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April Weather in Onis, Spain

Last updated: August 27, 2025

In Onis, Spain, the average temperature in April hovers around 9°C (48°F). Expect a range from a chilly -3°C (28°F) to a pleasant 22°C (72°F). With 128 mm (5.0 in) of precipitation over about 17 days, be prepared for some rainy spells. The average humidity is a notable 83%, adding a touch of dampness to the air.

April Temperature in Onis

In April in Onis, the average temperature is 9°C (48°F). The maximum can reach 22°C (72°F), while the minimum can dip as low as -3°C (28°F). This temperature range makes Onis an ideal destination for travelers seeking a mix of mild weather and the possibility of experiencing cooler conditions.

April Weather in Onis: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Onis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onis, April typically has an average temperature of 9°C (48°F), with highs reaching up to 22°C (72°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec394344475358626259534542
Data source: Temperature data for Onis 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 Onis

In Onis in April, the total precipitation amount is 128 mm (5.0 in) spread over the course of 17 days.

April Precipitation Trends in Onis

The chart displays monthly precipitation patterns in Onis, 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 Onis, April typically receives around 128 mm (5.0 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec115114126128133160117105109119179175
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Onis

In Onis in April humidity is 83%. With an average temperature of 9°C (48°F), this humidity feels like an enveloping blanket, making outdoor activities quite uncomfortable and encouraging travelers to seek shelter or shade frequently.

April Average Humidity in Onis

This chart illustrates the average monthly humidity levels in Onis, 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 Onis is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%83%83%84%84%86%78%77%82%86%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Onis

In Onis in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Onis.

Maximum UV Index Levels in Onis for April

The chart shows the monthly maximum UV Index (UVI) for Onis 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 Onis typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689111098532
Data source: Onis 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 Onis Compares to Other Months

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

This table compares monthly weather conditions in Onis, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)114 mm (4.5 inches)87%low
February Weather6°C (43°F)114 mm (4.5 inches)85%moderate
March Weather7°C (44°F)126 mm (5.0 inches)83%high
April Weather9°C (48°F)128 mm (5.0 inches)83%very high
May Weather12°C (53°F)133 mm (5.2 inches)84%very high
June Weather14°C (58°F)160 mm (6.3 inches)84%extreme
July Weather17°C (62°F)117 mm (4.6 inches)86%very high
August Weather17°C (62°F)105 mm (4.1 inches)78%very high
September Weather15°C (59°F)109 mm (4.3 inches)77%very high
October Weather12°C (53°F)119 mm (4.7 inches)82%moderate
November Weather7°C (45°F)179 mm (7.0 inches)86%moderate
December Weather6°C (43°F)175 mm (6.9 inches)87%low

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