Get Exclusive App Deals

Portland

Travel Info
More destinations

Portland Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Portland year round climate

  • Spring (March–May): Average 27.5–29°C, warm and comfortable climate, rainfall gradually increases. Common activities: Outdoor recreation, sightseeing. Recommended clothing: Light long-sleeved clothing, breathable and comfortable pants.
  • Summer (June–August): Average 29.6–30.2°C, hot and humid, relatively high rainfall, especially in June and September. Common activities: Swimming, beach activities (if near a beach). Recommended clothing: Light and breathable clothing, loose and comfortable clothing.
  • Autumn (September–November): Average 29.8–28.1°C, temperature gradually decreases, higher rainfall, especially in November. Common activities: Outdoor activities, need to consider rainy day arrangements. Recommended clothing: Light jacket, rain gear.
  • Winter (December–February): Average 27.7–26.8°C, relatively low temperature, less rainfall. Common activities: Indoor activities, visiting indoor attractions. Recommended clothing: Light warm clothing.

Portland climatological average

Annual average temperature: approx. 28.6°C / Annual rainfall: approx. 744 mm / Summer humidity: 70%–80% / Rainiest month: November

Portland monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
26.9°C
6.8
February
26.8°C
17.7
March
27.5°C
19.7
April
28°C
24.3
May
29°C
39
June
29.6°C
99
July
30.1°C
65.2
August
30.2°C
51.3
September
29.8°C
149
October
29.6°C
62.7
November
28.1°C
203.3
December
27.7°C
6

Portland weather for the next seven days

10/3
Saturday
Overcast
30.5°C/27.3°C
10/4
Sunday
Overcast
30.6°C/27.2°C
10/5
Monday
Sunny
30.5°C/26.6°C
10/6
Tuesday
Overcast
30.4°C/26.1°C
10/7
Wednesday
Overcast
29.6°C/26.1°C
10/8
Thursday
Overcast
29.7°C/25.9°C
10/9
Friday
Overcast
29.5°C/26.4°C