Portland Weather in July
United States · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
July in Portland sees average temperatures ranging from a low of 14.8°C (58.6°F) to a high of 29.2°C (84.6°F), with a mean of 21.3°C (70.3°F). Compared to the annual average of 11.9°C (53.4°F), this month is 9.4°C warmer than the yearly norm. Precipitation averages 5.1mm, making it approximately 114.0mm drier than the monthly average of 120.0mm. This is the driest month of the year, with just 5.1mm of precipitation. The city receives an average of 13.5 hours of sunshine per day during July, with relative humidity averaging 58.2%. Wind speeds reach an average maximum of 16.4 km/h. For travelers, this month offers a temperature experience in Portland, with drier-than-average conditions compared to the rest of the year.
Portland's climate is similar to Seattle but with slightly warmer summers and cooler winters. I visited during the famous rose festival in June and found the weather ideal. The data shows that the best time to visit is June to September, when the rainfall is minimal and the city's famous outdoor culture thrives. The winter months are grey and wet but the city's coffee shop culture makes it cozy.
July vs Adjacent Months
| Metric | June | July | August |
|---|---|---|---|
| Mean Temp | 17.1°C (62.8°F) | 21.3°C (70.3°F) | 21.5°C (70.7°F) |
| Rainfall | 77.6mm | 5.1mm | 13.2mm |
| Sunshine | 11.7 hrs | 13.5 hrs | 11.9 hrs |
| Humidity | 68.6% | 58.2% | 58.9% |
| Wind | 16.2 km/h | 16.4 km/h | 15.9 km/h |
| Rainy Days | 12.2 | 4.0 | 4.8 |
Seasonal Context
July falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Portland in July, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Portland in July?
The average temperature in Portland during July ranges from 14.8°C (58.6°F) to 29.2°C (84.6°F), with a mean of 21.3°C (70.3°F).
How much does it rain in Portland in July?
Portland receives an average of 5.1mm of precipitation in July, spread across approximately 4.0 rainy days. This is the driest month of the year.
What should I pack for Portland in July?
Based on July weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is July a good time to visit Portland?
July is a good time to visit Portland, with comfortable temperatures and manageable rainfall.
Other Months for Portland
Cities with Similar July Climate (Oceanic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 45.52°, -122.68°. Timezone: America/Los_Angeles. Last updated: 2026-07-30.