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 sea temperature 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
Weather in May
Temperature
The advent of May denotes an average high-temperature of an agreeable 20.1°C (68.2°F), subtly different from April's 17.6°C (63.7°F). Cacilhas, during the nights of May, averages a temperature close to its daytime high, at a refreshing 15.3°C (59.5°F).Humidity
May and October, with an average relative humidity of 72%, are the least humid months in Cacilhas.Rainfall
In Cacilhas, Portugal, in May, during 6.9 rainfall days, 17mm (0.67") of precipitation is typically accumulated. Throughout the year, there are 85.8 rainfall days, and 215mm (8.46") of precipitation is accumulated.Sea temperature
In May, the average sea temperature is 17.4°C (63.3°F).Note: Swimming is not a pleasurable activity for most people when the water temperature is 17.4°C (63.3°F). Breathing control gets harder as the water temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Cacilhas, the average length of the day in May is 14h and 17min.On the first day of May in Cacilhas, sunrise is at 06:38 and sunset at 20:28. On the last day of the month, sunrise is at 06:13 and sunset at 20:54 WEST.
Sunshine
The average sunshine in May is 10.6h.UV index
The average daily maximum UV index in May in Cacilhas is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In May, a regular UV index of 5 translates into these guidelines:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What are the temperatures in Cacilhas in May?
What is the least humid month in Cacilhas?
What is the average humidity in May in Cacilhas?
How many days does it rain in May in Cacilhas?
What is the sea water temperature in May in Cacilhas?
How many hours of daylight does Cacilhas have in May?
When are sunrise and sunset in May in Cacilhas?
How long on average sun shines in May in Cacilhas?
What is the UV index reading in May in Cacilhas?
Average temperature in May
Cacilhas, Portugal
- Average high temperature in May: 20.1°C
The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (14.8°C).
- Average low temperature in May: 15.3°C
The month with the highest average low temperature is August (18.6°C).
The coldest month (with the lowest average low temperature) is February (10.8°C).
Average pressure in May
Cacilhas, Portugal
- Average pressure in May: 1016.6mbar
The months with the highest atmospheric pressure are January and December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in May
Cacilhas, Portugal
- Average wind speed in May: 18.2km/h
The windiest month (with the highest average wind speed) is February (19.5km/h).
The calmest month (with the lowest average wind speed) is October (15.6km/h).
Average humidity in May
Cacilhas, Portugal
- Average humidity in May: 72%
The months with the highest relative humidity are January, April, July and December (75%).
The months with the lowest relative humidity are May and October (72%).
Average rainfall in May
Cacilhas, Portugal
- Average rainfall in May: 17mm
The wettest month (with the highest rainfall) is November (44mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in May
Cacilhas, Portugal
- Average rainfall days in May: 6.9 days
The month with the highest number of rainy days is November (12.4 days).
The month with the least rainy days is August (1.9 days).
Average sea temperature in May
Cacilhas, Portugal
- Average sea temperature in May: 17.4°C
The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).
Average daylight in May /
Average sunshine in May
Cacilhas, Portugal
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in May
Cacilhas, Portugal
- Average sunshine days in May: 22.5 days
The month with the most sunshine days is August (28 days).
The month with the least sunshine days is November (15.6 days).
Average UV index in May
Cacilhas, Portugal
- Average UV index in May: 5
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in May
Cacilhas, Portugal
- Average cloud cover in May: 24
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Cacilhas, Portugal
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Cacilhas, Portugal
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