The bar chart below shows the average monthly peak daytime temperatures at Hyannis
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 1.6 | 4.8 | 9 | 15.6 | 21.3 | 27.1 | 30.9 | 29.7 | 24.4 | 18.2 | 8.7 | 2.9 |
°F | 34.9 | 40.7 | 48.2 | 60 | 70.4 | 80.7 | 87.7 | 85.5 | 75.9 | 64.8 | 47.7 | 37.2 |
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 | 9 | 12 | 26 | 48 | 82 | 82 | 72 | 49 | 37 | 23 | 15 | 11 |
inches | 0.4 | 0.5 | 1 | 1.9 | 3.2 | 3.2 | 2.8 | 1.9 | 1.5 | 0.9 | 0.6 | 0.4 |
Rainy days | 6 | 5 | 8 | 9 | 11 | 10 | 10 | 8 | 7 | 5 | 5 | 6 |
Average annual rainfall in Hyannis: 404.833mm (159.4 inches)
The bar chart below shows the average daily sunshine hours in Hyannis
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 6.4 | 7.1 | 7.7 | 8.8 | 9.6 | 11.3 | 11.8 | 11 | 9.4 | 8.2 | 6.3 | 6 |
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 | -12.4 | -9.6 | -5.8 | -0.2 | 5.7 | 10.8 | 14.3 | 12.9 | 7 | 0.5 | -6.1 | -11 |
Max °C | 2 | 5.2 | 9.4 | 16 | 21.7 | 27.5 | 31.4 | 30.2 | 24.8 | 18.7 | 9.1 | 3.2 |
Min °F | 9.8 | 14.7 | 21.7 | 31.7 | 42.3 | 51.4 | 57.7 | 55.1 | 44.6 | 33 | 21 | 12.2 |
Max °F | 22.6 | 28 | 35.2 | 46.2 | 56.7 | 66.4 | 73 | 70.7 | 60.6 | 49.3 | 34.7 | 25 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 9 | 8.8 | 9.2 | 10 | 11.5 | 13.5 | 15.8 | 18 | 17.1 | 14.3 | 11.7 | 9.9 |
°F | 48.3 | 47.9 | 48.5 | 50.1 | 52.6 | 56.2 | 60.5 | 64.5 | 62.8 | 57.8 | 53.1 | 49.9 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 17 | 17 | 20 | 21 | 20 | 18 | 17 | 16 | 17 | 17 | 17 | 17 |
mph | 11 | 11 | 12 | 13 | 12 | 11 | 10 | 10 | 11 | 11 | 10 | 11 |
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 |
---|---|---|---|---|---|---|---|---|---|---|---|
65% | 65% | 62% | 57% | 60% | 60% | 59% | 60% | 59% | 58% | 63% | 66% |
Hottest month: | July | 30.9°C 87.6°F |
---|---|---|
Driest month: | January | 9mm 0.4ins |
Sunniest month: | July | 11.8hrs |
Coldest month: | January | 1.6°C 34.9°F |
Wettest month: | May | 82mm 3.2ins |
Warmest sea: | August | 18°C 64.4°F |