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Portmarnock, Ireland
Portmarnock, Ireland | © Dave & Olga Walsh

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 35 minutes ago

46°F

yesterday: 47°F

a week ago: 46°F

Trend: stability

Today water temperature in Portmarnock is 46.8°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 38°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 46°F. Water temperature range in Portmarnock in April is from 44 to 51 degrees.

According to our forecast, in the next 5-6 days the water temperature in Portmarnock will become lower than today, but in 10 days it will still slightly rise, its value will be 48°F.

Table of water temperature values in Portmarnock

DayFact*Average**Forecast***
Apr 38.7°C9.3°C
Apr 48.6°C9.0°C
Apr 57.9°C8.8°C
Apr 67.9°C9.3°C
Apr 78.5°C8.5°C
Apr 88.6°C9.0°C
Apr 98.4°C9.0°C
Apr 108.2°C8.8°C
Apr 119.5°C8.9°C
Apr 128.8°C8.2°C
Apr 138.3°C7.7°C
Apr 148.5°C7.9°C
Apr 159.0°C8.4°C
Apr 168.8°C8.2°C
Apr 178.5°C7.9°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.

Portmarnock, Ireland
Portmarnock, Ireland | © Amit Chopade

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
15:30
Timezone
UTC+1
Sunrise
06:36
Sunset
20:14
Length of the day
13 hours 38 minutes

Neighboring cities and resorts

CityWater*Distance**
Malahide47°C 3km
Portraine47°C 7km
Howth46°C 8km
Rush47°C 10km
Dublin46°C 14km
Booterstown46°C 14km
Dun Laoghaire46°C 15km
Monkstown46°C 15km
Glasthule47°C 16km
Skerries47°C 17km
Killiney47°C 18km
Balbriggan46°C 21km
* Water temperature in this place today
** Straight line distance in kilometers
Courtown, Ireland
Courtown, Ireland | © Nicolas Thézé

The warmest water today in Ireland recorded in Kilcrohane, its value is 50°F. Lowest - in Monkstown, there water temperature now 46°F. Average water temperature in the country today - 47°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
10:00
38°F
15km/h
feels like 29°F, Clear (clear sky)
humidity: 69%, clouds: 8%
13:00
42°F
15km/h
feels like 35°F, Clouds (few clouds: 11-25%)
humidity: 58%, clouds: 13%
16:00
42°F
14km/h
feels like 36°F, Clouds (scattered clouds: 25-50%)
humidity: 55%, clouds: 42%
19:00
41°F
14km/h
feels like 36°F, Clouds (scattered clouds: 25-50%)
humidity: 59%, clouds: 45%
22:00
39°F
18km/h
feels like 32°F, Clouds (scattered clouds: 25-50%)
humidity: 66%, clouds: 42%
APRIL 11
01:00
36°F
17km/h
feels like 28°F, Clouds (scattered clouds: 25-50%)
humidity: 77%, clouds: 31%
04:00
33°F
18km/h
feels like 24°F, Clouds (few clouds: 11-25%)
humidity: 84%, clouds: 22%
07:00
33°F
18km/h
feels like 25°F, Rain (light rain)
humidity: 88%, clouds: 31%
10:00
39°F
23km/h
feels like 31°F, Rain (light rain)
humidity: 75%, clouds: 68%
13:00
41°F
20km/h
feels like 34°F, Clouds (broken clouds: 51-84%)
humidity: 63%, clouds: 83%
16:00
42°F
14km/h
feels like 36°F, Clouds (broken clouds: 51-84%)
humidity: 57%, clouds: 60%
19:00
41°F
6km/h
feels like 39°F, Clouds (broken clouds: 51-84%)
humidity: 60%, clouds: 56%
22:00
38°F
6km/h
feels like 35°F, Clouds (few clouds: 11-25%)
humidity: 70%, clouds: 18%
APRIL 12
01:00
37°F
10km/h
feels like 31°F, Clouds (scattered clouds: 25-50%)
humidity: 74%, clouds: 32%
04:00
36°F
13km/h
feels like 29°F, Clouds (overcast clouds: 85-100%)
humidity: 73%, clouds: 92%
07:00
37°F
18km/h
feels like 30°F, Snow (light snow)
humidity: 88%, clouds: 96%
10:00
39°F
15km/h
feels like 33°F, Clouds (overcast clouds: 85-100%)
humidity: 87%, clouds: 100%
13:00
44°F
17km/h
feels like 39°F, Clouds (overcast clouds: 85-100%)
humidity: 79%, clouds: 97%
16:00
47°F
16km/h
feels like 42°F, Rain (light rain)
humidity: 73%, clouds: 97%
19:00
46°F
14km/h
feels like 42°F, Rain (light rain)
humidity: 80%, clouds: 99%
22:00
43°F
12km/h
feels like 38°F, Rain (light rain)
humidity: 86%, clouds: 96%
APRIL 13
01:00
40°F
12km/h
feels like 35°F, Clouds (broken clouds: 51-84%)
humidity: 87%, clouds: 69%
04:00
39°F
12km/h
feels like 34°F, Clouds (broken clouds: 51-84%)
humidity: 87%, clouds: 56%
07:00
39°F
12km/h
feels like 34°F, Clouds (broken clouds: 51-84%)
humidity: 88%, clouds: 76%
10:00
45°F
10km/h
feels like 41°F, Clouds (scattered clouds: 25-50%)
humidity: 78%, clouds: 45%
13:00
48°F
5km/h
feels like 47°F, Clouds (scattered clouds: 25-50%)
humidity: 68%, clouds: 50%
16:00
48°F
9km/h
feels like 45°F, Rain (light rain)
humidity: 70%, clouds: 78%
19:00
48°F
9km/h
feels like 46°F, Clouds (overcast clouds: 85-100%)
humidity: 74%, clouds: 87%
22:00
44°F
7km/h
feels like 42°F, Clouds (overcast clouds: 85-100%)
humidity: 82%, clouds: 95%
APRIL 14
01:00
43°F
6km/h
feels like 41°F, Clouds (overcast clouds: 85-100%)
humidity: 80%, clouds: 96%
04:00
42°F
6km/h
feels like 40°F, Clouds (broken clouds: 51-84%)
humidity: 82%, clouds: 70%
07:00
42°F
3km/h
feels like 42°F, Clouds (broken clouds: 51-84%)
humidity: 83%, clouds: 79%
10:00
46°F
2km/h
feels like 46°F, Clouds (overcast clouds: 85-100%)
humidity: 76%, clouds: 100%
13:00
48°F
7km/h
feels like 46°F, Clouds (overcast clouds: 85-100%)
humidity: 73%, clouds: 86%
16:00
48°F
10km/h
feels like 46°F, Clouds (scattered clouds: 25-50%)
humidity: 72%, clouds: 50%
19:00
48°F
11km/h
feels like 45°F, Clouds (scattered clouds: 25-50%)
humidity: 75%, clouds: 45%
22:00
45°F
10km/h
feels like 42°F, Clouds (broken clouds: 51-84%)
humidity: 80%, clouds: 62%
APRIL 15
01:00
43°F
8km/h
feels like 40°F, Clouds (broken clouds: 51-84%)
humidity: 78%, clouds: 76%
04:00
42°F
7km/h
feels like 40°F, Clouds (overcast clouds: 85-100%)
humidity: 74%, clouds: 90%
Kilmichael Point, Ireland
Kilmichael Point, Ireland | © Andrew Sykes

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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