March weather - Spring 2025 - London, United Kingdom

March signals the advent of spring in London, bringing a general uplifting mood due to the milder, more agreeable weather. The snowfall completely recedes, giving way to a largely frost-free environment. Relative to February, both temperatures and daylight hours start to increase, promising the arrival of more pleasant days. Prospects for April signal an even greater uplift in weather conditions. In March, an average relative humidity of 80%, the third highest in the year, keeps the air rather moist.

Temperature

The shift into March in London is accompanied by a modest temperature increase, with the average high-temperature edging up from a frosty 7.6°C (45.7°F) in February to a fresh 10.6°C (51.1°F). London in March experiences a low-temperature average of 3.7°C (38.7°F).

Humidity

In March, the average relative humidity is 80%.

Rainfall

In London, in March, during 11.5 rainfall days, 24mm (0.94") of precipitation is typically accumulated. Throughout the year, there are 151.7 rainfall days, and 370mm (14.57") of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in London. In March, in London, it is snowing for 1.2 days. Throughout March, 7mm (0.28") of snow is accumulated. In London, during the entire year, snow falls for 7.7 days and aggregates up to 50mm (1.97") of snow.

Daylight

In London, the average length of the day in March is 11h and 55min.
On the first day of the month, sunrise is at 6:44 am and sunset at 5:41 pm. On the last day of March, in London, sunrise is at 5:36 am and sunset at 6:32 pm GMT.

Sunshine

The average sunshine in March in London is 5.4h.

UV index

In London, the average daily maximum UV index in March is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 3 in March transforms into this advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.