Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average sea temperature in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
July
Weather in July
Temperature
Portmarnock reaches its highest average temperatures in July, measuring 17.4°C (63.3°F) at the peak and 12.1°C (53.8°F) at the lowest.Humidity
The months with the highest humidity in Portmarnock are July and December, with an average relative humidity of 86%.Rainfall
In Portmarnock, during July, the rain falls for 17.1 days and regularly aggregates up to 33mm (1.3") of precipitation. In Portmarnock, during the entire year, the rain falls for 159.4 days and collects up to 362mm (14.25") of precipitation.Snowfall
In Portmarnock, snow does not fall in April through October.Sea temperature
In July, the average sea temperature is 14.1°C (57.4°F).Note: Dipping into 14.1°C (57.4°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 13°C (55.4°F) can be jarring.
Daylight
The average length of the day in July in Portmarnock, Ireland, is 16h and 25min.On the first day of the month, sunrise is at 5:00 am and sunset at 9:56 pm. On the last day of July, in Portmarnock, Ireland, sunrise is at 5:39 am and sunset at 9:21 pm IST.
Sunshine
In July, the average sunshine in Portmarnock, Ireland, is 7h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 4 in July interprets into the following advice:
Exercise prevention - Warding off sunburn is urged. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest in Portmarnock?
What is the usual temperature for Portmarnock in July?
What are the most humid months in Portmarnock?
What is the average humidity in July in Portmarnock?
How many days does it rain in July in Portmarnock?
When it does not snow in Portmarnock?
How cold is the water in July in Portmarnock?
What is the average length of the day in July in Portmarnock?
When is the sunrise / sunset in July in Portmarnock?
How long on average sun shines in July in Portmarnock?
When is the highest UV index in Portmarnock?
How high is the UV index in July in Portmarnock?
Average temperature in July
Portmarnock, Ireland
- Average high temperature in July: 17.4°C
The warmest month (with the highest average high temperature) is July (17.4°C).
The month with the lowest average high temperature is January (7.6°C).
- Average low temperature in July: 12.1°C
The months with the highest average low temperature are July and August (12.1°C).
The coldest months (with the lowest average low temperature) are February and March (3.9°C).
Average pressure in July
Portmarnock, Ireland
- Average pressure in July: 1013.9mbar
The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.2mbar).
Average wind speed in July
Portmarnock, Ireland
- Average wind speed in July: 15.3km/h
The windiest month (with the highest average wind speed) is January (24.2km/h).
The calmest month (with the lowest average wind speed) is June (15.2km/h).
Average humidity in July
Portmarnock, Ireland
- Average humidity in July: 86%
The months with the highest relative humidity are July and December (86%).
The months with the lowest relative humidity are March, April and May (83%).
Average rainfall in July
Portmarnock, Ireland
- Average rainfall in July: 33mm
The wettest month (with the highest rainfall) is November (51mm).
The driest month (with the least rainfall) is May (19mm).
Average rainfall days in July
Portmarnock, Ireland
- Average rainfall days in July: 17.1 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (10.7 days).
Average snowfall in July
Portmarnock, Ireland
- Average snowfall in July: 0mm
The month with the highest snowfall is December (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in July
Portmarnock, Ireland
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in July
Portmarnock, 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).
Average daylight in July /
Average sunshine in July
Portmarnock, 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 0min
The months with the most sunshine are April, May and June (Average sunshine: 7h and 30min).
The months with the least sunshine are January, February and November (Average sunshine: 4h and 18min).
Average sunshine days in July
Portmarnock, Ireland
- Average sunshine days in July: 11 days
The months with the most sunshine days are January and December (16.8 days).
The month with the least sunshine days is July (11 days).
Average UV index in July
Portmarnock, 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).
Average cloud cover in July
Portmarnock, Ireland
- Average cloud cover in July: 56
The months with the most cloud cover are January and February (Cloud cover 57).
The months with the least cloud cover are April and September (Cloud cover 50).
Average visibility in July
Portmarnock, Ireland
- Average visibility in July: 9km
The months with the highest visibility are January, February, March, October, November and December (10km).
The months with the lowest visibility are April, May, June, July, August and September (9km).
