United StatesThe weather in June in Portland
It's warm in June in Portland with an average temperature of 23°C. Temperatures this month range from a low of 17°C to a high of 26°C. At night, you can expect temperatures between 10°C and 17°C.
Looking for great weather? June is a good time to be in Portland. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in June for Portland, Maine. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 37°C in 2021, Portland reached the highest temperature in June over the past 10 years. The lowest daytime temperature in this month was 10°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 25°C.
Water temperature
The water temperature at Portland is 16°C this month. This is probably too cold to swim without protective gear.
Rainfall amount
In June, there is an average of 98 mm of precipitation, spread over 12 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in June for Portland
Click on any day in June to get detailed info about the usual weather on that day in Portland. Check out the historical temperatures and precipitation over the past 10 years on this day.
June weather comparison
| Portland | New York | |
|---|---|---|
| Average temperature | 23°C | 27°C |
| Max. temperature | 26°C | 31°C |
| Min. temperature | 10°C | -5°C |
| Total precipitation | 98 mm | 78 mm |
| Rainy days | 12 days | 11 days |
Start of June
The month of June starts in Portland with warm temps, averaging around 22°C during the day and nights around 12°C.
Mid June
By mid-June, daytime temps rise to around 24°C, with nights around 14°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of June
By the end of June, the average daytime temperature in Portland is around 25°C, while nighttime temps are about 15°C. A shower might pop up, but overall, the weather will be dry and sunny.
Find affordable trips to Portland
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Portland for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in June in Portland, Maine. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in June in Portland
Temperature in June in Portland over the years
Precipitation charts
These charts show the average amount of precipitation in June in Portland, Maine. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in June in Portland
Total precipitation in June in Portland over the years
Daily UV index in June in Portland
This chart shows the average daily UV index in June in Portland, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in June in Portland
Have you been to Portland in June?
Share your weather experience in June in Portland.
Average weather in Portland by month
Click on a month below to see detailed weather info for Portland. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.