The bar chart below shows the average monthly peak daytime temperatures at San Mateo
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 28.6 | 30.1 | 32.2 | 34.2 | 35.1 | 34.3 | 33.5 | 33 | 32.8 | 31.6 | 30 | 28.5 |
°F | 83.4 | 86.2 | 89.9 | 93.6 | 95.2 | 93.7 | 92.3 | 91.4 | 91 | 88.8 | 86 | 83.4 |
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 | 62 | 45 | 60 | 72 | 145 | 198 | 199 | 253 | 209 | 339 | 354 | 178 |
inches | 2.4 | 1.8 | 2.4 | 2.8 | 5.7 | 7.8 | 7.8 | 9.9 | 8.2 | 13.3 | 13.9 | 7 |
Rainy days | 10 | 7 | 8 | 8 | 13 | 15 | 16 | 17 | 16 | 16 | 16 | 12 |
Average annual rainfall in San Mateo: 2251.233mm (886.3 inches)
The bar chart below shows the average daily sunshine hours in San Mateo
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 6.7 | 7.7 | 8.5 | 9.3 | 8.8 | 7.5 | 7.5 | 6.4 | 6.9 | 7.2 | 6.4 | 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 | 19.4 | 19.4 | 20.8 | 22.3 | 23.4 | 23.5 | 23.5 | 23.4 | 23 | 22.4 | 21.6 | 20.3 |
Max °C | 28.8 | 30.4 | 32.5 | 34.5 | 35.4 | 34.6 | 33.8 | 33.3 | 33 | 31.8 | 30.2 | 28.8 |
Min °F | 66.9 | 66.9 | 69.4 | 72.1 | 74.1 | 74.2 | 74.2 | 74 | 73.4 | 72.3 | 70.9 | 68.5 |
Max °F | 75.4 | 76.8 | 79.9 | 83.1 | 84.9 | 84.2 | 83.5 | 82.9 | 82.4 | 80.8 | 78.6 | 76.1 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 26.3 | 26.1 | 26.8 | 28 | 29.3 | 29.8 | 29.7 | 29.4 | 29.3 | 28.8 | 27.9 | 26.9 |
°F | 79.3 | 79 | 80.3 | 82.4 | 84.8 | 85.6 | 85.4 | 84.9 | 84.7 | 83.8 | 82.2 | 80.4 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 8 | 8 | 8 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
mph | 5 | 5 | 5 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
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 |
---|---|---|---|---|---|---|---|---|---|---|---|
83% | 80% | 78% | 75% | 77% | 79% | 80% | 81% | 82% | 82% | 84% | 84% |
Hottest month: | May | 35.1°C 95.2°F |
---|---|---|
Driest month: | February | 45mm 1.8ins |
Sunniest month: | April | 9.3hrs |
Coldest month: | January | 28.6°C 83.5°F |
Wettest month: | November | 354mm 13.9ins |
Warmest sea: | June | 29.8°C 85.6°F |