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
Weather in October
Temperature
The beginning of October reveals an average high-temperature of a still mild 13.6°C (56.5°F), showing minimal deviation from the previous month. Registering an almost steady temperature, Holyhead's nights in October see an average low of 11.8°C (53.2°F).Humidity
The average relative humidity in October is 80%.Rainfall
In Holyhead, in October, it is raining for 20.7 days, with typically 77mm (3.03") of accumulated precipitation. Throughout the year, in Holyhead, there are 233.6 rainfall days, and 739mm (29.09") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Sea temperature
In October, the average sea temperature is 14.2°C (57.6°F).Note: Swimming in 14.2°C (57.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
Daylight
In October, the average length of the day is 10h and 34min.On the first day of the month, sunrise is at 7:21 am and sunset at 6:54 pm BST. On the last day of October, in Holyhead, sunrise is at 7:16 am and sunset at 4:47 pm GMT.
Note: On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends, and the time zone changes from BST to GMT. Daylight Saving Time starts again on Sunday, 30. March 2025, at 1:00 am; consequently, the time zone reverts from GMT to BST.
Sunshine
In Holyhead, the average sunshine in October is 4.3h.UV index
The average daily maximum UV index in October in Holyhead is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 3 during October translates into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What is the usual temperature for Holyhead in October?
What is the average humidity in October in Holyhead?
How many days does it rain in October in Holyhead?
When it does not snow in Holyhead?
Does it snow in Holyhead in October?
What is the water temperature in October in Holyhead?
What is the average length of the day in October in Holyhead?
What time are sunrise and sunset in October in Holyhead?
When does Daylight Saving Time (DST) end in October in Holyhead?
How long on average sun shines in October in Holyhead?
How high is the UV index in October in Holyhead?
Average temperature in October
Holyhead, United Kingdom
- Average high temperature in October: 13.6°C
The warmest month (with the highest average high temperature) is August (16.6°C).
The month with the lowest average high temperature is February (7.8°C).
- Average low temperature in October: 11.8°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).
Average pressure in October
Holyhead, United Kingdom
- Average pressure in October: 1013.3mbar
The month with the highest atmospheric pressure is May (1016.1mbar).
The month with the lowest atmospheric pressure is November (1008.7mbar).
Average wind speed in October
Holyhead, United Kingdom
- Average wind speed in October: 25.8km/h
The windiest month (with the highest average wind speed) is December (31.3km/h).
The calmest month (with the lowest average wind speed) is June (18.7km/h).
Average humidity in October
Holyhead, United Kingdom
- Average humidity in October: 80%
The months with the highest relative humidity are July and August (84%).
The month with the lowest relative humidity is November (79%).
Average rainfall in October
Holyhead, United Kingdom
- Average rainfall in October: 77mm
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is May (36mm).
Average rainfall days in October
Holyhead, United Kingdom
- Average rainfall days in October: 20.7 days
The month with the highest number of rainy days is August (23.4 days).
The month with the least rainy days is April (15.6 days).
Average snowfall in October
Holyhead, United Kingdom
- Average snowfall in October: 0mm
The months with the highest snowfall are January and December (4mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in October
Holyhead, United Kingdom
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is January (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in October
Holyhead, United Kingdom
- Average sea temperature in October: 14.2°C
The best month for swimming (with the highest average sea temperature) is September (15.2°C).
The coldest month (with the lowest average sea temperature) is March (8.3°C).
Average daylight in October /
Average sunshine in October
Holyhead, United Kingdom
- 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 month with the most sunshine is May (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in October
Holyhead, United Kingdom
- Average sunshine days in October: 5.9 days
The month with the most sunshine days is May (12.3 days).
The month with the least sunshine days is December (4.3 days).
Average UV index in October
Holyhead, United Kingdom
- 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 and December (UV index 2).
Average cloud cover in October
Holyhead, United Kingdom
- Average cloud cover in October: 58
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is May (Cloud cover 46).
Average visibility in October
Holyhead, United Kingdom
- Average visibility in October: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
Holyhead, United Kingdom
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