Climate in Portland

Portland, United States has a oceanic climate. The annual average temperature is about 14.1°C and the city receives roughly 1001 mm of precipitation across 167 rainy days a year, with around 872 hours of sunshine. The warmest month is Jul (highs near 22.6°C) and the coldest is Jan (lows near 5.6°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

Portland is classified as Oceanic. This reflects its annual temperature range and the seasonal pattern of its rainfall.

Portland receives about 1001 mm of precipitation a year over roughly 167 rainy days. The wettest month is Dec and the driest is Jun.

Portland sees an estimated 872 hours of sunshine a year, concentrated in the warmer months around Jul.

By temperature and rainfall, the most comfortable months in Portland are Jul, Jun, May. Conditions vary year to year — verify with a current forecast before booking.

Portland has a climate comfort score of 69/100, a comfortable year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.

• Climate in Seattle — Oceanic, comfort 69/100
• Climate in San Francisco — Mediterranean, comfort 96/100
• Climate in Vancouver — Oceanic, comfort 64/100