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Climate & Temperature > Usa > Portland, Oregon Climate

Climate of Portland, Oregon, Usa Average Weather

Portland, Oregon Climate Graph
  • Portland, Oregon, usa, 45°36'N, 122°35'W, 12 m (39 ft)
  • Portland, Oregon has a mediterranean climate that is mild with dry, warm summers and moderate seasonality (Köppen-Geiger classification: Csb)
  • According to the Holdridge life zones system of bioclimatic classification Portland, Oregon is close to the warm temperate moist forest biome.
  • The mean annual temperature is 12 degrees Celsius (53.6 degrees Fahrenheit).
  • Total annual Precipitation averages 921.9 mm (36.3 in).
  • Annual sunshine averages 1953 hours.
  • If Portland, Oregon were situated on the opposite side of the world what would the climate be like? Follow this link to find the nearest location on ClimaTemps.com!

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Average Max Temperature °C ( °F) 7 (45) 11 (51) 13 (56) 16 (61) 20 (67) 23 (74) 27 (80) 27 (80) 24 (75) 18 (64) 11 (53) 8 (46) 17 (63)
Average Temperature °C ( °F) 4 (40) 6 (44) 9 (47) 11 (51) 14 (57) 18 (64) 20 (68) 20 (69) 17 (63) 13 (55) 8 (46) 5 (40) 12 (54)
Average Min Temperature °C ( °F) 1 (34) 2 (36) 4 (39) 5 (41) 8 (47) 12 (53) 14 (56) 14 (57) 11 (52) 7 (45) 4 (40) 2 (35) 7 (45)
Average Precipitation mm (in) 136 (5) 98 (4) 90 (4) 61 (2) 52 (2) 38 (1) 16 (1) 28 (1) 44 (2) 68 (3) 136 (5) 156 (6) 922 (36)
Number of Wet Days (probability of rain on a day) 18 (58%) 15 (53%) 17 (55%) 12 (40%) 10 (32%) 9 (30%) 3 (10%) 4 (13%) 6 (20%) 12 (39%) 15 (50%) 19 (61%)   140 (38%)
Average Sunlight Hours/ Day 01:48 03:15 04:00 06:16 07:05 06:44 10:27 08:21 07:08 04:11 02:56 01:48   05:20
Average Daylight Hours & Minutes/ Day 09:07 10:18 11:50 13:29 14:53 15:37 15:17 14:04 12:29 10:50 09:27 08:45   12:00
Percentage of Sunny (Cloudy) Daylight Hours 20 (80) 32 (68) 34 (66) 47 (53) 48 (52) 44 (56) 69 (31) 60 (40) 58 (42) 39 (61) 32 (68) 21 (79)   45 (55)

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