Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
With the advent of January, Portnahaven experiences an average high-temperature of a still chilly 8.3°C (46.9°F), mirroring a close resemblance to the previous month. In Portnahaven, January's low temperatures hover around a still chilly 6.5°C (43.7°F), reflecting a minor decrease from the daytime highs.Humidity
In January, the average relative humidity in Portnahaven, United Kingdom, is 78%.Rainfall
In Portnahaven, during January, the rain falls for 23.2 days and regularly aggregates up to 61mm (2.4") of precipitation. Throughout the year, there are 238.1 rainfall days, and 631mm (24.84") of precipitation is accumulated.Snowfall
January, March through November are months without snowfall in Portnahaven, United Kingdom.Daylight
In January, the average length of the day in Portnahaven is 7h and 47min.On the first day of January, sunrise is at 8:55 am and sunset at 4:03 pm. On the last day of the month, sunrise is at 8:21 am and sunset at 4:56 pm GMT.
Sunshine
January has the least sunshine of the year, with an average of 3.5h of sunshine.UV index
January, February and November, with an average maximum UV index of 2, are months with the lowest UV index in Portnahaven. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature in Portnahaven?
What is the average humidity in January in Portnahaven?
How much does it rain in Portnahaven in January?
When it does not snow in Portnahaven?
Does it snow in Portnahaven in January?
What is the average length of the day in January in Portnahaven?
What time are sunrise and sunset in January in Portnahaven?
What is the month with the least sunshine in Portnahaven?
How long on average sun shines in January in Portnahaven?
What is the month with the lowest UV index in Portnahaven?
What is the UV index intensity in January in Portnahaven?
Average temperature in January
Portnahaven, United Kingdom
- Average high temperature in January: 8.3°C
The warmest month (with the highest average high temperature) is August (15.3°C).
The month with the lowest average high temperature is February (7.8°C).
- Average low temperature in January: 6.5°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is February (6°C).
Average pressure in January
Portnahaven, United Kingdom
- Average pressure in January: 1008.3mbar
The month with the highest atmospheric pressure is May (1015.1mbar).
The month with the lowest atmospheric pressure is November (1006.3mbar).
Average wind speed in January
Portnahaven, United Kingdom
- Average wind speed in January: 38km/h
The windiest month (with the highest average wind speed) is January (38km/h).
The calmest month (with the lowest average wind speed) is June (21.8km/h).
Average humidity in January
Portnahaven, United Kingdom
- Average humidity in January: 78%
The months with the highest relative humidity are June, July and August (84%).
The month with the lowest relative humidity is November (76%).
Average rainfall in January
Portnahaven, United Kingdom
- Average rainfall in January: 61mm
The wettest month (with the highest rainfall) is December (74mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in January
Portnahaven, United Kingdom
- Average rainfall days in January: 23.2 days
The month with the highest number of rainy days is December (23.8 days).
The month with the least rainy days is April (15.4 days).
Average snowfall in January
Portnahaven, United Kingdom
- Average snowfall in January: 0mm
The month with the highest snowfall is December (2mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Portnahaven, United Kingdom
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is December (0.5 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Portnahaven, United Kingdom
- Average daylight in January: 7h and 5min
The month with the longest days is June (Average daylight: 17h and 24min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in January: 3h and 3min
The month with the most sunshine is June (Average sunshine: 8h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in January
Portnahaven, United Kingdom
- Average sunshine days in January: 4.9 days
The month with the most sunshine days is April (11.3 days).
The month with the least sunshine days is November (4.1 days).
Average UV index in January
Portnahaven, United Kingdom
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover in January
Portnahaven, United Kingdom
- Average cloud cover in January: 66
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are April and May (Cloud cover 51).
Average visibility in January
Portnahaven, United Kingdom
- Average visibility in January: 9km
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).
