Temperatures in April
It's pleasantly warm in April in Cascais with an average temperature of 20°C. Temperatures this month range from a low of 18°C to a high of 22°C. At night, you can expect temperatures between 11°C and 14°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Cascais in April. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of April
The month of April starts in Cascais with mild temperatures, averaging around 20°C during the day and nights close to 12°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-April
By mid-April, the average daytime temperature rises to around 21°C, with nights close to 13°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of April
By the end of April, the average daytime temperature in Cascais will be around 21°C, with nights close to 13°C. A shower might show up, but overall the weather will be dry and sunny.
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Water temperature
The water temperature at Cascais is 18°C this month. You can swim, but it's a bit on the chilly side.
Precipitation in April
In April, there is an average of 74 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the West.
The average precipitation chance is 32% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in April for Cascais. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Cascais in April |
London | ||
|---|---|---|---|
 Average Temperature |
20°C | 15°C | |
 High Temp |
22°C | 18°C | |
| Low Temp |
18°C | 12°C | |
 Total Precipitation |
74 mm | 29 mm | |
| Rainy Days |
9 days | 7 days | |
March
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is April a good time to visit Cascais?
Want nice weather? Then April is a great time to be in Cascais. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Cascais in April
With 31°C, Cascais hit the highest temperature in the last 10 years in April 2023. The lowest daytime temperature in this month was 12°C in 2018. The extreme night temperatures ranged from a low of 6°C to a high of 17°C.
Check out the climate of Cascais for all months and discover the best travel time
Curious about the climate in other parts of Portugal? Check out the weather and climate in places like Algarve, Lisbon, Albufeira, or have a look at other destinations in Portugal.
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Daily Temperature in April in Cascais
This chart shows the average daily temperatures, both day and night, for each day in April in Cascais, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in April in Cascais
The chart below shows the average daily precipitation in April for Cascais, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for April, you can expect around 9 days of rain in Cascais.
Daily UV Index in April in Cascais
This chart shows the average daily UV index in April in Cascais, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in April in Cascais Over the Years
This chart shows the average temperature in April in Cascais, measured in degrees Celsius, over the past years.
Total Precipitation in April in Cascais Over the Years
This chart shows the average precipitation in April in Cascais, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in April for Cascais
Click on a specific day in April for detailed info on the typical weather on that day in Cascais. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in April in Cascais
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Average Weather in Cascais by Month
Click on a month below to see detailed weather info for Cascais. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
