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April Weather in Dumbarton, United Kingdom

Last updated: August 27, 2025

In April, the average temperature in Dumbarton, United Kingdom hovers around 7°C (46°F). While it can dip to a chilly -4°C (24°F), the mercury can also rise to a pleasant 22°C (72°F). Expect about 50 mm (2.0 in) of precipitation over 12 days, contributing to an average humidity of 85%, which adds a bit of dampness to the air.

April Temperature in Dumbarton

In April in Dumbarton, the average temperature is 7°C (46°F). The maximum can reach 22°C (72°F), and the minimum can be as low as -4°C (24°F). This range offers a unique climate that requires visitors to pack accordingly for both warm and cool conditions while exploring the area.

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

The chart illustrates April temperature patterns in Dumbarton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dumbarton, April typically has an average temperature of 7°C (46°F), with highs reaching up to 22°C (72°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec404042455156595854494441
Data source: Temperature data for Dumbarton 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 Dumbarton

In Dumbarton in April, the precipitation amount is 50 mm (2.0 in), occurring over the course of 12 days.

April Precipitation Trends in Dumbarton

The chart displays monthly precipitation patterns in Dumbarton, 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 Dumbarton, April typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec991661275075118103145108166134139
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Dumbarton

In Dumbarton in April humidity is 85%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration feel much colder than it actually is.

April Average Humidity in Dumbarton

This chart illustrates the average monthly humidity levels in Dumbarton, 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 Dumbarton is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%85%81%83%82%82%88%90%92%89%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Dumbarton

In Dumbarton in April, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Dumbarton.

Maximum UV Index Levels in Dumbarton for April

The chart shows the monthly maximum UV Index (UVI) for Dumbarton 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 Dumbarton typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568865311
Data source: Dumbarton 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 Dumbarton Compares to Other Months

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

This table compares monthly weather conditions in Dumbarton, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)99 mm (3.9 inches)90%low
February Weather5°C (41°F)166 mm (6.5 inches)88%low
March Weather6°C (42°F)127 mm (5.0 inches)86%moderate
April Weather7°C (46°F)50 mm (2.0 inches)85%moderate
May Weather11°C (51°F)75 mm (3.0 inches)80%high
June Weather14°C (57°F)118 mm (4.6 inches)83%very high
July Weather15°C (59°F)103 mm (4.1 inches)82%very high
August Weather14°C (58°F)145 mm (5.7 inches)82%high
September Weather12°C (55°F)108 mm (4.2 inches)88%moderate
October Weather10°C (50°F)166 mm (6.5 inches)90%moderate
November Weather7°C (44°F)134 mm (5.3 inches)92%low
December Weather5°C (41°F)139 mm (5.5 inches)89%low

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