March weather forecast
Porto Santo Island, Portugal

Porto Santo Island noticeably starts to warm up in March, a promising sign of the forthcoming spring. The increase in temperature is gradual and accommodating, allowing one to freely explore the island's beaches and hilltops. As the days grow longer, there are more ample opportunities to catch some rays and engage in water-based activities. The monthly rainfall drops to 44mm (1.73"), occurring approximately on 9 days, depicting a decrease compared to the previous months. A shift in weather pattern also commences with the relative humidity decreasing slightly to 76%, indicative of the drier air typical of springtime.

Temperature

Transitioning from February to March, Porto Santo Island observes an average high-temperature of a still refreshing 18.6°C (65.5°F), differing subtly from the previous month. March nights are marked by an average temperature drop to a still refreshing 13.6°C (56.5°F).

Humidity

The average relative humidity in March is 76%.

Rainfall

In March, the rain falls for 9 days. Throughout March, 44mm (1.73") of precipitation is accumulated. Throughout the year, there are 97 rainfall days, and 382mm (15.04") of precipitation is accumulated.

Sea temperature

March is the month with the coldest seawater in Porto Santo Island, with an average sea temperature of 17.5°C (63.5°F).
Note: In 17.5°C (63.5°F), swimming is not an enjoyable activity for most. The challenge of managing one's breathing increases as the temperature goes under 21°C (69.8°F).

Daylight

In Porto Santo Island, the average length of the day in March is 12h and 0min.
On the first day of the month, sunrise is at 07:32 and sunset at 19:02. On the last day of March, sunrise is at 06:53 and sunset at 19:25 WET.

Sunshine

The average sunshine in March in Porto Santo Island is 6h.

UV index

In Porto Santo Island, the average daily maximum UV index in March is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 6 during March, leads to the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.