All data are in degrees Celsius. Switch to Fahrenheit
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 19 minutes ago

48°F

yesterday: 47°F

a week ago: 47°F

Trend: slow rise

Today water temperature in Portmarnock is 48.2°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 44°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 48°F. Water temperature range in Portmarnock in April is from 44 to 51 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 50°F.

Table of water temperature values in Portmarnock

DayFact*Average**Forecast***
Apr 108.3°C8.5°C
Apr 119.5°C9.3°C
Apr 129.2°C8.8°C
Apr 138.5°C8.5°C
Apr 149.0°C8.5°C
Apr 158.6°C9.5°C
Apr 168.7°C8.8°C
Apr 179.0°C8.5°C
Apr 189.0°C9.5°C
Apr 198.8°C9.3°C
Apr 209.0°C9.5°C
Apr 218.8°C9.3°C
Apr 229.3°C9.8°C
Apr 239.0°C9.5°C
Apr 249.0°C9.5°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.

Skerries, Ireland
Skerries, Ireland | © Rekon

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
16:18
Timezone
UTC+1
Sunrise
06:19
Sunset
20:27
Length of the day
14 hours 8 minutes

Neighboring cities and resorts

CityWater*Distance**
Malahide48°C 3km
Portraine48°C 7km
Howth48°C 8km
Rush48°C 10km
Dublin48°C 14km
Booterstown48°C 14km
Dun Laoghaire48°C 15km
Monkstown48°C 15km
Glasthule48°C 16km
Skerries48°C 17km
Killiney48°C 18km
Balbriggan48°C 21km
* Water temperature in this place today
** Straight line distance in kilometers
Greystones, Ireland
Greystones, Ireland | © www.irishtimes.com

The warmest water today in Ireland recorded in Cleggan, its value is 50°F. Lowest - in Carlingford, there water temperature now 47°F. Average water temperature in the country today - 49°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
19:00
44°F
10km/h
feels like 41°F, Rain (light rain)
humidity: 90%, clouds: 97%
22:00
43°F
12km/h
feels like 38°F, Clouds (broken clouds: 51-84%)
humidity: 90%, clouds: 78%
APRIL 18
01:00
40°F
11km/h
feels like 35°F, Clouds (broken clouds: 51-84%)
humidity: 91%, clouds: 66%
04:00
40°F
10km/h
feels like 35°F, Clouds (scattered clouds: 25-50%)
humidity: 84%, clouds: 34%
07:00
40°F
9km/h
feels like 36°F, Clouds (scattered clouds: 25-50%)
humidity: 83%, clouds: 28%
10:00
46°F
5km/h
feels like 45°F, Clouds (overcast clouds: 85-100%)
humidity: 72%, clouds: 86%
13:00
50°F
10km/h
feels like 48°F, Rain (light rain)
humidity: 76%, clouds: 93%
16:00
53°F
18km/h
feels like 51°F, Clouds (overcast clouds: 85-100%)
humidity: 73%, clouds: 98%
19:00
53°F
24km/h
feels like 51°F, Clouds (overcast clouds: 85-100%)
humidity: 77%, clouds: 88%
22:00
50°F
24km/h
feels like 48°F, Clouds (broken clouds: 51-84%)
humidity: 84%, clouds: 71%
APRIL 19
01:00
50°F
19km/h
feels like 45°F, Clouds (broken clouds: 51-84%)
humidity: 88%, clouds: 83%
04:00
49°F
19km/h
feels like 44°F, Rain (light rain)
humidity: 85%, clouds: 94%
07:00
47°F
23km/h
feels like 41°F, Clouds (overcast clouds: 85-100%)
humidity: 78%, clouds: 90%
10:00
48°F
21km/h
feels like 43°F, Clouds (overcast clouds: 85-100%)
humidity: 70%, clouds: 92%
13:00
51°F
23km/h
feels like 49°F, Clouds (overcast clouds: 85-100%)
humidity: 64%, clouds: 90%
16:00
51°F
16km/h
feels like 50°F, Clouds (overcast clouds: 85-100%)
humidity: 70%, clouds: 99%
19:00
51°F
15km/h
feels like 49°F, Rain (light rain)
humidity: 77%, clouds: 95%
22:00
46°F
14km/h
feels like 41°F, Clouds (few clouds: 11-25%)
humidity: 79%, clouds: 24%
APRIL 20
01:00
43°F
12km/h
feels like 39°F, Clouds (few clouds: 11-25%)
humidity: 83%, clouds: 19%
04:00
41°F
10km/h
feels like 37°F, Clouds (few clouds: 11-25%)
humidity: 90%, clouds: 21%
07:00
41°F
10km/h
feels like 36°F, Clouds (few clouds: 11-25%)
humidity: 87%, clouds: 20%
10:00
46°F
6km/h
feels like 44°F, Clouds (scattered clouds: 25-50%)
humidity: 67%, clouds: 27%
13:00
48°F
8km/h
feels like 46°F, Clouds (scattered clouds: 25-50%)
humidity: 63%, clouds: 29%
16:00
48°F
6km/h
feels like 46°F, Clouds (broken clouds: 51-84%)
humidity: 60%, clouds: 73%
19:00
48°F
0km/h
feels like 48°F, Clouds (broken clouds: 51-84%)
humidity: 57%, clouds: 73%
22:00
46°F
2km/h
feels like 46°F, Clouds (scattered clouds: 25-50%)
humidity: 70%, clouds: 27%
APRIL 21
01:00
46°F
4km/h
feels like 46°F, Clouds (scattered clouds: 25-50%)
humidity: 75%, clouds: 34%
04:00
46°F
3km/h
feels like 46°F, Clouds (few clouds: 11-25%)
humidity: 79%, clouds: 16%
07:00
46°F
3km/h
feels like 46°F, Clouds (few clouds: 11-25%)
humidity: 82%, clouds: 13%
10:00
51°F
4km/h
feels like 49°F, Clouds (few clouds: 11-25%)
humidity: 71%, clouds: 19%
13:00
50°F
9km/h
feels like 49°F, Clouds (few clouds: 11-25%)
humidity: 78%, clouds: 22%
16:00
50°F
8km/h
feels like 49°F, Clouds (scattered clouds: 25-50%)
humidity: 80%, clouds: 36%
19:00
49°F
7km/h
feels like 47°F, Clouds (scattered clouds: 25-50%)
humidity: 86%, clouds: 32%
22:00
47°F
4km/h
feels like 47°F, Clouds (broken clouds: 51-84%)
humidity: 91%, clouds: 53%
APRIL 22
01:00
48°F
5km/h
feels like 47°F, Clouds (broken clouds: 51-84%)
humidity: 92%, clouds: 76%
04:00
46°F
9km/h
feels like 44°F, Clouds (overcast clouds: 85-100%)
humidity: 88%, clouds: 100%
07:00
46°F
9km/h
feels like 43°F, Clouds (overcast clouds: 85-100%)
humidity: 81%, clouds: 100%
10:00
46°F
7km/h
feels like 44°F, Clouds (overcast clouds: 85-100%)
humidity: 72%, clouds: 99%
Rosslare, Ireland
Rosslare, Ireland | © Tommy Caffrey

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.

All supported languages:
The most accurate and complete data on the temperature of seas and oceans on the Internet
2024 - 2013 © seatemperature.net

Terms and conditions | Privacy Policy | Contacts

We use cookies to best represent our site. By continuing to use our website, you agree to the use of cookies.