April Weather in Maine, United States

Last updated: June 24, 2025

In Maine, United States, the average temperature in April hovers around 5°C (42°F). The weather can be quite variable, with minimums plummeting to -20°C (-3°F) while maximums can soar up to 26°C (79°F). During this month, expect approximately 98 mm (3.9 in) of precipitation over about 12 days, and a high average humidity of 84% ensures a damp atmosphere.

April Temperature in Maine

In April in Maine, the average temperature is 5°C (42°F), with maximums reaching 26°C (79°F) and minimums dropping as low as -20°C (-3°F). This diverse temperature range means that travelers should be prepared for a mix of mild days and potentially cold nights.

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

The chart illustrates April temperature patterns in Maine, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Maine, April typically has an average temperature of 5°C (42°F), with highs reaching up to 26°C (79°F) and lows dropping to around -20°C (-3°F).

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

April Precipitation in Maine

In Maine in April, the precipitation amount is 98 mm (3.9 in) over the course of 12 days.

April Precipitation Trends in Maine

The chart displays monthly precipitation patterns in Maine, 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 Maine, April typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 12 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 Maine

In Maine in April, humidity is 84%. With an average temperature of 5°C (42°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier while traveling.

April Average Humidity in Maine

This chart illustrates the average monthly humidity levels in Maine, 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 Maine is approximately 84%, 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 Maine

In Maine in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Maine.

Maximum UV Index Levels in Maine for April

The chart shows the monthly maximum UV Index (UVI) for Maine 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 Maine typically reaches 7, which falls under the high exposure category.

Data source: Maine 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 Maine Compares to Other Months

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

This table compares monthly weather conditions in Maine, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (17°F)	34 mm (1.3 inches)	89%	low
February Weather	-8°C (17°F)	50 mm (2.0 inches)	90%	moderate
March Weather	-1°C (31°F)	53 mm (2.1 inches)	87%	moderate
April Weather	5°C (42°F)	98 mm (3.9 inches)	84%	high
May Weather	13°C (56°F)	103 mm (4.1 inches)	77%	very high
June Weather	19°C (67°F)	102 mm (4.0 inches)	75%	very high
July Weather	22°C (71°F)	117 mm (4.6 inches)	74%	very high
August Weather	19°C (67°F)	121 mm (4.8 inches)	73%	very high
September Weather	16°C (61°F)	83 mm (3.3 inches)	78%	high
October Weather	8°C (47°F)	109 mm (4.3 inches)	84%	moderate
November Weather	0°C (32°F)	50 mm (2.0 inches)	89%	moderate
December Weather	-5°C (23°F)	52 mm (2.1 inches)	87%	low