January weather forecastPlymouth, United Kingdom

January

Weather in January

In the city of Plymouth, the New Year starts briskly, with cooler temperatures defining January. The year kicks off with abundant rainfall, exceeding any other month at 108mm (4.25"). Widespread showers will create a crisp scenery. An increase in weather activity is evident with the uptick in moody clouds and showers. Despite this, residents keep resolute, focusing on prospects and beginnings of the year.

Temperature

In Plymouth, United Kingdom, January and February are characterised by the lowest temperatures, recording an average high of 8.8°C (47.8°F).

Rainfall

In Plymouth, in January, it is raining for 15.1 days, with typically 108mm (4.25") of accumulated precipitation. In Plymouth, during the entire year, the rain falls for 142.2 days and collects up to 1007mm (39.65") of precipitation.

Sea temperature

In January, the average sea temperature is 10.3°C (50.5°F).
Note: Without suitable protection, venturing into 10.3°C (50.5°F) waters cooler than 10°C (50°F) can lead to pronounced cold shock and rapid breaths.

Daylight

The average length of the day in January in Plymouth is 8h and 36min.
On the first day of January, sunrise is at 8:16 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:06 pm GMT.

Sunshine

The average sunshine in January in Plymouth is 2h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 1 during January translates into the following directions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Updated: Feb 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The coldest period in Plymouth, with an average high-temperature of 8.8°C (47.8°F), falls in January and February.

During January, Plymouth experiences an average high-temperature of 8.8°C (47.8°F) and a low-temperature of 4°C (39.2°F).

In Plymouth, United Kingdom, during January, the rain falls for 15.1 days and regularly aggregates up to 108mm (4.25") of precipitation.

In Plymouth, in January, the average water temperature is 10.3°C (50.5°F). Swimming in 10.3°C (50.5°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

The average day length in January in Plymouth, United Kingdom, is 8h and 36min.

On the first day of January in Plymouth, United Kingdom, sunrise is at 8:16 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:06 pm GMT.

The average sunshine duration in January in Plymouth, United Kingdom, is 2h.

The months with the lowest UV index in Plymouth, United Kingdom, are January, February, November and December, with an average maximum UV index of 1.

In Plymouth, the average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

9.5°C

8.8°C

Average low temperature

Average rainfall

Average rainfall days

14.5

15.1

11.6

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in January
Plymouth, United Kingdom

Average high temperature in January: 8.8°C

The warmest month (with the highest average high temperature) is August (20°C).
The months with the lowest average high temperature are January and February (8.8°C).

Average low temperature in January: 4°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 (3.6°C).

Average rainfall in January
Plymouth, United Kingdom

Average rainfall in January: 108.3mm

The wettest month (with the highest rainfall) is December (118.8mm).
The driest month (with the least rainfall) is June (57.2mm).

Average rainfall days in January
Plymouth, United Kingdom

Average rainfall days in January: 15.1 days

The month with the highest number of rainy days is January (15.1 days).
The month with the least rainy days is June (8.5 days).

Average sea temperature in January
Plymouth, United Kingdom

Average sea temperature in January: 10.3°C

The best month for swimming (with the highest average sea temperature) is August (16.9°C).
The coldest month (with the lowest average sea temperature) is March (9.5°C).

Average daylight in January /
Average sunshine in January
Plymouth, United Kingdom

Average daylight in January: 8h and 36min

The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).

Average sunshine in January: 2h and 0min

The month with the most sunshine is June (Average sunshine: 7h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).

Average UV index in January
Plymouth, United Kingdom

Average UV index in January: 1

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).