Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
The shift from April to May is marked by a slight increase in the average high-temperature, moving from a comfortable 17.7°C (63.9°F) to an agreeable 20.8°C (69.4°F). In the month of May, the nighttime temperature dips to a steady average of 12.5°C (54.5°F).Humidity
The average relative humidity in May is 73%.Rainfall
In Cacia, in May, it is raining for 10.6 days, with typically 37mm (1.46") of accumulated precipitation. Throughout the year, there are 125.8 rainfall days, and 623mm (24.53") of precipitation is accumulated.Daylight
The average length of the day in May is 14h and 28min.On the first day of May, sunrise is at 06:32 and sunset at 20:30. On the last day of the month, sunrise is at 06:05 and sunset at 20:58 WEST.
Sunshine
In May, the average sunshine is 10.2h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 5 in May leads to these guidelines:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How much does it rain in May?
How many hours of daylight does Cacia have in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Cacia have in May?
When is the highest UV index in Cacia?
What is the UV index reading in May?
Average temperature in May
Cacia, Portugal
- Average high temperature in May: 20.8°C
The warmest month (with the highest average high temperature) is August (25.4°C).
The month with the lowest average high temperature is January (13.3°C).
- Average low temperature in May: 12.5°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (7.6°C).
Average pressure in May
Cacia, Portugal
- Average pressure in May: 1016.4mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in May
Cacia, Portugal
- Average wind speed in May: 11.7km/h
The windiest month (with the highest average wind speed) is February (12.9km/h).
The calmest month (with the lowest average wind speed) is September (9.9km/h).
Average humidity in May
Cacia, Portugal
- Average humidity in May: 73%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (70%).
Average rainfall in May
Cacia, Portugal
- Average rainfall in May: 37mm
The wettest month (with the highest rainfall) is November (94mm).
The driest month (with the least rainfall) is July (6mm).
Average rainfall days in May
Cacia, Portugal
- Average rainfall days in May: 10.6 days
The month with the highest number of rainy days is November (14.9 days).
The month with the least rainy days is August (3.3 days).
Average daylight in May /
Average sunshine in May
Cacia, Portugal
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in May
Cacia, Portugal
- Average sunshine days in May: 18.8 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is November (12.9 days).
Average UV index in May
Cacia, Portugal
- Average UV index in May: 5
The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Cacia, Portugal
- Average cloud cover in May: 27
The month with the most cloud cover is January (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in May
Cacia, Portugal
- Average visibility in May: 9km
The months with the highest visibility are February, June and December (10km).
The months with the lowest visibility are January, March, April, May, July, August, September, October and November (9km).
