Best year time to visit Islesboro

General weather information about Islesboro

Average annual temperature is 8.7 °C

Absolute maximum temperature: 30.1 °C

Absolute minimum temperature: -28.8 °C

Number of sunny days: 153 days

Number of rainy days: 184 days

Number of snow days: 28 days

* Weather data for Islesboro United States is based on climate observations for 2026 year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	9.8	11.3	10.5	20.9	28.8	27.7	28.7	26.3	30.1	26.2	14.0	12.8
Average daytime temperature (°C)	3.1	1.3	4.8	10.9	17.7	18.8	24.7	22.6	21.6	16.2	6.7	4.4
Average temperature (°C)	-0.7	-3.8	1.0	6.6	12.4	15.0	21.0	18.8	17.3	12.3	2.5	0.8
Average night temperature (°C)	-4.1	-8.3	-2.6	3.0	7.8	12.0	17.9	15.6	13.9	9.1	-0.7	-2.2
Absolute minimum temperature (°C)	-10.5	-28.8	-9.5	-4.3	2.1	6.3	13.9	11.5	8.2	0.5	-6.7	-11.1

The best time to visit Islesboro during the most sunny months:

Months with the longest average daylight duration in Islesboro:

The largest precipitation sum in Islesboro is at

January — 187(mm)

June — 191(mm)

July — 178(mm)

October — 206(mm)

December — 171(mm)

When is the best time to visit Islesboro?

The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Islesboro.

What is the weather like in Islesboro?

See average temperature, rainfall and daylight hours for Islesboro by month in the table above.

How many sunny days does Islesboro have?

The monthly weather statistics above show sunshine and rainfall patterns for Islesboro throughout the year.