June Weather in Islesboro, United States

Last updated: June 24, 2025

The average temperature in Islesboro, United States during June is a comfortable 14°C (58°F). Expect a minimum of 8°C (46°F) and a pleasant maximum of 25°C (77°F). Throughout the month, 87 mm (3.4 in) of precipitation typically falls over 9 days, with an average humidity of 74%.

June Temperature in Islesboro

In June in Islesboro, the average temperature is 14°C (58°F). The maximum can reach 25°C (77°F) and the minimum can be as low as 8°C (46°F). This mild climate makes Islesboro an ideal destination for travelers looking to enjoy outdoor activities and pleasant weather.

June Weather in Islesboro: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Islesboro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Islesboro, June typically has an average temperature of 14°C (58°F), with highs reaching up to 25°C (77°F) and lows dropping to around 8°C (46°F).

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

June Precipitation in Islesboro

In Islesboro in June, the precipitation amount is 87 mm (3.4 in), occurring over a span of 9 days.

June Precipitation Trends in Islesboro

The chart displays monthly precipitation patterns in Islesboro, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Islesboro, June typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

June Humidity in Islesboro

In Islesboro in June humidity is 74%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities slightly uncomfortable and prompting travelers to seek shade or indoor venues more often.

June Average Humidity in Islesboro

This chart illustrates the average monthly humidity levels in Islesboro, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Islesboro is approximately 74%, offering insight into how humid the weather typically is during this month.

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

June UV Index in Islesboro

In Islesboro in June, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Islesboro.

Maximum UV Index Levels in Islesboro for June

The chart shows the monthly maximum UV Index (UVI) for Islesboro in June, 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 June, the maximum UV index in Islesboro typically reaches 10, which falls under the very high exposure category.

Data source: Islesboro June 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 June Weather in Islesboro Compares to Other Months

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

This table compares monthly weather conditions in Islesboro, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	112 mm (4.4 inches)	88%	low
February Weather	-2°C (29°F)	108 mm (4.2 inches)	88%	moderate
March Weather	0°C (33°F)	89 mm (3.5 inches)	85%	moderate
April Weather	5°C (41°F)	169 mm (6.7 inches)	81%	high
May Weather	9°C (49°F)	114 mm (4.5 inches)	76%	very high
June Weather	14°C (58°F)	87 mm (3.4 inches)	74%	very high
July Weather	17°C (63°F)	100 mm (3.9 inches)	74%	very high
August Weather	18°C (65°F)	90 mm (3.5 inches)	74%	very high
September Weather	16°C (61°F)	99 mm (3.9 inches)	77%	high
October Weather	12°C (54°F)	169 mm (6.6 inches)	82%	moderate
November Weather	6°C (42°F)	145 mm (5.7 inches)	85%	moderate
December Weather	0°C (33°F)	160 mm (6.3 inches)	84%	low