July weather forecast
Dún Laoghaire, Ireland

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Weather in July

July in Dún Laoghaire, Ireland, is an enjoyable summer month, with an average temperature ranging between min 12.3°C (54.1°F) and max 16.9°C (62.4°F).

Temperature

The warmest months are July and August, with an average high-temperature of 16.9°C (62.4°F).

Humidity

The most humid month in Dún Laoghaire, Ireland, is July, with an average relative humidity of 86%.

Rainfall

In Dún Laoghaire, in July, during 20.4 rainfall days, 46mm (1.81") of precipitation is typically accumulated. Throughout the year, there are 200.5 rainfall days, and 530mm (20.87") of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Sea temperature

In July, the average sea temperature in Dún Laoghaire is 14.1°C (57.4°F).
Note: Being in 14.1°C (57.4°F) waters at 13°C (55.4°F) is discomforting, but anything below 10°C (50°F) can jeopardize breathing and induce cold shock, factoring in physical endurance.

Daylight

In July, the average length of the day in Dún Laoghaire is 16h and 24min.
On the first day of the month, sunrise is at 5:01 am and sunset at 9:55 pm. On the last day of July, sunrise is at 5:40 am and sunset at 9:21 pm IST.

Sunshine

In July, the average sunshine in Dún Laoghaire is 7.5h.

UV index

May through September, with an average maximum UV index of 4, are months with the highest UV index in Dún Laoghaire. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In July, the maximum UV index of 4 suggests these recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
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Frequently asked questions

What is the hottest time of year in Dún Laoghaire?

Dún Laoghaire's average highest temperatures are recorded in July and August, reaching a high of 16.9°C (62.4°F).

What is the average July temperature in Dún Laoghaire?

In July, in Dún Laoghaire, the average high-temperature is 16.9°C (62.4°F), and the average low-temperature is 12.3°C (54.1°F).

What is the most humid month in Dún Laoghaire?

The most humid month is July, with an average relative humidity of 86%.

What is the average humidity in July in Dún Laoghaire?

In Dún Laoghaire, the average relative humidity in July is 86%.

How many days does it rain in July in Dún Laoghaire?

In Dún Laoghaire, during July, the rain falls for 20.4 days and regularly aggregates up to 46mm (1.81") of precipitation.

When it does not snow in Dún Laoghaire?

April through October are months without snowfall in Dún Laoghaire, Ireland.

How cold is the water in July in Dún Laoghaire?

In Dún Laoghaire, the average seawater temperature in July is 14.1°C (57.4°F). Swimming in 14.1°C (57.4°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Dún Laoghaire have in July?

In Dún Laoghaire, Ireland, the average day length in July is 16h and 24min.

When are sunrise and sunset in July in Dún Laoghaire?

In July, on the first day of the month, sunrise is at 5:01 am and sunset at 9:55 pm. On the last day of the month, in Dún Laoghaire, Ireland, sunrise is at 5:40 am and sunset at 9:21 pm IST.

How many hours of sunshine does Dún Laoghaire have in July?

In July, the average sunshine duration is 7.5h.

What is the month with the highest UV index in Dún Laoghaire?

The months with the highest UV index are May through September, with an average maximum UV index of 4.

What is the UV index intensity in July in Dún Laoghaire?

In Dún Laoghaire, the average daily maximum UV index in July is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Dún Laoghaire, Ireland

Average temperature in July - Dún Laoghaire, Ireland
  • Average high temperature in July: 16.9°C

The warmest months (with the highest average high temperature) are July and August (16.9°C).
The months with the lowest average high temperature are January and February (7.8°C).

  • Average low temperature in July: 12.3°C

The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is February (4.4°C).

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Average pressure in July
Dún Laoghaire, Ireland

Average pressure in July - Dún Laoghaire, Ireland
  • Average pressure in July: 1014mbar

The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.3mbar).

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Average wind speed in July
Dún Laoghaire, Ireland

Average wind speed in July - Dún Laoghaire, Ireland
  • Average wind speed in July: 15.9km/h

The windiest month (with the highest average wind speed) is December (25.9km/h).
The calmest month (with the lowest average wind speed) is July (15.9km/h).

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Average humidity in July
Dún Laoghaire, Ireland

Average humidity in July - Dún Laoghaire, Ireland
  • Average humidity in July: 86%

The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is March (82%).

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Average rainfall in July
Dún Laoghaire, Ireland

Average rainfall in July - Dún Laoghaire, Ireland
  • Average rainfall in July: 46mm

The wettest month (with the highest rainfall) is November (71mm).
The driest month (with the least rainfall) is May (27mm).

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Average rainfall days in July
Dún Laoghaire, Ireland

Average rainfall days in July - Dún Laoghaire, Ireland
  • Average rainfall days in July: 20.4 days

The month with the highest number of rainy days is July (20.4 days).
The months with the least rainy days are March and September (14.9 days).

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Average snowfall in July
Dún Laoghaire, Ireland

Average snowfall in July - Dún Laoghaire, Ireland
  • Average snowfall in July: 0mm

The month with the highest snowfall is December (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in July
Dún Laoghaire, Ireland

Average snowfall days in July - Dún Laoghaire, Ireland
  • Average snowfall days in July: 0 days

The months with the highest number of snowfall days are January and February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in July
Dún Laoghaire, Ireland

Average sea temperature in July - Dún Laoghaire, Ireland
  • Average sea temperature in July: 14.1°C

The best month for swimming (with the highest average sea temperature) is August (14.9°C).
The coldest month (with the lowest average sea temperature) is March (8.4°C).

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Average daylight in July /
Average sunshine in July
Dún Laoghaire, Ireland

Average daylight in July / Average sunshine in July - Dún Laoghaire, Ireland
  • Average daylight in July: 16h and 2min

The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).

  • Average sunshine in July: 7h and 3min

The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is November (Average sunshine: 4h and 18min).

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Average sunshine days in July
Dún Laoghaire, Ireland

Average sunshine days in July - Dún Laoghaire, Ireland
  • Average sunshine days in July: 7.2 days

The month with the most sunshine days is April (11.7 days).
The month with the least sunshine days is July (7.2 days).

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Average UV index in July
Dún Laoghaire, Ireland

Average UV index in July - Dún Laoghaire, Ireland
  • Average UV index in July: 4

The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in July
Dún Laoghaire, Ireland

Average cloud cover in July - Dún Laoghaire, Ireland
  • Average cloud cover in July: 54

The months with the most cloud cover are February and November (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 48).

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Average visibility in July
Dún Laoghaire, Ireland

Average visibility in July - Dún Laoghaire, Ireland
  • Average visibility in July: 9km

The months with the highest visibility are January, March, October and November (10km).
The months with the lowest visibility are February, April, May, June, July, August, September and December (9km).

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Dún Laoghaire, Ireland

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