| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 6.6° | 2.3° | 70.8mm | 17.5 | 27 |
| February | 7° | 1.9° | 56.3mm | 14.7 | 29 |
| March | 9.7° | 2.9° | 45.9mm | 11.9 | 43 |
| April | 13.5° | 4.7° | 39mm | 10.5 | 58 |
| May | 16.7° | 8.2° | 50.9mm | 11 | 67 |
| June | 19.6° | 11.4° | 58.1mm | 10.4 | 78 |
| July | 21.5° | 13.6° | 68.8mm | 12.8 | 74 |
| August | 21.7° | 14° | 92.6mm | 12.3 | 75 |
| September | 19.3° | 11.7° | 88mm | 13.4 | 71 |
| October | 15.3° | 9.1° | 100mm | 15.4 | 55 |
| November | 10.8° | 5.7° | 90.4mm | 17.9 | 41 |
| December | 7.6° | 3.1° | 83.1mm | 18.1 | 30 |
January in Velsen-Zuid averages a daily high of 6.6°C with nights around 2.3°C. Expect roughly 17.5 wet days totalling 70.8mm. A hard month to visit for comfort alone.
February in Velsen-Zuid averages a daily high of 7°C with nights around 1.9°C. Expect roughly 14.7 wet days totalling 56.3mm. A hard month to visit for comfort alone.
March in Velsen-Zuid averages a daily high of 9.7°C with nights around 2.9°C. Expect roughly 11.9 wet days totalling 45.9mm. Demanding conditions — pack for it and plan indoor options.
April in Velsen-Zuid averages a daily high of 13.5°C with nights around 4.7°C. Expect roughly 10.5 wet days totalling 39mm. Generally workable, with some weather to plan around.
May in Velsen-Zuid averages a daily high of 16.7°C with nights around 8.2°C. Expect roughly 11 wet days totalling 50.9mm. Generally workable, with some weather to plan around.
June in Velsen-Zuid averages a daily high of 19.6°C with nights around 11.4°C. Expect roughly 10.4 wet days totalling 58.1mm. Comfortable conditions for being outdoors all day.
July in Velsen-Zuid averages a daily high of 21.5°C with nights around 13.6°C. Expect roughly 12.8 wet days totalling 68.8mm. Generally workable, with some weather to plan around.
August in Velsen-Zuid averages a daily high of 21.7°C with nights around 14°C. Expect roughly 12.3 wet days totalling 92.6mm. Comfortable conditions for being outdoors all day.
September in Velsen-Zuid averages a daily high of 19.3°C with nights around 11.7°C. Expect roughly 13.4 wet days totalling 88mm. Generally workable, with some weather to plan around.
October in Velsen-Zuid averages a daily high of 15.3°C with nights around 9.1°C. Expect roughly 15.4 wet days totalling 100mm. Generally workable, with some weather to plan around.
November in Velsen-Zuid averages a daily high of 10.8°C with nights around 5.7°C. Expect roughly 17.9 wet days totalling 90.4mm. Demanding conditions — pack for it and plan indoor options.
December in Velsen-Zuid averages a daily high of 7.6°C with nights around 3.1°C. Expect roughly 18.1 wet days totalling 83.1mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Velsen-Zuid peaks at 78.
Based on 30 years of records, June–September scores highest for comfort in Velsen-Zuid, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 21.7°C.
October is the wettest, averaging 100mm of rain across roughly 15.4 wet days.
January is the coolest month, with average daily highs around 6.6°C.