Which is the hottest month in Portland?

The hottest time of year in Portland is normally July. Expect maximum daytime temperatures to reach 26°C with low heat and humidity.

Which month has the most rain in Portland?

In terms of rainfall, November is usually the wettest month in Portland with 131mm on average. There are normally 12 days in November with some rain.

When is it sunniest in Portland?

The sunniest time of year in Portland is normally August with bright sunshine on average for 60% of daylight hours; that's 8 hours of sunshine per day.

When is the sea warmest in Portland?

The sea is usually at its warmest in Portland in August when the water temperature reaches 17°C.

Best time to visit Portland

Q: When is the best time to visit Portland?

The best time to visit Portland is July based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

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Portland by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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When is the best time to visit Portland?

The best time to visit Portland is July based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

1
Jan
1.5
Feb
1.5
Mar
1.5
Apr
3
May
4
Jun
4.5
Jul
4
Aug
4
Sep
1.5
Oct
0.5
Nov
0.5
Dec

Change criteria

Max Day Temperature (°C)

0
Jan
1
Feb
6
Mar
12
Apr
18
May
23
Jun
26
Jul
25
Aug
21
Sep
15
Oct
9
Nov
2
Dec

Hours of Sunshine (daily)

5
Jan
6
Feb
6
Mar
7
Apr
8
May
9
Jun
9
Jul
8
Aug
7
Sep
6
Oct
4
Nov
4
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Maine (Portland) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)