May weather forecastCacilhas, Portugal
May
Weather in May
May, the last month of the spring in Cacilhas, is an agreeable month, with temperature in the range of an average low of 15.3°C (59.5°F) and an average high of 20.1°C (68.2°F).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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 18min
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 36min
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).
