Best Time to Visit Portland
✨ Best Months to Visit
Experience Portland's vibrant energy and lush landscapes during the warm, dry summer months.
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June
23.2°C · 87mm rain
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August
25.5°C · 91mm rain
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September
22°C · 101mm rain
Average Monthly Temperature
Click a month below to see its details.
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June
RecommendedHigh 23.2°C · Low 14.2°C · 87mm rain · 10.8h sun/day
0.8°C
Jan
1.9°C
Feb
6.8°C
Mar
12°C
Apr
17.9°C
May
23.2°C
Jun
26.7°C
Jul
25.5°C
Aug
22°C
Sep
16.3°C
Oct
9.1°C
Nov
3.4°C
Dec
Month-by-Month Climate
Full breakdown for every month.
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Cold
January
High 0.8°C / Low -7.1°C
98mm rain
5.8h sun/day
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Cold
February
High 1.9°C / Low -8.3°C
65mm rain
6.9h sun/day
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Cold
March
High 6.8°C / Low -2.6°C
120mm rain
7.8h sun/day
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Rainy
April
High 12°C / Low 2.9°C
124mm rain
8.2h sun/day
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Mild & Sunny
May
High 17.9°C / Low 8.6°C
94mm rain
9.8h sun/day
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Mild & Sunny
June ★
High 23.2°C / Low 14.2°C
87mm rain
10.8h sun/day
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Rainy
July
High 26.7°C / Low 17.9°C
136mm rain
10.7h sun/day
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Mild & Sunny
August ★
High 25.5°C / Low 16.8°C
91mm rain
10.6h sun/day
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Mild & Sunny
September ★
High 22°C / Low 13.4°C
101mm rain
9.4h sun/day
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Mild & Sunny
October
High 16.3°C / Low 8.1°C
98mm rain
7.7h sun/day
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Cold
November
High 9.1°C / Low 1.4°C
78mm rain
6.9h sun/day
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Rainy
December
High 3.4°C / Low -4.4°C
127mm rain
5.7h sun/day
Climate data: 5-year average (2021-2025), via Open-Meteo.