48°F
4km/h
feels like 48°F, Rain (light rain)
humidity: 90%, clouds: 96%
22:00
47°F
6km/h
feels like 46°F, Rain (light rain)
humidity: 86%, clouds: 75%
MAY 31
01:00
46°F
10km/h
feels like 43°F, Clouds (broken clouds: 51-84%)
humidity: 86%, clouds: 80%
04:00
45°F
10km/h
feels like 42°F, Clouds (scattered clouds: 25-50%)
humidity: 87%, clouds: 39%
07:00
47°F
8km/h
feels like 44°F, Clouds (scattered clouds: 25-50%)
humidity: 86%, clouds: 39%
10:00
52°F
1km/h
feels like 50°F, Clouds (few clouds: 11-25%)
humidity: 70%, clouds: 11%
13:00
51°F
13km/h
feels like 50°F, Clouds (scattered clouds: 25-50%)
humidity: 76%, clouds: 36%
16:00
54°F
13km/h
feels like 52°F, Rain (light rain)
humidity: 72%, clouds: 100%
19:00
55°F
10km/h
feels like 54°F, Rain (light rain)
humidity: 70%, clouds: 99%
22:00
51°F
10km/h
feels like 50°F, Rain (light rain)
humidity: 84%, clouds: 83%
JUNE 1
01:00
48°F
11km/h
feels like 45°F, Clouds (broken clouds: 51-84%)
humidity: 84%, clouds: 76%
04:00
46°F
10km/h
feels like 43°F, Clouds (scattered clouds: 25-50%)
humidity: 82%, clouds: 26%
07:00
48°F
10km/h
feels like 45°F, Clouds (few clouds: 11-25%)
humidity: 82%, clouds: 20%
10:00
54°F
10km/h
feels like 52°F, Clouds (few clouds: 11-25%)
humidity: 61%, clouds: 12%
13:00
56°F
3km/h
feels like 54°F, Clouds (few clouds: 11-25%)
humidity: 63%, clouds: 23%
16:00
56°F
6km/h
feels like 55°F, Clouds (overcast clouds: 85-100%)
humidity: 71%, clouds: 94%
19:00
57°F
5km/h
feels like 56°F, Rain (light rain)
humidity: 73%, clouds: 87%
22:00
53°F
10km/h
feels like 51°F, Rain (light rain)
humidity: 83%, clouds: 76%
JUNE 2
01:00
48°F
15km/h
feels like 44°F, Clouds (scattered clouds: 25-50%)
humidity: 84%, clouds: 46%
04:00
46°F
15km/h
feels like 41°F, Clear (clear sky)
humidity: 86%, clouds: 3%
Westport, Ireland
Westport, Ireland | © P&D Harris

Find out the temperature of sea water in more than 12000 cities and resorts around the world. Water surface temperature values are available in real time. There is a forecast of water temperature changes for the next few days, as well as historical data of sea surface temperature are available for all days of the last years.

We use data from various sources, including National Centers for Environmental Information (NOAA), meteorological services of different countries, data received from more than a thousand buoys around the world, satellite systems for scanning the surface of the oceans and seas.

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