Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average sea temperature in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
October
Weather in October
Temperature
At the start of October, Portmarnock's average high-temperature reaches a still refreshing 13.4°C (56.1°F), subtly different from the preceding month. Portmarnock's October nights observe a minor shift from the daytime temperatures, resulting in an average dip to a chilly 9.2°C (48.6°F).Humidity
The average relative humidity in October in Portmarnock, Ireland, is 85%.Rainfall
In Portmarnock, during October, the rain falls for 14 days and regularly aggregates up to 33mm (1.3") of precipitation. Throughout the year, in Portmarnock, there are 159.4 rainfall days, and 362mm (14.25") of precipitation is accumulated.Snowfall
In Portmarnock, snow does not fall in April through October.Sea temperature
In Portmarnock, the average seawater temperature in October is 14.1°C (57.4°F).Note: Swimming in 14.1°C (57.4°F) feels unbearing at 13°C (55.4°F) and can be life-risking below 10°C (50°F), causing breathing issues and cold shock, depending on a person's capacity.
Daylight
In Portmarnock, Ireland, the average length of the day in October is 10h and 34min.On the first day of the month, sunrise is at 7:27 am and sunset at 7:00 pm IST. On the last day of October, sunrise is at 7:22 am and sunset at 4:53 pm GMT.
Note: On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from IST to GMT. Daylight Saving Time lasts until Sunday, 30. March 2025, at 1:00 am; consequently, the time zone reverts from GMT to IST.
Sunshine
In Portmarnock, the average sunshine in October is 4.4h.UV index
In October, the average daily maximum UV index in Portmarnock, Ireland, is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In October, a daily maximum UV index of 3 leads to the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October in Portmarnock?
What is the average humidity in October in Portmarnock?
How many days does it rain in October in Portmarnock?
When it does not snow in Portmarnock?
Does it snow in Portmarnock in October?
What is the sea water temperature in October in Portmarnock?
How many hours of daylight does Portmarnock have in October?
What time are sunrise and sunset in October in Portmarnock?
When does Daylight Saving Time (DST) start in October in Portmarnock?
How long on average sun shines in October in Portmarnock?
What is the UV index reading in October in Portmarnock?
Average temperature in October
Portmarnock, Ireland
- Average high temperature in October: 13.4°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 October: 9.2°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 October
Portmarnock, Ireland
- Average pressure in October: 1012.6mbar
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 October
Portmarnock, Ireland
- Average wind speed in October: 19.6km/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 October
Portmarnock, Ireland
- Average humidity in October: 85%
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 October
Portmarnock, Ireland
- Average rainfall in October: 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 October
Portmarnock, Ireland
- Average rainfall days in October: 14 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 October
Portmarnock, Ireland
- Average snowfall in October: 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 October
Portmarnock, Ireland
- Average snowfall days in October: 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 October
Portmarnock, Ireland
- Average sea temperature in October: 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 October /
Average sunshine in October
Portmarnock, Ireland
- Average daylight in October: 10h and 4min
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 October: 4h and 2min
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 October
Portmarnock, Ireland
- Average sunshine days in October: 13.3 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 October
Portmarnock, Ireland
- Average UV index in October: 3
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 October
Portmarnock, Ireland
- Average cloud cover in October: 55
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 October
Portmarnock, Ireland
- Average visibility in October: 10km
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).
