Portland, Maine weather in June
Temperature, sea and sunshine in June: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in June
Poor
Best time to visit: July – August
What is the weather like in Portland, Maine in June?
In June, Portland, Maine is mild: daytime highs average 20 °C, and nights cool down to about 14 °C. The sea averages 13.2 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 85 mm in total. All in all, June is not an ideal month for a holiday in Portland, Maine.
June compared
How the weather changes from May to July. Tap a month to open it.
More details for June
- Daylight
- 15 h 25 min04:59 – 20:24
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 3 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 62 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−4America/New_York
How the score comes together
- Temperatureweight 35 %23 %
- Seaweight 25 %0 %
- Sunshineweight 20 %73 %
- Few rainy daysweight 20 %54 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in June
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Portland, Maine in June: quick answers
Is Portland, Maine hot in June?
No. In June, Portland, Maine is mild: daytime highs average 20 °C and nights drop to about 14 °C.
Can you swim in Portland, Maine in June?
Only if you don't mind cold water: in June the sea averages just 13.2 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Portland, Maine in June?
Rain is frequent, with about 11 rainy days and 85 mm in total.
Portland, Maine month by month
The whole year in Portland, MaineAll destinations: USAWhere to go in JuneSea temperature in June
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences