nomadseason

April Weather in South New Castle, United States

Last updated: June 24, 2025

In April, the average temperature in South New Castle, United States hovers around 10°C (50°F), with extremes reaching a chilly -5°C (23°F) at night and a pleasant 28°C (83°F) during the day. This month sees an average precipitation of 139 mm (5.5 in) spread over 16 days, contributing to a notably high average humidity of 87%. Be prepared for a mix of wet and mild weather!

April Temperature in South New Castle

In April in South New Castle, the average temperature is 10°C (50°F). Maximums can reach 28°C (83°F), while minimums can be as low as -5°C (23°F). This makes it a diverse month for travelers, with the potential for both warm and chilly experiences, so be sure to pack accordingly!

April Weather in South New Castle: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in South New Castle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South New Castle, April typically has an average temperature of 10°C (50°F), with highs reaching up to 28°C (83°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec293339496169737166564135
Data source: Temperature data for South New Castle generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in South New Castle

In South New Castle in April, the total precipitation amount is 139 mm (5.5 in) spread over 16 days.

April Precipitation Trends in South New Castle

The chart displays monthly precipitation patterns in South New Castle, 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 South New Castle, April typically receives around 139 mm (5.5 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec9811110813914113814199115125103103
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in South New Castle

In South New Castle in April humidity is 87%. With an average temperature of 10°C (50°F), this humidity feels like a heavy cloak wrapping around you, making every step feel laborious and the air thick with moisture, challenging your comfort while traveling.

April Average Humidity in South New Castle

This chart illustrates the average monthly humidity levels in South New Castle, 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 South New Castle is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in South New Castle

In South New Castle 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 South New Castle.

Maximum UV Index Levels in South New Castle for April

The chart shows the monthly maximum UV Index (UVI) for South New Castle 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 South New Castle typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: South New Castle 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 South New Castle Compares to Other Months

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

This table compares monthly weather conditions in South New Castle, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)98 mm (3.9 inches)88%moderate
February Weather0°C (33°F)111 mm (4.4 inches)88%moderate
March Weather4°C (40°F)108 mm (4.3 inches)87%high
April Weather10°C (50°F)139 mm (5.5 inches)87%very high
May Weather16°C (61°F)141 mm (5.6 inches)81%very high
June Weather20°C (69°F)138 mm (5.4 inches)83%very high
July Weather23°C (74°F)141 mm (5.5 inches)82%very high
August Weather22°C (72°F)99 mm (3.9 inches)76%very high
September Weather19°C (66°F)115 mm (4.5 inches)77%very high
October Weather13°C (56°F)125 mm (4.9 inches)82%high
November Weather5°C (41°F)103 mm (4.0 inches)89%moderate
December Weather1°C (35°F)103 mm (4.0 inches)86%low

Compare South New Castle's Climate with Cities Worldwide