+45.5234° · -122.6762° · ELEV 0m
Portland
United States · Oregon
Monthly weather averages for Portland, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
August → FebruaryClimate Overview
Portland has a temperate climate. The warmest month is August (29°C average high) and the coolest is December (8°C).
№ 02
1326 mm / yearRainfall by Month
Portland sees 1326 mm of rain a year. The wettest month is December (218 mm); the driest is July (10 mm).
№ 03
May–SeptemberBest Time to Visit
May–September
9°C – 29°C · 11.5h sun
The best time to visit Portland is May–September, when temperatures average 9°C–29°C with 11.5 sunshine hours per day.
Some visitors prefer March–April for cooler, drier conditions.
№ 04
12 months · °C · mm · hoursMonthly Breakdown
| January | 8.4°C | 2.2°C | 166 mm | 4.4 h | 07:46 | 16:52 |
|---|---|---|---|---|---|---|
| February | 8.8°C | 1.7°C | 150 mm | 5.1 h | 07:12 | 17:37 |
| March | 12.1°C | 3.4°C | 147 mm | 7.3 h | 07:23 | 19:16 |
| April | 15.2°C | 5.4°C | 120 mm | 9.0 h | 06:24 | 19:56 |
| May | 19.8°C | 9.3°C | 71 mm | 10.2 h | 05:40 | 20:34 |
| June | 23.7°C | 11.9°C | 56 mm | 12.1 h | 05:21 | 21:01 |
| July | 28.4°C | 14.7°C | 10 mm | 13.3 h | 05:36 | 20:56 |
| August | 29.2°C | 15.4°C | 12 mm | 12.2 h | 06:11 | 20:19 |
| September | 24.0°C | 12.5°C | 62 mm | 9.9 h | 06:49 | 19:22 |
| October | 17.5°C | 8.7°C | 138 mm | 7.1 h | 07:26 | 18:25 |
| November | 10.9°C | 4.4°C | 176 mm | 5.2 h | 07:09 | 16:40 |
| December | 7.5°C | 2.2°C | 218 mm | 3.8 h | 07:44 | 16:27 |