May weather forecast
Coimbra, Portugal

May in Coimbra ushers in a distinctly warmer and sunnier phase of the year. Rainfall decreases considerably, making room for more sun-bathing hours and a higher UV index. Unquestionably, the weather in May reflects the commencement of summer, painting the city in vivid, sun-drenched hues. This noticeable change in weather pattern offers a promising time for outdoor activities and sightseeing in Coimbra.

Temperature

May's arrival registers an average high-temperature of an agreeable 22.4°C (72.3°F), closely aligning with the temperature of the previous month. In the month of May, the nighttime temperature dips to a steady average of 11.4°C (52.5°F).

Rainfall

In Coimbra, during May, the rain falls for 12 days and regularly aggregates up to 80mm (3.15") of precipitation. Throughout the year, there are 145 rainfall days, and 905mm (35.63") of precipitation is accumulated.

Daylight

In May, the average length of the day in Coimbra is 14h and 25min.
On the first day of the month, sunrise is at 06:32 and sunset at 20:28. On the last day of May, in Coimbra, sunrise is at 06:06 and sunset at 20:56 WEST.

Sunshine

In Coimbra, the average sunshine in May is 8h.

UV index

The average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 in May transforms into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.