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 sea temperature 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
Weather in January
Temperature
The advent of January brings an average high-temperature of a chilly 9.6°C (49.3°F), almost identical to the preceding month. Throughout January, Porthleven observes a steady low-temperature average of 7.8°C (46°F), reflecting a minor dip from daytime highs.Humidity
The average relative humidity in January in Porthleven, United Kingdom, is 80%.Rainfall
In Porthleven, United Kingdom, in January, during 20.7 rainfall days, 62mm (2.44") of precipitation is typically accumulated. Throughout the year, there are 204.9 rainfall days, and 617mm (24.29") of precipitation is accumulated.Snowfall
Months with snowfall in Porthleven are January and February. January is the first month it typically snows in Porthleven. Throughout January, in the average 0.3 snowfall days, it receives 2mm (0.08") of snow. Throughout the year, there are 1.2 snowfall days, and 5mm (0.2") of snow is accumulated.Sea temperature
In January, the average sea temperature in Porthleven, United Kingdom, is 10.4°C (50.7°F).Note: Danger awaits those who swim in 10.4°C (50.7°F) without protection. Falling below 10°C (50°F) means intense cold shock and hyperventilation.
Daylight
The average length of the day in January in Porthleven is 8h and 38min.On the first day of January in Porthleven, sunrise is at 8:20 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 5:12 pm GMT.
Sunshine
In January, the average sunshine is 4h.UV index
January is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 2 in January interprets into the following advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To guard against the harmful effects of the Sun, minimize exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
What is the temperature in January in Porthleven?
What is the average humidity in January in Porthleven?
How many days does it rain in January in Porthleven?
When does it start to snow in Porthleven?
What is the sea water temperature in January in Porthleven?
How many hours of daylight does Porthleven have in January?
When are sunrise and sunset in January in Porthleven?
How long on average sun shines in January in Porthleven?
What is the month with the lowest UV index in Porthleven?
What is the UV index reading in January in Porthleven?
Average temperature in January
Porthleven, United Kingdom
- Average high temperature in January: 9.6°C
The warmest month (with the highest average high temperature) is August (17.4°C).
The month with the lowest average high temperature is February (9.3°C).
- Average low temperature in January: 7.8°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7.1°C).
Average pressure in January
Porthleven, United Kingdom
- Average pressure in January: 1014.9mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in January
Porthleven, United Kingdom
- Average wind speed in January: 31.5km/h
The windiest month (with the highest average wind speed) is December (32.9km/h).
The calmest month (with the lowest average wind speed) is July (20.8km/h).
Average humidity in January
Porthleven, United Kingdom
- Average humidity in January: 80%
The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are February, November and December (79%).
Average rainfall in January
Porthleven, United Kingdom
- Average rainfall in January: 62mm
The wettest month (with the highest rainfall) is November (91mm).
The driest month (with the least rainfall) is May (29mm).
Average rainfall days in January
Porthleven, United Kingdom
- Average rainfall days in January: 20.7 days
The month with the highest number of rainy days is December (21.7 days).
The month with the least rainy days is May (13.6 days).
Average snowfall in January
Porthleven, United Kingdom
- Average snowfall in January: 2mm
The month with the highest snowfall is February (3mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in January
Porthleven, United Kingdom
- Average snowfall days in January: 0.3 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in January
Porthleven, United Kingdom
- Average sea temperature in January: 10.4°C
The best month for swimming (with the highest average sea temperature) is August (17.1°C).
The coldest month (with the lowest average sea temperature) is March (9.7°C).
Average daylight in January /
Average sunshine in January
Porthleven, United Kingdom
- Average daylight in January: 8h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in January: 4h and 0min
The months with the most sunshine are April and July (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in January
Porthleven, United Kingdom
- Average sunshine days in January: 6.5 days
The month with the most sunshine days is May (14.8 days).
The month with the least sunshine days is November (5.3 days).
Average UV index in January
Porthleven, United Kingdom
- Average UV index in January: 2
The month with the highest UV index is August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in January
Porthleven, United Kingdom
- Average cloud cover in January: 61
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 43).
Average visibility in January
Porthleven, United Kingdom
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Porthleven, United Kingdom
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