May weather forecast
Sesimbra, Portugal

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Weather in May

May swoops in as an apparent herald of summer, with longer daylight hours and minimized rainfall issues. A consistently high sea temperature of 17.6°C (63.7°F) confirms the impending warm season. Compared to the humid April, May decrease the humidity down to 68%. This month gives a further taste of summer's warm days and cool nights to the legion of sun-chasers. Indeed, May showcases the onset of summer in Sesimbra with all its sunny glory.

Temperature

With the onset of May, Sesimbra observes a minor temperature ascent, with the average high-temperature adjusting from April's refreshing 19.4°C (66.9°F) to a pleasant 22.8°C (73°F). Sesimbra temperatures generally rest at a low of 14.3°C (57.7°F) during the May nights.

Humidity

In May, the average relative humidity is 68%.

Rainfall

In Sesimbra, Portugal, in May, during 7.4 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, there are 100.8 rainfall days, and 338mm (13.31") of precipitation is accumulated.

Sea temperature

In Sesimbra, in May, the average water temperature is 17.6°C (63.7°F).
Note: Swimming in 17.6°C (63.7°F) is not an enjoyable experience for most. Breathing becomes progressively more challenging as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Sesimbra, the average length of the day in May is 14h and 16min.
On the first day of the month, sunrise is at 06:38 and sunset at 20:28. On the last day of May, sunrise is at 06:14 and sunset at 20:54 WEST.

Sunshine

The average sunshine in May is 10.5h.

UV index

May through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, a daily UV index of 6 turns into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

What is the usual temperature for Sesimbra in May?

The high-temperature, in May, in Sesimbra, records 22.8°C (73°F), while the low-temperature is 14.3°C (57.7°F).

What is the average humidity in May in Sesimbra?

In May, the average relative humidity in Sesimbra is 68%.

How much does it rain in Sesimbra in May?

In Sesimbra, in May, during 7.4 rainfall days, 25mm (0.98") of precipitation is typically accumulated.

What is the sea water temperature in May in Sesimbra?

In Sesimbra, Portugal, in May, the average water temperature is 17.6°C (63.7°F). For most, swimming in 17.6°C (63.7°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the average length of the day in May in Sesimbra?

The average day length in May in Sesimbra is 14h and 16min.

When is the sunrise / sunset in May in Sesimbra?

In May, on the first day of the month, sunrise is at 06:38 and sunset at 20:28. On the last day of the month, sunrise is at 06:14 and sunset at 20:54 WEST.

How many hours of sunshine does Sesimbra have in May?

The average sunshine duration in May is 10.5h.

What is the month with the highest UV index in Sesimbra?

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

What is the UV index reading in May in Sesimbra?

The average daily maximum UV index in May in Sesimbra is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.

Average temperature in May
Sesimbra, Portugal

Average temperature in May - Sesimbra, Portugal
  • Average high temperature in May: 22.8°C

The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in May: 14.3°C

The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is February (9.1°C).

Average pressure in May
Sesimbra, Portugal

Average pressure in May - Sesimbra, 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 (1015.6mbar).

Average wind speed in May
Sesimbra, Portugal

Average wind speed in May - Sesimbra, Portugal
  • Average wind speed in May: 13.9km/h

The windiest month (with the highest average wind speed) is February (14.8km/h).
The calmest month (with the lowest average wind speed) is September (11.6km/h).

Average humidity in May
Sesimbra, Portugal

Average humidity in May - Sesimbra, Portugal
  • Average humidity in May: 68%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (64%).

Average rainfall in May
Sesimbra, Portugal

Average rainfall in May - Sesimbra, Portugal
  • Average rainfall in May: 25mm

The wettest month (with the highest rainfall) is November (55mm).
The driest months (with the least rainfall) are July and August (2mm).

Average rainfall days in May
Sesimbra, Portugal

Average rainfall days in May - Sesimbra, Portugal
  • Average rainfall days in May: 7.4 days

The month with the highest number of rainy days is November (13.3 days).
The month with the least rainy days is August (1.7 days).

Average sea temperature in May
Sesimbra, Portugal

Average sea temperature in May - Sesimbra, Portugal
  • Average sea temperature in May: 17.6°C

The best month for swimming (with the highest average sea temperature) is October (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.3°C).

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

Average daylight in May / Average sunshine in May - Sesimbra, 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 3min

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
Sesimbra, Portugal

Average sunshine days in May - Sesimbra, Portugal
  • Average sunshine days in May: 21.4 days

The month with the most sunshine days is August (28 days).
The month with the least sunshine days is November (14.9 days).

Average UV index in May
Sesimbra, Portugal

Average UV index in May - Sesimbra, 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, April, November and December (UV index 4).

Average cloud cover in May
Sesimbra, Portugal

Average cloud cover in May - Sesimbra, 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 12).

Average visibility in May
Sesimbra, Portugal

Average visibility in May - Sesimbra, 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).

Sesimbra, Portugal

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