The bar chart below shows the average monthly peak daytime temperatures at Katwijk aan Zee
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 5.1 | 5.5 | 8.3 | 11.1 | 15.6 | 18.2 | 20.1 | 20.5 | 17.8 | 14 | 9.3 | 6.7 |
°F | 41.2 | 41.9 | 46.9 | 51.9 | 60.2 | 64.7 | 68.1 | 68.8 | 64 | 57.2 | 48.8 | 44.1 |
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 | 69 | 44 | 61 | 46 | 49 | 60 | 70 | 67 | 81 | 85 | 91 | 78 |
inches | 2.7 | 1.7 | 2.4 | 1.8 | 1.9 | 2.4 | 2.8 | 2.6 | 3.2 | 3.3 | 3.6 | 3.1 |
Rainy days | 20 | 12 | 18 | 13 | 14 | 13 | 14 | 14 | 16 | 18 | 19 | 19 |
Average annual rainfall in Katwijk aan Zee: 856.467mm (337.2 inches)
The bar chart below shows the average daily sunshine hours in Katwijk aan Zee
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 1.7 | 3 | 4 | 5.9 | 7.5 | 7.6 | 7.2 | 7 | 5 | 3.6 | 2.1 | 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 | 0.6 | 0.2 | 2 | 3.8 | 7.4 | 10.5 | 12.8 | 12.6 | 10.5 | 7.5 | 4.2 | 2.2 |
Max °C | 5.3 | 5.7 | 8.5 | 11.3 | 15.9 | 18.4 | 20.3 | 20.7 | 18 | 14.2 | 9.5 | 6.9 |
Min °F | 33 | 32.3 | 35.5 | 38.8 | 45.2 | 50.8 | 55 | 54.6 | 50.8 | 45.4 | 39.5 | 35.9 |
Max °F | 37.2 | 37.2 | 41.4 | 45.5 | 52.9 | 57.9 | 61.7 | 61.9 | 57.6 | 51.4 | 44.2 | 40.1 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 7.1 | 5.9 | 6.1 | 8.1 | 11 | 14 | 16.5 | 18.1 | 17.4 | 15.2 | 12.1 | 9.1 |
°F | 44.7 | 42.6 | 43 | 46.5 | 51.7 | 57.1 | 61.8 | 64.6 | 63.3 | 59.4 | 53.8 | 48.5 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 22 | 22 | 22 | 19 | 18 | 18 | 18 | 17 | 17 | 18 | 22 | 22 |
mph | 14 | 14 | 14 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 14 | 14 |
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 |
---|---|---|---|---|---|---|---|---|---|---|---|
88% | 85% | 84% | 80% | 79% | 80% | 80% | 80% | 82% | 85% | 86% | 88% |
Hottest month: | August | 20.5°C 68.9°F |
---|---|---|
Driest month: | February | 44mm 1.7ins |
Sunniest month: | May | 7.5hrs |
Coldest month: | January | 5.1°C 41.2°F |
Wettest month: | November | 91mm 3.6ins |
Warmest sea: | August | 18.1°C 64.6°F |