January Weather in Portslade, United Kingdom

Last updated: August 27, 2025

In January, the average temperature in Portslade, United Kingdom hovers around 7°C (45°F). Expect a minimum of 1°C (35°F) and a maximum of 13°C (55°F), creating a brisk setting. With 74 mm (2.9 in) of precipitation spread over 12 days, don’t forget your umbrella! The air is also quite humid, with an average humidity level of 91%—perfect for cozy indoor activities.

January Temperature in Portslade

In January in Portslade, the average temperature is 7°C (45°F). Maximum temperatures can reach 13°C (55°F), while minimums can drop as low as 1°C (35°F). It's advisable to pack layers and a warm jacket for your travels during this time.

January Weather in Portslade: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Portslade, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portslade, January typically has an average temperature of 7°C (45°F), with highs reaching up to 13°C (55°F) and lows dropping to around 1°C (35°F).

Data source: Temperature data for Portslade generated using information from the Copernicus Climate Change Service.

January Precipitation in Portslade

In Portslade in January, the precipitation amount is 74 mm (2.9 in) over a span of 12 days.

January Precipitation Trends in Portslade

The chart displays monthly precipitation patterns in Portslade, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Portslade, January typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Portslade

In Portslade in January humidity is 91%. With an average temperature of 7°C (45°F), this humidity feels like a thick blanket wrapping around you, making it difficult to stay comfortable while traveling.

January Average Humidity in Portslade

This chart illustrates the average monthly humidity levels in Portslade, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Portslade is approximately 91%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Portslade

In Portslade in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Portslade, you can visit Hourly UV Index in Portslade.

Maximum UV Index Levels in Portslade for January

The chart shows the monthly maximum UV Index (UVI) for Portslade in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Portslade typically reaches 2, which falls under the low exposure category.

Data source: Portslade January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Portslade Compares to Other Months

Weather in Portslade varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Portslade, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Portslade, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	74 mm (2.9 inches)	91%	low
February Weather	7°C (45°F)	78 mm (3.1 inches)	89%	low
March Weather	8°C (47°F)	67 mm (2.6 inches)	86%	moderate
April Weather	9°C (49°F)	29 mm (1.2 inches)	85%	high
May Weather	12°C (54°F)	47 mm (1.8 inches)	79%	high
June Weather	15°C (59°F)	65 mm (2.6 inches)	80%	very high
July Weather	17°C (63°F)	52 mm (2.0 inches)	71%	very high
August Weather	18°C (64°F)	74 mm (2.9 inches)	76%	high
September Weather	16°C (62°F)	63 mm (2.5 inches)	82%	high
October Weather	14°C (58°F)	129 mm (5.1 inches)	90%	moderate
November Weather	11°C (52°F)	110 mm (4.3 inches)	92%	low
December Weather	9°C (48°F)	138 mm (5.4 inches)	92%	low