The bar chart below shows the average monthly peak daytime temperatures at Portland
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | -0.8 | 0.6 | 5.3 | 11.4 | 17.3 | 22.5 | 25.9 | 25.1 | 20.7 | 14.9 | 8.4 | 1.8 |
°F | 30.6 | 33.1 | 41.6 | 52.4 | 63.1 | 72.6 | 78.6 | 77.2 | 69.3 | 58.9 | 47.1 | 35.3 |
Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.
The graph below shows the average rainfall and number of rainy days per month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
mm | 94 | 88 | 99 | 105 | 92 | 85 | 78 | 75 | 81 | 100 | 131 | 117 |
inches | 3.7 | 3.5 | 3.9 | 4.1 | 3.6 | 3.3 | 3.1 | 3 | 3.2 | 3.9 | 5.1 | 4.6 |
Rainy days | 11 | 10 | 11 | 12 | 12 | 11 | 10 | 10 | 9 | 10 | 12 | 12 |
Average annual rainfall in Portland: 1117.333mm (439.9 inches)
The bar chart below shows the average daily sunshine hours in Portland
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 5.8 | 6.6 | 7 | 7.6 | 8.4 | 9.2 | 9.7 | 9.2 | 8.1 | 6.8 | 5.1 | 5 |
The graph below shows the daily range of temperatures for each month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Min °C | -11.1 | -10.1 | -4 | 1.4 | 6.5 | 11.4 | 14.9 | 14.2 | 9.8 | 4 | -0.6 | -7.7 |
Max °C | -0.5 | 0.9 | 5.6 | 11.6 | 17.6 | 22.8 | 26.2 | 25.4 | 21 | 15.2 | 8.6 | 2.1 |
Min °F | 12 | 13.8 | 24.9 | 34.5 | 43.6 | 52.5 | 58.7 | 57.6 | 49.6 | 39.2 | 30.9 | 18.2 |
Max °F | 21.6 | 23.7 | 33.4 | 43.7 | 53.6 | 62.8 | 68.9 | 67.6 | 59.7 | 49.3 | 39.2 | 27 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 5 | 3.5 | 3.2 | 4.7 | 8.4 | 12.8 | 16.5 | 17.5 | 15.5 | 12.2 | 9.3 | 7 |
°F | 40.9 | 38.3 | 37.7 | 40.5 | 47.1 | 55.1 | 61.8 | 63.4 | 59.8 | 53.9 | 48.7 | 44.5 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 16 | 16 | 17 | 17 | 15 | 14 | 13 | 13 | 13 | 14 | 15 | 15 |
mph | 10 | 10 | 11 | 11 | 9 | 9 | 8 | 8 | 8 | 9 | 9 | 9 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
The graph below shows the average relative humidity.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|
67% | 65% | 66% | 67% | 71% | 75% | 75% | 76% | 77% | 74% | 73% | 70% |
Hottest month: | July | 25.9°C 78.6°F |
---|---|---|
Driest month: | August | 75mm 3ins |
Sunniest month: | August | 9.2hrs |
Coldest month: | January | -0.8°C 30.6°F |
Wettest month: | November | 131mm 5.2ins |
Warmest sea: | August | 17.5°C 63.5°F |