May weather forecastAlmada, Portugal
May
Weather in May
May in Almada is characterised by longer days and the beginnings of summertime warmth. Amid the increase in temperature, the city experiences a dramatic drop in rainfall down to as low as 5mm (0.2"), delivering fewer rainy days and less cloud coverage. The sea temperature starts to rise, making beach activities and bathing more enjoyable at this time. The skies are clearer, revealing more hours of sunshine and a higher UV Index to the residents and visitors alike. This is truly the start of the dry season, with lighter winds and lesser rain showers.Temperature
The start of May in Almada brings a subtle rise in the average high-temperature, moving from an enjoyable 18.6°C (65.5°F) in April to a pleasant 21.8°C (71.2°F). May brings Almada a consistent average low-temperature of 14.8°C (58.6°F).Humidity
The average relative humidity in May is 69%.Rainfall
In May, in Almada, the rain falls for 3.8 days. Throughout May, 5mm (0.2") of precipitation is accumulated. In Almada, Portugal, during the entire year, the rain falls for 54.2 days and collects up to 61mm (2.4") of precipitation.Sea temperature
In Almada, in May, the average water temperature is 17.4°C (63.3°F).Note: The majority of people find swimming in 17.4°C (63.3°F) unenjoyable. As the water temperature decreases from 21°C (69.8°F) to 15°C (59°F), breathing becomes more challenging to control.
Daylight
The average length of the day in May is 14h and 17min.On the first day of the month, sunrise is at 06:38 and sunset at 20:29. On the last day of May, in Almada, Portugal, sunrise is at 06:13 and sunset at 20:54 WEST.
Sunshine
In Almada, the average sunshine in May is 10.6h.UV index
May through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: During May, 6 as the daily maximum UV index converts into the following advice:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Almada, Portugal
- Average high temperature in May: 21.8°C
The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (14.9°C).
- Average low temperature in May: 14.8°C
The month with the highest average low temperature is July (17.9°C).
The coldest month (with the lowest average low temperature) is February (9.8°C).
Average pressure in May
Almada, Portugal
- Average pressure in May: 1016.5mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in May
Almada, Portugal
- Average wind speed in May: 15.4km/h
The windiest month (with the highest average wind speed) is February (16.5km/h).
The calmest month (with the lowest average wind speed) is September (13.1km/h).
Average humidity in May
Almada, Portugal
- Average humidity in May: 69%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (68%).
Average rainfall in May
Almada, Portugal
- Average rainfall in May: 5mm
The wettest month (with the highest rainfall) is November (15mm).
The driest months (with the least rainfall) are June, July and August (1mm).
Average rainfall days in May
Almada, Portugal
- Average rainfall days in May: 3.8 days
The month with the highest number of rainy days is November (9.3 days).
The month with the least rainy days is August (0.8 days).
Average sea temperature in May
Almada, 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
Almada, 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 24min).
Average sunshine days in May
Almada, Portugal
- Average sunshine days in May: 24.7 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is November (17.7 days).
Average UV index in May
Almada, Portugal
- Average UV index in May: 6
The months with the highest UV index are May, 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
Almada, 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
Almada, 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).
