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Best time to visit Portland, Maine, ME, USA

Our verdict

The best time to visit Portland, ME is November

Are you looking to travel to Portland, ME and want to find out when’s the best time to visit? You’re in the right place! The perfect time to visit Portland, ME is November due to the excellent weather conditions, and you might even find that the cost of flights and accommodation are lower than if you travel during the peak holiday seasons.

During the warmer months, temperatures in Portland, ME can rise to a maximum of 24℃ (76℉). In the winter, temperatures can get down to -10℃ (14℉) around January.

The days are longest in Portland, ME in August, so if you want to see the sights during the day when the sun is up for the longest time, it’s best to visit around that time of year. The wet season in Portland, ME falls around October, so if you prefer the dryer weather, you should look to visit in September instead.

Continue reading to find out loads more about when to travel to Portland, ME, then use the handy tools below to search for the best flight and hotel options that are right for you.

Warmest month

July

Least rainfall

September

Most daylight

August

Portland, ME seasons

Before you continue, it’s important to know when the seasons are in Portland, ME as they might be different to yours depending on where in the world you’re travelling from. Portland, ME is in the Northern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Portland, ME

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Portland, ME for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Portland, ME climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Portland, ME for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Portland, ME in January

  • Average temperature: -3℃ (26℉)
  • Average high temperature: -1℃ (31℉)
  • Average low temperature: -6℃ (21℉)
  • Average humidity: 79%
  • Average sunny days: 19 days
  • Average rainfall: 34mm (1") over 6 days
  • Average snow days: 8 days
19 days
of pure sunshine
6 days
of showers or rain

What to pack: If you’re heading to Portland, ME in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Portland, ME in February

  • Average temperature: -2℃ (28℉)
  • Average high temperature: 0℃ (33℉)
  • Average low temperature: -6℃ (22℉)
  • Average humidity: 78%
  • Average sunny days: 17 days
  • Average rainfall: 39mm (2") over 6 days
  • Average snow days: 7 days
17 days
of pure sunshine
6 days
of showers or rain

What to pack: If you’re heading to Portland, ME in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Portland, ME in March

  • Average temperature: 1℃ (34℉)
  • Average high temperature: 4℃ (38℉)
  • Average low temperature: -2℃ (29℉)
  • Average humidity: 78%
  • Average sunny days: 16 days
  • Average rainfall: 44mm (2") over 9 days
  • Average snow days: 6 days
16 days
of pure sunshine
9 days
of showers or rain

What to pack: If you’re heading to Portland, ME in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Portland, ME in April

  • Average temperature: 6℃ (43℉)
  • Average high temperature: 9℃ (48℉)
  • Average low temperature: 3℃ (38℉)
  • Average humidity: 77%
  • Average sunny days: 14 days
  • Average rainfall: 52mm (2") over 13 days
  • Average snow days: 2 days
14 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Portland, ME in April, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Portland, ME in May

  • Average temperature: 11℃ (53℉)
  • Average high temperature: 14℃ (57℉)
  • Average low temperature: 8℃ (47℉)
  • Average humidity: 81%
  • Average sunny days: 16 days
  • Average rainfall: 47mm (2") over 13 days
16 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Portland, ME in May, make sure you pack a warm jacket or coat.


Portland, ME in June

  • Average temperature: 16℃ (60℉)
  • Average high temperature: 18℃ (65℉)
  • Average low temperature: 13℃ (55℉)
  • Average humidity: 83%
  • Average sunny days: 15 days
  • Average rainfall: 53mm (2") over 13 days
15 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Portland, ME in June, make sure you pack a light jumper or hoodie.


Portland, ME in July

  • Average temperature: 20℃ (67℉)
  • Average high temperature: 22℃ (72℉)
  • Average low temperature: 17℃ (62℉)
  • Average humidity: 82%
  • Average sunny days: 14 days
  • Average rainfall: 43mm (2") over 14 days
14 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Portland, ME in July, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.


Portland, ME in August

  • Average temperature: 20℃ (67℉)
  • Average high temperature: 22℃ (72℉)
  • Average low temperature: 17℃ (62℉)
  • Average humidity: 82%
  • Average sunny days: 15 days
  • Average rainfall: 55mm (2") over 13 days
15 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Portland, ME in August, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.


Portland, ME in September

  • Average temperature: 16℃ (61℉)
  • Average high temperature: 19℃ (66℉)
  • Average low temperature: 13℃ (56℉)
  • Average humidity: 79%
  • Average sunny days: 17 days
  • Average rainfall: 30mm (1") over 10 days
17 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Portland, ME in September, make sure you pack a light jumper or hoodie.

Portland, ME in October

  • Average temperature: 11℃ (52℉)
  • Average high temperature: 14℃ (57℉)
  • Average low temperature: 9℃ (47℉)
  • Average humidity: 78%
  • Average sunny days: 17 days
  • Average rainfall: 60mm (2") over 12 days
17 days
of pure sunshine
12 days
of showers or rain

What to pack: If you’re heading to Portland, ME in October, make sure you pack a warm jacket or coat.


Portland, ME in November

  • Average temperature: 5℃ (42℉)
  • Average high temperature: 8℃ (46℉)
  • Average low temperature: 3℃ (37℉)
  • Average humidity: 74%
  • Average sunny days: 19 days
  • Average rainfall: 43mm (2") over 9 days
  • Average snow days: 2 days
19 days
of pure sunshine
9 days
of showers or rain

What to pack: If you’re heading to Portland, ME in November, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Portland, ME in December

  • Average temperature: 0℃ (33℉)
  • Average high temperature: 3℃ (37℉)
  • Average low temperature: -2℃ (28℉)
  • Average humidity: 77%
  • Average sunny days: 18 days
  • Average rainfall: 51mm (2") over 8 days
  • Average snow days: 5 days
18 days
of pure sunshine
8 days
of showers or rain

What to pack: If you’re heading to Portland, ME in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Top FAQs

The hottest month of the year in Portland, ME is usually July, where temperatures tend to rise to around 22℃ (72℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Portland, ME is generally around September. The dry season often coincides with cooler weather, so you should check the temperatures in September first to make sure it’s still a good time to go.
The rainiest time of year in Portland, ME is generally around October, although the wetter season can sometimes extend a few months either side of October too.
If you want to get the most out of your time visiting Portland, ME, or if you're just afraid of the dark, the days in August are usually the longest between sunrise and sunset.

Portland, ME map