Climate of Portland

Portland has a continental climate. It is warm in the summer and cold in the winter. The average annual temperature for Portland is 11° degrees and there is about 446 mm of rain in a year. It is dry for 197 days a year with an average humidity of 80% and an UV-index of 3.

Climate averages for the whole year

Day: the average daily temperature during the day is between -1°C and 22°C
Night:the average nighttime temperature is between -6°C and 16°C
Sea temperature: the sea temperature is between 5°C and 19°C
Rain: it rains 123 days and there is a total of approximately 444 mm rainfall
Snow: it snows an average of 30 days per year
Sun hours: throughout the year there are 2696 sun hours

Maximum temperature:	between -1°C and 22°C
Warmest month:	22°C in July
Coldest month:	-1°C in January
Night temperature:	between -6°C and 16°C
Sea temperature:	between 5°C and 19°C
Dry days:	212 days
Days with rain:	123 days
Days with snow:	30 days
Total rain sum:	444 mm
Hours of sunshine:	2696 hours

Climate of Portland
Temperature graph
Precipitation graph
Climate chart of Portland
The best travel time for Portland
Climate of Portland by month
Experiences with the weather of Portland

Do you want to go to Portland?

These are the travel companies where you can book a trip to Portland:

Booking.com

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Portland.

Precipitation graph

This graph shows the average amount of rainfall per month for Portland.

Climate table of Portland

In this climate table you can see at a glance what the average weather per month is for Portland. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Portland might be like in a given month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day temp. (°C)	-1	0	3	9	14	18	22	22	19	14	8	3
Night temp. (°C)	-6	-6	-2	3	9	13	16	16	13	9	3	-2
Water temp. (°C)	7	5	5	7	11	15	19	19	18	16	11	9
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Precipitation (mm)	30	35	40	34	33	39	37	38	29	49	41	39
Days with rain	5	6	9	12	13	13	14	13	10	11	9	8
Days with snow	8	7	6	2	-	-	-	-	-	-	2	5
Dry days	18	15	16	16	18	17	17	18	20	20	19	18
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sun hours per day	5	5	6	9	9	9	10	11	9	6	5	5
Wind force (Bft)	4	3	3	3	3	3	3	3	3	3	3	3
UV-index	2	2	2	3	4	5	5	5	4	3	2	2

Best time to visit Portland

The best time to visit Portland in the state of Maine is from June through September. In this period you have a pleasant temperature and almost no precipitation. The highest average temperature in Portland is 22°C in July and the lowest is -1°C in January. The water temperature is 19°C at its highest and in other months it can be 5°C.

Climate of Portland by month

What is the average climate in a given month for Portland? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

January