May weather forecast
Almada, Portugal

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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.
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Frequently asked questions

What are the temperatures in Almada in May?

The high-temperature in Almada during May is 21.8°C (71.2°F) and the low-temperature is 14.8°C (58.6°F).

What is the average humidity in May in Almada?

In May, the average relative humidity in Almada is 69%.

How many days does it rain in May in Almada?

In Almada, Portugal, during May, the rain falls for 3.8 days and regularly aggregates up to 5mm (0.2") of precipitation.

How cold is the water in May in Almada?

In Almada, the average seawater temperature in May is 17.4°C (63.3°F). For swimming, a surface water temperature of 17.4°C (63.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Almada have in May?

In Almada, the average day length in May is 14h and 17min.

When is the sunrise / sunset in May in Almada?

On the first day of May in Almada, Portugal, sunrise is at 06:38 and sunset at 20:29. On the last day of the month, sunrise is at 06:13 and sunset at 20:54 WEST.

How many hours of sunshine does Almada have in May?

In Almada, the average sunshine duration in May is 10.6h.

What are the months with the highest UV index in Almada?

The months with the highest UV index in Almada are May through September, with an average maximum UV index of 6.

How high is the UV index in May in Almada?

The average daily maximum UV index in May in Almada is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.

Average temperature in May
Almada, Portugal

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).

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Average pressure in May
Almada, Portugal

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).

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Average wind speed in May
Almada, Portugal

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).

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Average humidity in May
Almada, Portugal

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%).

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Average rainfall in May
Almada, Portugal

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).

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Average rainfall days in May
Almada, Portugal

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).

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Average sea temperature in May
Almada, Portugal

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).

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Average daylight in May /
Average sunshine in May
Almada, Portugal

Average daylight in May / Average sunshine in May - Almada, 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 24min).

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Average sunshine days in May
Almada, Portugal

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).

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Average UV index in May
Almada, Portugal

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).

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Average cloud cover in May
Almada, Portugal

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).

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Average visibility in May
Almada, Portugal

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).

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Almada, Portugal

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