Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The start of April sees the average high-temperature at a still refreshing 17.8°C (64°F), showing little difference from March's 16.3°C (61.3°F). Throughout April, Rio Maior anticipates an average low-temperature of 11.3°C (52.3°F).Humidity
In Rio Maior, the average relative humidity in April is 76%.Rainfall
In Rio Maior, in April, it is raining for 11.5 days, with typically 19mm (0.75") of accumulated precipitation. Throughout the year, there are 101.5 rainfall days, and 168mm (6.61") of precipitation is accumulated.Daylight
The average length of the day in April is 13h and 16min.On the first day of the month, sunrise is at 07:19 and sunset at 19:59. On the last day of April, in Rio Maior, sunrise is at 06:37 and sunset at 20:28 WEST.
Sunshine
In April, the average sunshine in Rio Maior is 8.3h.UV index
The average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 4 during April translates into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun's radiation is especially intense around midday; try to stay in shade during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What are the temperatures in Rio Maior in April?
What is the average humidity in April in Rio Maior?
How much does it rain in Rio Maior in April?
What is the average length of the day in April in Rio Maior?
When are sunrise and sunset in April in Rio Maior?
How many hours of sunshine does Rio Maior have in April?
What is the UV index intensity in April in Rio Maior?
Average temperature in April
Rio Maior, Portugal
- Average high temperature in April: 17.8°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (14°C).
- Average low temperature in April: 11.3°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).
Average pressure in April
Rio Maior, Portugal
- Average pressure in April: 1015.5mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in April
Rio Maior, Portugal
- Average wind speed in April: 15.5km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (13.5km/h).
Average humidity in April
Rio Maior, Portugal
- Average humidity in April: 76%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall in April
Rio Maior, Portugal
- Average rainfall in April: 19mm
The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in April
Rio Maior, Portugal
- Average rainfall days in April: 11.5 days
The month with the highest number of rainy days is November (13.7 days).
The month with the least rainy days is August (3 days).
Average daylight in April /
Average sunshine in April
Rio Maior, Portugal
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in April
Rio Maior, Portugal
- Average sunshine days in April: 15.8 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.3 days).
Average UV index in April
Rio Maior, Portugal
- Average UV index in April: 4
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in April
Rio Maior, Portugal
- Average cloud cover in April: 39
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is September (Cloud cover 20).
Average visibility in April
Rio Maior, Portugal
- Average visibility in April: 10km
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).
Rio Maior, Portugal
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