May weather forecastRelva, Portugal

May

Weather in May

May, the last month of the spring in Relva, is another comfortable month, with an average temperature fluctuating between 17.8°C (64°F) and 16.4°C (61.5°F).

Temperature

May's presence marks an average high-temperature of a still enjoyable 17.8°C (64°F), subtly varied from April's 16.5°C (61.7°F). In Relva, May nights experience a modest descent in temperature from daily peaks, cooling down to an average of 16.4°C (61.5°F).

Humidity

The average relative humidity in May is 80%.

Rainfall

In Relva, during May, the rain falls for 12.5 days and regularly aggregates up to 44mm (1.73") of precipitation. Throughout the year, in Relva, there are 162.8 rainfall days, and 525mm (20.67") of precipitation is accumulated.

Daylight

In Relva, the average length of the day in May is 14h and 13min.
On the first day of May in Relva, Portugal, sunrise is at 06:46 and sunset at 20:33. On the last day of the month, sunrise is at 06:22 and sunset at 20:58 +00.

Sunshine

In May, the average sunshine in Relva, Portugal, is 8.5h.

UV index

In Relva, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

May temperatures in Relva vary between a high-temperature of 17.8°C (64°F) and a low-temperature of 16.4°C (61.5°F).

In Relva, Portugal, the average relative humidity in May is 80%.

In May, the rain falls for 12.5 days. Throughout May, 44mm (1.73") of precipitation is accumulated.

In Relva, Portugal, the average day length in May is 14h and 13min.

In May, on the first day of the month, sunrise is at 06:46 and sunset at 20:33. On the last day of the month, in Relva, Portugal, sunrise is at 06:22 and sunset at 20:58 +00.

The average sunshine duration in May in Relva, Portugal, is 8.5h.

In May, the average daily maximum UV index in Relva is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

16.5°C

17.8°C

19.7°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

26.3km/h

23.5km/h

19.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

12.2

14.4

15.6

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Relva, Portugal

Average high temperature in May: 17.8°C

The warmest month (with the highest average high temperature) is August (23.2°C).
The month with the lowest average high temperature is March (16°C).

Average low temperature in May: 16.4°C

The month with the highest average low temperature is August (22.1°C).
The coldest months (with the lowest average low temperature) are February and March (14.7°C).

Average pressure in May
Relva, Portugal

Average pressure in May: 1021.4mbar

The month with the highest atmospheric pressure is July (1024.4mbar).
The month with the lowest atmospheric pressure is October (1016.9mbar).

Average wind speed in May
Relva, Portugal

Average wind speed in May: 22.5km/h

The windiest month (with the highest average wind speed) is December (28.9km/h).
The calmest month (with the lowest average wind speed) is July (16.3km/h).

Average humidity in May
Relva, Portugal

Average humidity in May: 80%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is November (76%).

Average rainfall in May
Relva, Portugal

Average rainfall in May: 44mm

The wettest month (with the highest rainfall) is December (89mm).
The driest month (with the least rainfall) is July (15mm).

Average rainfall days in May
Relva, Portugal

Average rainfall days in May: 12.5 days

The month with the highest number of rainy days is October (19.1 days).
The month with the least rainy days is July (9.1 days).

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

Average daylight in May: 14h and 12min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

Average sunshine in May: 8h and 30min

The month with the most sunshine is July (Average sunshine: 9h and 30min).
The months with the least sunshine are November and December (Average sunshine: 5h and 0min).

Average sunshine days in May
Relva, Portugal

Average sunshine days in May: 14.4 days

The month with the most sunshine days is July (16.3 days).
The month with the least sunshine days is October (7.6 days).

Average UV index in May
Relva, Portugal

Average UV index in May: 5

The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February and March (UV index 4).

Average cloud cover in May
Relva, Portugal

Average cloud cover in May: 49

The month with the most cloud cover is November (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 38).

Average visibility in May
Relva, 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).