Weather in Portland in September 2017

Expect 23°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Portland in September. Check more long-term weather averages for Portland in September before you book your next holiday to Oregon in 2017.

Key weather averages for Portland in September

  • 23°C maximum daytime temperature in September in Portland23
    23°C max day temperature
  • 8 hours of sunshine per day (64% of daylight hours) in September in Portland8
    8 hours of sunshine per day
  • 8 days with some rainfall in September in Portland8
    8 days with some rainfall
  • 9°C minimum night-time temperature in September in Portland9
    9°C min night temperature
  • 12 hours of daylight per day in September in Portland12
    12 hours of daylight per day
  • No heat & humidity in September in Portland0
    No heat & humidity
  • 47 mm monthly rainfall in September in Portland47
    47 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Portland5
    5 (Moderate) UV index

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

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

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More about Portland

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

Guide to Portland weather in September

The average maximum daytime temperature in Portland in September is a warm 23°C (73°F). The average night-time temperature is usually a cool 9°C (48°F). There are usually 8 hours of bright sunshine each day, which represents 64% of the 12 hours of daylight.

Expect 47mm (1.9 inches) of rainfall across the whole of September with 8 days with some rain falling. Maximum UV levels will be moderate (5 UV index) at midday when the skies are clear.

The weather in Portland in September is represented by Portland.

Portland sunrise & sunset times for September 2017

Browse the sunrise & sunset times for Portland in September 2017. Select a month to view Portland sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st September 2017 06:33 19:48
Saturday, 2nd September 2017 06:34 19:46
Sunday, 3rd September 2017 06:35 19:44
Monday, 4th September 2017 06:36 19:42
Tuesday, 5th September 2017 06:37 19:40
Wednesday, 6th September 2017 06:39 19:38
Thursday, 7th September 2017 06:40 19:36
Friday, 8th September 2017 06:41 19:35
Saturday, 9th September 2017 06:42 19:33
Sunday, 10th September 2017 06:43 19:31
Monday, 11th September 2017 06:45 19:29
Tuesday, 12th September 2017 06:46 19:27
Wednesday, 13th September 2017 06:47 19:25
Thursday, 14th September 2017 06:48 19:23
Friday, 15th September 2017 06:50 19:21
Saturday, 16th September 2017 06:51 19:19
Sunday, 17th September 2017 06:52 19:17
Monday, 18th September 2017 06:53 19:15
Tuesday, 19th September 2017 06:54 19:13
Wednesday, 20th September 2017 06:56 19:11
Thursday, 21st September 2017 06:57 19:09
Friday, 22nd September 2017 06:58 19:07
Saturday, 23rd September 2017 06:59 19:06
Sunday, 24th September 2017 07:01 19:04
Monday, 25th September 2017 07:02 19:02
Tuesday, 26th September 2017 07:03 19:00
Wednesday, 27th September 2017 07:04 18:58
Thursday, 28th September 2017 07:06 18:56
Friday, 29th September 2017 07:07 18:54
Saturday, 30th September 2017 07:08 18:52
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  • Flights depart from London Heathrow Airport
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Portland weather by month

Check Portland weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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