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April Weather in Castelo Branco, Portugal

Last updated: August 27, 2025

In Castelo Branco, Portugal, the average temperature in April hovers around 15°C (60°F), making it a pleasant destination. Expect a minimum of 9°C (49°F) and a maximum of 18°C (65°F) this month. However, be prepared for some rain, as 75 mm (3.0 in) of precipitation is likely over 14 days. With an average humidity of 85%, it’s advisable to enjoy the charm of this locale while staying comfortable and dry!

April Temperature in Castelo Branco

In April, in Castelo Branco, the average temperature is 15°C (60°F). Maximum temperatures can reach 18°C (65°F), while minimum temperatures can drop to as low as 9°C (49°F). This mild climate makes Castelo Branco an ideal destination for travelers looking to enjoy comfortable outdoor activities.

April Weather in Castelo Branco: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Castelo Branco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castelo Branco, April typically has an average temperature of 15°C (60°F), with highs reaching up to 18°C (65°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec615959606266707272696563
Data source: Temperature data for Castelo Branco generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Castelo Branco

In Castelo Branco in April, the precipitation amount is 75 mm (3.0 in) spread over 14 days, indicating a relatively wet period for the region.

April Precipitation Trends in Castelo Branco

The chart displays monthly precipitation patterns in Castelo Branco, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Castelo Branco, April typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec91796375633827585774124108
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Castelo Branco

In Castelo Branco in April, humidity is 85%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat uncomfortable for travelers who may find themselves constantly seeking shade and hydration.

April Average Humidity in Castelo Branco

This chart illustrates the average monthly humidity levels in Castelo Branco, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Castelo Branco is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%85%85%83%85%86%83%83%79%80%85%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Castelo Branco

In Castelo Branco in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Castelo Branco.

Maximum UV Index Levels in Castelo Branco for April

The chart shows the monthly maximum UV Index (UVI) for Castelo Branco in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Castelo Branco typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109743
Data source: Castelo Branco April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in Castelo Branco Compares to Other Months

Weather in Castelo Branco varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Castelo Branco, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Castelo Branco, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)90 mm (3.6 inches)84%moderate
February Weather15°C (59°F)79 mm (3.1 inches)83%moderate
March Weather15°C (60°F)63 mm (2.5 inches)85%high
April Weather15°C (60°F)75 mm (3.0 inches)85%very high
May Weather17°C (62°F)63 mm (2.5 inches)83%very high
June Weather19°C (66°F)38 mm (1.5 inches)85%extreme
July Weather21°C (70°F)27 mm (1.1 inches)86%very high
August Weather22°C (73°F)58 mm (2.3 inches)83%very high
September Weather22°C (72°F)57 mm (2.2 inches)83%very high
October Weather20°C (69°F)74 mm (2.9 inches)79%high
November Weather18°C (65°F)124 mm (4.9 inches)80%moderate
December Weather17°C (63°F)108 mm (4.3 inches)85%moderate

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