April Weather in Mystic Island, United States

Last updated: June 24, 2025

In April, the average temperature in Mystic Island, United States hovers around 12°C (54°F). Be prepared for a temperature range that can dip to a brisk -1°C (31°F) and soar to a warm 31°C (88°F). With an average humidity of 79%, you're likely to feel the moisture in the air. Don't forget your umbrella, as 98 mm (3.9 in) of precipitation can be expected over 10 days.

April Temperature in Mystic Island

In April in Mystic Island, the average temperature is 12°C (54°F), with maximums reaching 31°C (88°F) and minimums dropping as low as -1°C (31°F). This diverse range of temperatures makes it essential for travelers to pack for both warm days and chilly nights.

April Weather in Mystic Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Mystic Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mystic Island, April typically has an average temperature of 12°C (54°F), with highs reaching up to 31°C (88°F) and lows dropping to around -1°C (31°F).

Data source: Temperature data for Mystic Island generated using information from the Copernicus Climate Change Service.

April Precipitation in Mystic Island

In Mystic Island in April, the total precipitation amount is 98 mm (3.9 in) recorded over a span of 10 days.

April Precipitation Trends in Mystic Island

The chart displays monthly precipitation patterns in Mystic Island, 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 Mystic Island, April typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Mystic Island

In Mystic Island in April, humidity is 79%. With an average temperature of 12°C (54°F), this humidity makes traveling feel quite muggy, leading to a sticky discomfort that can sap your energy and make outdoor activities less enjoyable.

April Average Humidity in Mystic Island

This chart illustrates the average monthly humidity levels in Mystic Island, 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 Mystic Island is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Mystic Island

In Mystic Island 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 Mystic Island.

Maximum UV Index Levels in Mystic Island for April

The chart shows the monthly maximum UV Index (UVI) for Mystic Island 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 Mystic Island typically reaches 8, which falls under the very high exposure category.

Data source: Mystic Island 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 Mystic Island Compares to Other Months

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

This table compares monthly weather conditions in Mystic Island, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	65 mm (2.5 inches)	83%	moderate
February Weather	5°C (41°F)	102 mm (4.0 inches)	82%	moderate
March Weather	7°C (45°F)	109 mm (4.3 inches)	81%	high
April Weather	12°C (54°F)	98 mm (3.9 inches)	79%	very high
May Weather	17°C (63°F)	109 mm (4.3 inches)	74%	very high
June Weather	23°C (73°F)	90 mm (3.5 inches)	77%	very high
July Weather	26°C (79°F)	125 mm (4.9 inches)	76%	very high
August Weather	25°C (77°F)	132 mm (5.2 inches)	77%	very high
September Weather	22°C (72°F)	112 mm (4.4 inches)	74%	very high
October Weather	17°C (63°F)	136 mm (5.4 inches)	75%	high
November Weather	9°C (49°F)	80 mm (3.1 inches)	80%	moderate
December Weather	5°C (42°F)	106 mm (4.2 inches)	81%	moderate