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April Weather in Castlemartin, United Kingdom

Last updated: August 27, 2025

In April, the average temperature in Castlemartin, United Kingdom hovers around 9°C (49°F), with a minimum dipping to 2°C (36°F) and a maximum reaching 18°C (64°F). Expect approximately 50 mm (2.0 in) of precipitation spread over 9 days, accompanied by a notable average humidity of 84%. 🌧️

April Temperature in Castlemartin

In April in Castlemartin, the average temperature is 9°C (49°F). Maximum temperatures can reach 18°C (64°F), while minimums can dip as low as 2°C (36°F). Travelers should be prepared for a mix of cool and mild weather during this time.

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

The chart illustrates April temperature patterns in Castlemartin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castlemartin, April typically has an average temperature of 9°C (49°F), with highs reaching up to 18°C (64°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec454546495358616159555048
Data source: Temperature data for Castlemartin 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 Castlemartin

In Castlemartin in April, the precipitation amount is 50 mm (2.0 in) over the course of 9 days.

April Precipitation Trends in Castlemartin

The chart displays monthly precipitation patterns in Castlemartin, 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 Castlemartin, April typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec80102935061826710197130131150
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Castlemartin

In Castlemartin in April, humidity is 84%. With an average temperature of 9°C (49°F), this humidity feels like a chilly embrace, making travel uncomfortable as the dampness seeps into your clothes and lingers in the air, leaving you feeling cool yet clammy.

April Average Humidity in Castlemartin

This chart illustrates the average monthly humidity levels in Castlemartin, 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 Castlemartin is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%84%83%84%85%86%87%86%85%85%82%80%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Castlemartin

In Castlemartin in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Castlemartin, you can refer to this Hourly UV Index in Castlemartin.

Maximum UV Index Levels in Castlemartin for April

The chart shows the monthly maximum UV Index (UVI) for Castlemartin 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 Castlemartin typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Castlemartin 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 Castlemartin Compares to Other Months

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

This table compares monthly weather conditions in Castlemartin, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (46°F)80 mm (3.2 inches)81%low
February Weather7°C (46°F)102 mm (4.0 inches)84%low
March Weather8°C (46°F)93 mm (3.7 inches)83%moderate
April Weather9°C (49°F)50 mm (2.0 inches)84%high
May Weather12°C (53°F)61 mm (2.4 inches)85%high
June Weather14°C (58°F)82 mm (3.2 inches)86%very high
July Weather16°C (61°F)67 mm (2.6 inches)87%very high
August Weather16°C (61°F)101 mm (4.0 inches)86%high
September Weather15°C (59°F)97 mm (3.8 inches)85%high
October Weather13°C (55°F)130 mm (5.1 inches)85%moderate
November Weather10°C (50°F)131 mm (5.2 inches)82%low
December Weather9°C (48°F)150 mm (5.9 inches)80%low

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